Associate Professor Nobutaka Shirasaki

Affiliation

Affiliation Division of Environmental Engineering, Faculty of Engineering, Hokkaido University I'm Shirasaki.
Water Metabolism Systems Field
N13W8, Sapporo 060-8628, Japan
Telephone+81-11-706-7282
FAX+81-11-706-7282
LocationFaculty of Engineering, N Building, 105 (2)
e-mail nobutaka@eng.hokudai.ac.jp

Career summary

2003.3Graduated from Department of Environmental Urban Engineering, Fukui National College of Technology, Japan.
2003.4Transfer admission to Department of Civil Engineering, School of Engineering, Gifu University, Japan.
2005.3Graduated from above.
2005.4Entered master's program of Department of Civil Engineering, School of Engineering, Gifu University, Japan.
2007.3Completed above program.
2007.4Entered doctoral program of Built Environment, Graduate School of Engineering, Hokkaido University, Japan.
2009.4Research Fellow, Japan Society for the Promotion of Science (DC2).
2010.3Completed doctoral program of Built Environment, Graduate School of Engineering, Hokkaido University, Japan.
2010.4Research Fellow, Japan Society for the Promotion of Science (PD).
2011.1-Assistant Professor, Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Japan.

Degree

  1. Doctor (Engineering), Hokkaido University, 2010.

Awards

  1. Second NF Foundation R&D Encouragement Award, 2013.
  2. Best Presenter Award at 68th Annual Meeting of Japan Society of Civil Engineers, 2013.
  3. 49th Environmental Engineering Research Forum Dissertation Prize, 2013.
  4. Maeda Engineering Foundation 20th Anniversary Commemorative Special Paper First Prize, 2013.
  5. Minister of Education, Culture, Sports, Science and Technology Young Scientists' Prize, 2012.
  6. Kazutaka Yamada Prize, 2012.
  7. Japan Society of Civil Engineers Paper Encouragement Prize, 2011.
  8. 46th Environmental Engineering Environmental Engineering Research Forum Encouragement Prize, 2009.
  9. Japan Society on Water Environment Young Research Introduction (Organo) Session Best Presentation Prize, 2009.
  10. Japan Society on Water Environment Doctoral Research Encouragement Prize (Organo Prize), 2009.
  11. 45th Environmental Engineering Research Forum Excellent Poster Presentation Prize, 2008.
  12. 2004 Academic Year Japan Society of Civil Engineers Central Branch Prize for Excellent Presentation of Research, 2005.
  13. Gifu University Faculty of Engineering, Social Infrastructure Engineering Department, Academic Year 2004 Best Graduation Research Prize, 2005.
  14. Gifu University Faculty of Engineering representative, 2005.

Research scope

  1. Evaluating removal of non-culturable water-borne pathogenic viruses during drinking water treatment using virus-like particles and immuno-PCR.
  2. Development of a novel, rapid, and simple quantitative method for water-borne pathogenic viruses using fluorescent light.
  3. Development of new and effective aluminum-based coagulant for virus removal.
  4. Elucidation of virus inactivation mechanism in drining water treatment process using MALDI-TOF-MS.

Publications

  1. Nakazawa, Y., Abe, T., Matsui, Y., Shinno, K., Kobayashi, S., Shirasaki, N. and Matsushita, T., Differences in removal rates of virgin/decayed microplastics, viruses, activated carbon, and kaolin/montmorillonite clay particles by coagulation, flocculation, sedimentation, and rapid sand filtration during water treatment, Water Research, 203, 117550, 2021.
  2. Matsushita, T., Kikkawa, Y., Omori, K., Matsui, Y. and Shirasaki, N., A metabolism-coupled cell-independent acetylcholinesterase activity assay for evaluation of the effects of chlorination on diazinon toxicity, Chemical Research in Toxicology, 34, 2070-2078, 2021.
  3. Shi, G., Nishizawa, S., Matsushita, T., Kato, Y., Kozumi, T., Matsui, Y. and Shirasaki, N., Computational fluid dynamics-based modeling and optimization of flow rate and radiant exitance for 1,4-dioxane degradation in a vacuum ultraviolet photoreactor, Water Research, 197, 117086, 2021.
  4. Nakazawa, Y., Abe, T., Matsui, Y., Shirasaki, N. and Matsushita, T., Stray particles as the source of residuals in sand filtrate: Behavior of superfine powdered activated carbon particles in water treatment processes, Water Research, accepted.
  5. Saito, S., Matsui, Y., Yamamoto, Y., Matsushita, S., Mima, S., Shirasaki, N. and Matsushita, T., Oxidative removal of soluble divalent manganese ion by chlorine in the presence of superfine powdered activated carbon, Water Research, accepted.
  6. Shirasaki, N., Matsushita, T., Matsui, Y. and Koriki, S., Suitability of pepper mild mottle virus as a human enteric virus surrogate for assessing the efficacy of thermal or free-chlorine disinfection processes by using infectivity assays and enhanced viability PCR, Water Research, accepted.
  7. Narita, K., Matsui, Y., Matsushita, T. and Shirasaki, N., Selection of priority pesticides in japanese drinking water quality regulation: validity, limitations, and evolution of a risk prediction method, Science of The Total Environment, accepted.
  8. Matsushita, T., Fujita, Y., Omori, K., Huang, Y., Matsui, Y. and Shirasaki, N., Effect of chlorination on anti-acetylcholinesterase activity of organophosphorus insecticide solutions and contributions of the parent insecticides and their oxons to the activity, Chemosphere, accepted.
  9. Chen, Y., Nakazawa, Y., Matsui, Y., Shirasaki, N. and Matsushita, T., Sulfate ion in raw water affects performance of high-basicity PACl coagulants produced by Al(OH)3 dissolution and base-titration: removal of SPAC particles by coagulation-flocculation, sedimentation, and sand filtration, Water Research, accepted.
  10. Nishizawa, S., Matsushita, T., Matsui, Y. and Shirasaki, N., Formation of disinfection by-products from coexisting organic matter during vacuum ultraviolet (VUV) or ultraviolet (UV) treatment following pre-chlorination and their fates after post-chlorination, Science of the Total Environment, 737, 140300, 2020.
  11. Nakayama, A., Sakamoto, A., Matsushita, T., Matsui, Y. and Shirasaki, N., Effects of pre, post, and simultaneous loading of natural organic matter on 2-methylisoborneol adsorption on superfine powdered activated carbon: reversibility and external pore-blocking, Water Research, accepted.
  12. Zhao, Y., Kitajima, R., Shirasaki, N., Matsui, Y. and Matsushita, T., Precoating membranes with submicron super-fine powdered activated carbon after coagulation prevents transmembrane pressure rise: Straining and high adsorption capacity effects, Water Research, 177, 115757, 2020.
  13. Matsushita, T., Sugita, W., Ishikawa, T., Shi, G., Nishizawa, S., Matsui, Y. and Shirasaki, N., Prediction of 1,4-dioxane decomposition during VUV treatment by model simulation taking into account effects of coexisting inorganic ions, Water Research, 164, 114918, 2019.
  14. Nishikawa, S., Matsui, Y., Matsushita, T. and Shirasaki, N., Assessment of indirect inhalation exposure to formaldehyde evaporated from water, Regulatory Toxicology and Pharmacology, 106, 43-49, 2019.
  15. Takaesu, H., Matsui, Y., Nishimura, Y., Matsushita, T. and Shirasaki, N., Micro-milling super-fine powdered activated carbon decreases adsorption capacity by introducing oxygen/hydrogen-containing functional groups on carbon surface from water, Water Research, 155, 66-75, 2019.
  16. Nakazawa, Y., Matsui, Y., Hanamura, Y., Shinno, K., Shirasaki, N. and Matsushita, T., Minimizing residual black particles in sand filtrate when applying super-fine powdered activated carbon: coagulants and coagulation conditions, Water Research, 147, 311-320, 2018.
  17. Nakazawa, Y., Matsui, Y., Hanamura, Y., Shinno, K., Shirasaki, N. and Matsushita, T., Identifying, counting, and characterizing superfine activated-carbon particles remaining after coagulation, sedimentation, and sand filtration, Water Research, 138, 160-168, 2018.
  18. Akiyama, M., Matsui, Y., Kido, J., Matsushita, T. and Shirasaki, N., Monte-Carlo and multi-exposure assessment for the derivation of criteria for disinfection byproducts and volatile organic compounds in drinking water: allocation factors and liter-equivalents per day, Regulatory Toxicology and Pharmacology, 95, 161-174, 2018.
  19. Matsushita, T., Morimoto, A., Kuriyama, T., Matsumoto, E., Matsui, Y., Shirasaki, N., Kondo, T., Takanashi, H. and Kameya, T., Removals of pesticides and pesticide transformation products during drinking water treatment processes and their impact on mutagen formation potential after chlorination, Water Research, 138, 67-76, 2018.
  20. Shirasaki, N., Matsushita, T., Matsui, Y. and Yamashita, R., Evaluation of the suitability of a plant virus, pepper mild mottle virus, as a surrogate of human enteric viruses for assessment of the efficacy of coagulation-rapid sand filtration to remove those viruses, Water Research, 129, 460-469, 2018.
  21. Matsushita, T., Honda, S., Kuriyama, T., Fujita, Y., Kondo, T., Matsui, Y., Shirasaki, N., Takanashi, H. and Kameya, T., Identification of mutagenic transformation products generated during oxidation of 3-methyl-4-nitrophenol solutions by orbitrap tandem mass spectrometry and quantitative structure-activity relationship analyses, Water Research, 129, 347-356, 2018.
  22. Matsushita, T., Sakuma, M., Tazawa, S., Hatase, T., Shirasaki, N. and Matsui, Y., Use of gas chromatography-mass spectrometry-olfactometry and a conventional flask test to identify off-flavor compounds generated from phenylalanine during chlorination of drinking water, Water Research, 125, 332-340, 2017.
  23. Pan, L., Nishimura, Y., Takaesu, H., Matsui, Y., Matsushita, T. and Shirasaki, N., Effects of decreasing activated carbon particle diameter from 30 m to 140 nm on equilibrium adsorption capacity, Water Research, 124, 425-434, 2017.
  24. Matsui, Y., Shirasaki, N., Yamaguchi, T., Kondo, K., Machida, K., Fukuura, T. and Matsushita, T., Characteristics and components of poly-aluminum chloride coagulants that enhance arsenate removal by coagulation: detailed analysis of aluminum species, Water Research, 118, 177-186, 2017.
  25. Matsushita, T., Matsui, Y., Ikekame, S., Sakuma M. and Shirasaki, N., Trichloramine removal with activated carbon is governed by two reductive reactions: a theoretical approach with diffusion-reaction models, Environmental Science & Technology, 51, 4541-4548, 2017.
  26. Shirasaki, N., Matsushita, T., Matsui, Y. and Murai, K., Assessment of the efficacy of membrane filtration processes to remove human enteric viruses and the suitability of bacteriophages and a plant virus as surrogates for those viruses, Water Research, 115, 29-39, 2017.
  27. Pan, L., Takagi, Y., Matsui, Y., Matsushita, T. and Shirasaki, N., Micro-milling of spent granular activated carbon for its possible reuse as an adsorbent: remaining capacity and characteristics, Water Research, 114, 50-58, 2017.
  28. Shirasaki, N., Matsushita, T., Matsui, Y., Murai, K. and Aochi, A., Elimination of representative contaminant candidate list viruses, coxsackievirus, echovirus, hepatitis A virus, and norovirus, from water by coagulation processes, Journal of Hazardous Materials, 326, 110-119, 2017.
  29. Pan, L., Matsui, Y., Matsushita, T. and Shirasaki, N., Superiority of wet-milled over dry-milled superfine powdered activated carbon for adsorptive 2-methylisoborneol removal, Water Research, 102, 516-523, 2016.
  30. Shirasaki, N., Matsushita, T., Matsui, Y., Marubayashi, T. and Murai, K., Investigation of enteric adenovirus and poliovirus removal by coagulation processes and suitability of bacteriophages MS2 and φX174 as surrogates for those viruses, Science of the Total Environment, 563-564, 29-39, 2016.
  31. Matsushita, T., Hashizuka, M., Kuriyama, T., Matsui, Y. and Shirasaki, N., Use of orbitrap–MS/MS and QSAR analyses to estimate mutagenic transformation products of iopamidol generated during ozonation and chlorination, Chemosphere, 148, 233-240, 2016.
  32. Shirasaki, N., Matsushita, T., Matsui, Y. and Marubayashi, T., Effect of coagulant basicity on virus removal from water by polyferric chloride, Journal of Water Supply: Research and Technology–AQUA, 65(4), 322-329, 2016.
  33. Shirasaki, N., Matsushita, T., Matsui, Y. and Marubayashi, T., Effect of aluminum hydrolyte species on human enterovirus removal from water during the coagulation process, Chemical Engineering Journal, 284, 786-793, 2016.
  34. Shirasaki, N., Matsushita, T., Matsui, Y. and Ohno, K., Characterization of recombinant norovirus virus-like particles and evaluation of their applicability to the investigation of norovirus removal performance in membrane filtration processes, Water Science and Technology: Water Supply, 16(3), 737-745, 2016.
  35. Matsui, Y., Nakao, S., Sakamoto, A., Taniguchi, T., Pan, L., Matsushita, T., and Shirasaki, N., Adsorption capacities of activated carbons for geosmin and 2-methylisoborneol vary with activated carbon particle size: effects of adsorbent and adsorbate characteristics, Water Research, 85, 95-102, 2015.
  36. Matsushita, T., Kobayashi, N., Hashizuka, M., Sakuma, H., Kondo, T., Matsui, Y. and Shirasaki, N., Changes in mutagenicity and acute toxicity of solutions of iodinated X-ray contrast media during chlorination, Chemosphere, 135, 101-107, 2015.
  37. Matsushita, T., Nakamura, K., Matsui, Y. and Shirasaki, N., Effect of growth phase of cyanobacterium on release of intracellular geosmin from cells during microfiltration process. Membrane Water Treatment, 6, 225-235, 2015.
  38. Kimura, M., Matsui, Y., Saito, S., Takahashi, T., Nakagawa, M., Shirasaki, N. and Matsushita, T., Hydraulically irreversible membrane fouling during coagulation-microfiltration and its control by using high-basicity polyaluminum chloride, Journal of Membrane Science, 477, 115-122, 2015.
  39. Matsushita, T., Hirai, S., Ishikawa, T., Matsui, Y. and Shirasaki, N., Decomposition of 1,4-dioxane by vacuum ultraviolet irradiation: Study of economic feasibility and by-product formation, Process Safety and Environmental Protection, 94, 528-541, 2015.
  40. Sakuma, M., Matsushita, T., Matsui, Y., Aki, T., Isaka, M. and Shirasaki, N., Mechanisms of trichloramine removal with activated carbon: Stoichiometric analysis with isotopically labelled trichloramine and theoretical analysis with a diffusion-reaction model, Water Research, 68, 839-848, 2015.
  41. Ikari, M., Matsui, Y., Suzuki, Y., Matsushita, T. and Shirasaki, N., Removal of iodide from water by chlorination and subsequent adsorption on powdered activated carbon, Water Research, 68, 227-237, 2015.
  42. Matsui, Y., Sakamoto, A., Nakao, S., Taniguchi, T., Matsushita, T., Shirasaki, N., Sakamoto, N. and Yurimoto, H., Isotope microscopy visualization of the adsorption profile of 2-methylisoborneol and geosmin in powdered activated carbon, Environmental Science & Technologyy, 48, 10897-10903, 2014.
  43. Shirasaki, N., Matsushita, T., Matsui, Y., Urasaki, T., Kimura, M. and Ohno, K., Virus removal by an in-line coagulation-ceramic microfiltration process with high-basicity polyaluminum coagulation pretreatment, Water Science and Technology: Water Supply, 14(3), 429-437, 2014.
  44. Narita, K., Matsui, Y., Iwao, K., Kamata, M., Matsushita, T. and Shirasaki, N., Selecting pesticides for inclusion in drinking water quality guidelines on the basis of detection probability and ranking, Environment International, 63, 114-120, 2014.
  45. Shirasaki, N., Matsushita, T., Matsui, Y., Oshiba, A., Marubayashi, T. and Sato, S., Improved virus removal by high-basicity polyaluminum coagulants compared to commercially available aluminum-based coagulants, Water Research, 48, 375-386, 2014.
  46. Matsui, Y., Ishikawa, T. B., Kimura, M., Machida, K., Shirasaki, N. and Matsushita, T., Aluminum concentrations of sand filter and polymeric membrane filtrates: a comparative study, Separation and Purification Technology, 119, 58-65, 2013.
  47. Niizuma, S., Matsui, Y., Ohno, K., Itoh, S., Matsushita, T. and Shirasaki, N., Relative source allocation of TDI to drinking water for derivation of a criterion for chloroform: a Monte-Carlo and multi-exposure assessment, Regulatory Toxicology and Pharmacology, 67, 98-107, 2013.
  48. Matsushita, T., Shirasaki, N., Tatsuki, Y. and Matsui, Y. Investigating norovirus removal by microfiltration, ultrafiltration, and precoagulation-microfiltration processes using recombinant norovirus virus-like particles and real-time immuno-PCR, Water Research, 47, 5819-5827, 2013.
  49. Kimura, M., Matsui, Y., Kondo, K., Ishikawa, T.B., Matsushita, T. and Shirasaki, N., Minimizing residual aluminum concentration in treated water by tailoring properties of polyaluminum coagulants, Water Research, 47(6), 2075-2084, 2013.
  50. Matsushita, T., Suzuki, H., Shirasaki, N., Matsui, Y. and Ohno, K., Adsorptive virus removal with super-powdered activated carbon, Separation and Purification Technology, 107, 79-84, 2013.
  51. Shirasaki, N., Matsushita, T., Matsui, Y., Urasaki, T. and Ohno, K., Difference in behaviors of F-specific DNA and RNA bacteriophages during coagulation-rapid sand filtration and coagulation-microfiltration processes, Water Science and Technology: Water Supply, 12(5), 666-673, 2012.
  52. Matsushita, T., Shirasaki, N., Matsui, Y. and Ohno, K., Virus inactivation during coagulation with aluminum coagulants, Chemosphere, 85(4), 571-576, 2011.
  53. Shirasaki, N., Matsushita, T.,Matsui, Y., Kobuke, M. and Ohno, K., Feasibility of in-line coagulation as a pretreatment for ceramic microfiltration to remove viruses, Journal of Water Supply: Research and Technology–AQUA, accepted.
  54. Shirasaki, N., Matsushita, T., Matsui, Y., Urasaki, T., Oshiba, A. and Ohno, K., Evaluation of norovirus removal performance in a coagulation-ceramic microfiltration process by using recombinant norovirus virus-like particles, Water Science and Technology, 61 (8), 2027-2034, 2010.
  55. Shirasaki, N., Matsushita, T., Matsui, Y., Oshiba, A. and Ohno, K., Estimation of norovirus removal performance in a coagulation-rapid sand filtration process by using recombinant norovirus VLPs, Water Research, 44 (5), 1307-1316, 2010.
  56. Shirasaki, N., Matsushita, T., Matsui, Y., Urasaki, T. and Ohno, K., Comparison of behaviors of two surrogates for pathogenic waterborne viruses, bacteriophages Qβ and MS2, during the aluminum coagulation process, Water Research, 43(3), 605-612, 2009.
  57. Shirasaki, N., Matsushita, T., Matsui, Y., Kobuke, M. and Ohno, K., Comparison of removal performance of two surrogates for pathogenic waterborne viruses, bacteriophage Qβ and MS2, in a coagulation–ceramic microfiltration system, Journal of Membrane Science, 326, 564-571, 2009.
  58. Shirasaki, N., Matsushita, T., Matsui, Y. and Ohno, K., Effects of reversible and irreversible membrane fouling on virus removal by a coagulation-microfiltration system, Journal of Water Supply: Research and Technology–AQUA, 57 (7), 501-506, 2008.
  59. Shirasaki, N., Matsushita, T., Matsui, Y., Ohno, K. and Kobuke, M., Virus removal in a hybrid coagulation-microfiltration system—Investigating mechanisms of virus removal by a combination of PCR and PFU methods, Water Science and Technology: Water Supply, 7 (5-6), 2007.
  60. Matsushita, T., Matsui, Y. and Shirasaki, N., Analyzing mass balance of viruses in a coagulation-ceramic microfiltration hybrid system by a combination of the polymerase chain reaction (PCR) method and the plaque forming units (PFU) method, Water Science and Technology, 53 (7), 199-207, 2006. download
  61. Matsushita, T., Matsui, Y., Shirasaki, N. and Kato, Y., Effect of membrane pore size, coagulation time, and coagulant dose on virus removal by a coagulation-ceramic microfiltration hybrid system, Desalination, 178 (1-3), 21-26, 2005. download

International conferences

  1. Matsui, Y., Nakao, S., Taniguchi, T., Sakamoto, A., Shirasaki, N. and Matsushita, T., Enhanced removal of 2-MIB and geosmin by super-fine PAC: Evidence of shell adsorption, The Tenth IWA Symposium on Off-Flavours in the Aquatic Environment, Tainan, Taiwan, 27 October–1 November, 2013.
  2. Matsushita, T., Shirasaki, N., Matsui, Y., Tatsuki, Y. and Oshiba, A., Evaluating norovirus removal during drinking water treatment by using recombinant norovirus virus-like particles, 2nd International Doctoral Symposium with Partner Universites, Sapporo, Japan, 24–26 October 2013. Special lecture
  3. Ikari, M., Niizuma, S., Matsui, Y., Matsushita, T. and Shirasaki, N., Removal of radioactive iodine in drinking water by the combination of chlorine oxidation and activated carbon adsorption, The 5th IWA-ASPIRE Conference, Daejeon, Korea, 8–12 September 2013.
  4. Shirasaki, N., Matsushita, T., Matsui, Y. and Tatsuki, Y., Estimating norovirus removal performance in an in-line coagulation-ceramic microfiltration process by using recombinant norovirus VLPs and immuno-PCR method, IWA Membrane Technology Conference (IWA-MTC 2013), Toronto, Canada, 25–29 August 2013.
  5. Shirasaki, N., Matsushita, T. and Matsui, Y., Virus removal by a coagulation-microfiltration process, The 4th IWA Asia-Pacific Young Water Professionals Conference 2012, Tokyo, Japan, 7–10 December 2012.
  6. Shirasaki, N., Matsushita, T., Matsui, Y. and Sato, S., Effective removal of virus by high-basicity polyaluminum coagulation treatment, Proceedings of Particle Separation Conference, Berlin, Germany, 18–20 June 2012.
  7. Kimura, M., Matsui, Y., Takahashi, T., Oshiba, A., Machida, K., Shirasaki, N. and Matsushita, T., Precoagulation by basicity-optimized polyaluminum chloride effectively reduces membrane fouling, Proceedings of Particle Separation Conference, Berlin, Germany, 18–20 June 2012.
  8. Kimura, M., Matsui, Y., Oshiba, A., Ishikawa, T. B., Machida, K., kondo, K., Shirasaki, N. and Matsushita, T., Basicity-optimized polyaluminum chloride to minimize dissolved residual aluminum concentration, Proceedings of Particle Separation Conference, Berlin, Germany, 18–20 June 2012.
  9. Shirasaki, N., Matsushita, T., Tatsuki, Y. and Matsui, Y., A new approach to estimate norovirus removal performance in a membrane filtration process by using virus-like particles and immuno-PCR method, Proceedings of AWWA/AMTA 2012 Membrane Technology Conference & Exposition, Glendale, AZ, USA, 27 February–1 March 2012.
  10. Kimura, M., Matsui, Y., Matsushita, T., Shirasaki, N. and Ishikawa, T. B., Coagulation by novel high-basicity poly-aluminum chloride effectively reduces ceramic membrane fouling and residual aluminum, Proceedings of AWWA/AMTA 2012 Membrane Technology Conference & Exposition, Glendale, AZ, USA, 27 February–1 March 2012.
  11. Kimura, M., Matsui, Y., Matsushita, T., Shirasaki, N. and Ishikawa, T. B., Reducing ceramic membrane fouling and residual aluminum by precoagulation with high-basicity polyaluminum chloride, Proceedings of the 4th IWA-ASPIRE Conference, Tokyo, Japan, 2–6 October 2011.
  12. Suzuki, H., Shirasaki, N., Matsushita, T. and Matsui, Y., Virus removal by adsorption on super-powdered activated carbon, Proceedings of the 4th IWA-ASPIRE Conference, Tokyo, Japan, 2–6 October 2011.
  13. Matsui, Y., Taniguchi, T., Nakao, S., Matsushita, T. and Shirasaki, N., Comparison of 2-methylisoborneol adsorption capacities on super-powdered and powdered activated carbon, Proceedings of 9th IWA Symposium on Off-Flavours in the Aquatic Environment, Aberdeen, UK, 14–18 August 2011.
  14. Matsushita, T., Shirasaki, N., Ohshiba, A., Matsui, Y. and Ohno, K., Evaluating norovirus removal during drinking water treatment by using recombinant NV-VLPs, Proceedings of IWA World Water Congress, Montreal, Canada, 19–24 September 2010.
  15. Urasaki, T., Matsushita, T., Shirasaki, N., Oshiba, A., Matsui, Y. and Ohno, K., Removal of norovirus VLPs in drinking water treatment process, Proceedings of The 3rd IWA-ASPIRE Conference, Taipei, Taiwan, 18–22 October 2009.
  16. Matsushita, T., Shirasaki, N., Oshiba, A., Urasaki, T., Matsui, Y. and Ohno, K., Removal of norovirus by a coagulation-ceramic MF hybrid system, Proceedings of Euromembrane 2009 Conference, Montpellier, France, 6–10 September 2009.
  17. Matsushita, T., Shirasaki, N., Kobuke, M., Matsui, Y. and Ohno, K., Effective removal of virus by ceramic microfiltration with in-line coagulation pretreatment, Proceedings of Euromembrane 2009 Conference, Montpellier, France, 6–10 September 2009.
  18. Shirasaki, N., Matsushita, T., Matsui, Y., Urasaki, T., Oshiba, A. and Ohno, K., Evaluation of norovirus removal performance in a coagulation–ceramic microfiltration process by using recombinant norovirus VLPs, Proceedings of 5th IWA Specialised Membnrae Technology Converence for Water and Wastewater Treatment, Beijing, China, 1–3 September 2009.
  19. Shirasaki, N., Matsushita, T., Matsui, Y., Oshiba, A., Urasaki, T. and Ohno, K., Application of recombinant norovirus VLPs to evaluate norovirus removal performance in a coagulation–sedimentation–rapid sand filtration process, Proceedings of Nanoparticle and Particle Separation 2009, Durham, USA, 3–5 June 2009.
  20. Matsushita, T., Shirasaki, N., Urasaki, T., Oshiba, A., Matsui, Y. and Ohno, K., Removal of norovirus during conventional drinking water treatment process –application of recombinant NV-VLPs to laboratory-scale experiments, Proceedings of 15th International Symposium of the Health-Related Water Microbiology Group, Naxos, Greece, 31 May–5 June 2009.
  21. Shirasaki, N., Matsushita, T., Matsui, Y., Kobuke, M., Urasaki, T. and Ohno, K., Coagulation–ceramic microfiltration hybrid system effectively removes virus that is difficult to remove in conventional coagulation–sedimentation–sand filtration process, Proceedings of ICOM2008, Honolulu, Hawaii USA, 12–18 July 2008
  22. Shirasaki, N., Kobuke, M., Urasaki, T., Matsushita, T., Matsui, Y., and Ohno, K., Difference in behaviors of two indicator bacteriophages for waterborne pathogenic viruses during drinking water treatment process, and their effective removals by using coagulation–ceramic microfiltration hybrid system, Proceedings of IWA regional conference–membrane technologies in water and waste water treatment, Moscow, Russia, 2–4 June 2008. Good Presentation Award
  23. Shirasaki, N., Matsushita, T., Matsui, Y. and Ohno, K., Effects of reversible and irreversible membrane fouling on virus removal by a coagulation–microfiltration system, Proceedings of IWA International Conference on Particle Separation (PS 2007), Toulouse, France, 9-12 July 2007. Keynote Lecture
  24. Shirasaki, N., Matsushita, T., Matsui, Y., Ohno, K., Kobuke, M., Virus removal in a hybrid coagulation–microfiltration system—Investigating mechanisms of virus removal by a combination of PCR and PFU methods, Proceedings of IWA 4th International Conference on Membranes for Water and Wastewater Treatment, Harrogate, UK, 14-17 May 2007.
  25. Matsushita, T., Matsui, Y. and Shirasaki, N., Analyzing mass balance of viruses in a coagulation-ceramic microfiltration hybrid system by a combination of the polymerase chain reaction (PCR) method and the plaque forming units (PFU) method, Proceedings of IWA International Conference on Particle Separation, 487-494, Seoul, Korea, 1-3 June 2005.
  26. Matsui, Y., Matsushita, T., Sanogawa, T., Shirasaki, N., Aoki, N. and Mima, S., Enhanced removal performances of ceramic MF by submicron PAC adsorption and PACl coagulation pretreatments, Proceedings of AWWA Membrane Technology Conference, Phoenix, AZ, USA, 6-9 March 2005.
  27. Matsushita, T., Matsui, Y., Shirasaki, N. and Kato, Y., Effect of membrane pore size, coagulation time, and coagulant dose on virus removal by a coagulation-ceramic microfiltration hybrid system, Proceedings of EDS 6th International Conference on Membranes in Drinking and Industrial Water Production, L'aquila, Italy, 15-17 November 2004. Keynote Lecture