BIOSORPTION OF COBALT WITH THE AMT METAL REMOVING AGENT

被引：23

作者：

AWADALLA, FT ^{[1
]}

PESIC, B ^{[1
]}

机构：

[1] UNIV IDAHO,DEPT MET ENGN,MOSCOW,ID 83843

来源：

HYDROMETALLURGY | 1992年 / 28卷 / 01期

关键词：

D O I：

10.1016/0304-386X(92)90065-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The biosorption of cobalt from aqueous solutions was studied by using the novel metal removing agent (MRA) produced by Advanced Minerals Technologies. The parameters studied were the loading capacity of MRA as affected by the initial pH, cobalt concentration and the presence of certain cations and anions. The effect of temperature was also examined. With the particular batch of the MRA, it was found that the loading capacity for cobalt was about 35 mg/g. The cobalt uptake was a function of pH, and it was lower at lower pH values. Sorption kinetics showed that the sequestering of cobalt by this material was quite fast under ambient conditions. Desorption of cobalt from loaded MRA could be performed by dilute acids e.g. 0.1 N HCl in a very short period of time. The desorbed MRA could be recycled only after regeneration with alkali, for example, 0.5 N NaOH. A detailed mechanism of cobalt biosorption is also proposed.

引用

页码：65 / 80

页数：16