Microbial Fuel Cell Application for Azoic Dye Decolorization with Simultaneous Bioenergy Production Using Stenotrophomonas sp.

Abstract

A single‐chamber air‐cathode microbial fuel cell (MFC) was successfully applied for decolorization of the diazoic dye Reactive Black 5 (RB5) with simultaneous production of electricity. An innovative low‐cost medium, the marine water‐glucose‐yeast extract medium (MWGY), was developed which appears as a textile marine effluent in terms of salinity. The anode compartment containing a single bacterial strain of Stenotrophomonas sp. showed almost complete dye decolorization with different RB5 concentrations after seven days of treatment. For the four dye concentrations used, a correlation between dye removal and production of electrical energy was found. The comparison of the decolorization process in the MFC with that in a batch reactor as control experiment highlights the efficiency of the single‐chamber air‐cathode MFC technology which improved the dye removal by the same bacterial strain.

Deciphering the Anode-Enhanced Azo Dye Degradation in Anaerobic Baffled Reactors Integrating With Microbial Fuel Cells

“…Compared to the ABR community, the abundances of seven genera were higher whereas nine genera were lower than those in the MFC-ABR ( P < 0.05, Table 1 ). Among genera enriched in the MFC-ABR, Pseudomonas showed increasing abundance along the flow direction, which was consistent with its versatile capacities including azo dye reduction, electricity generation, aromatic compounds biodegradation and fermentation ( Galai et al, 2015 ). The other MFC-ABR-enriched genera have also shown capacities such as EET ( Serratia , Stenotrophomonas ), azo-dye reduction ( Stenotrophomonas ) or aromatic compounds degradation ( Dysgonomonas , Brevundimonas , and Achromobacter ) ( Jin et al, 2015 ; Paul et al, 2015 ; Hao et al, 2016 ), and most of them showed increasing abundances along with the flow direction.…”

Denitrifying bio-cathodes developed from constructed wetland sediments exhibit electroactive nitrate reducing biofilms dominated by the genera Azoarcus and Pontibacter

“…Moreover, this genus is quite well known and documented in the MFC research field for the electroactivity of some of its species [55] and more specially for their ability to bio-electrochemically degrade azo dyes [56,57].…”

Simultaneous Decolorization of Methyl Red and Generation of Electricity in Microbial Fuel Cell by Bacillus circulans NPP1

“…Capital costs for biological wastewater treatment processes are 5-20 times less compared to advanced oxidation methods and the running costs are 3-10 times less. In order to reduce cost of treatment, the simultaneous degradation of dye wastewater and generation of electricity using MFCs has achieved considerable attention as an economical and environmentally friendly technique [2][3][4][5][6]. MFCs are bio-electrochemical devices that use microbes as catalysts to produce electricity by oxidizing organic and inorganic compounds in biomass.…”