Recovery of chromium, copper and vanadium combined with electricity generation in two-chambered microbial fuel cells.
FEMS Microbiol Lett
; 367(15)2020 08 01.
Article
em En
| MEDLINE
| ID: mdl-32756958
ABSTRACT
Microbial fuel cells (MFCs) offer a promising solution towards recovery and treatment of heavy metal pollutants. In this study, two-chambered MFCs were employed for recovery of chromium, copper and vanadium (Cr (VI), Cu (II) and V (V)). One g/L concentrations of K2Cr2O7, CuCl2 and NaVO3 served as catholytes, while a mixed culture was used as anolyte. Cr (VI), Cu (II) and V (V) were reduced biologically into less toxic forms of Cr (III), Cu and V (IV) respectively. Power density and cathodic efficiency were calculated for each of the catholytes. Cr (VI) gave the maximum power density and cathodic efficiency due to its high redox potential. Current produced depended on the concentration of the catholyte. Over a period of time, biological reduction of catholytes lead to decrease in the metal concentrations, which demonstrated the application of MFC technology towards heavy metal treatment and recovery in a reasonably cost-effective manner.
Palavras-chave
Texto completo:
1
Temas:
ECOS
/
Aspectos_gerais
Bases de dados:
MEDLINE
Assunto principal:
Vanádio
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Fontes de Energia Bioelétrica
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Cromo
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Cobre
Idioma:
En
Revista:
FEMS Microbiol Lett
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Índia