Copper(II) humate mobility in kaolinite soil

被引：15
|
作者：
Wu, J
West, LJ
Stewart, DI [1 ]
机构：
[1] Univ Leeds, Sch Civil Engn, Leeds LS2 9JT, W Yorkshire, England
[2] Univ Leeds, Leeds Environm Ctr, Leeds LS2 9JT, W Yorkshire, England
[3] Univ Leeds, Sch Earth Sci, Leeds LS2 9JT, W Yorkshire, England
来源：
ENGINEERING GEOLOGY | 2001年 / 60卷 / 1-4期
关键词：
contaminated soil; copper; kaolinite; humate; adsorption; electrokinesis;
D O I：
10.1016/S0013-7952(00)00108-3
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
An investigation of the influence of humate on the mobility of copper(II) ions in a kaolinite soil using leaching tests and electrokinetic experiments is reported. The data are interpreted in terms of humate-copper-clay interactions and humate electrical charge. Humate is mostly immobile below pH8 but is more mobile in alkaline conditions (sorption to kaolinite reduces its mobility in neutral conditions). Copper humate complexes are mobile in both acidic and alkaline conditions, but not in neutral conditions where they are sorbed. The dissolved copper humate complexes that form in acidic conditions are positively charged. The net effect of humate is to increase cupric ion mobility in kaolinite soil, especially in alkaline conditions. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：275 / 284
页数：10
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