Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/150789
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dc.contributor.authorOh, Wen-Daen_US
dc.contributor.authorChang, Victor Wei-Chungen_US
dc.contributor.authorLim, Teik-Thyeen_US
dc.date.accessioned2021-06-02T03:22:38Z-
dc.date.available2021-06-02T03:22:38Z-
dc.date.issued2019-
dc.identifier.citationOh, W., Chang, V. W. & Lim, T. (2019). A comprehensive performance evaluation of heterogeneous Bi2Fe4O9/peroxymonosulfate system for sulfamethoxazole degradation. Environmental Science and Pollution Research, 26(2), 1026-1035. https://dx.doi.org/10.1007/s11356-017-8476-9en_US
dc.identifier.issn0944-1344en_US
dc.identifier.urihttps://hdl.handle.net/10356/150789-
dc.description.abstractIn this study, a Bi2Fe4O9 catalyst with nanoplate morphology was fabricated using a facile hydrothermal method. It was used as a catalyst to activate peroxymonosulfate (PMS) for aqueous sulfamethoxazole (SMX) removal. A comprehensive performance evaluation of the Bi2Fe4O9/PMS system was conducted by investigating the effects of pH, PMS dosage, catalyst loading, SMX concentration, temperature, and halides (Cl− and Br−) on the degradation of SMX. The Bi2Fe4O9/PMS system demonstrated a remarkable catalytic activity with >95% SMX removal within 30 min (conditions: pH 3.8, [Bi2Fe4O9] = 0.1 g L−1, [SMX]:[PMS] mol ratio =1:20). It was found that both Cl− and Br− can lead to the formation of PMS–induced reactive halide species (i.e. HClO, HBrO, and Br2) which can also react with SMX forming halogenated SMX byproducts. Based on the detected degradation byproducts, the major SMX degradation pathway in the Bi2Fe4O9/PMS system is proposed. The SMX degradation by Bi2Fe4O9/PMS system in the wastewater secondary effluent (SE) was also investigated. The results showed that SMX degradation rate in the SE was relatively slower than in the deionized water due to (i) reactive radical scavenging by water matrix species found in SE (e.g.: dissolved organic matters (DOCs), etc.), and (ii) partial deactivation of the catalyst by DOCs. Nevertheless, the selectivity of the SO4•− towards SMX degradation was evidenced from the rapid SMX degradation despite the high background DOCs in the SE. At least four times the dosage of PMS is required for SMX degradation in the SE to achieve a similar SMX removal efficiency to that of the deionized water matrix.en_US
dc.language.isoenen_US
dc.relation.ispartofEnvironmental Science and Pollution Researchen_US
dc.rights© 2017 Springer-Verlag Berlin Heidelberg. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleA comprehensive performance evaluation of heterogeneous Bi2Fe4O9/peroxymonosulfate system for sulfamethoxazole degradationen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.identifier.doi10.1007/s11356-017-8476-9-
dc.identifier.pmid28130722-
dc.identifier.scopus2-s2.0-85010754871-
dc.identifier.issue2en_US
dc.identifier.volume26en_US
dc.identifier.spage1026en_US
dc.identifier.epage1035en_US
dc.subject.keywordsPeroxymonosulfateen_US
dc.subject.keywordsBismuth Ferriteen_US
item.grantfulltextnone-
item.fulltextNo Fulltext-
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