Bioelectricity generation from urban waste water using a microbial fuel cell by different bacterial species

Authors : Yogananda BS, Sadananda TS, Govindappa M & Anil Kumar NV

Abstract

The aim of present study is to investigate the possibility of better treatment of urban waste water for microbial electricity generation and evaluation of different bacterial species to know their efficacy in generation of high current. A prototype reactor (MFC –graphite electrode without any coating) was built and tested using waste water obtained from local waste water treatment plant. We report here our preliminary findings using this reactor that demonstrate for the first time electricity generation accompanied by waste water treatment demonstrated by the removal of organic matter in the form of chemical oxygen demand (COD) and biochemical oxygen demand (BOD). We used different species of bacteria such as Escherichia coli, Agrobacterium tumafaciens, Pseudomonas fluorescens and Pseudomonas syringae pv. syringae (brown spot in beans) in order to check efficiency in electricity generation in individually as well as in combination of all.