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题名:
ENHANCING PHOSPHATE REMOVAL BY COAGULATION USING POLYELECTROLYTES AND RED MUD
作者: Chen, Jing1,3; Luan, Zhaokun2
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
ISSN号: 1018-4619
出版日期: 2010
卷号: 19, 期号:10, 页码:2200-2204
关键词: phosphate ; coagulation ; polyaluminium chloride (PAC) ; red mud ; polydiallyldimethylammonium chloride (PDADMAC)
学科分类: Environmental Sciences
产权排序: [Chen, Jing] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Luan, Zhaokun] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China; [Chen, Jing] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
通讯作者: Chen, J, Chinese Acad Sci, Yantai Inst Coastal Zone Res, 17 Chunhui Rd, Yantai 264003, Peoples R China
作者部门: 污染过程与控制实验室 
中文摘要: Phosphate removal by chemical precipitation remains the leading technology today. In this research, phosphate removal using polyaluminium chloride (PAC) alone and in the presence of polydiallyldimethylammonium chloride (PDADMAC) and red mud were investigated. The results showed that PAC was effective in phosphate removal by coagulation via charge neutralization and adsorption of polymeric hydroxyl complexes. For synthetic wastewater, the phosphate removal efficiency reached 94.6% and for raw wastewater, the total phosphorus removal efficiency was as high as 96.6%. PDADMAC was not efficient in removing phosphate when used alone, at dosages of 0.1-0.3 mg/L, and it had little effect on enhancing phosphate removal by PAC as a coagulation aid, even when the dosage of PDADMAC was increased from 0.1 mg/L to 2 mg/L. Red mud, a by-product of bauxite processing in the alumina manufacturing industry, served as "nuclei for coagulation" resulting in large, rapid-settling flocs. When 40 mg/L red mud was added, the phosphate removal efficiency of 3.18, 4.76 and 6.35 mg Al3+/L PAC increased by 15.1, 20.5 and 13.0%, respectively. Adsorption and desorption experiments of phosphate on flocs after coagulation showed that the addition of red mud not only decreased the required PAC dosage but also enforced the phosphate adsorption on flocs.
英文摘要: Phosphate removal by chemical precipitation remains the leading technology today. In this research, phosphate removal using polyaluminium chloride (PAC) alone and in the presence of polydiallyldimethylammonium chloride (PDADMAC) and red mud were investigated. The results showed that PAC was effective in phosphate removal by coagulation via charge neutralization and adsorption of polymeric hydroxyl complexes. For synthetic wastewater, the phosphate removal efficiency reached 94.6% and for raw wastewater, the total phosphorus removal efficiency was as high as 96.6%. PDADMAC was not efficient in removing phosphate when used alone, at dosages of 0.1-0.3 mg/L, and it had little effect on enhancing phosphate removal by PAC as a coagulation aid, even when the dosage of PDADMAC was increased from 0.1 mg/L to 2 mg/L. Red mud, a by-product of bauxite processing in the alumina manufacturing industry, served as "nuclei for coagulation" resulting in large, rapid-settling flocs. When 40 mg/L red mud was added, the phosphate removal efficiency of 3.18, 4.76 and 6.35 mg Al(3+)/L PAC increased by 15.1, 20.5 and 13.0%, respectively. Adsorption and desorption experiments of phosphate on flocs after coagulation showed that the addition of red mud not only decreased the required PAC dosage but also enforced the phosphate adsorption on flocs.
研究领域[WOS]: Environmental Sciences & Ecology
关键词[WOS]: WASTE-WATER TREATMENT ; AQUEOUS-SOLUTION ; FLY-ASH ; PHOSPHORUS ; ADSORPTION ; CHLORIDE
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000284394200010
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/3786
Appears in Collections:污染过程与控制实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Chen, Jing,Luan, Zhaokun. ENHANCING PHOSPHATE REMOVAL BY COAGULATION USING POLYELECTROLYTES AND RED MUD[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2010,19(10):2200-2204.
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