【摘要】 玉米秸秆是一种重要的有机物料,它能通过表观吸附过程(包括物理吸附和化学反应过程)降低Cr(VI)污染。本试验采用间歇振荡法,初步研究了玉米秸秆对Cr(VI)的表观吸附动力学和等温线,并用吸附方程进行拟合。结果表明:玉米秸秆对Cr(VI)的表观吸附动力学以一级动力学方程为最优方程;表观吸附等温线可用Freundlich、Langmuir和Temkin方程描述,而以Freundlich方程的拟合效果最好;土壤或水体中的Cr(VI)含量越高,玉米秸秆的修复效果越差。更多还原

【Abstract】 The Cr (VI) apparent adsorption quantity of corn stalk was preliminary studied by batch technique. The results showed that the first-order kinetic equation and Freundlich equation were the most satisfied to describe Cr (VI) adsorption processes of corn stalk. The more the amount of Cr (VI), the worse the restore effects of corn stalk in terrestrial and aquatic environments.更多还原