DOI: 10.1016/j.jcou.2016.03.003
Scopus记录号: 2-s2.0-84962540910
论文题名: Imperative role of applied potential and inorganic carbon source on acetate production through microbial electrosynthesis
作者: Mohanakrishna G. ; Vanbroekhoven K. ; Pant D.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 15 语种: 英语
英文关键词: Artificial photosynthesis
; Bioelectrochemistry
; Cathodic potential
; CO2 reduction
; Electroactive biofilm
; Microbial electrosynthesis
Scopus关键词: Biochemistry
; Crack propagation
; Efficiency
; Electrodes
; Electrophysiology
; Fuel cells
; Graphite electrodes
; Artificial photosynthesis
; Bioelectrochemistry
; Cathodic potentials
; Electro actives
; Microbial electrosynthesis
; Carbon dioxide
英文摘要: Graphical abstract: Microbial electrosynthesis (MES) is a novel technology that produces organic molecules from the reduction of carbon dioxide (CO2) at biocathode. MES system is a hybrid device that combines components of biological and fuel cells in a single system for chemicals/energy generation from inexpensive substrates. Present study evaluates the influence of cathodic potentials (−800mV and −600mV) on reduction of CO2 to acetate using enriched acetogenic bacteria as the biocatalyst at 30°C using graphite and VITO carbon electrodes as cathode and anode respectively. The first stage of evaluation of bicarbonate as carbon source was continued to second stage where gaseous CO2 used as C source. In both the stages −800mV showed higher acetate production efficiency. MES reactor with cathodic potential of −800mV showed 4.05 and 5.45gacetate/L respectively during first and second stage. Changing the carbon source of the systems from bicarbonate to CO2 positively influence the performance. Moreover, change in operation mode from continuous to batch resulted in improved acetate production rate, which also proved that the performance was reproducible and stable. Continuous CO2 supply maintained the pH near neutral which might explain the traces of ethanol produced in the system. Higher coulombic efficiency was also registered with −800mV operation than −600mV. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52895
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Mohanakrishna G.,Vanbroekhoven K.,Pant D.. Imperative role of applied potential and inorganic carbon source on acetate production through microbial electrosynthesis[J]. Journal of CO2 Utilization,2016-01-01,15