DOI: 10.1016/j.watres.2018.05.051
Scopus记录号: 2-s2.0-85049326829
论文题名: Formation of regulated and unregulated disinfection byproducts during chlorination of algal organic matter extracted from freshwater and marine algae
作者: Liu C. ; Ersan M.S. ; Plewa M.J. ; Amy G. ; Karanfil T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 142 起始页码: 313
结束页码: 324
语种: 英语
英文关键词: Algal organic matter
; Bromide
; Bromine substitution
; Disinfection byproducts
; Iodide
; Total organic halogen
Scopus关键词: Algae
; Biogeochemistry
; Biological materials
; Bromine
; Chlorination
; Chlorine
; Cytotoxicity
; Disinfection
; Fighter aircraft
; Iodine compounds
; Organic compounds
; Water
; Algal organic matters
; Bromide
; Disinfection by-product
; Iodide
; Total organic halogens
; Byproducts
; acetaldehyde
; acetic acid
; bromide
; bromine
; chlorine
; halogen
; iodide
; organic matter
; trihalomethane
; absorbance
; acetic acid
; aldehyde
; algal bloom
; bromide
; byproduct
; chlorination
; chlorine
; concentration (composition)
; disinfection
; dissolved organic matter
; ethane
; green alga
; halogen
; organic compound
; seasonality
; Alexandrium
; Alexandrium tamarense
; Article
; chlorination
; concentration (parameters)
; controlled study
; decomposition
; disinfection
; freshwater alga
; marine alga
; Microcystis aeruginosa
; nonhuman
; pH
; priority journal
; reaction time
; Synechococcus
; Alexandrium tamarense
; algae
; Microcystis aeruginosa
; Synechococcus
英文摘要: Seasonal algal blooms in freshwater and marine water can increase the input of algal organic matter (AOM) to the pool of dissolved organic matter. The impact of bromide (Br−) and iodide (I−) on the formation of regulated and unregulated disinfection byproducts (DBPs) was studied from chlorination of AOM solutions extracted from three species of cultured isolates of freshwater and marine algae (Microcystis aeruginosa (MA), Synechococcus (SYN), and Alexandrium tamarense (AT)). Comparable concentrations of DBPs were formed from three types of AOM. In the absence of Br−, trihalomethanes (THMs), haloacetic acids (HAAs), and haloacetaldehydes (HALs) were the main groups of DBP formed, and haloacetonitriles (HANs) were formed at lower concentrations. In contrast, the formation of iodinated THMs was <8 nM (1.7 μg/L) since most of initial I− was oxidized to iodate. Increasing initial Br− concentrations increased the formation of THMs and HANs, while concentrations of total organic halogen and HAA remained stable. On the contrary, total HAL concentrations decreased due to the instability of bromated HALs. Decreasing the specific UV absorbance (SUVA) value of AOM favours bromine substitution since bromine more preferentially reacts with low reactivity organic matter than chlorine. Increasing the pH enhanced the formation of THMs but decreased the formation of HANs. Concentrations of HANs and HALs decreased at high pH (e.g., 9.0), high initial chlorine concentration and long reaction time due to the decomposition. Based on the cytotoxicity calculations, unregulated HANs and HALs were the main contributors for the total toxicity of DBPs measured, even though based on the weight regulated THMs and HAAs predominated. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112618
Appears in Collections: 气候减缓与适应
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作者单位: Department of Environmental Engineering and Earth Sciences, Clemson University, Anderson, SC 29625, United States; Department of Crop Sciences, and the Safe Global Water Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
Recommended Citation:
Liu C.,Ersan M.S.,Plewa M.J.,et al. Formation of regulated and unregulated disinfection byproducts during chlorination of algal organic matter extracted from freshwater and marine algae[J]. Water Research,2018-01-01,142