作　　者： ; ; ; ; ; ; ;

机构地区： 广东工业大学环境科学与工程学院

出　　处： 《环境工程》 2014年第S1期31-33,94,共4页

摘　　要： 以花生壳和核桃壳为原料,制备了两种吸附剂。从动力学和热力学角度探讨了对活性艳蓝KN-R的吸附机理,并与活性炭进行对比。结果表明,两种吸附剂对KN-R的吸附动力学行为均符合拟二级动力学方程(R2>0.99)。吸附量随KN-R初始浓度的增加而增加,吸附过程既符合Freundlich方程又符合Langmuir方程。吸附过程中吉布斯自由能变化成负值,说明吸附过程是自发进行的。 Two adsorbents were prepared by peanut hull and walnut hull.Adsorption mechanism to reactive brilliant blue KN-R was discussed from the kinetics and thermodynamics and compared with activated carbon.Results showed that the kinetics of the interactions showed better agreement with the quasi second order kinetic(R2> 0.99).Capacity increased with increasing the initial concentration of KN-R,and the adsorption data showed a good fit both with Freundlich isotherm and Langmuir isotherm.The free energy value calculated from Van't Hoff equation was negative,indicating that the KN-R adsorption was a spontaneous process.

关 键 词： 花生壳 核桃壳 活性艳蓝 吸附动力学 热力学

领　　域： [环境科学与工程] [理学] [理学]