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Sludge pre-treatments change performance and microbiome in methanogenic sludge digesters by releasing different sludge organic matter
Lu,Qihong1; Yu,Zehui2; Wang,Li1; Liang,Zhiwei1; Li,Haocong1; Sun,Lianpeng1; Shim,Hojae3; Qiu,Rongliang1,4; Wang,Shanquan1
2020-11-01
Source PublicationBioresource Technology
ISSN0960-8524
Volume316
AbstractIn this study, temporal impacts of thermal, alkaline/acid and thermal-alkaline sludge pre-treatments on digestion performance and microbiome were investigated and compared in methanogenic sludge digesters. Results showed that thermal and alkaline/acid pre-treatments were efficient in releasing intracellular and EPS organic matter, respectively. The thermal-alkaline pre-treatment showed synergistic impacts of both thermal and alkaline/acid pre-treatments by releasing the major portion of sludge organic matter from solid- to liquid-phase, which result in 60–65% organic carbon removal in subsequent sludge digestion and further optimizing digestion temperature had negligible improvement. The 16S rRNA gene-based analyses suggested that organic matter released from sludge pre-treatments is a major deterministic parameter in shaping sludge microbiome. Pre-treatment specific lineages were identified in different sludge digesters, whereas several taxa were identified as common functionally active populations in sludge digestion. This study provided mechanistic insights into impacts of pre-treatments on digestion performance and microbiome in methanogenic sludge digesters.
KeywordEPS Methanogenic sludge digestion Sludge microbiome Sludge pre-treatment Waste activated sludge
DOI10.1016/j.biortech.2020.123909
URLView the original
Language英语
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorWang,Shanquan
Affiliation1.Environmental Microbiomics Research Center,School of Environmental Science and Engineering,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai),Sun Yat-Sen University,Guangzhou,510275,China
2.Beijing Enterprises Water Group (China) Investment Limited,Beijing,100102,China
3.Department of Civil and Environmental Engineering,Faculty of Science and Technology,University of Macau,Macau SAR,999078,China
4.Guangdong Laboratory for Lingnan Modern Agriculture,College of Natural Resources and Environment,South China Agricultural University,Guangzhou,510642,China
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GB/T 7714
Lu,Qihong,Yu,Zehui,Wang,Li,et al. Sludge pre-treatments change performance and microbiome in methanogenic sludge digesters by releasing different sludge organic matter[J]. Bioresource Technology,2020,316.
APA Lu,Qihong,Yu,Zehui,Wang,Li,Liang,Zhiwei,Li,Haocong,Sun,Lianpeng,Shim,Hojae,Qiu,Rongliang,&Wang,Shanquan.(2020).Sludge pre-treatments change performance and microbiome in methanogenic sludge digesters by releasing different sludge organic matter.Bioresource Technology,316.
MLA Lu,Qihong,et al."Sludge pre-treatments change performance and microbiome in methanogenic sludge digesters by releasing different sludge organic matter".Bioresource Technology 316(2020).
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