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采用间歇法发现土娄土及不同处理土样对铜离子的吸附过程遵循二级反应动力学方程 ,吸附速率常数ka 呈 :土娄土 >去OM土娄土 >去Ca土娄土 >去Ca、OM土娄土 ;解吸过程符合两点位一级动力学方程 ,第一点位解吸速率常数kd1大于第二点位解吸速率常数kd2 ;各土样解吸速率常数的大小顺序与ka相反 ;吸附 解吸之间的滞后效应用ka/kd来衡量 ,滞后程度大小与ka大小顺序一致
The intermittent method was used to find that the adsorption of copper ions by soil and soil samples followed the second-order reaction kinetics equation. The adsorption rate constant ka was: soil for loam> soil for OM> soil for soil> Ca , OM soil; the desorption process accords with the two-level first order kinetic equation, the first point desorption rate constant kd1 is greater than the second point desorption rate constant kd2; the desorption rate constant of each soil sample is in the order of ka; The hysteresis effect between desorptions is measured in ka / kd, and the magnitude of hysteresis is in the same order of ka