N. Okada, J.B. Joshua, S. Jeon, A. Kuze, I. Park, M. Ito, N. Hiroyoshi, Iron Oxide as Electron Mediator in Gold Cementation with Zero-Valent Aluminum in Gold-Copper Ammoniacal Thiosulfate Medium. In: Proceedings of International Symposium on Earth Science and Technology 2022, Fukuoka, Japan, 2022.
Y. Liu, N. Hiroyoshi, M. Ito, I. Park, Flotation of finely ground chalcopyrite in the presence of nanobubbles. In: Proceedings of International Symposium on Earth Science and Technology 2022, Fukuoka, Japan, 2022.
I. Park, T. Horii, M. Ito, N. Hiroyoshi, Carrier magnetic separation to recover finely ground rare earth minerals: The effect of gravity separation as a pre-concentration step. In: Proceedings of International Symposium on Earth Science and Technology 2022, Fukuoka, Japan, 2022.
I. Park, U. Dai, K. Aikawa, S. Jeon, M. Ito, N. Hiroyoshi, Application of microencapsulation technique for improving flotation separation of chalcopyrite and molybdenite. In: Proceedings of COPPER 2022, Santiago, Chile, 2022.
T.J. Mhandu, S. Hamatsu, S. Jeon, I. Park, M. Ito, N. Hiroyoshi, Refractory gold ores: A focus on advances in pretreatment techniques in thiosulfate leaching systems of As/Sb bearing gold ores. In: Proceedings of the 16th International Symposium on East Asian Resources Recycling Technology, Tainan, Taiwan, 2022.
Y. Ebisu, J. V. Satur, K. Mitsuhashi, K. Aikawa, T. Suto, I. Park, M. Ito, N. Hiroyoshi, Investigation of Flotation Behaviors of Fine Particles in a Complex Ore Consisting of Various Copper Minerals. In: Proceedings of International Mineral Processing Congress Asia-Pacific 2022, Melbourne, Australia, 2022.
K. Aikawa, M. Ito, A. Kusano, S. Jeon, I. Park, N. Hiroyoshi, Effects of anglesite on the flotation of sphalerite in complex sulphide ores and a method to suppress sphalerite floatability. In: Proceedings of International Mineral Processing Congress Asia-Pacific 2022, Melbourne, Australia, 2022.
2021
K. Aikawa, I. Park, N. Hiroyoshi, M. Ito, Challenges and approaches to flotation of seafloor massive sulphide ores. In: Proceedings of International Future Mining Conference 2021, online.
I. Park, S. Hong, U. Dai, S. Jeon, M. Ito, N. Hiroyoshi, Selective formation of hydrophilic iron phosphate coating on chalcopyrite to separate from sphalerite in flotation. In: Proceedings of Geo-environmental Engineering and Recycling (GER) 2021, online.
T. Suto, M. Ito, H. Shimada, S. Jeon, I. Park, N. Hiroyoshi, Agglomeration-flotation to minimize the loss of finely-ground copper sulfides to tailings causing environmental pollution at mine sites. In: Proceedings of Geo-environmental Engineering and Recycling (GER) 2021, online.
Y. Kanazawa, M. Ito, N. Sato, S. Jeon, I. Park, N. Hiroyoshi, Enhanced magnetic separation of finely-ground rare earth minerals by oil agglomeration. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2021.
T.J. Mhandu, N. Hiroyoshi, M. Ito, I. Park, S. Jeon, A REVIEW OF GOLD EXTRACTION FROM ARSENIC/ANTIMONY BEARING ORES. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2021.
N. Sawada, M. Ito, S. Kimura, I. Park, S. Jeon, N. Hiroyoshi, A new method to detect product boundary in jig separator using pressure sensor. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2021.
M. Bilal, M. Ito, K. Koike, V. Hornn, F.U. Hassan, S. Jeon, I. Park, N. Hiroyoshi, Study of autogenous carrier flotation technique for finely ground chalcopyrite particles – a review. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2021.
N. Orii, M. Ito, K. Aikawa, S. Jeon, I. Park, R. Magwaneng, T. Ono, T. Sakakibara, K. Sunada, N. Hiroyoshi, Effects of coexisting pyrite on suppression of sphalerite in the flotation of copper-zinc sulfides. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2021.
R. Matsuoka, M. Ito, S. Jeon, I. Park, N. Hiroyoshi, A study on the water injection method of Falcon-Knelson concentrator. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2021.
2020
M. Silwamba, M. Ito, I. Park, C.B. Tabelin, S. Jeon, N. Hiroyoshi, Simultaneous extraction and sequestration of lead and zinc from zinc leach residues using acidified brine solution and zero-valent aluminum. In: Proceedings of International Mineral Processing Congress (IMPC) 2020, Cape Town, South Africa, 2020.
S. Hong, I. Park, S. Jeon, M. Ito, N. Hiroyoshi, Microencapsulation of Chalcopyrite and Molybdenite using Fe2+ and PO43– for Selective Flotation. In: Proceedings of International Conference on Innovations for Sustainable and Responsible Mining (ISRM) 2020, online.
M. Bilal, M. Ito, K. Koike, I. Park, S. Jeon, N. Hiroyoshi, A study of autogenous carrier flotation technique for selective separation of fine chalcopyrite. In: Proceedings of International Conference on Innovations for Sustainable and Responsible Mining (ISRM) 2020, online.
2019
S. Jeon, S. Bright, I. Park, S. Hong, M. Ito, N. Hiroyoshi, The effects of co-existing metal ions on the recovery of gold from ammonium thiosulfate solutions using aluminum and activated carbon. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2019.
I. Park, S. Hong, M. Ito, N. Hiroyoshi, Selective coating for improving MoS2/CuFeS2 flotation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2019.
M. Silwamba, R. Hashizume, I. Park, S. Jeon, M. Chirwa, K. Banda, I. Nyambe, C.B. Tabelin, M. Ito, N. Hiroyoshi, Decontamination of zinc leach residues by recovering lead and zinc: An approach of concurrent dissolution and cementation using chloride solution and aluminum powder. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2019.
I. Park, An advanced passivation technique of sulfide minerals to prevent the formation of acid miner drainage. The 7th Joint Seminar on Geo-environment Engineering and Recycling (GER 2019), Bangkok, Thailand, 2019.
N. Sato, R. Matsuoka, I. Park, S. Jeon, M. Ito, N. Hiroyoshi, Effects of particle-particle interaction on the separation efficiency of the Knelson concentrator. The 7th Joint Seminar on Geo-environment Engineering and Recycling (GER 2019), Bangkok, Thailand, 2019.
M. Silwamba, R. Hashizume, T. Fukushima, I. Park, S. Jeon, C.B. Tabelin, M. Chirwa, I. Nyambe, M. Ito, N. Hiroyoshi, Lead and zinc removal from zinc leach residues by concurrent dissolution and cementation in chloride leaching pulp using Al powder. The 7th Joint Seminar on Geo-environment Engineering and Recycling (GER 2019), Bangkok, Thailand, 2019.
E. Opiso, L.M. Ramos, J.P. Aseniero, J.R. Delfinado, I. Park, A. Orbecido, C.B. Tabelin, Reprocessing of ferriferous nickel laterite siltation sediments into magnetic nanoparticles through coprecipitation. In: Proc. of the 4th International Future Mining Conference, Sydney, Australia, 2019.
I. Park, M. Ito, C.B. Tabelin, N. Hiroyoshi, An advanced passivation technique of sulphide minerals in mine wastes for preventing acid mine drainage formation. In: Proc. of the 4th International Future Mining Conference, Sydney, Australia, 2019.
S. Jeon, H. Takahashi, C.B. Tabelin, M. Ito, N. Hiroyoshi, Recovery of gold ions from ammonium thiosulfate using synergistic effect of aluminum and activated carbon. In: Proc. of the 4th International Future Mining Conference, Sydney, Australia, 2019.
T. Phengsaart, S. Kimura, A. Azuma, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, M. Ito, Development of discharge systems using restraining walls for continuous Jig separation of plastics to improve purity of bottom layer products. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
T. Phengsaart, A. Azuma, D. Kitayama, S. Kimura, S. Rittiboon, A. Wongthanuwat, D. Wiwattanadate, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, M. Ito, Effects of particle geometry on the bubble attachment during hydrid Jig separation. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
T. Phengsaart, D. Kitayama, A. Azuma, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, M. Ito, Effects of flatness ratio on the particle motion during Jig separation of plastic and improvement of Jig separation efficiency using modified water pulsation. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
T. Phengsaart, A. Azuma, D. Kitayama, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, M. Ito, Estimation of settling velocity and Jig separation efficiency of non-spherical plastics using flatness ratio. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
V. Hornn, M. Ito, H. Shimada, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, S. Kuroiwa, Y. Aoki, Agglomeration-flotation of finely ground chalcopyrite: Effects of agitation strength in agglomeration on flotation separation efficiency. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
V. Hornn, M. Ito, H. Shimada, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, S. Kuroiwa, Y. Aoki, Agglomeration flotation of finely ground chalcopyrite: Comparison of model calculation vs. experimental results. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
K. Aikawa, T. Segawa, S. Jeon, I. Park, C.B. Tabelin, N. Hiroyoshi, M. Ito, Effects of galvanic interactions between lead-activated sphalerite and pyrite on flotation. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
S. Choi, S. Jeon, I. Park, C.B. Tabelin, M. Ito, N. Hiroyoshi, Cementation of Cd and Pb ions from sulfate and chloride solutions using aluminum and activated carbon. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
M. Silwamba, M. Ito, T. Fukushima, I. Park, S. Jeon, C.B. Tabelin, N. Hiroyoshi, Lead removal in zinc leach residues from Kabwe, Zambia by carrier-in-pulp method using zero-valent iron. In: Proc. of the 15th International Symposium on East Asian Resources Recycling Technology, Pyeongchang, South Korea, 2019.
T. Phengsaart, A. Azuma, D. Kitayama, S. Kimura, C.B. Tabelin, N. Hiroyoshi, M. Ito, Estimation of Jig separation efficiency of plastics using a modified concentration criterion. In: Proc. of the 13th International Conference on Mining, Materials, and Petroleum Engineering, Krabi, Thailand, 2019.
I. Park, K. Higuchi, C.B. Tabelin, X. Li, M. Ito, N. Hiroyoshi, Suppression of arsenopyrite oxidation by carrier-microencapsulation using Fe-catecholate complex with phosphate ion. In: Proc. of the 1st International Conference on Advances in Civil and Ecological Engineering Research, Kaoshiung, Taiwan, 2019.
C.B. Tabelin, I. Park, X. Li, S. Seng, M. Villacorte-Tabelin, T. Igarashi, M. Ito, N. Hiroyoshi, Development of advanced pyrite passivation strategies towards sustainable management of acid mine drainage. In: Proc. of the 1st International Conference on Advances in Civil and Ecological Engineering Research, Kaoshiung, Taiwan, 2019.
2018
X. Li, H. Chie, N. Hiroyoshi, C.B. Tbelin, I. Park, M. Ito, Comparison of the thermodynamic and electrochemical properties of various cation-catecholate complexes for carrier-microencapsulation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, 2018.
I. Park, C.B. Tabelin, H. Inano, K. Seno, K. Higuchi, M. Ito, N. Hiroyoshi, Formation of surface protective coatings on arsenopyrite using Al-catecholate complex and its mode of inhibition of arsenopyrite oxidation. In: Proc. of the 25th Regional Symposium on Chemical Engineering, Makati Diamond Residences Manila, Philippines, 2018.
K. Seno, I. Park, C.B. Tabelin, K. Magaribuchi, M. Ito, N. Hiroyoshi, Carrier-microencapsulation using Al-catecholate complex to suppress arsenopyrite oxidation: Evaluation of the coating stability under simulated weathering conditions. In: Proc. of the 25th Regional Symposium on Chemical Engineering, Makati Diamond Residences Manila, Philippines, 2018.
J. Zoleta, G. Itao, V.J. Resabal, A. Lubguban, R. Corpuz, C.B. Tabelin, M. Ito, N. Hiroyoshi, CeO2-dolomite as fire retardant additives on the conventional intumescent coating in steel substrate for improved performance. In: Proc. of the 25th Regional Symposium on Chemical Engineering, Makati Diamond Residences Manila, Philippines, 2018.
C.B. Tabelin, A. Sasaki, T. Igarashi, S. Tomiyama, M. Villacorte-Tabelin, M. Ito, N. Hiroyoshi, Prediction of acid mine drainage and zinc migration in the tailings dam of a closed mine, and possible countermeasures. In: Proc. of the 25th Regional Symposium on Chemical Engineering, Makati Diamond Residences Manila, Philippines, 2018.
G. Purevdelger, M. Ito, N. Sato, C.B. Tabelin, N. Hiroyoshi, J. Sereenen, Magnetic separation of rare earth ore from from Khalzan Burgedei peralkaline rare earth deposit, Mongolia. In: Proc. of the 4th International Conference and Exhibition (Mineral Processing 2018), Ulaanbaatar, Mongolia, pp. 21–23, 2018.
G. Purevdelger, M. Ito, N. Sato, C.B. Tabelin, T. Otake, N. Hiroyoshi, J. Sereenen, Characterization of Khalzan Burgedei peralkaline rare earth deposit, Mongolia and a, Mongolia. In: Proc. of Proceedings of the 4th International Conference and Exhibition (Mineral Processing 2018), Ulaanbaatar, Mongolia, pp. 24–29, 2018.
S. Jeon, M. Ito, R. Pongsumrankul, S. Tanaka, N. Kitajima, C.B. Tabelin, N. Hiroyoshi, Effects of physical separation as a pretreatment for ammonium thiosulfate leaching of gold from waste mobile phones. In: Proc. of the 29th International Mineral Processing Congress, Moscow, Russia, (3. Physical enrichment-gravity, magnetic and electrostatic separation), pp. 50-58, 2018.
M. Silwamba, M. Ito, T. Fukushima, C.B. Tabelin, S. Takakuwa, N. Hiroyoshi, M. Chirwa, K.E. Banda, I. Nyambe, Decontamination of zinc leach plant residues: recovery of extracted lead in leach pulp by cementation on ZVI. In: Proc. of 2nd International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Lusaka, Zambia, 2018.
M. Silwamba, M. Ito, T. Fukushima, S. Takakuwa, K. Minatogawa, C.B. Tabelin, N. Hiroyoshi, M. Chirwa, K.E. Banda, I. Nyambe, Characterization of zinc leaching residue in Kabwe area, Zambia. In: Proc. of 2nd International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Lusaka, Zambia, 2018.
T. Phengsaart, M. Ito, S. Jeon, A. Azuma, D. Kitayama, S. Kimura, C.B. Tabelin, N. Hiroyoshi, Recent advances in jig separation technologies for resources recycling. The 6th Joint Seminar on Geo-environment Engineering and Recycling (GER 2018), Taiyuan, China, 2018.
X. Li, N. Hiroyoshi, K. Naruwa, C. Harada, C.B. Tabelin, M. Ito, Effects of iron-catecholate complexes on pyrite oxidation. The 6th Joint Seminar on Geo-environment Engineering and Recycling (GER 2018), Taiyuan, China, 2018.
T. Phengsaart, M. Ito, A. Azuma, S. Kimura, K. Hori, H. Tanno, C.B. Tabelin, N. Hiroyoshi, Improvement of bottom product purity in a continuous jig using a restraining wall. Mining in Asia International Symposium, Bandung, Indonesia, 2018.
T. Phengsaart, A. Azuma, M. Ito, D. Kitayama, S. Kimura, C.B. Tabelin, N. Hiroyoshi, The effects of particle geometrical properties on the settling velocity of plastic particles in jig separation. Mining in Asia International Symposium, Bandung, Indonesia, 2018.
C.B. Tabelin, R. Sasaki, T. Igarashi, I. Park, S. Tamoto, T. Arima, M. Ito, N. Hiroyoshi, 2018. The roles of soluble phases in the release of geogenic arsenic and selenium from tunnel-excavated rocks of marine origin, In: Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, Fukuoka, Japan, pp. 312–319, 2018.
X. Li, C. Harada, I. Park, N. Hiroyoshi, C.B. Tabelin, M. Ito, 2018. Comparison of electrochemical properties of various metal-catecholate complexes for carrier-microencapsulation, In: Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, Fukuoka, Japan, pp. 344–348, 2018.
I. Park, C.B. Tabelin, K. Seno, K. Magaribuchi, M. Ito, N. Hiroyoshi, 2018. Suppression of the release of arsenic from arsenopyrite by titanium- and aluminum-based carrier-microencapsulation, In: Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, Fukuoka, Japan, pp. 305–311, 2018.
S. Jeon, M. Ito, S. Tanaka, N. Kitajima, C.B. Tabelin, N. Hiroyoshi, 2018. The characterization of crushed printed circuit boards of waste mobile phone and recovery of gold components by hybrid-jig separation. In: Proc. of the 17th Global Joint Seminar on Geo-environmental Engineering, Fukuoka, Japan, pp. 192–197, 2018.
2017
M. Ito, P. Galtchandmani, N. Sato, C.B. Tabelin, T. Otake, N. Hiroyoshi, Characterization of rare earth ore from Khaldzan Burgedei Peralkaline Deposit and its beneficiation by magnetic separation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 98-100, 2017.
S. Seng, C.B. Tabelin, Y. Kontani, M. Kojima, M. Ito, N. Hiroyoshi, Attachment of iron oxyhydroxides on pyrite and its effects on pyrite oxidation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 600-604, 2017.
M. Ito, Y. Makino, G.C. Eliseu, C.B. Tabelin, N. Hiroyoshi, Synergistic effects of calcium ion and anionic flocculants on coal flotation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 623-626, 2017.
S. Seng, C.B. Tabelin, M. Kojima, Y. Kontani, M. Ito, N. Hiroyoshi, Suppression of pyrite oxidation using zero-valent iron powder. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 619-622, 2017.
X. Li, N. Hiroyoshi, K. Naruwa, M. Ito, C.B. Tabelin, Comparison of the suppressive effect of ferric- and ferrous-catechol complexes on pyrite oxidation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 605-607, 2017.
I. Park, C.B. Tabelin, K. Seno, K. Magaribuchi, M. Ito, N. Hiroyoshi, Effects of aluminum-catechol complexes on pyrite oxidation. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 611-614, 2017.
N. Hiroyoshi, S. Tsuji, T.T. Nguyen, M. Ito, C.B. Tabelin, Redox potential dependence of chalcopyrite leaching in ferric-chloride solution: Effects of temperature and solution composition. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 615-618, 2017
S. Jeon, H. Takahashi, C.B. Tabelin, M. Ito, N. Hiroyoshi, Development of gold recovery method from ammonium thiosulfate solution using aluminum and activated carbon. In: Proceedings of International Symposium on Earth Science and Technology, Fukuoka, Japan, pp. 608-610, 2017.
T. Phengsaart, M. Ito, C.B. Tabelin, G.C. Eliseo, Y. Makino, A. Azuma, N. Hiroyoshi, Gravity separation and its application in coal cleaning and resources recycling: A review. In: Proceedings of Coal Mining and Utilization for Sustainable Development International Conference, Chiang Mai, Thailand, pp. 301-308, 2017.
M. Ito, S. Takakuwa, K. Minatogawa, C.B. Tabelin, N. Hiroyoshi, Y. Tomida, Advanced separation techniques for coarse size fraction of cesium-contaminated soil: Effects of soil particle morphology of soil washing. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 26, 2017.
T. Phengsaart, M. Ito, A. Azuma, C.B. Tabelin, N. Hiroyoshi, Effects of particle size and shape during jig separation. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 27, 2017.
X. Li, K. Naruwa, C.B. Tabelin, M. Ito, N. Hiroyoshi, Effects of additional organic functional groups on the redox properties of metal-catecholate complexes. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 28, 2017.
M. Ito, T. Fukushima, S. Takakuwa, K. Minatogawa, C.B. Tabelin, N. Hiroyoshi, Characterization of zinc contaminated mine waste in Kabwe area, Zambia. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 29, 2017.
I. Park, K. Seno, K. Magaribuchi, C.B. Tabelin, M. Ito, N. Hiroyoshi, Suppressive effects of aluminum-catechol complexes on the release of arsenic from arsenopyrite. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 31, 2017.
S. Jeon, T. H. Takahashi, R. Pongsumrankul, S. Tanaka, C.B. Tabelin, M. Ito, N. Hiroyoshi, Recovery of gold ions from ammonium thiosulfate solution by aluminum and other conductive particles. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 32, 2017.
S. Seng, C.B. Tabelin, M. Kojima, Y. Kontani, M. Ito, N. Hiroyoshi, Heterocoagulation anf galvanic interaction in mineral processing: A review. In: Proceedings of 1st International Kabwe Mine Pollution Amelioration Initiative (KAMPAI) Symposium, Sapporo, Japan, p. 32, 2017.
C.B. Tabelin, X. Li, S. Seng, M. Kojima, T. Igarashi, M. Ito, N. Hiroyoshi, Enhanced passivation of pyrite in phosphate solution using ferric-catechol complex and zero-valent iron. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Special Session on Post Mining, pp. 8-13, 2017.
S. Seng, M. Motoya, Y. Kontani, C.B. Tabelin, M. Ito, N. Hiroyoshi, A review of heterocoagulation and galvanic interaction of sulfide minerals. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Special Session on EARTH, pp. 40-45, 2017.
V. Hornn, R. Yamazawa, C.B. Tabelin, N. Hiroyoshi, Y. Imaizumi, M. Ito, Kinetic modeling of agglomeration-flotation of finely ground chalcopyrite. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Special Session on EARTH, pp. 51-56, 2017.
T. Phengsaart, A. Azuma, C.B. Tabelin, N. Hiroyoshi, M. Ito, Effects of flatness ratio on the jig separation of crushed plastic particles. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (EARTH), pp. 10-14, 2017.
S. Jeon, H. Takahashi, R. Ponsumrankul, S. Tanaka, C.B. Tabelin, M. Ito, N. Hiroyoshi, Synergistic effects of aluminum and other conductive particles on the cementation of gold ions from ammonium thiosulfate solutions. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (EARTH), pp. 183-186, 2017.
A. Tokuda, M. Ito, T. Segawa, T. Horiguchi, C.B. Tabelin, N. Hiroyoshi, Effects of zinc ions and their precipitates on flotation of sulfide minerals under alkaline condition. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (MMIJ-Mineral Processing), pp. 2-4, 2017.
Y. Takeuchi, N. Hiroyoshi, R.D. Alorro, M. Ito, C.B. Tabelin, Effects of mechanochemical treatment on the stability of arsenic-loaded schwertmannite. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (MMIJ-Mineral Processing), pp. 16-21, 2017.
X. Li, K. Naruwa, C.B. Tabelin, M. Ito, N. Hiroyoshi, Redox properties of metal complexes with catechol and its derivatives. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (MMIJ-Environment), pp. 4-9, 2017.
I. Park, K. Seno, K. Magaribuchi, C.B. Tabelin, M. Ito, N. Hiroyoshi, Carrier-microencapsulation using Al-catechol complex for suppressing arsenic release from arsenopyrite. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (MMIJ-Environment), pp. 10-15, 2017.
S. Tanaka, S. Jeon, N. Kitajima, C.B. Tabelin, N. Hiroyoshi, M. Ito, Distribution of different metals in gravity separation of printed circuit boards from mobile phones using jig separator and Knelson concentrator. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (MMIJ-Recycling), pp. 23-28, 2017.
T.T. Nguyen, S. Tsuji, C.B. Tabelin, M. Ito, N. Hiroyoshi, Electrochemical studies of chalcopyrite dissolution in acidic chloride solutions. In: Proceedings of the 14th International Symposium on East Asian Resources Recycling Technology and the Mining and Materials Processing Institute of Japan Fall Meeting, Sapporo, Japan, Poster (MMIJ-Hydrometallurgy), pp. 3-6, 2017.
M. Ito, A. Tokuda, T. Segawa, T Horiguchi, C.B. Tabelin, N. Hiroyoshi, Effects of metal ions on flotation of sulfide minerals. In: Proceedings of International Symposium on Earth Resources and Management, Moratuwa, Sri Lanka, 2017.
K. Eang, T. Igarashi, M. Kondo, C.B. Tabelin, R. Fujinaga, 2017. Geochemical evolution and groundwater mixing in an open-pit limestone quarry. In: Proceedings of the 16th Japan-Korea-France-Canada Joint Seminar on Geo-environmental Engineering, Seoul, Korea, pp. 319-324, 2017.
T. Phengsaart, M. Ito, N. Kitajima, A. Azuma, C.B. Tabelin, N. Hiroyoshi, The effects of geometrical properties of particles on recycling treatment by physical separation techniques: A review. In: Proceedings of the 10th AUN/SEED-net Regional Conference on Geo-Resource and Geological Engineering, Phnom Penh, Cambodia, pp. 446-459, 2017.
2016
C.B. Tabelin, S. Veerawattananum, M. Ito, N. Hiroyoshi, T. Igarashi, The interplay between pyrite and hematite and its implications in acid mine drainage control. In: Proceedings of the 15th Japan-Korea-France-Canada Joint Seminar on Geo-environmental Engineering, Nantes, France, pp. 141-150, 2016.
S. Veerawattananun, D. Wiwattanadate, C.B. Tabelin, M. Ito, N. Hiroyoshi, T. Igarashi, Fundamental electrochemical studies of carrier micro-encapsulation on pyrite: The stability of metal-organic complexes. In: Proceedings of the 15th Japan-Korea-France-Canada Joint Seminar on Geo-environmental Engineering, Nantes, France, pp. 141-150, 2016.
V. Hornn, M. Ito, M. Kameya, T. Segawa, R. Yamazawa, C.B. Tabelin, N. Hiroyoshi, A review of approaches to enhance sulfide-fines recovery by flotation. In: Proceedings of the 9th International Conference on Earth Resources Technology, Bangkok, Thailand, pp. 461-473, 2016.
S. Jeon, M. Ito, Y. Nagata, N. Kitajima, S. Tanaka, R. Pongsumrankul, T. Yamamoto, C.B. Tabelin, N. Hiroyoshi, Recovery methods for valuable metals from used printed circuit boards: A review. In: Proceedings of the 9th International Conference on Earth Resources Technology, Bangkok, Thailand, pp. 564-579, 2016.
I. Park, K. Magaribuchi, S. Veerawattananum, C.B. Tabelin, M. Ito, N. Hiroyoshi, T. Igarashi, Suppression of arsenopyrite oxidation by carrier microencapsulation using Ti-catechol complex. In: Proceedings of the 9th International Conference on Earth Resources Technology, Bangkok, Thailand, pp. 918-928, 2016.
S. Veerawattananun, D. Wiwattanadate, C.B. Tabelin, M. Ito, N. Hiroyoshi, T. Igarashi, Electrochemical insights on pyrite dissolution in the presence of alumina. In: Proceedings of the 9th International Conference on Earth Resources Technology, Bangkok, Thailand, pp. 906-917, 2016.
2015
C.B. Tabelin, M, Ito, N. Hiroyoshi, T. Igarashi, Acid Mine Drainage: Sources, environmental impacts and mitigation approaches, In: Proc. of the 2nd International Symposium Integrated Research and Education Center for Energy Conversion, Storage, Saving, and Transport Technologies, Fukuoka, Japan, pp. 13-14, 2015.
M. Ito, N. Murase, A. Saito, C.B. Tabelin, N. Hiroyoshi, Bubble attachment on plastic particles during hybrid Jig Separation: Measurements during water pulsation, In: Proc. of the 13th International Symposium on East Asian Resources Recycling Technology, Pattaya, Thailand, pp. 80-87, 2015.
M. Ito, N. Kitajima, A. Saito, S. Khanchang, C.B. Tabelin, N. Hiroyoshi, Recovery of valuable components from crushed mobile phones using Jig Separation, In: Proc. of the 13th International Symposium on East Asian Resources Recycling Technology, Pattaya, Thailand, pp. 80-87, 2015.
N. Hiroyoshi, Y. Nagata, M. Ito, C.B. Tabelin, Novel method to recover gold from Printed Circuit Boards using ammonium thiosulfate media, In: Proc. of the 13th International Symposium on East Asian Resources Recycling Technology, Pattaya, Thailand, pp. 80-87, 2015.
M. Ito, G.C. Eliseu, C.B. Tabelin, N. Hiroyoshi, Effects of water recirculation on the flotation of Kushiro and Mozambique coals, In: Proc. of the 13th International Symposium on East Asian Resources Recycling Technology, Pattaya, Thailand, pp. 80-87, 2015.
X. Li, S. Veerawattananun, C.B. Tabelin, N. Hiroyoshi, M. Ito, The effects of ferric-catechol on pyrite oxidation, In: Proc. of the 13th International Symposium on East Asian Resources Recycling Technology, Pattaya, Thailand, pp. 80-87, 2015.
C.B. Tabelin, N. Hiroyoshi, M. Ito, T. Igarashi, The effects of colloidal α-Fe2O3 on pyrite oxidative dissolution and their implications in the formation of acid mine drainage, In: Proc. of the 8th International Conference on Geological and Geo-resources Engineering and 7th Mineral Symposium, Penang, Malaysia, p. 17, 2015.
C.B. Tabelin, A. Hashimoto, T. Igarashi, M. Ito, N. Hiroyoshi, Sequestration of boron, arsenic and selenium leached from tunnel-excavated rocks through adsorption, In: Proc. of the 14th Global Joint Seminar on Geo-environmental Engineering, Montreal, Canada, p. 5, 2015.
2014
N. Hiroyoshi, Y. Nagata, M. Ito, C.B. Tabelin, Gold leaching from waste printed circuit boards by ammonium thiosulfate leaching, In: Proc. of the 8th International Conference on Earth Resources Technology, Vung Tau, Vietnam, pp. 19-23, 2014.
C.B. Tabelin, R. Sasaki, T. Igarashi, S. Tamoto, M. Ito, N. Hiroyoshi, 2014. The leaching and speciation behaviors of arsenic and selenium in tunnel-excavated rocks under flow-through conditions, In: Proc. of the 3rd International Conference on Advances in Mining and Tunneling, Vung Tau, Vietnam, pp. 573-581, 2014
C.B. Tabelin, T. Igarashi, M. Ito, N. Hiroyoshi, Tunnel-excavated rock: An invisible threat to the environment, In: Proc. of the 8th Asian Rock Mechanics Symposium, Sapporo, Japan, pp. 2554-2560, 2014.
C.B. Tabelin, N. Hiroyoshi, M. Ito, T. Igarashi, Enhanced encapsulation of pyrite using colloidal “micro-seeds”: Visualization and attachment experiments, In: Proc. of the 7th AUN/SEED-Net Geological Engineering Conference and the 2nd AUN/SEED-Net Natural Disaster Conference, Yangon, Myanmar, p. 20, 2014.
C.B. Tabelin, R. Sasaki, T. Igarashi, S. Tamoto, M. Ito, N. Hiroyoshi, The leaching and speciation behaviors of arsenic and selenium in tunnel-excavated rocks under flow-through conditions, In: Proc. of the 3rd International Conference on Advances in Mining and Tunneling, Vung Tau, Vietnam, pp. 573-581, 2014.
K.K. Mar, D. Karnawati, D.P.E. Putra, Sarto, T. Igarashi, C.B. Tabelin, Evaluating arsenic adsorption performance of lignite under saturated flow condition for permeable reactive barrier (PRB) design, In: Proc. of the 7th AUN/SEED-Net Geological Engineering Conference and the 2nd AUN/SEED-Net Natural Disaster Conference, Yangon, Myanmar, p. 20, 2014.
S. Houngaloune, N. Hiroyoshi, M. Ito, M. Fujimura, Immobilization of arsenic by schwertmannite synthesized from copper heap leach solutions, In: Proc. of the 6th international seminar on process hydrometallurgy (Hydroprocess2014) in CD-ROM: paper under Chapter 3, 2014.
C.B. Tabelin, T. Igarashi, M. Ito, N. Hiroyoshi, Leachability of arsenic from tunnel-excavated rock under free- and controlled-flow conditions, In: Proc. of the 13th Global Joint Seminar on Geo-Environmental Engineering, Sapporo, Japan, pp. 31-37, 2014.
2013
M. Ito, K. Sukegawa, N. Hiroyoshi, Preparation and evaluation of Fe/Al composite for metal recovery, In: Proc. of 3rd Joint Seminar on Geo-environmental engineering & recycling, p.48, 2013.
N. Hiroyoshi, R. Sato, P. Homchuen, M. Ito, Recovery of the platinum group metals from the chloride solution by synthesized magnetite and slag Magnetite, In: Proc. of 3rd Joint seminar on Geo-environmental engineering & recycling, p.19, 2013.
M. Ito, M. Takamatsu, K. Ono, N. Hiroyoshi, Mineral processing of rare-earth ore from Kipawa, Canada, Proc. of 3rd Joint seminar on Geo-environmental Engineering & Recycling, p.70, 2013.
M. Ito, T. Ikemoto, N. Hiroyoshi, Coagulation flotation of anode slime in copper electro-refining, In: Proc. of 3rd Joint seminar on Geo-environmental Engineering & Recycling, p.54, 2013.
S. Houngaloune, N Hiroyoshi, M Ito, M. Fujimura, Stabilization of arsenic in the mining and metallurgical industries: A review, In: Proc. of 23rd World mining congress in CD-ROM (paper No. 777), 2013.
M. Ito, M. Takamatsu, K. Asakura, C. Nishikawa, N. Hiroyoshi, M. Tsunekawa, Selective comminution and magnetic separation of rare-earth ore from Dong Pao, Vietnam, In: Proc. of 23rd World mining congress in CD-ROM (paper No. 775), 2013.
M. Ito , N. Hiroyoshi, M. Tsunekawa, Advanced jig separation technology for resource recycling and mineral processing， In: Proc. of the 5th Regional Conference on Geological Engineering, pp. 13-18, 2013.
M. Ito, M Takamatsu, K Asakura, N Hiroyoshi, Selective comminution of rare-earth ore from Dong Pao, Vietnam, In: Proc. of Kick-off Seminar on ASEAN-Japan Build-up Cooperative Education Program for Global Human Resource Development in Earth Resources Engineering, CD-ROM, 2013.
M. Ito, K. Sukegawa, N. Hiroyoshi, Preparation of Fe/Al composite for metal recovery, In: Proc. of 12th Int. Symp. East Asian Recycling Technology, pp. 293-296, 2013.
M. Ito, T. Ikemoto, N. Hiroyoshi, Flotation of anode slime in copper electro-refining, In: Proc. of the 12th Int. Symp. East Asian Recycling Technology, pp. 954-957, 2013
N. Hiroyoshi, R. Sato, P. Homchuen, H. Kijitani, M. Ito, A study on the utilization of slag magnetite for the recovery of platinum group metals from chloride solutions, In: Proc of the 12th Int. Symp. East Asian Recycling Technology, pp. 374-377, 2013.
N. Hiroyoshi, H. Prin, Y. Takaya, M. Ito, Application of reductive melting process of CRT glass for recovering valuable metals from PCB waste, In: Proc. of the 11th International Conference on Mining, Materials and Petroleum Engineering and the 7th International Conference on Earth Resources Technology (ASEAN 2013++), pp. 8-10 (Resources Recycling), 2013.
M. Ito, A. Saito, N. Murase ,N. Hamaya, M. Takeuchi, N. Hiroyoshi, Separation of polyethylene and cross-linked polyethylene using a reverse hybrid jig, In: Proc. of the 11th International Conference on Mining, Materials and Petroleum Engineering and the 7th International Conference on Earth Resources Technology (ASEAN 2013++), pp. 5-7 (Resources Recycling), 2013.
M. Ito, S. Khanchang, A. Saito, N. Murase, N. Hamaya, N. Hiroyoshi, Recycling treatment of cell phones including PCBs by advanced jigging, In: Proc. of the 11th International Conference on Mining, Materials and Petroleum Engineering and the 7th International Conference on Earth Resources Technology (ASEAN 2013++), pp. 1-4 (Resources Recycling), 2013.
C.B. Tabelin, B. Ty, K.K. Mar, D.P.E. Putra, T. Igarashi, T. Yoneda, Arsenic adsorption onto lignite under saturated flow conditions: Experiment and reactive transport modeling, In: Proc. of the 11th International Conference on Mining, Materials and Petroleum Engineering and the 7th International Conference on Earth Resources Technology (ASEAN 2013++), Chiang Mai, Thailand, pp. 18-25 (Environmental Concerns I), 2013.
C.B. Tabelin, A. Hashimoto, T. Igarashi, T. Yoneda, The importance of pH in the leaching of boron, arsenic and selenium in sedimentary rocks, In: Proceedings of the 12th Global Joint Seminar on Geo-Environmental Engineering, Seoul, South Korea, pp. 29-39, 2013.
K.K. Mar, D. Karnawati, Sarto, D.P.E. Putra, T. Igarashi, C.B. Tabelin, Arsenic adsorption performance of lignite in saturated column experiments, In: Proceedings of the 5th AUN/SEED-Net Regional Conference on Geological Engineering, Kuala Lumpur, Malaysia, pp.106-114, 2013.
T. Igarashi, R. Sasaki, C.B. Tabelin, Chemical forms of arsenic and selenium leached from mudstones, Procedia Earth and Planetary Science, Vol. 6, pp. 105-113, 2013.
KK. Mar, D. Karnawati, Sarto, D.P.E. Putra, T. Igarashi, C.B. Tabelin, Comparison of arsenic adsorption on lignite, bentonite, shale and iron sand from Indonesia, Procedia Earth and Planetary Science, Vol. 6, pp. 242-250, 2013.
2012
M.Ito, S. Futakuchi, K. Asakura, N. Hiroyoshi, Mineral processing of deep-sea ores, In: Proc. of the 4th Regional Conference on Geological Engineering, CD-ROM, 2012.
P. Homchuen, M. Ito, N. Hiroyoshi, A study on the utilization of magnetite for the recovery of platinum group metals from chloride solution, In: Proc. the 4th Regional Conference on Geological Engineering, CD-ROM, 2012.
M. Ito, M. Takeuchi, N. Hiroyoshi, Plastic-plastic separation using advanced jig separation technology, In: Proc. of the 6th International Workshop and Conference on Earth Resources Technology, CD-ROM, 2012
C.B. Tabelin, T. Igarashi, T. Yoneda, Leaching of arsenic from hydrothermally altered rock in laboratory saturated-column experiments, In: Proc. of the 3rd International Symposium on Health Hazards of Arsenic Contamination of Groundwater and its countermeasures, Miyazaki, Japan, pp. 118-123, 2012.
C.B. Tabelin, T. Arima, T. Igarashi, T. Yoneda, Leaching of arsenic, boron, selenium and heavy metals from tunnel excavated rocks and their mitigation, In: Proc. of the 2nd International Conference on Advances in Mining and Tunneling, Hanoi, Vietnam, pp. 382-390, 2012.
C.B. Tabelin, T. Igarashi, T. Yoneda, Immobilization of arsenic released from excavated rock affected by hydrothermal alteration, In: Proc. of the 4th Regional Conference on Geological Engineering, Vientiane, Lao PDR, pp. 192-202, 2012.
T. Igarashi, C.B. Tabelin, T. Arima, Adsorption layer system for the reasonable disposal of hydrothermally altered rock, In: Proc. of the 10th International Conference on Mining, Materials and Petroleum Engineering and the 6th International Conference on Earth Resources Technology, Songkhla, Thailand, CD-ROM, 2012.
K.K. Mar, D. Karnawati, D.P.E. Putra, Sarto, T. Igarashi, C.B. Tabelin, Comparison of arsenic adsorption on lignite, bentonite, shale, and iron sand from Indonesia, In: Proceedings of the International Symposium on Earth Science and Technology, Bandung, Indonesia, pp. 251-256, 2012.
K.K. Mar, D. Karnawati, D.P.E. Putra, Sarto, T. Igarashi, C.B. Tabelin, Adsorption of arsenic onto lignite, bentonite, shale, and iron sand from Indonesia, In: Proceedings of the 5th AUN/SEED-net Regional Conference on Geo-Disaster Mitigation in ASEAN, Manila, Philippines, pp. 203-211, 2012.
2011
M. Ito, C. Nishikawa, N. Hiroyoshi, M. Tsunekawa, Mineral processing of rare-earth ore from Dongpao, Vietnam, In: Proc. of the 5th International Workshop and Conference on Earth Resources Technology, pp. 40-42, 2011.
N. Hiroyoshi, H. Kijitani, R.D. Alorro, M. Ito, M. Tsunekawa, Gold recovery from chloride solution using copper converter slag, In: Proc. of 11th Int. Symp. East Asian Recycling Technology, pp. 442-445, 2011.
P. Homchuen, N. Hiroyoshi, R.D. Alorro, H. Kijitani, M. Ito, A study on the utilization of magnetite for the recovery of platinum from chloride solution, In: Proc. of 11th Int. Symp. East Asian Recycling Technology, pp. 247-250, 2011
C.B. Tabelin, T. Igarashi, Mobilization and speciation of arsenic from hydrothermally altered rock with alkaline pH, In: Proc. of the 10th Japan-Korea-France-Canada Joint Seminar on Geo-environmental Engineering, Takamatsu, Japan, pp. 75-82, 2011.
T. Igarashi, C.B. Tabelin, Speciation of arsenic from hydrothermally altered slate, In: Proceedings of the 5th International Workshop and Conference on Earth Resources Technology, Ipoh, Malaysia, pp. 82-87, 2011.
2010
M. Ito, T. Takahashi, S. Futakuchi, N. Hiroyoshi, M. Tsunekawa, Mineral processing of deep-sea hydrothermal deposit ores, In: Proc. of the 4th International Workshop and Conference on Earth Resources Technology, CD-ROM, 2010.
R.D. Alorro, N. Hiroyoshi, M. Ito, M. Tsunekawa, Recovery of precious metals from chloride solution by magnetite, In: Proc. of the 25rd International Mineral Processing Congress, pp. 263-271, 2010.
R.K.T. Jha, J. Satur, N. Hiroyoshi, M. Ito, M. Tsunekawa, Carrier Micro Encapsulation (CME) for suppressing pyrite floatability and oxidation in coal preparation, In: Proc. of the 25rd International Mineral Processing Congress, pp. 2025-2033, 2010.
M. Ito, M. Akatsuka, E. Ishida, K. Hori, N. Hiroyoshi, M. Tsunekawa, Advanced Jig Separation of Shredded Plastics, In: Proc. of the 25rd International Mineral Processing Congress, pp. 843-850, 2010.
N. Hiroyoshi, Y. Takehara, M. Tsunekawa, T. Kuwazawa, Redox potential in column leaching of chalcopyrite, In: Proc. of Copper-2010, pp. 2753-2763, 2010
C.B. Tabelin, T. Igarashi, Leaching behavior of arsenic from hydrothermally altered rock in laboratory column experiments, In: Proc. of the 11th International Association for Engineering Geology and the Environment (IAEG) Congress. Auckland, New Zealand, pp. 4499-4506, 2010.
C.B. Tabelin, T. Igarashi, S. Ioka, The importance of sulfides, carbonates and organic matter in the leaching of arsenic from hydrothermally altered rock, In: Proc. of the International Symposium on a Robust Society against Natural Hazards and Environmental Disasters and the 3rd AUN/SEED – Net Regional Conference on Geo-Disaster Mitigation. Kyoto, Japan, pp. 106-117, 2010.
C.B. Tabelin, T. Igarashi, Arsenic mobility from hydrothermally altered rock in laboratory column experiments without atmospheric oxygen and carbon dioxide, In: Proc. of the International Symposium and 2nd Regional Conference on Geo-Disaster and Mitigation in ASEAN, Bali, Indonesia, pp. 361-368, 2010.
2009
M. Ito, T. Hamano, N. Hiroyoshi, M. Tsunekawa, Application of electric disintegration method for gold containing complex waste rocks of the Lepanto Mine, In: Proc. of 10th Int. Symp. East Asian Recycling Technology, pp. 270-273, 2009.
M. Ito, T. Takahashi, K. Sekimura, N. Hiroyoshi, M. Tsunekawa, Review of treatment of ocean-floor resources: Recovery methods for rare metals, In: Proc. of the 10th Int. Symp. East Asian Recycling Technology, pp. 302-305, 2009.
R.D. Alorro, N. Hiroyoshi, S. Mitani, M. Ito, M. Tsunekawa, Application of the CIP technique to recover heavy metals from MSW molten fly ash, In: Proc. of the 10th Int. Symp. East Asian Recycling Technology, pp. 316-320, 2009.
Y. Kuwayama, M. Ito, M. Akatsuka, N. Hiroyoshi, M. Tsunekawa, Characterization of ASR for recovering low chloride fuel and metals by physical separation, In: Proc. of 10th Int. Symp. East Asian Recycling Technology, pp. 636-639, 2009.
M. Ito, M. Akatsuka, Y. Kuwayama, N. Hiroyoshi, M. Tsunekawa, Wet treatment of ASR to Obtain Solid Fuel - Removal of Unburnable Fine Particles Entrapped in the Agglomerates and Their Characterization”, Proceedings of 10th Int. Symp. East Asian Recycling Technology, pp. 640-643, 2009.
R. K. Jha, J. Satur, N. Hiroyoshi, M. Ito, M. Tsunekawa, Application of carrier microencapsulation using Si-catechol complex for pyrite removal from coal”, In: Proc. of 10th Int. Symp. East Asian Recycling Technology, pp. 793-796, 2009.
M. Ito, K. Kashiwaya, N. Sumiya, H. Furuya, N. Hiroyoshi, M. Tsunekawa, Physical separation of crushed nickel-metal hydride battery components for recycling, In: Proc. of EcoDesign-2009, Paper OS-3A-7, 2009.
M. Ito, M. Akatsuka, Y. Kuwayama, K. Hori, E. Ishida, N. Hiroyoshi, M. Tsunekawa, Physical separation of shredder residue of plastics used in home appliances: Gravity separation using advanced jig separation technology, In: Proc. of EcoDesign-2009, Paper OS-3A-8, 2009.
M. Tsunekawa, J. Mimura, T. Sakai, Y. Nakamura, Y. Sasaki, M. Ito, N. Hiroyosh, Removal of lead from PVC in electric wires and cables, In: Proc. of EcoDesign-2009, Paper OS-3A-9, 2009.
M. Ito, T. Takahashi, K. Sekimura, K. Hori, N. Hiroyoshi, M. Tsunekawa, Advanced jig separation of cobalt-rich ferromanganese Ore, In: Proc. of 3rd International Workshop and Conference on Earth Resources Technology, pp. 212-217, 2009.
M. Ito, T. Hamano, N. Hiroyoshi, M. Tsunekawa, Electrical disintegration of gold containing complex waste rocks of the Lepanto Mine, In: Proc. of 3rd International Workshop and Conference on Earth Resources Technology, pp. 204-211, 2009.
R.K. Jha, J. Satur, N. Hiroyoshi, M. Ito, M. Tsunekawa, Carrier Micro Encapsulation (CME) for Coal Preparation, In: Proc. of the 3rd International Workshop and Conference on Earth Resources Technology, 197-203, 2009.
R.D. Alorro, N. Hiroyoshi, M. Ito, M. Tsunekawa, Carrier-in-Pulp method: A hydrometallurgical approach to recover metals from primary and secondary sources, In: Proc. of the 3rd International Workshop and Conference on Earth Resources Technology, pp. 187-196, 2009.
R.D. Alorro, N. Hiroyoshi, M. Ito, M. Tsunekawa, Recovery of gold from chloride solution by magnetite, In: Proc. of the 5th International Conference on Gold Science, Technology and its Applications (Gold-2009), University of Heidelberg, Heidelberg, Germany, CD-ROM, 2009.
C.B. Tabelin, T. Igarashi, S. Tamoto, Factors affecting arsenic mobility from hydrothermally altered rock in an impoundment-type in situ experiment, In: Proc. of the Sustainability through Resource Conservation and Recycling 2009, Cape Town, South Africa, CD-ROM, 2009.
C.B. Tabelin, T. Igarashi, Effects of air oxidation on the mobility of arsenic and lead from hydrothermally altered rock, In: Proc. of the 1st Regional Conference on Geo-Disaster Mitigation and Waste Management in ASEAN, Kuala Lumpur, Malaysia, pp. 124-129, 2009.
T. Igarashi, C.B. Tabelin, T. Aoki, Issues of Geohazard and Geoenvironment related to tunnel construction in Hokkaido, In: Proc. of the 1st Regional Conference on Geo-Disaster Mitigation and Waste Management in ASEAN. Kuala Lumpur, Malaysia, CD-ROM, 2009.
C.B. Tabelin, T. Igarashi, Mobility of arsenic from hydrothermally altered rock in laboratory column experiments: Effects of water infiltration rate and compaction, In: Yoneda, T. and Sato, T. (Editors), Proc. of the 3rd International Workshop and Conference on Earth Resources and Technology, Sapporo, Japan, pp. 66-74, 2009.
2008
M. Ito, K. Kashiwaya, E. Yamaguchi, K. Sekimura, T. Takahashi, N. Hiroyoshi, M. Tsunekawa, Selective crushing of cobalt-rich ferromanganese ores and flotation of the fine size product, In: Proc. of The 2nd International Workshop and Conference on Earth Resources Technology, pp. 42-45, 2008.
M. Ito, M. Tsunekawa, K. Sekimura, E. Yamaguchi, K. Kashiwaya, K. Hori, N. Hiroyoshi, Mineral processing of cobalt-rich ferromanganese crust and nodules，In: Proc. of the 24rd International Mineral Processing Congress, pp. 806-812, 2008.
R.D. Alorro, N. Hiroyoshi, S. Mitani, M. Ito, and M. Tsunekawa, Rejection and recovery of heavy metals from MSW melting fly ash by carrier-in-pulp method， In: Proc. of the 24rd International Mineral Processing Congress, pp. 3610-3617, 2008.
K. Hori, M. Tsunekawa, N. Hiroyoshi, M. Ito, Optimization of jig separation with fluidization of particle layer, In: Proc. of the 24rd International Mineral Processing Congress, pp. 841-845, 2008.
M. Ito, M. Tsunekawa, K. Kashiwaya, N. Sumiya, H. Furuya, N. Hiroyoshi, Physical separation of crushed product of waste nickel-metal hydride batteries from hybrid vehicles, In: Proc. of REWAS-2008, pp. 3-8, 2008
C.B. Tabelin, T. Igarashi, K. Asakura, Effects of pH on the mobilization of arsenic from hydrothermally altered rocks, In: Lambert, Martin, Daniell, TM (Editor); Leonard, Michael (Editor). Proceedings of Water Down Under 2008. Modbury, SA: Engineers Australia; Causal Productions, pp. 2789-2797, 2008.
T. Igarashi, C.B. Tabelin, K. Asakura, Leaching behavior of arsenic and lead from pyritic rock by considering pH change, In: Proc. of the 2nd International Workshop and Conference on Earth Resources Technology, Bangkok, Thailand, pp. 53-57, 2008.
2007
J. Satur, N. Hiroyoshi, M. Tsunekawa, M. Ito and H. Okamoto: “Carrier-microencapsulation for Preventing Pyrite Oxidation, Proceedings of The 22nd International Conference on Solid Waste Technology and Management: 270-278(2007)
R. D. Alorro, S. Mitani, N. Hiroyoshi, M. Ito, and M. Tsunekawa: “Carrier-in-Pulp Method as a New Hydrometallurgical Route to Reject and Recover Heavy Metals from MSW Melting Fly Ash”, Proceedings of Bio- & Hydrometallurgy 07:CD-ROM(2007)
N. Hiroyoshi, M.. Tsunekawa, H. Okamoto, R. Nakayama and S. Kuroiwa: "Redox Potential Measur-ement and Control in Chalcopyrite Heap Leaching", Proceedings of the 6th International Copper-Cob-re Conference: Vol. 4, 285-296(2007)
K. Yoo, J-C, Lee, N. Hiroyoshi, R. Diaz Alorro and M.. Tsunekawa: "The Effect of the Redox Po- tential on the Leaching of Chalcopyrite in Chloride Media", Proceedings of the 6th International Copper-Cob-re Conference: Vol. 4, 259-2268(2007)
J. Satur, N. Hiroyoshi, M. Ito and M. Tsunekawa: "Carrier-Microencapsulation for Suppressing Flota- bility and Oxidation of Pyrite in Copper Mineral Processing", Proceedings of the 6th InternationalCopper-Cob-re Conference: Vol. 2, 3-12(2007)
M. Ito, K. Kashiwaya, E. Yamaguchi, K. Sekimura, K. Hori, N. Hiroyoshi and M. Tsunekawa: "Mineral Processing of Cobalt-Rich Manganese Crust and Nodules - Establishment of treatment flow for removal of substrate rock from deep sea mined ore -", Proceedings of 37th Underwater Mining Institute, 1-14(2007)
M. Ito, Y. Kuwayama, M. Akatsuka, K. Hori, N.Hiroyoshi and M. Tsunekawa: "Development of Wet Recycling Process for Automobile Shredded Residue - Evaluation of Entanglement Properties of Automobile Shredded Residue Crushed Product-", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 187-190 (2007)
M. Ito, M. Akatsuka, Y. Kuwayama, K. Hori, N.Hiroyoshi and M. Tsunekawa: "Development of Wet Recycling Process for Automobile Shredded Residue - Effect of Surfactants on the Wettability of Autmobile Shredded Residue -", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 237-240 (2007)
K. Hori, M. Tsunekawa:, N.Hiroyoshi and M. Ito: "Development of a New Gravity Concentration Machinery - a Hybrid Jig -", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 439-442 (2007)
M. Ito, K. Kashiwaya, N. Sumiya, H. Furuya, N.Hiroyoshi and M. Tsunekawa:"Physical Separation of Anode and Cathod Activating Agents from Waste Nickel Metal Hydride Batteries", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 439-442 (2007)
M. Tsunekawa, Y. Sasaki, Y. Nakamura, M. Ito, N. Hiroyoshi and K. K. Yoo: "Dispersion-Floccuration Behavior of Fine Pb Powder in Organic Solvent", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 503-506 (2007)
M. Ito, N. Hokari, M. Takada, N.Hiroyoshi and M. Tsunekawa:"The New Washing Method of Lead Contaminated Soil", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 576-579 (2007)
K. Kashiwaya, T. Noumachi, M. Ito, N.Hiroyoshi and M. Tsunekawa: "Classification of Fine Hydrophobic Particles Using Hydrocyclone", Proceedings of 9th Int. Symp. East Asian Recycling Technology: 661-664 (2007)
R .K .T. Jha, J. Satur, N. Hiroyoshi, M. Ito and M. Tsunekawa: "Carrier-Microencapsulation using Si-Catechol Complex for Suppressing Pyrite Floatability", Proceedings of MEI's Intern. Flotation '07 Conf. Gala Dinner, CD-JHA: 1-14(2007)
2006
M. Tsunekawa, H. Furuya, N. Hiroyoshi, M. Ito, O. Kitamura, R. Ichimura and K. Kikuta: “ The Recovery of Electrode Materials from Waste Nickel Metal Hydride Batteries in Hybrid Vehicle", Proceedings of 3rd Japan-Korea Int. Symp. on Resources Recycling and Materials Science:69-73 (2006)
S. Owada, D. Okajima, Y. Nakamura and M. Ito: ”Reduction of the amount of wasted "red mad" by syrface grinding for bauxite and by magnetic separation for the "red mud" itself”, Proceedings of 3rd Japan-Korea International Symposium of Resources Recycling and Materials Science: 34-39(2006)
M. Ito, S. Owada, S. H. CHO, T. Nishimura, T. Nakagawa, Y. Nakamiya, M. Yokota and K. Kaneko: “The Effects of Mineralogical Properties of Samples on Liberation Phenomena in Electrical Disintegration”, Proceedings of 23rd International Mineral Processing Congress: 247-252(2006)
S.Owada, T.Ohmiya, T.Morikawa and M.Ito: “Comparison of Several Liberation Models Considering Preferential Breakage at Phase Boundaries”, Proceedings of 23rd International Mineral Processing Congress: 1800-1805(2006)
S.H. Cho, B. Mohanty, M. Ito, Y. Nakamiya, S. Owada, S. Kubota, Y. Ogata, A. Shibayama, M. Yokota and K. Kaneko: “Dynamic fragmentation of rock by high-voltage pulses”, Proceedings of 41st U.S. Symposium on Rock Mechanics,(2006)
J. Satur, K. Sueyoshi, N. Hiroyoshi, M. Tsunekawa and H. Okamoto: “Carrier-Microencapsulation for Preventing Pyrite Oxidation”, Proceedings of The 16th Iketani Conference-Electrochemistry nad Thermodynamics on Materials Processing for Sustainable Production: 131-151(2006)
2005
Y. Tomioka., N. Hiroyoshi, M. Tsunekawa: “Oxidation States of Arsenic Ions Caused by Weathering of Arsenopyrite in the Presence of Acidithiobacillus ferrooxidans”, Proceedings of the 16th Internation-al Biohydrometallurgy Symposium, 65-73 (2005)
M. Tsunekawa, Y. Honma, K. Yoo, N. Hiroyoshi and M. Ito: “Upgrading of Crystalline Limestone by Carrier Flotation”, Proceedings of 8th Int. Symp. East Asian Recycling Technology: 221-224 (2005)
M. Tsunekawa, H. Furuya, N. Hiroyoshi, M. Ito, O. Kitamura, R. Ichimura and K. Kikuta: “ The Recovery of Useful Materials from Scrapped Secondary Batteries by Physical Separation Techniques”, Proceedings of 8th Int. Symp. East Asian Recycling Technology: 382-385 (2005)
K. Yoo, N. Hiroyoshi and M. Tsunekawa: “The Removal of Manganese Ions Using a Sulfate-redu- cing Bacteria Bioreactor”, Proceedings of EMC 2005, Vol.4, 1751-1765(2005)
Y. Tomioka., N. Hiroyoshi, M. Tsunekawa: “Oxidation States of Arsenic Ions Caused by Weathering of Arsenopyrite in the Presence of Acidithiobacillus ferrooxidans”, Proceedings of the 16th Internation-al Biohydrometallurgy Symposium, 65-73 (2005)
S. Owada, D. Okajima, Y. Nakamura, and M. Ito: “Two Approaches for Reducing Wasted "Red Mud"--Possibility of Upgrading Bauxite and the "Red Mud"--“, Proceedings of 7th International Alumina Quality Workshop: 205-209(2005)
2004
M. Tsunekawa, K. Hori, T. Hirajima, N. Hiroyoshi and M. Ito: "Application of Jig Separator to Recycle Plastics Used in Electrical Appliances", Proceedings of REWAS'04, Vol.2, 1651-1660(2004)
T. Hirajima and M. Tsunekawa: "On-Line Monitoring for Classification of PET Flakes", Proceedings of REWAS'04, Vol.3, 2875-2877(2004)
2003
K. Asakura, H. Oide, M. Mizuno, M. Tsunekawa and H. Hirajima: "Application of Numerical Techniques to analysis of Jigging of Plastic Particles", Proceedings of ASME FEDSM'03, FEDSM2003-45503(2003)
M. Tsunekawa, K. Hori, T. Hirajima and N. Hiroyoshi: "Jig Separation of Plastics",Proceedings of The Japan/Korea Inter. Symp. on Resources Recycling and Materials Sciences, 95-100(2003)
K. Yoo, K. Sasaki, N. Hiroyoshi and M. Tsunekawa: "The Biological Synthesis of Metastable γ-MnSby Sulfate Reducing Bacteria", Proceedings of The Japan/Korea Inter. Symp. on Resources Recycling and Materials Sciences, 131-1136(2003)
N. Hiroyoshi, M. Tsunekawa and T. Hirajima: "Redox Potential Dependence of Chalcopyrite Leaching", Proceedings of 22nd International Mineral Processing Congress, 1203-1213(2003)
M. Tsunekawa, S. Ogawa, B. Naoi, T. Hirajima, N. Hiroyoshi, M. Miyamoto and M. Ito:"Development of Separator for Plastics in a Recycling Plant for Processing Scrapped Office Machines", Proceedings of 7th Int. Symp. East Asian Recycling Technology, 155-158(2003)
H. Okamoto, R. Nakayama, M. Tsunekawa and N. Hiroyoshi: "Improvement of Chalcopyrite Leaching in Acidic Sulfate Solutions by Redox Potential Cotrol", Proceedings of Copper 2003-Cobre 2003, Vol. 6, 67-81(2003)
H. Miki, N. Hiroyoshi, S. Kuroiwa, M. Tsunekawa and T. Hirajima: "Mechanisms of Catalytic Lea-ching of Chalcopyrite", Proceedings of Copper 2003-Cobre 2003, Vol. 6, 383-394(2003)
