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Article: Anaerobic digestion of chemically enhanced primary treatment (CEPT) sludge and the microbial community structure

TitleAnaerobic digestion of chemically enhanced primary treatment (CEPT) sludge and the microbial community structure
Authors
Issue Date2016
PublisherSpringer. The Journal's web site is located at http://link.springer.de/link/service/journals/00253/index.htm
Citation
Applied Microbiology and Biotechnology, 2016, v. 100 n. 20, p. 8975–8982 How to Cite?
AbstractThe effectiveness and treatment conditions of FeCl3- and AlCl3-coagulated municipal sewage sludge from chemically enhanced primary treatment (CEPT) using anaerobic digestion (AD) and the structure of microbial community were investigated. The results based on 297 measurements under different operational conditions demonstrate good average AD performance of CEPT sludge, that is, percent volatile solid reduction of 58 %, specific biogas production (or biogas yield) of 0.92 m3/kg volatile solids (VS) destroyed, and methane content of 65.4 %. FeCl3 dosing, organic loading rate, temperature, and hydraulic retention time all significantly affected AD performance. FeCl3 dosing greatly improved specific methane production (methane yield) by 38–54 % and significantly reduced hydrogen sulfide (H2S) content in biogas (from up to 13,250 to <200 ppm), contributing to higher methane recovery and simplified biogas cleaning for power generation. Metagenomic analysis suggested that anaerobic digesters of both CEPT sludge and combined primary and secondary sludge were dominated by Bacteroidetes, Proteobacteria, Firmicutes, Actinobacteria, Thermotogae, and Chloroflexi. However, Methanomicrobia methanogens were better enriched in the anaerobic digesters of CEPT sludge than in the combined sludge. Further, different sources of CEPT sludge with various chemical properties nurtured shared and unique microbial community composition. Combined, this study supports AD as an efficient technology for CEPT sludge treatment and poses first insights into the microbial community structure.
Persistent Identifierhttp://hdl.handle.net/10722/231696
ISSN
2015 Impact Factor: 3.376
2015 SCImago Journal Rankings: 1.262

 

DC FieldValueLanguage
dc.contributor.authorJu, F-
dc.contributor.authorWANG, Y-
dc.contributor.authorLau, FRANKIE-
dc.contributor.authorFung, W.C.-
dc.contributor.authorHuang, DANPING-
dc.contributor.authorXia, Y-
dc.contributor.authorZhang, T-
dc.date.accessioned2016-09-20T05:24:55Z-
dc.date.available2016-09-20T05:24:55Z-
dc.date.issued2016-
dc.identifier.citationApplied Microbiology and Biotechnology, 2016, v. 100 n. 20, p. 8975–8982-
dc.identifier.issn0175-7598-
dc.identifier.urihttp://hdl.handle.net/10722/231696-
dc.description.abstractThe effectiveness and treatment conditions of FeCl3- and AlCl3-coagulated municipal sewage sludge from chemically enhanced primary treatment (CEPT) using anaerobic digestion (AD) and the structure of microbial community were investigated. The results based on 297 measurements under different operational conditions demonstrate good average AD performance of CEPT sludge, that is, percent volatile solid reduction of 58 %, specific biogas production (or biogas yield) of 0.92 m3/kg volatile solids (VS) destroyed, and methane content of 65.4 %. FeCl3 dosing, organic loading rate, temperature, and hydraulic retention time all significantly affected AD performance. FeCl3 dosing greatly improved specific methane production (methane yield) by 38–54 % and significantly reduced hydrogen sulfide (H2S) content in biogas (from up to 13,250 to <200 ppm), contributing to higher methane recovery and simplified biogas cleaning for power generation. Metagenomic analysis suggested that anaerobic digesters of both CEPT sludge and combined primary and secondary sludge were dominated by Bacteroidetes, Proteobacteria, Firmicutes, Actinobacteria, Thermotogae, and Chloroflexi. However, Methanomicrobia methanogens were better enriched in the anaerobic digesters of CEPT sludge than in the combined sludge. Further, different sources of CEPT sludge with various chemical properties nurtured shared and unique microbial community composition. Combined, this study supports AD as an efficient technology for CEPT sludge treatment and poses first insights into the microbial community structure.-
dc.languageeng-
dc.publisherSpringer. The Journal's web site is located at http://link.springer.de/link/service/journals/00253/index.htm-
dc.relation.ispartofApplied Microbiology and Biotechnology-
dc.rightsThe final publication is available at Springer via http://dx.doi.org/[insert DOI]-
dc.titleAnaerobic digestion of chemically enhanced primary treatment (CEPT) sludge and the microbial community structure-
dc.typeArticle-
dc.identifier.emailXia, Y: shuixia@hku.hk-
dc.identifier.emailZhang, T: zhangt@hkucc.hku.hk-
dc.identifier.authorityZhang, T=rp00211-
dc.identifier.doi10.1007/s00253-016-7730-2-
dc.identifier.hkuros264802-
dc.identifier.volume100-
dc.identifier.issue20-
dc.identifier.spage8975–8982-
dc.identifier.epage8975–8982-
dc.publisher.placeGermany-

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