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Bioelectrochemical metal recovery from wastewater: a review.
Water Res. 2014 Dec 01; 66:219-232.WR

Abstract

Metal contaminated wastewater posts great health and environmental concerns, but it also provides opportunities for precious metal recovery, which may potentially make treatment processes more cost-effective and sustainable. Conventional metal recovery technologies include physical, chemical and biological methods, but they are generally energy and chemical intensive. The recent development of bioelectrochemical technology provides a new approach for efficient metal recovery, because it offers a flexible platform for both oxidation and reduction reaction oriented processes. While dozens of recent studies demonstrated the feasibility of the bioelectrochemical metal recovery concept, the mechanisms have been different and confusing. This study provides a review that summarizes and discusses the different fundamental mechanisms of metal conversion, with the aim of facilitating the scientific understanding and technology development. While the general approach of bioelectrochemical metal recovery is using metals as the electron acceptor in the cathode chamber and organic waste as the electron donor in the anode chamber, there are so far four mechanisms that have been reported: (1) direct metal recovery using abiotic cathodes; (2) metal recovery using abiotic cathodes supplemented by external power sources; (3) metal conversion using bio-cathodes; and (4) metal conversion using bio-cathodes supplemented by external power sources.

Authors+Show Affiliations

Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA.Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, USA. Electronic address: jason.ren@colorado.edu.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Review

Language

eng

PubMed ID

25216302

Citation

Wang, Heming, and Zhiyong Jason Ren. "Bioelectrochemical Metal Recovery From Wastewater: a Review." Water Research, vol. 66, 2014, pp. 219-232.
Wang H, Ren ZJ. Bioelectrochemical metal recovery from wastewater: a review. Water Res. 2014;66:219-232.
Wang, H., & Ren, Z. J. (2014). Bioelectrochemical metal recovery from wastewater: a review. Water Research, 66, 219-232. https://doi.org/10.1016/j.watres.2014.08.013
Wang H, Ren ZJ. Bioelectrochemical Metal Recovery From Wastewater: a Review. Water Res. 2014 Dec 1;66:219-232. PubMed PMID: 25216302.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioelectrochemical metal recovery from wastewater: a review. AU - Wang,Heming, AU - Ren,Zhiyong Jason, Y1 - 2014/08/22/ PY - 2014/04/04/received PY - 2014/07/02/revised PY - 2014/08/12/accepted PY - 2014/9/13/entrez PY - 2014/9/13/pubmed PY - 2015/8/1/medline KW - Bioelectrochemical system KW - Metal recovery KW - Microbial fuel cell KW - Redox potential KW - Wastewater SP - 219 EP - 232 JF - Water research JO - Water Res VL - 66 N2 - Metal contaminated wastewater posts great health and environmental concerns, but it also provides opportunities for precious metal recovery, which may potentially make treatment processes more cost-effective and sustainable. Conventional metal recovery technologies include physical, chemical and biological methods, but they are generally energy and chemical intensive. The recent development of bioelectrochemical technology provides a new approach for efficient metal recovery, because it offers a flexible platform for both oxidation and reduction reaction oriented processes. While dozens of recent studies demonstrated the feasibility of the bioelectrochemical metal recovery concept, the mechanisms have been different and confusing. This study provides a review that summarizes and discusses the different fundamental mechanisms of metal conversion, with the aim of facilitating the scientific understanding and technology development. While the general approach of bioelectrochemical metal recovery is using metals as the electron acceptor in the cathode chamber and organic waste as the electron donor in the anode chamber, there are so far four mechanisms that have been reported: (1) direct metal recovery using abiotic cathodes; (2) metal recovery using abiotic cathodes supplemented by external power sources; (3) metal conversion using bio-cathodes; and (4) metal conversion using bio-cathodes supplemented by external power sources. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/25216302/Bioelectrochemical_metal_recovery_from_wastewater:_a_review_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(14)00580-6 DB - PRIME DP - Unbound Medicine ER -