Show simple item record

dc.contributor.authorZhou, R
dc.contributor.authorZhang, T
dc.contributor.authorZhou, R
dc.contributor.authorMai-Prochnow, A
dc.contributor.authorPonraj, SB
dc.contributor.authorFang, Z
dc.contributor.authorMasood, H
dc.contributor.authorKananagh, J
dc.contributor.authorMcClure, D
dc.contributor.authorAlam, D
dc.contributor.authorOstrikov, K
dc.contributor.authorCullen, PJ
dc.date.accessioned2021-01-07T02:43:34Z
dc.date.available2021-01-07T02:43:34Z
dc.date.issued2021
dc.identifier.issn0048-9697
dc.identifier.doi10.1016/j.scitotenv.2020.142295
dc.identifier.urihttp://hdl.handle.net/10072/400775
dc.description.abstractComplete degradation of mixtures of organic pollutants is a major challenge due to their diverse degradation pathways. In this work, a novel microplasma bubble (MPB) reactor was developed to generate plasma discharges inside small forming bubbles as an effective mean of delivering reactive species for the degradation of the target organic contaminants. The results show that the integration of plasma and bubbles resulted in efficient degradation for all azo, heterocyclic, and cationic dyes, evidenced by the outstanding energy efficiency of 13.0, 18.1 and 22.1 g/kWh with 3 min of processing, in degrading alizarin yellow (AY), orange II (Orng-II) and methylene blue (MB), individually. The MPB treatment also effectively and simultaneously degraded the dyes in their mixtures such as AY + Orng-II, AY + MB and AY + Orng-II + MB. Scavenger assays revealed that the short-lived reactive species, including the hydroxyl (radical dotOH) and superoxide anion (radical dotO2−) radicals, played the dominant role in the degradation of the pollutants. Possible degradation pathways were proposed based on the intermediate products detected during the degradation process. The feasibility of this proposed strategy was further evaluated using other common water pollutants. Reduced toxicity was confirmed by the observed increases in human cell viability for the treated water. This work could support the future development of high performance- and energy-efficient wastewater abatement technologies.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom142295
dc.relation.ispartofjournalScience of the Total Environment
dc.relation.ispartofvolume750
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchcode41
dc.subject.keywordsOrganic dyes
dc.subject.keywordsPlasma-liquid interaction
dc.subject.keywordsReactive oxygen species
dc.subject.keywordsUnderwater microplasma bubbles
dc.titleUnderwater microplasma bubbles for efficient and simultaneous degradation of mixed dye pollutants
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhou, R; Zhang, T; Zhou, R; Mai-Prochnow, A; Ponraj, SB; Fang, Z; Masood, H; Kananagh, J; McClure, D; Alam, D; Ostrikov, K; Cullen, PJ, Underwater microplasma bubbles for efficient and simultaneous degradation of mixed dye pollutants, Science of the Total Environment, 2021, 750, pp. 142295
dcterms.dateAccepted2020-09-07
dc.date.updated2020-12-22T23:13:31Z
gro.hasfulltextNo Full Text
gro.griffith.authorOstrikov, Ken


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record