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dc.contributor.authorXu, Qiuxiang
dc.contributor.authorLiu, Xuran
dc.contributor.authorFu, Yingying
dc.contributor.authorLi, Yifu
dc.contributor.authorWang, Dongbo
dc.contributor.authorWang, Qilin
dc.contributor.authorLiu, Yiwen
dc.contributor.authorAn, Hongxue
dc.contributor.authorZhao, Jianwei
dc.contributor.authorWu, Yanxin
dc.contributor.authorLi, Xiaoming
dc.contributor.authorYang, Qi
dc.contributor.authorZeng, Guangming
dc.date.accessioned2019-07-11T03:03:44Z
dc.date.available2019-07-11T03:03:44Z
dc.date.issued2018
dc.identifier.issn0960-8524
dc.identifier.doi10.1016/j.biortech.2018.07.018
dc.identifier.urihttp://hdl.handle.net/10072/382327
dc.description.abstractThis study reported a new, renewable and high-efficient strategy for anaerobic fermentation, i.e., using free ammonia (FA) to pretreat waste activated sludge (WAS) for 1 d and then combining with rhamnolipid (RL), by which the short-chain fatty acids (SCFA) production was remarkably improved. Experimental results showed the maximal SCFA production of 324.7 ± 13.9 mg COD/g VSS was achieved at 62.6 mg FA/L pretreatment combined with 0.04 g RL/g TSS, which was respectively 5.95-fold, 1.63-fold and 1.41-fold of that from control, FA pretreatment and RL pretreatment. Mechanism investigations revealed that FA + RL enhanced sludge solubilization and hydrolysis, providing more organics for subsequent SCFA production. It was also found that the combined method inhibited acidogenesis and methanogenesis, but the inhibition to methanogenesis was much severer than that to acidogenesis. Finally, the feasibility of NH4+-N and PO3−4-P, released in fermentation liquor, being recovered as magnesium ammonium phosphate (MAP) was confirmed.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.relation.ispartofpagefrom141
dc.relation.ispartofpageto148
dc.relation.ispartofjournalBioresource Technology
dc.relation.ispartofvolume267
dc.subject.fieldofresearchOther environmental sciences not elsewhere classified
dc.subject.fieldofresearchcode419999
dc.titleFeasibility of enhancing short-chain fatty acids production from waste activated sludge after free ammonia pretreatment: Role and significance of rhamnolipid
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2018 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorWang, Qilin


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