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dc.contributor.authorNiu, Qianqian
dc.contributor.authorXu, Qiuxiang
dc.contributor.authorWang, Yali
dc.contributor.authorWang, Dongbo
dc.contributor.authorLiu, Xuran
dc.contributor.authorLiu, Yiwen
dc.contributor.authorWang, Qilin
dc.contributor.authorNi, Bing-Jie
dc.contributor.authorYang, Qi
dc.contributor.authorLi, Xiaoming
dc.contributor.authorLi, Hailong
dc.date.accessioned2019-07-05T00:17:27Z
dc.date.available2019-07-05T00:17:27Z
dc.date.issued2019
dc.identifier.issn0960-8524
dc.identifier.doi10.1016/j.biortech.2019.121363
dc.identifier.urihttp://hdl.handle.net/10072/386140
dc.description.abstractThis study presents a novel and effective method, i.e., adding nitrite into acidic fermentations after ultrasonic (US) pretreatment to form free nitrous acid (FNA), to further enhance hydrogen yield. Experimental results showed that when 180 mg/L nitrite was added into the US (2 W/mL, 15 min) pretreated waste activated sludge (WAS), the maximal hydrogen yield of 24.81 ± 1.24 mL/g VSS (volatile suspended solids) was obtained under acidic fermentation (1.0 mg/L FNA was initially formed under this condition), which was 2.21-folds (or 1.36-folds) of that from US pretreatment (or FNA treatment) alone. This combination approach caused a positive synergy on sludge disintegration and enhanced the transformation of the released organics from non-biodegradable to biodegradable. Further study showed that the inhibiting effect of this combination method on hydrogen consuming microorganism was severer. Considering its pollution free, this combination strategy is an attractive technology for hydrogen recovery from WAS.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom121363
dc.relation.ispartofpageto121363
dc.relation.ispartofjournalBioresource Technology
dc.relation.ispartofvolume285
dc.subject.fieldofresearchEnvironmental engineering
dc.subject.fieldofresearchcode4011
dc.titleEnhanced hydrogen accumulation from waste activated sludge by combining ultrasonic and free nitrous acid pretreatment: Performance, mechanism, and implication
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorWang, Qilin


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