黄孢展齿革菌菌丝球同时吸附铅镉离子的动力学

采用间歇法，利用黄孢展齿革菌菌丝球吸附溶液中的Pb^2 和Cd^2 ，研究Pb^2 和Cd^2 共存体系中吸附初速率随初始浓度的变化规律。实验结果表明，少量Cd^2 的存在促进其对Pb^2 的吸附，并提高吸附初速率，但随着Cd^2 初始浓度的增加，促进作用逐渐减弱并转为抑制作用；Cd^2 的吸附初速率随着Pb^2 初始浓度增大而减小；Pb^2 和Cd^2 的吸附初速率都随自身初始浓度的增加而增大。

THE KINETICS OF THE SIMULTANEOUS ADSORPTION OF Pb2+ AND Cd2+ FROM AQUEOUS SOLUTIONS BY PHANEROCHAETE CHRYSOSPORIUM IN THE FORM OF PELLET

In this paper, the kinetics of the simultaneous adsorption of Pb2+ and Cd2+ from aqueous solutions by phanerochaete chrysosporium in the form of pellet was reported. The effects of initial concentration on the initial adsorption rate were examined. The experimental results showed that Cd2+ of low initial concentration in Pb2+ solution could increase the adsorption initial rate of Pb2+, and promote the adsorption capacity of Pb2+by phanerochaete chrysosporium, but this positive effect decreased gradually and then turned to be negative with the increase of the initial concentration of Cd2+. The initial adsorption rate of Cd2+ decreased while the initial concentration of Pb2+ increased. The initial adsorption rate of Cd2+ and Pb2+ increased while their respective initial concentration increased.