BioChem - DOS

Formic acid production using a microbial electrolysis desalination and chemical-production cell

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Lu, Yaobin; Luo, Haiping; Yang, Kunpeng; Liu, Guangli; Zhang, Renduo; Li, Xiao; Ye, Bo

<P><B>Abstract</B></P> <P>The aim of this study was to investigate the feasibility and optimization of formic acid production in the microbial electrolysis desalination and chemical-production cell (MEDCC). The maximum current density in the MEDCC with 72cm of the anode fiber length (72-MEDCC) reached 24.0&plusmn;2.0A/m<SUP>2</SUP>, which was much higher than previously reported. The maximum average formic acid production rate in the 72-MEDCC was 5.28 times higher than that in the MEDCC with 24cm of the anode fiber length (37.00&plusmn;1.15vs. 7.00&plusmn;0.25mg/h). High performance in the 72-MEDCC was attributed to small membrane spacing (1mm), high flow rate (1500&mu;L/min) on the membrane surface and high anode biomass. The minimum electricity consumption of 0.34&plusmn;0.04kWh/kg in the 72-MEDCC was only 3.1&ndash;18.8% of those in the EDBMs. The MEDCC should be a promising technology for the formic acid production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The maximum current density in this study was much higher than previously reported. </LI> <LI> The electric consumption in the 72-MEDCC was 3.1&ndash;18.8% of those in the EDBMs. </LI> <LI> The mechanism of high performance in the 72-MEDCC was discussed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

2017

Elsevier

0960-8524

243

pp.118-125

10.1016/j.biortech.2017.06.059

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART78577611

Formic acid production; Microbial electrolysis desalination and chemical-production cell; Energy consumption; Current efficiency