Performance of electron acceptors in catholyte of a two-chambered microbial fuel cell using anion exchange membrane

Pandit, Soumya; Sengupta, Arupananda; Kale, S. P.; Das, Debabrata

doi:10.1016/j.biortech.2010.11.038

Cited by 109 publications

(27 citation statements)

References 26 publications

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“…Pandit 6 ] were, by contrast, much lower. Moreover, it is found that the change in concentration induced very little change in the OCP of the MFCs for a particular type of electron acceptor, however, significant change was observed in the maximum power density [165].…”

Section: Manganesementioning

confidence: 93%

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Behavior of metal ions in bioelectrochemical systems: A review

Dingming

et al. 2015

Journal of Power Sources

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Section: Manganesementioning

confidence: 93%

“…The higher concentrations of electron acceptors posed a problem with AEM, where they migrated over to the anode compartment and hindered the microbial growth [165]. Due to the versatility of BESs, metal ions can be selectively reduced at the cathode via applying specific voltages.…”

Section: Coppermentioning

confidence: 99%

Behavior of metal ions in bioelectrochemical systems: A review

Dingming

et al. 2015

Journal of Power Sources

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“…The physicochemical characteristics of Cr(VI) containing wastewater will very much vary from the strongly acidic chrome plating wastewater (Li et al 2008) to the alkaline chromite ore processing wastewater (Stewart et al 2007). Various treatment approaches exist but an effective remediation option involves Cr(VI) reduction to the considerably less toxic trivalent form (Cr(III)) (Brandhuber et al 2004;Palmer and Puls 1994), according to Eq. 1:…”

Section: Introductionmentioning

confidence: 99%

Evaluating hexavalent chromium reduction and electricity production in microbial fuel cells with alkaline cathodes

Xafenias

Zhang

Banks

2014

Int. J. Environ. Sci. Technol.

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The work investigated the efficiency of microbial fuel cells (MFCs) for the treatment of alkaline hexavalent chromium containing wastewater. When lactate was used as the metal chelator in alkaline (pH 8) abiotic cathodes, hexavalent chromium concentration dropped from 10 mg l -1 to undetectable levels within the first 45 h of operation. Power density produced in the pH 8 abiotic cathodes was up to 21.4 mW m -2 , and in the pH 9 cathodes up to 2.4 mW m -2 ; these values were well comparable with other values found in the literature for biologically catalysed cathodes, even at lower pH values. When Shewanella oneidensis MR-1 was present in a hexavalent chromium reducing cathode at pH 8, current production contributed by 26 % to the total hexavalent chromium reduced during the 36 days of operation. On the other hand, when hexavalent chromium (10 mg l -1 ) was controllably added in the anode where S. oneidensis MR-1 was present, up to 73 % of current decreased immediately after every hexavalent chromium addition; this toxic effect remained even after hexavalent chromium was depleted in the anode and strongly indicates that the presence of hexavalent chromium in the anodes of MFCs must be avoided. Overall, our results indicate that alkaline hexavalent chromium wastewater can be effectively remediated in the cathodes of MFCs, provided that a metal chelator is present in the cathodes and that hexavalent chromium is not present in the anodes.

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“…The bacteria which are able to catalyze the oxidation of organic matter and transfer electrons directly are easily colonized on graphite electrode surfaces and can transfer electrons to the anode with relative ease [93][94][95][96]. However, their ohmic resistance is 1000 times higher than metals [67,97]. Some researchers have modified graphite electrodes by coating with electron mediators, active polymers, polyaniline and quinone groups to improve their performance [83,[98][99][100].…”

Section: Anodic Materials and Surface Areamentioning

confidence: 99%