摘要
采用海藻酸钠-钙凝胶球、海藻酸钠-钙-铁(Ⅲ)凝胶球、海藻酸钠-铁(Ⅲ)凝胶球对水体中单宁酸和没食子酸进行吸附实验研究。结果表明,对50mL(50mg/L)的模拟污水进行吸附,海藻酸钠-铁凝胶球和海藻酸钠-钙-铁(Ⅲ)凝胶球的吸附效果优于海藻酸钠-钙凝胶球,吸附120min后,使用Fe(Ⅲ)凝胶球对单宁酸的去除率可达97%,对没食子酸的去除率可达99%,对两种物质的吸附量分别为8.0、8.3mg/g,使用海藻酸钠-钙-铁(Ⅲ)凝胶球对单宁酸、没食子酸的去除率可达84%和97%,对两种物质的吸附量分别为7.0、8.0 mg/g。饱和吸附后海藻酸钠-钙-铁(Ⅲ)凝胶球可以再生利用,对单宁酸的去除效果随着降解再生次数的增加而降低。
The test results of adopting Tannic acid and Gallic acid in water by new type High Polymer （iron （ Ⅲ ） -alginate,calcium-alginate,calcium- iron （Ⅲ）-alginate gel beads） indicated that the iron （Ⅲ）-alglnate and calcium-iron （Ⅲ ） alginate gel heads had very strong adsorption for Tannic acid and Gallic acid. When the initial concentration of Tannic acid and Gallic acid were 50 mL（50mg·L^-1 ）, the removal rate reached above 97% and 99%, the adsorption amount was 8. 0 and 8. 3mg · g^-1 by AG-Fe（ Ⅲ ） gel beads during 120 rain adsorption; the removal rate reached above84% and 97%, the adsorption amount was 7. 0 and 8. 0 mg · g^-1 by AG-Ca-Fe（ Ⅲ ） gel beads on the same condition. AG-Ca-Fe（ Ⅲ ） gel beads which saturated adsorption can be utilized after regeneration. To the tannic acid the elimination effect reduces along with the degeneration regeneration times increased.
出处
《环境保护科学》
CAS
2007年第6期41-43,共3页
Environmental Protection Science
