Electricity production and microbial community in psychrophilic microbial fuel cells at 10 °C.

Abstract:

:Psychrophilic microbial fuel cell (PMFC) offers an alternative method for low temperature wastewater treatment, but is seldom reported. In this study, the two-chamber PMFC was constructed at 10 °C using acetate as an electron donor. The maximum voltage under external resistance of 1000 Ω was around 550 mV. The columbic efficiency (CE) was 82.4% under external resistance of 100 Ω and the max power density was 582.4 mW/m2. After temperature decreasing to 4 °C, the maximum voltage also reached 530 mV and CE was 38.4%. The direct electron transfer was proposed in PMFC according to cyclic voltammetry curves. The short enriching time (~30 days) of biofilm in the anodic electrode may be due to the high activity of enriched novel exoelectrogens of M. fermentans (46.2%) and E. lemanii (15.4%). The development of PMFC involved biotechnologies in low temperature regions shall benefit for valuable chemicals production and energy generation in the future.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Dai K,Sun T,Yan Y,Qian DK,Zhang W,Zhang F,Jianxiong Zeng R

doi

10.1016/j.biortech.2020.123680

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

123680

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(20)30952-4

journal_volume

313

pub_type

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