A highly efficient single chambered up-flow membrane-less microbial fuel cell for treatment of azo dye Acid Orange 7-containing wastewater

Bioresource Technology
Wei-Eng ThungHarvinder Kaur Lehl

Abstract

Single chambered up-flow membrane-less microbial fuel cell (UFML MFC) was developed to study the feasibility of the bioreactor for decolorization of Acid Orange 7 (AO7) and electricity generation simultaneously. The performance of UFML MFC was evaluated in terms of voltage output, chemical oxygen demand (COD) and color removal efficiency by varying the concentration of AO7 in synthetic wastewater. The results shown the voltage generation and COD removal efficiency decreased as the initial AO7 concentration increased; this indicates there is electron competition between anode and azo dye. Furthermore, there was a phenomenon of further decolorization at cathode region which indicates the oxygen and azo dye are both compete as electron acceptor. Based on the UV-visible spectra analysis, the breakdown of the azo bond and naphthalene compound in AO7 were confirmed. These findings show the capability of integrated UFML MFC in azo dye wastewater treatment and simultaneous electricity generation.

References

Nov 19, 2005·Water Research·Booki MinBruce E Logan
Sep 27, 2006·Environmental Science & Technology·Bruce E LoganKorneel Rabaey
Aug 14, 2009·Environmental Science & Technology·Yang MuJürg Keller
Jan 23, 2010·Bioresource Technology·Hongrui DingYunhua Yan
Mar 19, 2014·Physical Chemistry Chemical Physics : PCCP·Xitong LiuBingcai Pan

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Citations

Feb 26, 2016·Bioresource Technology·Quanguo ZhangDuu-Jong Lee
May 23, 2019·Environmental Science and Pollution Research International·Seyedeh Nazanin KardiGhasem Najafpour Darzi
May 29, 2018·Applied Biochemistry and Biotechnology·Beenish SabaOlli H Tuovinen
Sep 18, 2021·Journal of Basic Microbiology·Azhan AhmadMakarand Madhao Ghangrekar

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