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Bimodal electricity generation and aromatic compounds removal from purified terephthalic acid plant wastewater in a microbial fuel cell

Marashi, S. K. F ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1007/s10529-012-1063-8
  3. Publisher: 2013
  4. Abstract:
  5. Wastewater of purified terephthalic acid (PTA) from a petrochemical plant was examined in a membrane-less single chamber microbial fuel cell for the first time. Time course of voltage during the cell operation cycle had two steady phases, which refers to the fact that metabolism of microorganisms was shifted from highly to less biodegradable carbon sources. The produced power density was 31.8 mW m-2 (normalized per cathode area) and the calculated coulombic efficiency was 2.05 % for a COD removal of 74 % during 21 days. The total removal rate of different pollutants in the PTA wastewater was observed in the following order: (acetic acid) > (benzoic acid) > (phthalic acid) > (terephthalic acid) > (p-toluic acid). The cyclic voltammetry results revealed that the electron transfer mechanism was dominated by mediators which were produced by bacteria
  6. Keywords:
  7. Bioelectricity generation ; Microbial fuel cell ; Petrochemical wastewater ; Purified terephthalic acid wastewater ; Benzoic acid ; Carbon source ; Cathode area ; Cell operation ; COD removal ; Coulombic efficiency ; Electricity generation ; Electron transfer mechanisms ; Phthalic acid ; Power densities ; Purified terephthalic acid ; Terephthalic acids ; Time course ; Total removal rates ; Acetic acid ; Bioelectric phenomena ; Carboxylic acids ; Cyclic voltammetry ; Electric generators ; Electron transitions ; Electrophysiology ; Petrochemical plants ; Purification ; Microbial fuel cells ; Hydrocarbon ; Bacterium ; Biochemical oxygen demand ; Bioenergy ; chemistry ; Industrial waste ; Metabolism ; Microbiology ; Waste water ; Water pollutant ; Bacteria ; Bioelectric Energy Sources ; Biological Oxygen Demand Analysis ; Carbon ; Electricity ; Hydrocarbons, Cyclic ; Water Pollutants, Chemical ; Bacteria (microorganisms)
  8. Source: Biotechnology Letters ; Volume 35, Issue 2 , 2013 , Pages 197-203 ; 01415492 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs10529-012-1063-8