Microbial electrochemical technologies with the perspective of harnessing bioenergy: Maneuvering towards upscaling. (January 2016)

• Record Type: Journal Article
• Authors: Butti, Sai Kishore; Velvizhi, G.; Sulonen, Mira L.K.; Haavisto, Johanna M.; Oguz Koroglu, Emre; Yusuf Cetinkaya, Afsin; Singh, Surya; Arya, Divyanshu; Annie Modestra, J.; Vamsi Krishna, K.; Verma, Anil; Ozkaya, Bestami; Lakaniemi, Aino-Maija; Puhakka, Jaakko A.; Venkata Mohan, S.
• Is Part Of: Renewable & sustainable energy reviews. Volume 53(2016:Jan.)
• Page Start: 462
• Page End: 476
• Publication Date: 2016-01
• Subjects: AEM Anion exchange membranes -- Ag/AgCl Silver/Silver chloride -- BES Bioelectrochemical system -- BESA 2-bromoethanesulfonic acid -- BET Bioelectrochemical treatment system -- CE Coulombic efficiency -- CEM Cation exchange membrane -- COD Chemical oxygen demand -- Co-OMS-2 Copper cryptomelane-type octahedral molecular sieve -- CoTMPP Cobalt tetra methyl phenyl porphyrin -- DET Direct electron transfer -- e− Electrons -- EAB Electrochemically active bacteria -- ED Electron discharge -- EET Extracellular electron transfer -- FePc Iron phthalocyanine -- H+ Protons -- MEC Microbial electrolytic cell -- MES Microbial electrochemical systems -- MET Mediated electron transfer -- MFC Microbial fuel cell -- MnO2 Manganese oxides -- MWCNT Carbon based multiwalled nanotubes -- PbO2 Lead oxide -- PBS Phosphate-buffered saline -- PD Power density -- PDMS Poly-dimethylsiloxane -- PMS Power management systems -- RBEC Rotatable bioelectrochemical contractor -- SHE Standard hydrogen electrode -- TEA Terminal electron acceptor -- TEAP Terminal electron accepting process -- UFM Ultrafiltration membrane -- VFA Volatile fatty acids -- WWMFC Overflow-type wetted-wall MFC; Microbial fuel cell -- Bioelectrochemical system -- Biocatalyst -- Electrode materials -- Fuel cell design.; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.rser.2015.08.058
• Languages: English
• ISSNs: 1364-0321

Abstract

Abstract: Microbial electrochemical technologies have gained much attention in the recent years during which basic research has been carried out to provide proof of concept by utilizing microorganisms for generating bioenergy in an electro redox active environment. However, these bio-electrocatalyzed systems pose significant challenges towards up-scaling and practical applications. Various parameters viz., electrodes, materials, configuration, biocatalyst, reaction kinetics, fabrication and operational costs, resistance for electron transfer etc. will critically govern the performance of microbial catalyzed electrochemical systems. Majorly, the surface area of electrode materials, biofilm coverage on the electrode surface, enrichment of electrochemically active electrode respiring bacteria and reduction reactions at cathode will aid in increasing the reaction kinetics towards the upscaling of microbial electrochemical technologies. Enrichment of electroactive microbial community on anode electrode can be promoted with electrode pretreatment, controlled anode potential or electrical current, external resistance, optimal operation temperature, chemical additions and bioaugmentation . Inhibition of the growth of methanogens also increases the columbic efficiency, an essential parameter that determines the efficacy of bioelectricity generation. Considering the practical implementation of these microbial electrochemical technologies, the current review addresses the challenges and strategies to improve the performance of bio-electrocatalyzed systems with respect to the operational, physico-chemical and biological factors towards scale up. Besides, the feasibility for long term operation, the scope for future research along with the operational and maintenance costs are discussed to provide a broad spectrum on the role of the system components for the implementation of these bio-electrochemical technologies for practical utility.