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Indexed by:期刊论文

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.