CMB改性大洋富钴结壳尾矿对重金属离子的选择性吸附  

Selective Adsorption of Heavy Metal Ions by CMB Modified Gangue of Oceanic Cobalt-rich Crust

作　　者：陈国荣[1] 

机构地区：[1]北京矿冶研究总院,北京100044

出　　处：《有色金属》2009年第2期125-128,共4页Nonferrous Metals

基　　金：中国大洋协会资助项目(DY105-04-01-11)

摘　　要：采用静态吸附法研究CMB改性前后大洋富钴结壳尾矿在相同条件下对模拟废水中Cu2+,Pb2+,Zn2+,Cd2+等重金属离子的单一和混合吸附特性。结果表明,CMB改性前后大洋富钴结壳尾矿从模拟废水中吸附单一重金属离子的顺序为Pb2+>Cd2+>Cu2+>Zn2+,当Pb2+,Cd2+,Cu2+和Zn2+离子同时存在时,吸附顺序仍是Pb2+>Cd2+>Cu2+>Zn2+,改性尾矿吸附效果好,成本低,制备工艺简单。Adsorption characteristics of heavy metallic ions in the form of single or group in waste water, such as Cu^2 ＋ , Pb^2 ＋ , Zn^2 ＋ , Cd^2＋ etc, by using the unmodified and modified railings discharged from the treatment of OCRC are studied with static adsorption at the same conditions. The results indicate that both for single ion and multi-ions, the adsorption order of the heavy metal ions in artificial waste water by use of the unmodified and is confirmed as Pb^2＋ 〉 Cd^2＋〉 Cu^2＋〉 Zn^2＋. The adsorption effect with modified gangue of oceanic cobalt-rich crust is better than that with unmodified gangue, and the operation cost is low, and the process is convenient.

关 键 词：环境工程 大洋富钴结壳尾矿 改性 重金属离子废水 吸附选择性 

分 类 号：TQ028.15[化学工程] TD857.3[矿业工程—金属矿开采]