Application of the Schulze-Hardy rule to haematite and haematite/humate colloid stability

被引：40

作者：

Verrall, KE

Warwick, P ^{[1
]}

Fairhurst, AJ

机构：

[1] Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England

[2] British Nucl Fuels Plc, Res & Technol, Preston PR4 0XJ, Lancs, England

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1999年 / 150卷 / 1-3期

关键词：

Schulze-Hardy; haematite; colloids; humate; critical coagulation constants;

D O I：

10.1016/S0927-7757(98)00858-9

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 applicability of the Schulze-Hardy rule to haematite and haematite/humate mixtures has been investigated by measuring the rate of fast and slow coagulation after the addition of increasing concentrations of mono, di and trivalent ions. Haematite colloids follow the rule for mono, di and trivalent ions. Haematite colloids coated with humate generally follow the rule for mono and di valent ions with the exception of copper ions. Trivalent ions do not follow the Schulze-Hardy rule because of their relatively strong complexation with humate. The size of the counter ion has an effect on the de-stabilising ability of ions of the same charge. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：261 / 273

页数：13

共 39 条

[11] ADSORPTION AND DESORPTION OF DIFFERENT ORGANIC-MATTER FRACTIONS ON IRON-OXIDE [J].