NDLI: Biogas Generation from a 2-Phase Sludge Treatment System

Content Provider	IEEE Xplore Digital Library
Author	Mann, T.S. Goh, T. Phay, W.
Copyright Year	2013
Description	Author affiliation: IESE, Nanyang Technol. Univ., Singapore, Singapore (Phay, W.) \|\| Keppel Environ. Technol. Centre Pte Ltd., Singapore, Singapore (Mann, T.S.) \|\| Sch. of Sci. & Technol., SIM Univ., Singapore, Singapore (Goh, T.)
Abstract	The degradation of sewage sludge in single stage and 2 phase anaerobic systems was investigated in bench-scale batch reactors. Average COD reduction efficiency in 2 phase system in this initial phase of the study was 4.5% (30 days HRT) and 3.3% (20 days HRT) higher compared to single stage system. Reducing the HRT from 30 days to 20 days had little influence in VS reduction in the two systems. The average methane content in the biogas was 61.8%, 66.5%, and 64.8% (30 days HRT) in acid reactor, methane reactor and single stage reactor, respectively, and the corresponding values were 57.7%, 66.5% and 64.9% at 20 days HRT. The microbial community analyzed by qPCR using primer/probes specific for orders of Archaea involved in methanogenesis showed that hydrogen and acetate utilizing methanogens were present in all the reactors, but relative abundance of methanogens in the acid reactor was lower compared to the methane and single stage reactors. Reducing the HRT from 30 days to 20 days decreased the relative abundance of methanogens and changed the methanogen community structure.
Sponsorship	IEEE Denver Sect.
Starting Page	16
Ending Page	21
File Size	591642
Page Count	6
File Format	PDF
ISBN	9781467351911
ISSN	21665478
e-ISBN	9780769549668
DOI	10.1109/GreenTech.2013.84
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Degradation Single stage Communities Hydrogen Production QPCR Educational institutions Microbial communities Dge digestion 2-phase Inductors Probes
Content Type	Text
Resource Type	Article

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