Percarbonate as a naturally buffering catholyte for microbial fuel cells.

Abstract:

:Sustainable cathode development has been a challenge for the emerging microbial fuel cell (MFC) technology. This study presents a simple catholyte called sodium percarbonate to serve as a new type of electron acceptor for MFCs. Lab scale comparisons showed sodium percarbonate cathode obtained comparable power density (9.6W/m(3)) with traditional air-cathode and potassium ferricyanide, but percarbonate showed multiple additional benefits that no other catholyte had demonstrated. Percarbonate has a sustaining natural buffering capacity that can counter pH fluctuations seen in many other systems, and the peroxide produced prevents bio-fouling problems associated with air-cathodes. It is also safer to use and has the lowest cost among popular cathode options based on per mole of electron transferred, which makes it a good candidate for modular system scale up.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Forrestal C,Huang Z,Ren ZJ

doi

10.1016/j.biortech.2014.09.014

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

429-432

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(14)01265-6

journal_volume

172

pub_type

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