Characterization of methane production and microbial community shifts during waste activated sludge degradation in microbial electrolysis cells
Microbial electrolysis cell (MECs) were investigated as a promising technology to manage waste activated sludge (WAS) reduction and bio-methane generation. The effect of WAS concentration on the MECs performance was discussed. At the optimal concentration of 15gCOD/L, maximum methane yield of MECs f...
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| Veröffentlicht in: | Bioresource technology 2015-01, Vol.175, p.68-74 |
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| creator | Sun, Rui Zhou, Aijuan Jia, Jianna Liang, Qing Liu, Qian Xing, Defeng Ren, Nanqi |
| description | Microbial electrolysis cell (MECs) were investigated as a promising technology to manage waste activated sludge (WAS) reduction and bio-methane generation. The effect of WAS concentration on the MECs performance was discussed. At the optimal concentration of 15gCOD/L, maximum methane yield of MECs fed with alkaline pretreated WAS (A-WAS) were achieved with the value of 77.13±2.52LCH4/kg-COD on Day 3, which had been improved by 1.5-fold compared with MECs fed with raw WAS (R-WAS), while that was negligible in open circuit controls. Efficient sludge reduction was also obtained in terms of TCOD, total protein, TSS and VSS removal. Pyrosequencing revealed the dominance of exoelectrogen Geobacter and hydrogen-producing bacteria Petrimonas in MECs fed with WAS. Methanocorpusculum with the capacity of methane generation using CO2 and H2 also showed overwhelming dominance (96.01%). The large proportions of Petrimonas and Methanocorpusculum indicated the occurrence of hydrogenotrophic methanogenesis in our methane-producing MECs. |
| doi_str_mv | 10.1016/j.biortech.2014.10.052 |
| format | Article |
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The effect of WAS concentration on the MECs performance was discussed. At the optimal concentration of 15gCOD/L, maximum methane yield of MECs fed with alkaline pretreated WAS (A-WAS) were achieved with the value of 77.13±2.52LCH4/kg-COD on Day 3, which had been improved by 1.5-fold compared with MECs fed with raw WAS (R-WAS), while that was negligible in open circuit controls. Efficient sludge reduction was also obtained in terms of TCOD, total protein, TSS and VSS removal. Pyrosequencing revealed the dominance of exoelectrogen Geobacter and hydrogen-producing bacteria Petrimonas in MECs fed with WAS. Methanocorpusculum with the capacity of methane generation using CO2 and H2 also showed overwhelming dominance (96.01%). The large proportions of Petrimonas and Methanocorpusculum indicated the occurrence of hydrogenotrophic methanogenesis in our methane-producing MECs.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2014.10.052</identifier><identifier>PMID: 25459805</identifier><language>eng</language><publisher>England</publisher><subject>Activated sludge ; Bacteria ; Bacteria - metabolism ; Bioreactors - microbiology ; Dominance ; Electrolysis ; Electrolytic cells ; Geobacter ; Methane ; Methane - biosynthesis ; Methanocorpusculum ; Methanomicrobiales ; Microorganisms ; Refuse Disposal - methods ; Sewage - microbiology ; Wastes</subject><ispartof>Bioresource technology, 2015-01, Vol.175, p.68-74</ispartof><rights>Copyright © 2014 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c443t-b92bd5e2e95e72dd10d8393a60912ce788f0454e8ad6c61ae8ebf4f0b314167d3</citedby><cites>FETCH-LOGICAL-c443t-b92bd5e2e95e72dd10d8393a60912ce788f0454e8ad6c61ae8ebf4f0b314167d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25459805$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sun, Rui</creatorcontrib><creatorcontrib>Zhou, Aijuan</creatorcontrib><creatorcontrib>Jia, Jianna</creatorcontrib><creatorcontrib>Liang, Qing</creatorcontrib><creatorcontrib>Liu, Qian</creatorcontrib><creatorcontrib>Xing, Defeng</creatorcontrib><creatorcontrib>Ren, Nanqi</creatorcontrib><title>Characterization of methane production and microbial community shifts during waste activated sludge degradation in microbial electrolysis cells</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>Microbial electrolysis cell (MECs) were investigated as a promising technology to manage waste activated sludge (WAS) reduction and bio-methane generation. The effect of WAS concentration on the MECs performance was discussed. At the optimal concentration of 15gCOD/L, maximum methane yield of MECs fed with alkaline pretreated WAS (A-WAS) were achieved with the value of 77.13±2.52LCH4/kg-COD on Day 3, which had been improved by 1.5-fold compared with MECs fed with raw WAS (R-WAS), while that was negligible in open circuit controls. Efficient sludge reduction was also obtained in terms of TCOD, total protein, TSS and VSS removal. Pyrosequencing revealed the dominance of exoelectrogen Geobacter and hydrogen-producing bacteria Petrimonas in MECs fed with WAS. Methanocorpusculum with the capacity of methane generation using CO2 and H2 also showed overwhelming dominance (96.01%). The large proportions of Petrimonas and Methanocorpusculum indicated the occurrence of hydrogenotrophic methanogenesis in our methane-producing MECs.</description><subject>Activated sludge</subject><subject>Bacteria</subject><subject>Bacteria - metabolism</subject><subject>Bioreactors - microbiology</subject><subject>Dominance</subject><subject>Electrolysis</subject><subject>Electrolytic cells</subject><subject>Geobacter</subject><subject>Methane</subject><subject>Methane - biosynthesis</subject><subject>Methanocorpusculum</subject><subject>Methanomicrobiales</subject><subject>Microorganisms</subject><subject>Refuse Disposal - methods</subject><subject>Sewage - microbiology</subject><subject>Wastes</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkctuFDEQRS0EIkPgFyIv2fRQfruXaBQCUqRsknXLbVfPeNSPYLuJhp_IL9PDJFF2sCrp6tatxyHkgsGaAdNf9us2Tqmg3605MLmIa1D8DVkxa0TFa6PfkhXUGiqruDwjH3LeA4Bghr8nZ1xJVVtQK_K42bnkfMEUf7sSp5FOHR2w7NyI9D5NYfZ_VTcGOkSfpja6nvppGOYxlgPNu9iVTMOc4rilDy4XpEtc_OUKBpr7OWyRBtwmF07xcXyVgz36kqb-kGOmHvs-fyTvOtdn_PRUz8ndt8vbzffq-ubqx-brdeWlFKVqa94GhRxrhYaHwCBYUQunoWbco7G2A6kkWhe018yhxbaTHbSCSaZNEOfk8yl3ufHnjLk0Q8zHDZa7pzk3zAIYENzCv61aMWEtt-o_rNIAaMPlYtUn6_KLnBN2zX2Kg0uHhkFzRNzsm2fEzRHxUV8QL40XTzPmdsDw0vbMVPwBl4OooA</recordid><startdate>201501</startdate><enddate>201501</enddate><creator>Sun, Rui</creator><creator>Zhou, Aijuan</creator><creator>Jia, Jianna</creator><creator>Liang, Qing</creator><creator>Liu, Qian</creator><creator>Xing, Defeng</creator><creator>Ren, Nanqi</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H97</scope><scope>L.G</scope><scope>P64</scope><scope>SOI</scope><scope>7SU</scope><scope>7TB</scope><scope>KR7</scope><scope>7X8</scope></search><sort><creationdate>201501</creationdate><title>Characterization of methane production and microbial community shifts during waste activated sludge degradation in microbial electrolysis cells</title><author>Sun, Rui ; 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The effect of WAS concentration on the MECs performance was discussed. At the optimal concentration of 15gCOD/L, maximum methane yield of MECs fed with alkaline pretreated WAS (A-WAS) were achieved with the value of 77.13±2.52LCH4/kg-COD on Day 3, which had been improved by 1.5-fold compared with MECs fed with raw WAS (R-WAS), while that was negligible in open circuit controls. Efficient sludge reduction was also obtained in terms of TCOD, total protein, TSS and VSS removal. Pyrosequencing revealed the dominance of exoelectrogen Geobacter and hydrogen-producing bacteria Petrimonas in MECs fed with WAS. Methanocorpusculum with the capacity of methane generation using CO2 and H2 also showed overwhelming dominance (96.01%). The large proportions of Petrimonas and Methanocorpusculum indicated the occurrence of hydrogenotrophic methanogenesis in our methane-producing MECs.</abstract><cop>England</cop><pmid>25459805</pmid><doi>10.1016/j.biortech.2014.10.052</doi><tpages>7</tpages></addata></record> |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Activated sludge Bacteria Bacteria - metabolism Bioreactors - microbiology Dominance Electrolysis Electrolytic cells Geobacter Methane Methane - biosynthesis Methanocorpusculum Methanomicrobiales Microorganisms Refuse Disposal - methods Sewage - microbiology Wastes |
| title | Characterization of methane production and microbial community shifts during waste activated sludge degradation in microbial electrolysis cells |
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