2010•Unpublished venueRequires access
Effects of degree of red soil development on adsorption of Cu(II) and Cd(II).
Zhong Kai, Hang Li, Ren‐kou Xu, Anzhen Zhao, Jun Jiang
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Abstract
Three red soils derived from quaternary red clay were collected from Langxi of Anwei Province,Changsha of Hunan Province and Liuzhou of Guangxi,to investigate the effects of degree of soil development on adsorptions of Cu(II) and Cd(II),and the adsorption mechanism of heavy metal ion on red soil surface for provide the reference on contamination control and restoration of heavy metal.The results indicated that adsorption capacity of three red soils for both Cu(II) and Cd(II) decreased with increase in degree of soil development and decrease of cation exchangeable capacity,the declining order of these soils was as follows: the red soil from Langxi the red soil from Changsha the red soil from Liuzhou.It was found that the rate of Cu(II) adsorbed by three red soils was greater than that of Cd(II) under the same conditions.The adsorption rate of Cu(II) by the red soil from Liuzhou also decreased with the increase of ionic strength,which indicated that the adsorption of heavy metal on soil surface varied with the change of ionic strength.