The role of polyaluminum chloride in kaolinite aggregation in the sequent coagulation and flocculation process

被引：30

作者：

Liang, Long ^{[1
]}

Tan, Jiakun ^{[1
]}

Peng, Yaoli ^{[1
,2
]}

Xia, Wencheng ^{[1
,2
]}

Xie, Guangyuan ^{[1
,2
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou 221116, Peoples R China

[2] China Univ Min & Technol, Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou 221116, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2016年 / 468卷

基金：

中国国家自然科学基金;

关键词：

Coagulant; Aggregation; Kaolinite; Polyaluminum chloride; Polyethylene oxide; WASTE-WATER; DEWATERING BEHAVIOR; FLOC PROPERTIES; REMOVAL; SUSPENSIONS; COAGULATION/FLOCCULATION; ADSORPTION; ELECTROCOAGULATION; POLYACRYLAMIDE; OPTIMIZATION;

D O I：

10.1016/j.jcis.2016.01.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The role of polyaluminum chloride (PAC) in kaolinite aggregation is studied in this paper by the aggregation of kaolinite with the single and combined use of PAC and polyethylene oxide (PEO). The sequent coagulation and flocculation pattern with the combined use of PAC and PEO shows higher aggregation efficiency than that with the single use of PAC or PEO. In the sequent coagulation and flocculation pattern, the settling velocity and the Zeta potential of kaolinite steadily increase with the PAC concentration, which indicates that the role of PAC is to render the interaction between kaolinite and PEO rather than charge neutralization. This conclusion is supported by the X-ray photoelectron spectroscopy analysis, which shows steady increase of Al-OH group on kaolinite with the PAC concentration. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：57 / 61

页数：5

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