Probing Coagulation Behavior of Individual Aluminum Species for Removing Corresponding Disinfection Byproduct Precursors: The Role of Specific Ultraviolet Absorbance
Zhao, He1,2; Hu, Chengzhi1; Zhang, Di2; Liu, Huijuan1; Qu, Jiuhui
2016-01-29
发表期刊PLOS ONE
ISSN1932-6203
卷号11期号:1页码:148020
摘要Coagulation behavior of aluminum chloride and polyaluminum chloride (PACl) for removing corresponding disinfection byproduct (DBP) precursors was discussed in this paper. CHCl3, bromine trihalomethanes (THM-Br), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) formation potential yields were correlated with specific ultraviolet absorbance (SUVA) values in different molecular weight (MW) fractions of humic substances (HS), respectively. Correlation analyses and principal component analysis were performed to examine the relationships between SUVA and different DBP precursors. To acquire more structural characters of DBP precursors and aluminum speciation, freeze-dried precipitates were analyzed by fourier transform infrared (FTIR) and C 1s, Al 2p X-ray photoelectron spectroscopy (XPS). The results indicated that TCAA precursors (no MW limits), DCAA and CHCl3 precursors in low MWfractions (MW<30 kDa) had a relatively good relations with SUVA values. These DBP precursors were coagulated more easily by in situ Al-13 of AlCl3 at pH 5.0. Due to relatively low aromatic content and more aliphatic structures, THM-Br precursors (no MW limits) and CHCl3 precursors in high MW fractions (MW>30 kDa) were preferentially removed by PACl coagulation with preformed Al-13 species at pH 5.0. Additionally, for DCAA precursors in high MWfractions (MW>30 kDa) with relatively low aromatic content and more carboxylic structures, the greatest removal occurred at pH 6.0 through PACl coagulation with aggregated Al-13 species.
文章类型Article
WOS标题词Science & Technology
DOI10.1371/journal.pone.0148020
收录类别SCI
语种英语
关键词[WOS]NATURAL ORGANIC-MATTER ; SIZE-EXCLUSION CHROMATOGRAPHY ; WATER-TREATMENT ; DRINKING-WATER ; POLYALUMINUM CHLORIDE ; ENHANCED COAGULATION ; HUMIC ACIDS ; CHLORINATION ; SPECIATION ; AL-13
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
项目资助者National Natural Science Foundation of China(51108441 ; 50921064)
WOS记录号WOS:000369528600090
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20608
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China
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Zhao, He,Hu, Chengzhi,Zhang, Di,et al. Probing Coagulation Behavior of Individual Aluminum Species for Removing Corresponding Disinfection Byproduct Precursors: The Role of Specific Ultraviolet Absorbance[J]. PLOS ONE,2016,11(1):148020.
APA Zhao, He,Hu, Chengzhi,Zhang, Di,Liu, Huijuan,&Qu, Jiuhui.(2016).Probing Coagulation Behavior of Individual Aluminum Species for Removing Corresponding Disinfection Byproduct Precursors: The Role of Specific Ultraviolet Absorbance.PLOS ONE,11(1),148020.
MLA Zhao, He,et al."Probing Coagulation Behavior of Individual Aluminum Species for Removing Corresponding Disinfection Byproduct Precursors: The Role of Specific Ultraviolet Absorbance".PLOS ONE 11.1(2016):148020.
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