Development of a Photosynthetic Microbial Electrochemical Cell PMEC Reactor Coupled with Dark Fermentation of Organic Wastes: Medium Term PerspectivesReportar como inadecuado




Development of a Photosynthetic Microbial Electrochemical Cell PMEC Reactor Coupled with Dark Fermentation of Organic Wastes: Medium Term Perspectives - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Dipartimento di Scienza Applicata e Tecnologia, DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy





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Academic Editor: Haolin Tang

Abstract In this article the concept, the materials and the exploitation potential of a photosynthetic microbial electrochemical cell for the production of hydrogen driven by solar power are investigated. In a photosynthetic microbial electrochemical cell, which is based on photosynthetic microorganisms confined to an anode and heterotrophic bacteria confined to a cathode, water is split by bacteria hosted in the anode bioactive film. The generated electrons are conveyed through external -bio-appendages- developed by the bacteria to transparent nano-pillars made of indium tin oxide ITO, Fluorine-doped tin oxide FTO or other conducting materials, and then transferred to the cathode. On the other hand, the generated protons diffuse to the cathode via a polymer electrolyte membrane, where they are reduced by the electrons by heterotrophic bacteria growing attached to a similar pillared structure as that envisaged for the anode and supplemented with a specific low cost substrate e.g., organic waste, anaerobic digestion outlet. The generated oxygen is released to the atmosphere or stored, while the produced pure hydrogen leaves the electrode through the porous layers. In addition, the integration of the photosynthetic microbial electrochemical cell system with dark fermentation as acidogenic step of anaerobic digester, which is able to produce additional H2, and the use of microbial fuel cell, feed with the residues of dark fermentation mainly volatile fatty acids, to produce the necessary extra-bias for the photosynthetic microbial electrochemical cell is here analyzed to reveal the potential benefits to this novel integrated technology. View Full-Text

Keywords: photosynthetic microbial electrochemical cell; dark fermentation; anaerobic digestion; microbial fuel cell photosynthetic microbial electrochemical cell; dark fermentation; anaerobic digestion; microbial fuel cell





Autor: Samir Bensaid * , Bernardo Ruggeri and Guido Saracco

Fuente: http://mdpi.com/



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