Transport of nitrates through clay using electrokinetics

被引：21

作者：

Budhu, M

Rutherford, M

Sills, G

Rasmussen, W

机构：

[1] UNIV OXFORD,DEPT ENGN SCI,OXFORD OX1 3PJ,ENGLAND

[2] UNIV ARIZONA,DEPT AGR & BIOSYST ENGN,TUCSON,AZ 85721

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 1997年 / 123卷 / 12期

关键词：

D O I：

10.1061/(ASCE)0733-9372(1997)123:12(1251)

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this paper, the results of laboratory experiments to investigate the feasibility of using electrokinetics to transport nitrates (a nutrient) through a low-permeability soil are presented. Tests were conducted using a kaolinite soil consolidated from a slurry under a vertical stress of 127 kPa. Sodium nitrate was introduced in a chamber in front of a graphite electrode that becomes the cathode in the electrokinetic process. A hydraulic head was used to reduce the osmotic pressures. The results of the tests reveal that, under laboratory conditions, nitrates can be transported through low-permeability soils using electrokinetics.

引用

页码：1251 / 1253

页数：3