naa a22 4500 510751229 CHVBK 20180411083105.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1493-5 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1493-5 The Influence of Cu(II) on the Formation and Distribution of Disinfection By-Products during the Chlorination of Drinking Water [Elektronische Daten] [Shao-gang Liu, Zhi-liang Zhu, Xue-cai Tan, Xin-hui Feng, Zai-yin Huang, Yan-ling Qiu, Jian-fu Zhao] The catalytic effect of Cu(II) on the formation of disinfection by-products (DBPs) and chlorine degradation during chlorination of humic acid (HA) solutions was comparatively investigated under different experimental conditions. The experimental results showed that the total organic halogen (TOX) and trihalomethane (THM) formation increased with increasing Cu(II) concentration during chlorination, while haloacetic acids (HAAs) increased insignificantly. Accelerated chlorine decay and increased TOX and HAA formation were observed at high pH in the presence of 1.0mg/L Cu(II) compared with that observed at low pH but THM formation decrease. Furthermore, the Cu(II) effect catalyzed the formation of brominated DBPs as it did for chlorine analogues in the presence of bromide ion. The microcalorimetry analysis demonstrated that more DBPs were formed in the Cu(II)-catalyzed chlorination, in which second-order rate constants obtained from reaction of HA with chlorine under given experimental conditions were 0.00256M−1 s−1 (without Cu(II)) and 0.00865M−1 s−1 (with Cu(II)), respectively. To discriminately examine the role of Cu(II) in greater detail, nine model compounds, which approximately represent the chemical structural units of HA, were individually oxidized by chlorine. It was demonstrated that carboxylic acids significantly enhanced the formation of TOX, THMs, and HAAs in the presence of Cu(II). Based on the previously published information and our experimental results, the possible pathway for Cu(II)-catalyzed TOX, THM, and HAA formation from chlorination of carboxylic acids were tentatively proposed. Springer Science+Business Media Dordrecht, 2013 Cu(II) nationallicence Chlorination nationallicence Total organic halogen nationallicence Disinfection by-products nationallicence Microcalorimetry nationallicence Catalysis pathway nationallicence Liu Shao-gang College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut Zhu Zhi-liang State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, Tongji University, 200092, Shanghai, China aut Tan Xue-cai College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut Feng Xin-hui College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut Huang Zai-yin College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut Qiu Yan-ling State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, Tongji University, 200092, Shanghai, China aut Zhao Jian-fu State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, Tongji University, 200092, Shanghai, China aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-13 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1493-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1493-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Shao-gang College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut NATIONALLICENCE 700 1- Zhu Zhi-liang State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Tan Xue-cai College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut NATIONALLICENCE 700 1- Feng Xin-hui College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut NATIONALLICENCE 700 1- Huang Zai-yin College of Chemistry and Chemical Engineering of Guangxi University for Nationalities, Key Laboratory of Chemical and Biological Transforming Process, University of Guangxi, 536006, Nanning, China aut NATIONALLICENCE 700 1- Qiu Yan-ling State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Zhao Jian-fu State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-13 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer