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microbial electrosynthesis
Microbial electrosynthesis is a form of microbial electrocatalysis in which electrons are supplied to living microorganisms via a cathode in an electrochemical cell by applying an electric current. The electrons are then used by the microorganisms to reduce carbon dioxide to yield industrially relevant products. The electric current would ideally be produced by a renewable source of power.〔(Microbial Electrosynthesis: Feeding Microbes Electricity To Convert Carbon Dioxide and Water to Multicarbon Extracellular Organic Compounds )〕
This process is the opposite to that employed in a microbial fuel cell, in which microorganisms transfer electrons from the oxidation of compounds to an anode to generate an electric current.
==Comparison to microbial electrolysis cells==
Microbial electrosynthesis is related to microbial electrolysis cells (MEC). Both use the interactions of microorganisms with a cathode to reduce chemical compounds, but differ in the source of power for this process. In microbial
electrosynthesis electrons are supplied solely by the external electrical power source. In MECs, an electrical power source is used to augment the electrical potential produced by the microorganisms consuming a source of chemical energy such as acetic acid. The combined potential provided by the power source and the microorganisms is then sufficient to for example reduce hydrogen ions to molecular hydrogen.〔(Microbial Electrolysis Cell - Turning Bacteria Into Hydogen Machines )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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