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Aeration-assisted sulfite activation with ferrous for enhanced chloramphenicol degradation.
Chemosphere. 2020 Jan; 238:124599.C

Abstract

In this study, an Fe(Ⅱ)/S(IV) system was designed for the degradation of chloramphenicol (CAP). The pseudo-first-order rate constants for CAP degradation under typical conditions with and without air purging were investigated. The greatly enhanced rate of 0.0099 min-1 with air purging compared with 0.0006 min-1 with no air purging indicated that aeration was significant to the degradation of CAP in Fe(Ⅱ)/S(Ⅳ) system. Radical scavenging experiments revealed that SO4- was the primary oxidant generated from the activation of S(IV) with Fe(II), accounting for around 70% of degradation under weak acidic and neutral conditions. Increasing Fe(II) and S(IV) doses promoted the degradation of CAP, whereas the overdose of them led to a decreased degradation rate by scavenging radicals. Owing to the participation of oxygen in the formation of ferric sulfite complex and SO5-, the increase of dissolved oxygen improved the removal efficiency of CAP. The removal efficiency of CAP was also found to be pH dependent, decreasing from acid condition (initial pH = 4) to basic condition (initial pH = 8). The presence of coexisting anions and water matrix was found inhibiting CAP degradation in Fe(Ⅱ)/S(Ⅳ) system. This work provides an understanding on the working mechanism and possible applications of Fe(Ⅱ)/S(Ⅳ) system in organic compound degradation in wastewater.

Authors+Show Affiliations

Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address: shunmao@tongji.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31454743

Citation

Chen, Xiaoyan, et al. "Aeration-assisted Sulfite Activation With Ferrous for Enhanced Chloramphenicol Degradation." Chemosphere, vol. 238, 2020, p. 124599.
Chen X, Miao W, Yang Y, et al. Aeration-assisted sulfite activation with ferrous for enhanced chloramphenicol degradation. Chemosphere. 2020;238:124599.
Chen, X., Miao, W., Yang, Y., Hao, S., & Mao, S. (2020). Aeration-assisted sulfite activation with ferrous for enhanced chloramphenicol degradation. Chemosphere, 238, 124599. https://doi.org/10.1016/j.chemosphere.2019.124599
Chen X, et al. Aeration-assisted Sulfite Activation With Ferrous for Enhanced Chloramphenicol Degradation. Chemosphere. 2020;238:124599. PubMed PMID: 31454743.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Aeration-assisted sulfite activation with ferrous for enhanced chloramphenicol degradation. AU - Chen,Xiaoyan, AU - Miao,Wei, AU - Yang,Yulin, AU - Hao,Sibei, AU - Mao,Shun, Y1 - 2019/08/19/ PY - 2019/05/14/received PY - 2019/08/12/revised PY - 2019/08/15/accepted PY - 2019/8/28/pubmed PY - 2020/1/2/medline PY - 2019/8/28/entrez KW - Advanced oxidation process KW - Aeration KW - Chloramphenicol KW - Ferrous KW - Sulfite SP - 124599 EP - 124599 JF - Chemosphere JO - Chemosphere VL - 238 N2 - In this study, an Fe(Ⅱ)/S(IV) system was designed for the degradation of chloramphenicol (CAP). The pseudo-first-order rate constants for CAP degradation under typical conditions with and without air purging were investigated. The greatly enhanced rate of 0.0099 min-1 with air purging compared with 0.0006 min-1 with no air purging indicated that aeration was significant to the degradation of CAP in Fe(Ⅱ)/S(Ⅳ) system. Radical scavenging experiments revealed that SO4- was the primary oxidant generated from the activation of S(IV) with Fe(II), accounting for around 70% of degradation under weak acidic and neutral conditions. Increasing Fe(II) and S(IV) doses promoted the degradation of CAP, whereas the overdose of them led to a decreased degradation rate by scavenging radicals. Owing to the participation of oxygen in the formation of ferric sulfite complex and SO5-, the increase of dissolved oxygen improved the removal efficiency of CAP. The removal efficiency of CAP was also found to be pH dependent, decreasing from acid condition (initial pH = 4) to basic condition (initial pH = 8). The presence of coexisting anions and water matrix was found inhibiting CAP degradation in Fe(Ⅱ)/S(Ⅳ) system. This work provides an understanding on the working mechanism and possible applications of Fe(Ⅱ)/S(Ⅳ) system in organic compound degradation in wastewater. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/31454743/Aeration_assisted_sulfite_activation_with_ferrous_for_enhanced_chloramphenicol_degradation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(19)31823-5 DB - PRIME DP - Unbound Medicine ER -