title: Metabolic and practical considerations on microbial electrosynthesis.
abstract: The production of biofuels and biochemicals is highly electron intensive. To divert fermentative and respiratory pathways to the product of interest, additional electrons (i.e. reducing power) are often needed. Meanwhile, the past decade has seen the breakthrough of sustainable electricity sources such as solar and wind. Microbial electrosynthesis (MES) is at the nexus of both, as it uses electrical energy as source of reducing power for microorganisms. This review addresses the key opportunities and challenges for MES. While exciting as a concept, MES needs to overcome many biological, electrochemical, logistical and economic challenges. Particularly the latter is critical, as on a 'per electron basis' MES does not yet appear to deliver a substantial benefit relative to existing approaches.
authors.affiliation: Advanced Water Management Centre, The University of Queensland, Brisbane, Queensland 4072, Australia. k.rabaey@uq.edu.au
authors.forename: Korneel
authors.initials: K
authors.lastname: Rabaey
authors.forename: Peter
authors.initials: P
authors.lastname: Girguis
authors.forename: Lars K
authors.initials: LK
authors.lastname: Nielsen
mesh_terms: D056804:Biofuels / Q000191:economics; D053898:Biosynthetic Pathways; D002244:Carbon / Q000378:metabolism; D003362:Cost-Benefit Analysis; D020372:Dexfenfluramine; D004560:Electricity; D004583:Electrons; D005285:Fermentation; D005947:Glucose / Q000378:metabolism; D008827:Microbiological Phenomena
chemical_list: D056804:Biofuels; D002244:Carbon; D020372:Dexfenfluramine; D005947:Glucose