Joel N'Dah KOFFI / Postdoctoral Researcher


Dec. 2020
Doctor of Engineering, Department of Environmental Engineering, Hokkaido University, Hokkaido, Japan

Sap. 2010 - Jul. 2012
Master of Science in Water and Environmental Engineering Option Water and Sanitation, International Institute for Water and Environmental Engineering ( 2iE)  Ouagadougou Burkina Faso.

Sep. 2007 - Jul. 2010
Bachelor of Science in Water and Environmental Engineering, International Institute for Water and Environmental Engineering (2iE) Ouagadougou Burkina Faso.

Jul. 2002 - Jul. 2005
Mathematics and Physical Science, Faculty of Mathematics and Physical Science, Abidjan, Ivory Coast.

Professional Experiences
Dec. 2012 - Mar. 2015

Hydraulics Engineer, Terrabo Engineer Office Abidjan Ivory coast


Main qualification:
Design, modelling and sizing of drinking water supply and sanitation network;

  • Technical studies (Water supply, sanitation, broad irrigation area);
  • Design and simulation of drinking water network;
  • Drinking water network modeling;
  • Design and modeling of wastewater and drainage system;
  • Design of wastewater treatment plant;
  • Design and modelling of drip irrigation system;
  • Planning and management of water resources and hydraulic infrastructure;
Jan. 2012

Environmental Trainee Researcher


Theme: Study of wastewater treatment plant by hierarchical mosaic of artificial ecosystems (M.H.E.A®), 2iE Ouagadougou Burkina Faso.

This study is one of the projects being developed by the institute 2iE said. It aims to develop sanitation facilities can process in a way optimal and sustainable wastewater produced by the population in the site of Kamboinsé (Burkina Faso). The specific objectives of this project were to collect and treat wastewater from student’s communities and the reuse of these treated effluents for agricultural intent. To achieve this goal, we designed and sized an extensive treatment system called Hierarchical Mosaic of Artificial Ecosystems (M.H.E.A®).

Current research topic

Theme:  Self-sustaining integrated MFC-LVB-(R) and MFC-LVB(M) system for wastewater treatment and energy recovery: From theory to practical application
Microbial Fuel Cell (MFC) technology has emerged as a low-cost, space-saving, and sustainable technology capable of treating wastewater and generating bioelectricity. MFC reactor employs Anode Respiring Bacteria (ARB) to oxidize organic (COD) and inorganic (NH4+) pollutants anaerobically and transfer electrons to a solid-state anode through extracellular electron transfer (anodic respiration). The MFC technology applied for COD removal and harnessing bioelectricity could be associated with a Microbial Electrochemical Cell (MEC), which is an aeration-free technology for simultaneous anodic nitrification (anodic NH4+ oxidation) and denitrification. MFC can successfully remove COD (> 80%) and SS (> 90%) from domestic wastewater with a low sludge accumulation (sludge yield: 0.10 gVSS/g-sCOD removed) (Koffi and Okabe, 2020a). Furthermore, MFC equipped with a Low Voltage Booster system (LVB-M/R) (Koffi and Okabe, 2020a, 2020b) can harvest usable bioelectricity. Also, MFC electrically powers MEC for simultaneous bioelectrochemical anodic nitrification and cathodic denitrification (cost-effective nitrogen removal) (Koffi and Okabe, 2021). The lab-scale Integrating MFC-LVB(M/R) technology is an innovative and sustainable approach to address domestic wastewater treatment issues, with less sludge accumulation as a bonus and usable bioelectricity generation. This proposed integrated MFC-LVB(M/R) for low-cost domestic wastewater treatment (COD and NH4+) and usable electrical energy recovery could address scalability and energy- self-sufficiency challenges.

Journal Papers
  1. Bioelectrochemical anoxic ammonium nitrogen removal by an MFC driven single chamber microbial electrolysis cell.
    Koffi, N.J., Okabe S.
    Chemosphere, 2021, 274, 129715.
  2. Domestic wastewater treatment and energy harvesting by serpentine up-flow MFCs equipped with PVDF-based activated carbon air-cathodes and a low voltage booster
    Koffi, N.J., Okabe S.
    Chemical Engineering Journal, 2020, 380, 122443.
  3. High voltage generation from wastewater by microbial fuel cells equipped with a newly designed low voltage booster multiplier (LVBM)
    Koffi, N.J., Okabe S.
    Scientific Reports, 2020, 10, 18985.
Conference presentations
  1. Air-cathode Microbial Fuel Cell for Cost-effective Domestic Wastewater Treatment
    N'Dah Joel Koffi, Satoshi Okabe
    Water and Environment Technology Conference (WET2017)(July 22-23, 2017, Hokkaido University)