Office of Commercialization  Bio-electrochemical Wastewater Treatment System
Bio-electrochemical Wastewater Treatment System

Bio-electrochemical Wastewater Treatment System


Unmet Need: Effective strategies for wastewater treatment.

The treatment of municipal wastewater is an energy intensive process, with the delivery of oxygen as a soluble electron acceptor accounting a significant share of the total energy consumption. There is a need to find low-cost effective ways of wastewater treatment.

The Technology: Switchable dual-mode wastewater treatment system.

Earlier, Microbial fuel cells (MFC) have been proposed as a solution to reduce energy requirements but they can demonstrate power generation only under defined conditions.  Researchers at WSU have developed a switchable dual-mode bio-electrochemical wastewater treatment system by combining polarized electrodes with microbial fuel cells. It is a multiple bipotentiostat electronic platform capable of polarizing multiple anode and cathode pairs in the same ionic wastewater container with shared electrolyte medium.


•       Municipal wastewater treatment.


•       Low cost biopotentiostatic enrichment of efficient anodes/cathodes enrichment.

•       MFCs with failed cathodes were recovered after bipotentiostatic polarization.

•       The system could be operated for more than 12 months without interruption.

•       Polarization changes microbial community to improve wastewater treatment.



Patent Information:

Provisional patent application filed


Patent Information: