岩石对Zn^(2+)、Pb^(2+)的竞争吸附特征  

Characteristics of Competitive Adsorption of Pb^(2+) and Zn^2 in Rock

作　　者：徐龙君 牟传龙[2] 鲜学福[1] 刘成伦[3] 丛小林[3] 

机构地区：[1]重庆大学资源及环境科学学院,重庆400044 [2]国土资源部成都地质矿产研究所,成都610082 [3]重庆大学应用化学系,重庆400044

出　　处：《重庆大学学报（自然科学版）》2001年第3期38-40,共3页Journal of Chongqing University

基　　金：国家攀登计划预研项目! (95 预 39;3 2 ;2 )

摘　　要：采用紫外—可见分光光度法以及原子吸收分光光度法 ,对岩石静态吸附Pb2 +、Zn2 +的特征进行了研究。结果表明 ,砂岩从含Zn2 +的溶液中吸附Zn2 +、从Pb2 +和Zn2 +混合溶液中吸附Pb2 +和Zn2 +以及角砾岩从Pb2 +和Zn2 +混合溶液中吸附Pb2 +的过程均是类分形的 ;角砾岩和砂岩对铅的吸附速率大于锌 ,在铅存在的情况下锌的吸附能力减弱 ;角砾岩和砂岩对铅离子的吸附量相差不大 ,但角砾岩对锌离子的吸附能力强于砂岩。Under static state condition, the characteristics of adsorption of Pb 2+ and Zn 2 in Rock have been studied using the ultraviolet-visible spectrophotometers method and the atom adsorption spectrophotometers method. The results show that the process,in which the sandstone adsorbs Zn 2+ from solution-containing Zn 2+ , the sandstone adsorb Zn 2+ and Pb 2+ from Pb 2+ +Zn 2+ solution and breccia adsorbs Zn 2+ from Pb 2+ +Zn 2+ solution , is fractal-like. The rate of adsorption of Pb 2+ is more than that of Zn 2+ in breccia. The adsorption ability of Zn 2+ in rock is decreased because there is Pb 2+ in solution. The adsorption capacity of Pb 2+ is close to that of sandstone and breccia,and the adsorption ability of Zn 2+ in breccia is better than that in sandstone.

关 键 词：岩石 类分形 铅离子 锌离子 吸附特征 废水处理 

分 类 号：X703.5[环境科学与工程—环境工程] X505