An in-depth study of substrate effect on the performance of BOD sensor type microbial fuel cell

Nowadays, instant assessment of the organic content in wastewater is an urgent requirement to reduce water pollution. Microbial fuel cells (MFCs) can be used as effective biosensors for rapidly measuring BOD concentration wastewater. However, wastewaters from different sources may consist diverse chemical components, which affect BOD-measuring performance MFC-type biosensors. Therefore, this research, we tested input substrates sensor type MFC (MFC_BOD) investigate their effects on MFC. The belonging groups such carbohydrates, acids, amino acids and some chlorinated compounds (xenobiotics) were at concentrations equivalent levels 10 200 mg L-1. Concurrently, also analyzed alteration bacterial community anode when with those by using PCR-DGGE. Our results showed that MFC_BOD could have linear current-to-BOD responses (with respective R2 values >0.9) more metabolizable acid glycerol; while it responded less sensitively degrees (serine, threonine methionine) did not respond chloroform chlorobenzene (chlorinated compounds). PCA analysis surprisingly imply solely due bio(electro)chemical processes associated but changes composition community. suggest that, enable accurately sense BODs containing recalcitrant or toxic substrates, special procedures are required enrich communities acclimated right beginning