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Impact of persulfate and ultraviolet light activated persulfate pre-oxidation on the formation of trihalomethanes, haloacetonitriles and halonitromethanes from the chlor(am)ination of three antibiotic chloramphenicols.
Water Res. 2016 Apr 15; 93:48-55.WR

Abstract

Persulfate oxidation processes, with and without activation using ultraviolet light (respectively UV/PS and PS) have the potential to degrade anthropogenic chemicals in water. However, little is known about the impact of PS or UV/PS pre-oxidation on downstream formation of disinfection by-products (DBPs). In this study the three antibiotic chloramphenicols (chloramphenicol and two of its analogues [thiamphenicol and florfenicol], referred to collectively as CAPs), which frequently occur in wastewater-impacted source waters used by drinking water treatment plants, were selected as model antibiotic compounds. The formation of carbonaceous and nitrogenous disinfection by-products, including halomethanes, haloacetonitriles and halonitromethanes, during chlorination and chloramination preceded by PS and UV/PS was investigated. No significant concentrations of haloacetonitriles and halonitromethanes were detected during chlorination. During chloramination chloramphenicol formed a considerable amount of dichloronitromethane (e.g., 3.44 ± 0.33% mol/mol at NH2Cl dose = 1 mM) and trichloronitromethane (e.g., 0.79 ± 0.07% mol/mol at NH2Cl dose = 1 mM), compared with THM and HAN formation. PS pre-oxidation achieved a statistically significant reduction in trichloromethane formation from chlorination, and in HAN and HNM formation from chloramination. Although UV/PS slightly increased dichloroacetonitrile formation during chloramination, it significantly decreased dichloronitromethane and trichloronitromethane formation during chloramination. Overall, the use of PS and UV/PS has the potential to have contrasting impacts on DBP formation in heavily wastewater-impacted waters, depending on the disinfection method. Hence, their application needs to be carefully balanced against the downstream effect on DBP formation.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Chu W
State Key Laboratory of Pollution Control and Resources Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China. Electronic address: feedwater@126.com.
Chu T
State Key Laboratory of Pollution Control and Resources Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, China.
Bond T
Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK.
Du E
School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, China.
Guo Y
School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, China.
Gao N
State Key Laboratory of Pollution Control and Resources Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China. Electronic address: gaonaiyun@tongji.edu.cn.

MeSH

AcetonitrilesChloramphenicolChlorineDisinfectantsDisinfectionHalogenationHydrocarbons, ChlorinatedMethaneNitroparaffinsOxidation-ReductionSulfidesThiamphenicolTrihalomethanesUltraviolet RaysWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26894475

Citation

Chu, Wenhai, et al. "Impact of Persulfate and Ultraviolet Light Activated Persulfate Pre-oxidation On the Formation of Trihalomethanes, Haloacetonitriles and Halonitromethanes From the Chlor(am)ination of Three Antibiotic Chloramphenicols." Water Research, vol. 93, 2016, pp. 48-55.
Chu W, Chu T, Bond T, et al. Impact of persulfate and ultraviolet light activated persulfate pre-oxidation on the formation of trihalomethanes, haloacetonitriles and halonitromethanes from the chlor(am)ination of three antibiotic chloramphenicols. Water Res. 2016;93:48-55.
Chu, W., Chu, T., Bond, T., Du, E., Guo, Y., & Gao, N. (2016). Impact of persulfate and ultraviolet light activated persulfate pre-oxidation on the formation of trihalomethanes, haloacetonitriles and halonitromethanes from the chlor(am)ination of three antibiotic chloramphenicols. Water Research, 93, 48-55. https://doi.org/10.1016/j.watres.2016.02.013
Chu W, et al. Impact of Persulfate and Ultraviolet Light Activated Persulfate Pre-oxidation On the Formation of Trihalomethanes, Haloacetonitriles and Halonitromethanes From the Chlor(am)ination of Three Antibiotic Chloramphenicols. Water Res. 2016 Apr 15;93:48-55. PubMed PMID: 26894475.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Impact of persulfate and ultraviolet light activated persulfate pre-oxidation on the formation of trihalomethanes, haloacetonitriles and halonitromethanes from the chlor(am)ination of three antibiotic chloramphenicols. AU - Chu,Wenhai, AU - Chu,Tengfei, AU - Bond,Tom, AU - Du,Erdeng, AU - Guo,Yingqing, AU - Gao,Naiyun, Y1 - 2016/02/11/ PY - 2015/12/03/received PY - 2016/02/06/revised PY - 2016/02/08/accepted PY - 2016/2/20/entrez PY - 2016/2/20/pubmed PY - 2016/12/15/medline KW - Chloramphenicols KW - Haloacetonitriles KW - Halonitromethanes KW - Trihalomethanes KW - Ultraviolet/persulfate SP - 48 EP - 55 JF - Water research JO - Water Res VL - 93 N2 - Persulfate oxidation processes, with and without activation using ultraviolet light (respectively UV/PS and PS) have the potential to degrade anthropogenic chemicals in water. However, little is known about the impact of PS or UV/PS pre-oxidation on downstream formation of disinfection by-products (DBPs). In this study the three antibiotic chloramphenicols (chloramphenicol and two of its analogues [thiamphenicol and florfenicol], referred to collectively as CAPs), which frequently occur in wastewater-impacted source waters used by drinking water treatment plants, were selected as model antibiotic compounds. The formation of carbonaceous and nitrogenous disinfection by-products, including halomethanes, haloacetonitriles and halonitromethanes, during chlorination and chloramination preceded by PS and UV/PS was investigated. No significant concentrations of haloacetonitriles and halonitromethanes were detected during chlorination. During chloramination chloramphenicol formed a considerable amount of dichloronitromethane (e.g., 3.44 ± 0.33% mol/mol at NH2Cl dose = 1 mM) and trichloronitromethane (e.g., 0.79 ± 0.07% mol/mol at NH2Cl dose = 1 mM), compared with THM and HAN formation. PS pre-oxidation achieved a statistically significant reduction in trichloromethane formation from chlorination, and in HAN and HNM formation from chloramination. Although UV/PS slightly increased dichloroacetonitrile formation during chloramination, it significantly decreased dichloronitromethane and trichloronitromethane formation during chloramination. Overall, the use of PS and UV/PS has the potential to have contrasting impacts on DBP formation in heavily wastewater-impacted waters, depending on the disinfection method. Hence, their application needs to be carefully balanced against the downstream effect on DBP formation. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/26894475/Impact_of_persulfate_and_ultraviolet_light_activated_persulfate_pre_oxidation_on_the_formation_of_trihalomethanes_haloacetonitriles_and_halonitromethanes_from_the_chlor_am_ination_of_three_antibiotic_chloramphenicols_ DB - PRIME DP - Unbound Medicine ER -