The size and coagulation behavior of a novel composite inorganic-organic coagulant

被引：63
|
作者：
Gao, Bao-Yu [1 ]
Wang, Yan [1 ]
Yue, Qin-Yan [1 ]
Wei, Jin-Cheng [1 ]
Li, Qjan [1 ]
机构：
[1] Shandong Univ, Sch Environm Sci & Engn, Jinan 250100, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2008年 / 62卷 / 03期
关键词：
polyferric chloride; polydimethyldiallylammonium chloride; Fe(III) speciation; zeta potential; floc aggregation;
D O I：
10.1016/j.seppur.2008.02.023
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study, a novel composite inorganic-organic coagulant was prepared by polyferric chloride (PFC) and polydimethyldiallylammonium chloride (PDMDAAC). The variations of size and specific surface area with respect to pH for composite polyferric chloride-polydimethyldiallylammonium chloride (PFC-PDMDAAC) were investigated, and the coagulation efficiency of PFC-PDMDAAC was studied by jar-test, and Photometric Dispersion Analyzer 2000 (PDA 2000) was used to investigate floc aggregation process of PFC-PDMDAAC. The results show that the average size and specific surface area of PFC-PDMDAAC are larger than that of PFC. The coagulation efficiency of PFC-PDMDAAC is higher than that of PFC and PDMDAAC. The floc aggregation process shows that kaolin particles may be aggregated to micro-flocs by Fe(III) species in PFC-PDMDAAC at first, and then the micro-flocs are bridged together to form large flocs by organic coagulants in PFC-PDMDAAC. The soluble dye is aggregated initially to insoluble dye micro-compound by the reaction of PDMDAAC, and then the insoluble dye micro-compound is aggregated to large flocs by Fe(III) polymers in PFC-PDMDAAC. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：544 / 550
页数：7
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