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Degradation of sulfonamides and formation of trihalomethanes by chlorination after pre-oxidation with Fe(VI).
J Environ Sci (China). 2018 Nov; 73:89-95.JE

Abstract

Sulfonamides are used in human therapy, animal husbandry and agriculture but are not easily biodegradable, and are often detected in surface water. Sulfamethazine (SMZ) and sulfadiazine (SDZ) are two widely used sulfonamide antibiotics that are used heavily in agriculture. In this study, they were degraded in an aqueous system by chlorination after pre-oxidation with ferrate(VI) (FeVIO42-, Fe(VI)), an environmentally friendly oxidation technique that has been shown to be effective in degrading various organics. The kinetics of the degradation were determined as a function of Fe(VI) (0-1.5mg/L), free chlorine (0-1.8mg/L) and temperature (15-35°C). According to the experimental results, SMZ chlorination followed second-order kinetics with increasing Fe(VI) dosage, and the effect of the initial free chlorine concentration on the reaction kinetics with pre-oxidation by Fe(VI) fitted a pseudo-first order model. The rate constants of SDZ and SMZ chlorination at different temperatures were related to the Arrhenius equation. Fe(VI) could reduce the levels of THMs formed and the toxicity of the sulfonamide degradation systems with Fe(VI) doses of 0.5-1.5mg/L, which provides a reference for ensuring water quality in drinking water systems.

Authors+Show Affiliations

College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China. Electronic address: ztq@zju.edu.cn.College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China.College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China.College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China. Electronic address: congil@zju.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30290875

Citation

Zhang, Tuqiao, et al. "Degradation of Sulfonamides and Formation of Trihalomethanes By Chlorination After Pre-oxidation With Fe(VI)." Journal of Environmental Sciences (China), vol. 73, 2018, pp. 89-95.
Zhang T, Dong F, Luo F, et al. Degradation of sulfonamides and formation of trihalomethanes by chlorination after pre-oxidation with Fe(VI). J Environ Sci (China). 2018;73:89-95.
Zhang, T., Dong, F., Luo, F., & Li, C. (2018). Degradation of sulfonamides and formation of trihalomethanes by chlorination after pre-oxidation with Fe(VI). Journal of Environmental Sciences (China), 73, 89-95. https://doi.org/10.1016/j.jes.2018.01.016
Zhang T, et al. Degradation of Sulfonamides and Formation of Trihalomethanes By Chlorination After Pre-oxidation With Fe(VI). J Environ Sci (China). 2018;73:89-95. PubMed PMID: 30290875.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of sulfonamides and formation of trihalomethanes by chlorination after pre-oxidation with Fe(VI). AU - Zhang,Tuqiao, AU - Dong,Feilong, AU - Luo,Feng, AU - Li,Cong, Y1 - 2018/02/02/ PY - 2017/11/08/received PY - 2018/01/16/revised PY - 2018/01/17/accepted PY - 2018/10/7/entrez PY - 2018/10/7/pubmed PY - 2018/11/1/medline KW - Ferrate(VI) KW - Free chlorine KW - Sulfadiazine KW - Sulfamethazine KW - Trihalomethanes SP - 89 EP - 95 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 73 N2 - Sulfonamides are used in human therapy, animal husbandry and agriculture but are not easily biodegradable, and are often detected in surface water. Sulfamethazine (SMZ) and sulfadiazine (SDZ) are two widely used sulfonamide antibiotics that are used heavily in agriculture. In this study, they were degraded in an aqueous system by chlorination after pre-oxidation with ferrate(VI) (FeVIO42-, Fe(VI)), an environmentally friendly oxidation technique that has been shown to be effective in degrading various organics. The kinetics of the degradation were determined as a function of Fe(VI) (0-1.5mg/L), free chlorine (0-1.8mg/L) and temperature (15-35°C). According to the experimental results, SMZ chlorination followed second-order kinetics with increasing Fe(VI) dosage, and the effect of the initial free chlorine concentration on the reaction kinetics with pre-oxidation by Fe(VI) fitted a pseudo-first order model. The rate constants of SDZ and SMZ chlorination at different temperatures were related to the Arrhenius equation. Fe(VI) could reduce the levels of THMs formed and the toxicity of the sulfonamide degradation systems with Fe(VI) doses of 0.5-1.5mg/L, which provides a reference for ensuring water quality in drinking water systems. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/30290875/Degradation_of_sulfonamides_and_formation_of_trihalomethanes_by_chlorination_after_pre_oxidation_with_Fe_VI__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1001-0742(17)33200-X DB - PRIME DP - Unbound Medicine ER -