A study of dual polymer flocculation

被引：120

作者：

Fan, AX ^{[1
]}

Turro, NJ ^{[1
]}

Somasundaran, P ^{[1
]}

机构：

[1] Columbia Univ, Langmuir Ctr Colloids & Interfaces, New York, NY 10025 USA

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2000年 / 162卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

polymer floculation; alumina fines; polyacrylic acid;

D O I：

10.1016/S0927-7757(99)00252-6

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：

Flocculation of alumina fines with combinations of the anionic form of a polyacrylic acid (PAA) and a high molecular weight cationic copolymer of acrylamide and quaternary acrylate salt (Percol) was investigated. Effects of PAA and Percol molecular weights as well as Percol charge density on the rate of flocculation were also investigated. In order to determine the role of the polymer conformation and changes in it due to the presence of another polymer, the fluorescence label method was employed to monitor PAA conformation at the alumina water interface under different polymer addition modes, such as the sequential addition of the two polymers vs. co-addition. Importantly, polymer size distribution was found to have a marked effect depending on the polymer type: in the case of PAA, a broader distribution yielded better flocculation; no such effect was observed with Percol. Based on the results, an overall mechanistic picture of dual polymer flocculation is proposed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：141 / 148

页数：8

共 14 条

[1]

BRITT KW, 1977, TAPPI, V60, P102

[2]

EKLUND D, 1991, PAPER CHEM DT PAPER

[3] POLYMER ADSORPTION AND FLOCCULATION IN SHEARED SUSPENSIONS [J].

GREGORY, J .

COLLOIDS AND SURFACES, 1988, 31 :231-253

[4]

LEE SY, 1991, WATER SUPPLY, V9, P11

[5]

MOORE EE, 1976, TAPPI, V59, P120

[6] KINETIC ASPECTS OF POLYMER BRIDGING - EQUILIBRIUM FLOCCULATION AND NONEQUILIBRIUM FLOCCULATION [J].

PELSSERS, EGM ;

STUART, MAC ;

FLEER, GJ .

COLLOIDS AND SURFACES, 1989, 38 (1-3) :15-25

[7] The use of oppositely charged polyelectrolytes as flocculants and retention aids [J].

Petzold, G ;

Buchhammer, HM ;

Lunkwitz, K .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1996, 119 (01) :87-92

[8] THE INTERACTION BETWEEN POLYELECTROLYTE COMPLEXES MADE FROM POLY(DIMETHYLDIALLYLAMMONIUM CHLORIDE) (PDMDAAC) AND POLY(MALEIC ACID-CO-ALPHA-METHYLSTYRENE) (P(MS-ALPHA-MESTY)) AND CELLULOSIC MATERIALS [J].

PETZOLD, G ;

LUNKWITZ, K .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1995, 98 (03) :225-233

[9]

Smellie R. H., 1958, J COLL SCI IMP U TOK, V13, P589, DOI [10.1016/0095-8522(58)90071-0, DOI 10.1016/0095-8522(58)90071-0]

[10]

SOMASUNDARAN P, 1988, MINER METALL PROC, V5, P68

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