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Simultaneous copper removal and electricity production and microbial community in microbial fuel cells with different cathode catalysts.

Abstract：

:With graphene oxide (GO), platinum carbon (Pt/C), and reduced graphene oxide (rGO) as cathode catalysts, three types of single-chamber microbial fuel cells (MFCs) were constructed for simultaneous Cu2+ removal and electricity production. Results indicated rGO-MFC and Pt/C-MFC had much better Cu2+-removing and electricity-generating performance than that of GO-MFC, and rGO-MFC presented preferable electrochemical characteristics compared with Pt/C-MFC. Microbial community analysis indicated Geobacter dominated anodic biofilms and was mainly responsible for organics degradation and electricity generation. The dual bio-selective effects by cathode catalyst and toxic Cu2+ resulted in different cathodic microbial communities. At high Cu2+ contents, Nitratireductor, Ochrobactrum, and Serratia as efficient Cu2+-removing genera played key roles in Pt/C-MFC, and Azoarcus predominant in cathodic biofilms of rGO-MFC might be important contributor for the favorable performance in this case.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Wu Y,Wang L,Jin M,Zhang K

doi

10.1016/j.biortech.2020.123166

subject

Has Abstract

pub_date

2020-06-01 00:00:00

pages

123166

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(20)30437-5

journal_volume

305

pub_type

杂志文章

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