A study on sorption properties of Cd2+ on Ariake clay for evaluating its potential use as a landfill barrier material

被引：65

作者：

Du, YJ ^{[1
]}

Hayashi, S

机构：

[1] SE Univ, Inst Geotech Engn, Nanjing 210096, Peoples R China

[2] Saga Univ, Inst Lowland, Saga 5408502, Japan

来源：

APPLIED CLAY SCIENCE | 2006年 / 32卷 / 1-2期

关键词：

Ariake clay; barrier; landfill; heavy metal; impact; sorption; partition coefficient;

D O I：

10.1016/j.clay.2006.01.003

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：

To assess the potential use of Ariake clay from Kyushu region of Japan as a landfill barrier material, the results of a series of batch tests are presented to investigate on the effects of solid-solution contact time, solid: solution ratio and pH of solution on sorption of Cd2+ and Pb2+ on the Ariake clay. The results show that in addition to the three investigated factors, solid: solution ratio seems to be the crucial controlling factor. The Freundlich sorption parameters determined from the batch tests are applied to a typical landfill site in which the Ariake clay is used as a soil barrier. The impacts of the landfill on the underlying aquifer are assessed through numerical analysis. Based on the analysis results, the significance of selecting proper solid: solution ratio for determining sorption parameters from batch tests is discussed. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：14 / 24

页数：11

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