海藻酸钙固定的ZVI-SRB吸附废水中铀的研究

Biosorption of uranium from wastewater by ZVI-SRB immobilized in calcium alginate

研究了用海藻酸钙固定的零价铁粉(ZVI)-硫酸盐还原菌(SRB)和SRB 2种颗粒从溶液中吸附铀的动力学特征。研究结果表明:2种固定化的颗粒对废液中的铀具有良好吸附性能,最大吸附量分别达到312.50和256.41 mg/g。2种固定化颗粒吸附铀的动力学过程可以用准二次动力学方程描述。

A ZVI-SRB was immobilized in calcium alginate gel beads, and the immobilized ZVI-SRB was used for removing uranium from wasterwater. The kinetics of uranium biosorption by the immo- bilized ZVI-SRB and the immobilized SRB was investigated. The results show that the immobilized ZVI-SRB and SRB were effective in removing uranium from wasterwater, and their maximal absorp- tion capacities were up to 312.50 and 256.41 mg/g respectively. The kinetics of uranium biosorption onto the immobilized ZVI-SRB and SRB followed pseudo-second order model.