Formation of THMs and HANs during bromination of Microcystis aeruginosa

doi:10.1016/S1001-0742(12)60235-6

QIBEBT-IR > 热化学转化研究组

	Formation of THMs and HANs during bromination of Microcystis aeruginosa
	Pu, Yunzhu 1; Kong, Lingzhao 2; Huang, Xin 1; Ding, Guoji 1; Gao, Naiyun 3
	2013-09-01
发表期刊	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
卷号	25 期号:9 页码:1795-1799
摘要	Bromine-contained disinfectants and biocides are widely used in swimming pools, recreational waters and cooling towers. The objective of this study was to evaluate the formation of thrihalomethanes (THMs) and haloacetonitriles (HANs) and their cytotoxicity in algae solutions during free bromine disinfection. Disinfection by-products formation potential experiments were conducted using model solutions containing 7 mg/L (as total organic carbon) Microcystis aeruginosa cells. Effects of free bromine dosage, pH and ammonia were investigated. The results showed that brominated disinfection by-products were the major products when free bromine was applied. The total THMs formed during bromination was much as that formed during chlorination, whereas HANs were elevated by using bromination instead of chlorination. Dibromoacetonitrice (C2H2NBr2) and bromoforrn (CHBr3) were the only detected species during free bromine disinfection. The production of C2H2NBr2 and CHBr3 increased with disinfectant dosage but decreased with dosing ammonia. CHBr3 increased with the pH changing from 5 to 9. However, C2H2NBr2 achieved the highest production at neutral pH, which was due to a joint effect of variation in hydrolysis rate and free bromine reactivity. The hydrolysis of C2H2NBr2 was base-catalytic and nearly unaffected by disinfectant. Finally, estimation of cytotoxicity of the disinfected algae solutions showed that HANs formation was responsible for the majority of toxicity. Considering its highest toxicity among the measured disinfection by-products, the elevated C2H2NBr2 should be considered when using bromine-related algaecide.
文章类型	Article
关键词	Bromine Microcystis Aeruginosa Disinfection By-products
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1016/S1001-0742(12)60235-6
关键词[WOS]	DISINFECTION BY-PRODUCTS ; SWIMMING POOL WATER ; MAMMALIAN-CELL CYTOTOXICITY ; ALGAL ORGANIC-MATTER ; CHLORINATION ; BROMIDE ; DIMETHYLHYDANTOIN ; TRIHALOMETHANES ; KINETICS ; SYSTEM
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000326993900009
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/6018
专题	热化学转化研究组
作者单位	1.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 3.Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200091, Peoples R China
推荐引用方式 GB/T 7714	Pu, Yunzhu,Kong, Lingzhao,Huang, Xin,et al. Formation of THMs and HANs during bromination of Microcystis aeruginosa[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2013,25(9):1795-1799.
APA	Pu, Yunzhu,Kong, Lingzhao,Huang, Xin,Ding, Guoji,&Gao, Naiyun.(2013).Formation of THMs and HANs during bromination of Microcystis aeruginosa.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,25(9),1795-1799.
MLA	Pu, Yunzhu,et al."Formation of THMs and HANs during bromination of Microcystis aeruginosa".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 25.9(2013):1795-1799.