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题名

Effects of operating conditions on disinfection by-product formation, calculated toxicity, and changes in organic matter structures during seawater chlorination

作者
通讯作者Wang,Chao; Shang,Chii
发表日期
2022-07-15
DOI
发表期刊
ISSN
0043-1354
EISSN
1879-2448
卷号220
摘要
This study systematically quantified the impacts of different operation conditions, e.g., pH, chlorine dosages, contact times, and temperatures towards the disinfection by-product (DBP) formation, integrated toxicity, and structural changes in seawater natural organic matter during seawater chlorination. Higher concentrations of total DBPs were found under longer contact times, higher chlorine dosages, higher temperatures, and lower pH. The concentration of tribromomethane, the most abundant DBP, was found lowest at pH 10. Monobromoacetic acid, dibromoacetonitrile, and dibromoacetaldehyde were the three main contributors to integrated cyto- and geno-toxicity, stressing the need to monitor DBPs based on their contributions to integrated toxicity, regardless they are regulated or nonregulated. The concentrations of total organic chlorine remained stable under different conditions, while those of total organic bromine increased with increasing contact times, chlorine dosages, and temperatures, but with decreasing pH, indicating the changes of toxicity in chlorinated seawater compared to drinking water or groundwater. Changes of ultraviolet absorbance at 254 nm and fluorescence excitation emission matrix values are useful indicators for monitoring the concentrations of high molecular weight adsorbable organic bromine and total organic halogen under all operating conditions.
关键词
相关链接[Scopus记录]
收录类别
SCI ; EI
语种
英语
重要成果
NI论文
学校署名
通讯
资助项目
Natural Science Foundation of Guangdong Province[2021A1515010415];
WOS研究方向
Engineering ; Environmental Sciences & Ecology ; Water Resources
WOS类目
Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS记录号
WOS:000807343300010
出版者
EI入藏号
20222212186606
EI主题词
Biogeochemistry ; Bromine ; Chemicals removal (water treatment) ; Chlorine ; Disinfection ; Groundwater ; Organic compounds ; Potable water ; Seawater ; Toxicity
EI分类号
Water Resources:444 ; Groundwater:444.2 ; Industrial Wastes:452.3 ; Health Care:461.7 ; Seawater, Tides and Waves:471.4 ; Geochemistry:481.2 ; Biochemistry:801.2 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2
ESI学科分类
ENVIRONMENT/ECOLOGY
Scopus记录号
2-s2.0-85131093817
来源库
Scopus
引用统计
被引频次[WOS]:5
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/336231
专题工学院_环境科学与工程学院
作者单位
1.Department of Civil and Environmental Engineering,the Hong Kong University of Science and Technology,Kowloon,Clear Water Bay,Hong Kong
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution,the Hong Kong University of Science and Technology,Kowloon,Clear Water Bay,Hong Kong
通讯作者单位环境科学与工程学院
推荐引用方式
GB/T 7714
Liu,Jiajian,Ling,Li,Hu,Qing,et al. Effects of operating conditions on disinfection by-product formation, calculated toxicity, and changes in organic matter structures during seawater chlorination[J]. WATER RESEARCH,2022,220.
APA
Liu,Jiajian,Ling,Li,Hu,Qing,Wang,Chao,&Shang,Chii.(2022).Effects of operating conditions on disinfection by-product formation, calculated toxicity, and changes in organic matter structures during seawater chlorination.WATER RESEARCH,220.
MLA
Liu,Jiajian,et al."Effects of operating conditions on disinfection by-product formation, calculated toxicity, and changes in organic matter structures during seawater chlorination".WATER RESEARCH 220(2022).
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