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dc.contributor.authorWang, Qilin
dc.contributor.authorZhou, Xu
dc.contributor.authorPeng, Lai
dc.contributor.authorWang, Dongbo
dc.contributor.authorXie, Guo-Jun
dc.contributor.authorYuan, Zhiguo
dc.date.accessioned2017-06-13T03:21:50Z
dc.date.available2017-06-13T03:21:50Z
dc.date.issued2016
dc.identifier.issn0045-6535
dc.identifier.doi10.1016/j.chemosphere.2016.02.035
dc.identifier.urihttp://hdl.handle.net/10072/339758
dc.description.abstractPost aerobic digestion of anaerobically digested sludge (ADS) has been extensively applied to the wastewater treatment plants to enhance sludge reduction. However, the degradation of ADS in the post aerobic digester itself is still limited. In this work, an innovative free nitrous acid (HNO2 or FNA)-based pretreatment approach is proposed to improve full-scale ADS degradation in post aerobic digester. The post aerobic digestion was conducted by using an activated sludge to aerobically digest ADS for 4 days. Degradations of the FNA-treated (treated at 1.0 and 2.0 mg N/L for 24 h) and untreated ADSs were then determined and compared. The ADS was degraded by 26% and 32%, respectively, in the 4-day post aerobic digestion period while being pretreated at 1.0 and 2.0 mg HNO2–N/L. In comparison, only 20% of the untreated ADS was degraded. Economic analysis demonstrated that the implementation of FNA pretreatment can be economically favourable or not depending on the sludge transport and disposal cost.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom152
dc.relation.ispartofpageto158
dc.relation.ispartofjournalChemosphere
dc.relation.ispartofvolume150
dc.subject.fieldofresearchEnvironmental biotechnology not elsewhere classified
dc.subject.fieldofresearchcode410399
dc.titleEnhancing post aerobic digestion of full-scale anaerobically digested sludge using free nitrous acid pretreatment
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorWang, Qilin


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