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dc.contributor.authorSun, Jing
dc.contributor.authorDai, Xiaohu
dc.contributor.authorPeng, Lai
dc.contributor.authorLiu, Yiwen
dc.contributor.authorWang, Qilin
dc.contributor.authorNi, Bing-Jie
dc.date.accessioned2021-01-06T23:08:02Z
dc.date.available2021-01-06T23:08:02Z
dc.date.issued2017
dc.identifier.issn1873-3212
dc.identifier.doi10.1016/j.cej.2017.06.136
dc.identifier.urihttp://hdl.handle.net/10072/400744
dc.description.abstractPerchlorate (ClO4−) is recognized as an important contaminant in surface water and groundwater, which would pose health risks at very low concentrations. A methane-based membrane biofilm reactor (MBfR) has been successfully demonstrated for perchlorate reduction, which provided an alternative solution for perchlorate remediation with low cost. In this work, a multispecies biofilm model was developed to evaluate perchlorate reduction in the methane-based MBfR under different operational conditions. The model was calibrated and validated using the experimental data from the long-term operation of the MBfR at seven distinct stages. The results suggested that the developed model could satisfactorily describe perchlorate reduction and denitrification performances in the MBfR (R2 > 0.9). The modeling results provided insight into the microbial community distribution in the biofilm, with aerobic methanotrophs and perchlorate reduction bacteria being mainly located at the membrane side (∼60%) and heterotrophic bacteria being situated near the liquid side (∼50%). The model simulations indicated that over 80% of perchlorate removal efficiency could be achieved through controlling the optimal combinations of methane pressure (PCH4) and perchlorate loading (LClO4) (e.g., applying a PCH4 of 30 kPa at a LClO4 of 0.08 g Cl/m2/d). In addition, the perchlorate reduction would be inhibited by the presence of nitrate and nitrite in the MBfR, which should be appropriately controlled during the future practical application of the promising process.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.relation.ispartofpagefrom555
dc.relation.ispartofpageto563
dc.relation.ispartofjournalChemical Engineering Journal
dc.relation.ispartofvolume327
dc.subject.fieldofresearchChemical engineering
dc.subject.fieldofresearchChemical engineering not elsewhere classified
dc.subject.fieldofresearchCivil engineering
dc.subject.fieldofresearchEnvironmental engineering
dc.subject.fieldofresearchcode4004
dc.subject.fieldofresearchcode400499
dc.subject.fieldofresearchcode4005
dc.subject.fieldofresearchcode4011
dc.subject.keywordsScience & Technology
dc.subject.keywordsEngineering
dc.titleA biofilm model for assessing perchlorate reduction in a methane-based membrane biofilm reactor
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationSun, J; Dai, X; Peng, L; Liu, Y; Wang, Q; Ni, B-J, A biofilm model for assessing perchlorate reduction in a methane-based membrane biofilm reactor, Chemical Engineering Journal, 2017, 327, pp. 555-563
dc.date.updated2021-01-06T23:06:59Z
gro.hasfulltextNo Full Text
gro.griffith.authorWang, Qilin


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