CAJ | 학술논문

对多氯联苯在多组分体系中的吸附行为进行了初步研究, 考察了多氯联苯在土壤中的吸附动力学及在5种不同性质土壤中的吸附行为.结果表明,多氯联苯在5种土壤上的吸附等温线无法用线性、Freundlich或Langmuir中的一个方程来描述,而本实验建立的组合模型可以很好地反映多氯联苯在各种土壤中的吸附行为,其数据拟合结果明显优于其他3种模型.多氯联苯在土壤中的吸附分为两个部分,一部分是线性吸附,另一部分是Langmuir非线性吸附.随着土壤有机碳含量的增加, 非线性吸附愈明显.
대다록련분재다조분체계중적흡부행위진행료초보연구, 고찰료다록련분재토양중적흡부동역학급재5충불동성질토양중적흡부행위.결과표명,다록련분재5충토양상적흡부등온선무법용선성、Freundlich혹Langmuir중적일개방정래묘술,이본실험건립적조합모형가이흔호지반영다록련분재각충토양중적흡부행위,기수거의합결과명현우우기타3충모형.다록련분재토양중적흡부분위량개부분,일부분시선성흡부,령일부분시Langmuir비선성흡부.수착토양유궤탄함량적증가, 비선성흡부유명현.
The adsorption behavior of PCBs in multi-component system was studied preliminarily. The adsorption kinetics in soil and this behavior in five kinds of soil with different properties were investigated. The results showed that their adsorption isotherms could not be described by linear, Langmuir or Freundlich equation; while the composite model established in this experiment could well reflect the adsorption behavior, and its data was better-fit than the other three models. The adsorption of PCBs on soils consisted of linear fraction and Langmuir non-linear fraction. The non-linear fraction became more significant as the organic matter content of soil increased.