Electro-stimulated microbial factory for value added product synthesis. (August 2016)

• Record Type: Journal Article
• Authors: Roy, Shantonu; Schievano, Andrea; Pant, Deepak
• Is Part Of: Bioresource technology. Volume 213(2016)
• Page Start: 129
• Page End: 139
• Publication Date: 2016-08
• Subjects: Bioelectricity -- Wastewater -- Electron transport -- Bioreactor design -- Microbial factory; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.03.052
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Microbial electrosynthesis is next frontier for alternate biosynthesis and biomass refining. Many electroactive bacteria with unique external electron transport systems work in MES. For improved productivity of MES, an efficient bioreactor design is mandatory. So far, CO2 has been the main a substrate for bioproduction in MES but it can be extended to other substrates. Abstract: Interplay of charge between bacteria and electrode has led to emergence of bioelectrochemical systems which leads to applications such as production of electricity, wastewater treatment, bioremediation and production of value added products. Many electroactive bacteria have been identified that have unique external electron transport systems. Coupling of electron transport with carbon metabolism has opened a new approach of carbon dioxide sequestration. The electron transport mechanism involves various cellular and sub cellular molecules. The outer membrane cytochromes, Mtr-complex and Ech-complex are few key molecules involved in electron transport in many electrogenic bacteria. Few cytochrome independent acetogenic electroactive bacteria were also discovered using Rnf complex to transport electrons. For improved productivity, an efficient bioreactor design is mandatory. It should encompass all certain critical issues such as microbial cell retention, charge dissipation, separators and simultaneous product recovery.