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学科主题: Engineering ; Environmental; Environmental Sciences; Water Resources
题名: Hydrolysis and coagulation behavior of polyferric sulfate and ferric sulfate
作者: Liang, Zhen1, 2, 3; Wang, Yanxin1, 2; Zhou, Yu1, 2; Liu, Hui1, 2; Wu, Zhenbin1, 2
通讯作者: Wang, YX, China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China
关键词: coagulation ; ferric sulfate ; hydrolysis ; molasses wastewater ; polyferric sulfate
刊名: WATER SCIENCE AND TECHNOLOGY
发表日期: 2009
DOI: 10.2166/wst.2009.096
卷: 59, 期:6, 页:1129-1135
收录类别: SCI
文章类型: Article
部门归属: [Liang, Zhen; Wang, Yanxin; Zhou, Yu; Liu, Hui; Wu, Zhenbin] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China; [Liang, Zhen; Wang, Yanxin; Zhou, Yu; Liu, Hui; Wu, Zhenbin] China Univ Geosci, MOE Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China; [Liang, Zhen] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者: National Natural Science Foundation of China [40830748]; China Postdoctoral Science Foundation [20080440976]; Ministry of Environmental Protection of China
类目[WOS]: Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology ; Water Resources
摘要: The hydrolysis behaviors of polyferric sulfate (PFS) and ferric sulfate (FS) under conditions similar to raw wastewater were investigated and the coagulation of biologically pretreated molasses wastewater using PFS and FS was evaluated by studying coagulation efficiency, zeta potential and microscopic surface morphology of flocs. Experimental results show that the hydrolysis behavior of PFS is different from that of FS on the basis of ferron assay. In the case of FS, fast-reacting Fe(III) polymers were the dominant polynuclear species while large fraction of slow-reacting iron polymers is present in PFS. Despite slightly fewer dosages of PFS required as compared to FS, there is no marked difference in the coagulation of molasses effluent between PFS and FS, especially at the optimum dosages. Both coagulants destabilize organic compounds predominantly through charge neutralization-precipitation mechanism. Hydrolysis rate of PFS in synthetic solution is appreciably different from that in raw wastewater. This may due to the effect of sulfate anion introduced as counter-ion as well as depolymerization of larger polymeric Fe(III) species by the organic ligands present in molasses effluent.
英文摘要: The hydrolysis behaviors of polyferric sulfate (PFS) and ferric sulfate (FS) under conditions similar to raw wastewater were investigated and the coagulation of biologically pretreated molasses wastewater using PFS and FS was evaluated by studying coagulation efficiency, zeta potential and microscopic surface morphology of flocs. Experimental results show that the hydrolysis behavior of PFS is different from that of FS on the basis of ferron assay. In the case of FS, fast-reacting Fe(III) polymers were the dominant polynuclear species while large fraction of slow-reacting iron polymers is present in PFS. Despite slightly fewer dosages of PFS required as compared to FS, there is no marked difference in the coagulation of molasses effluent between PFS and FS, especially at the optimum dosages. Both coagulants destabilize organic compounds predominantly through charge neutralization-precipitation mechanism. Hydrolysis rate of PFS in synthetic solution is appreciably different from that in raw wastewater. This may due to the effect of sulfate anion introduced as counter-ion as well as depolymerization of larger polymeric Fe(III) species by the organic ligands present in molasses effluent.
关键词[WOS]: POLYCATION ; MECHANISMS ; CHEMISTRY ; IRON
语种: 英语
WOS记录号: WOS:000265169200010
ISSN号: 0273-1223
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7778
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China
2.China Univ Geosci, MOE Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China

Recommended Citation:
Liang, Zhen; Wang, Yanxin; Zhou, Yu; Liu, Hui; Wu, Zhenbin.Hydrolysis and coagulation behavior of polyferric sulfate and ferric sulfate,WATER SCIENCE AND TECHNOLOGY,2009,59(6):1129-1135
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