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Title of Paper:Enhancing anaerobic digestion of complex organic waste with carbon-based conductive materials
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Date of Publication:2016-11-01
Journal:BIORESOURCE TECHNOLOGY
Included Journals:SCIE、EI、PubMed、Scopus
Volume:220
Page Number:516-522
ISSN No.:0960-8524
Key Words:Anaerobic digestion; Organic wastes; Carbon-based conductive material; Direct interspecies electron transfer; Methanogenesis
Abstract:The aim of this work was to study the methanogenic metabolism of dog food, a food waste surrogate, in laboratory-scale reactors with different carbon-based conductive materials. Carbon cloth, carbon felt, and granular activated carbon all permitted higher organic loading rates and promoted faster recovery of soured reactors than the control reactors. Microbial community analysis revealed that specific and substantial enrichments of Sporanaerobacter and Methanosarcina were present on the carbon cloth surface. These results, and the known ability of Sporanaerobacter species to transfer electrons to elemental sulfur, suggest that Sporanaerobacter species can participate in direct interspecies electron transfer with Methanosarcina species when carbon cloth is available as an electron transfer mediator. (C) 2016 Elsevier Ltd. All rights reserved.
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