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《Journal of Anhui Agricultural Sciences》 2008-29
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Study on Adsorption of Cu2+ in Fine Sand with Saturated Water

LI Duo et al(Shijiazhuang Economic College,Shijiazhuang,Hebei 050031)  
[Objective] The aim was to understand the adsorption characteristic of Cu2+ in fine sand with saturated water and forecast the trend on development and evolution of Cu2+ in the ground water.[Method] In the laboratory soil column experiment,the appearance time of 50% effective concn.of non-adsorption component(Cl-) and adsorption component(Cu2+) in seepage were observed,the partition coefficient and lag coefficient were calculated and the adsorption characteristic of Cu2+ in the fine sand with saturated water was studied.[Result] The Absorption and exchange capacity of cation in the fine sand was about 8.7 meq/100 g.If the adsorbed substance was Cu2+ entirely,about 0.126 g Cu2+ could be Absorbed in every 100 g fine sands,which showed that fine sand with saturated water had stronger Absorption capability to Cu2+.The partition coefficient of the fine sand soil was 52.0,lag coefficient was 138.1,being much higher than 1.0,which showed that the influence of Absorption on the Cu2+ migration was larger and its diffusion coefficient and solute migration velocity were all decreased by 138.1 times compared with that of the non-adsorption substance,thereby delayed the migration velocity of Cu2+ in the ground water.[Conclusion] The influence of Absorption on the Cu2+ migration in the fine sand with saturated water was larger.
【CateGory Index】: X703
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