CAJ | 학술논문

采用振荡平衡法对缙云山典型紫色土吸附TNT过程进行研究，探讨供试土壤对TNT吸附的动力学特征。结果表明，TNT在供试土壤上的吸附可分为快速吸附和慢速吸附2个过程，快速吸附过程主要发生在初始的15 min内，并且在吸附8 h后基本达到平衡。对动力学数据采用准一级动力学模型、准二级动力学模型、Elovich动力学模型以及颗粒内扩散模型进行拟合，拟合结果排序为准二级动力学模型>Elovich动力学模型>准一级动力学模型>颗粒内扩散模型，说明供试土壤对TNT的吸附过程具体可分为液膜扩散、表面吸附以及内扩散3个阶段。
채용진탕평형법대진운산전형자색토흡부TNT과정진행연구，탐토공시토양대TNT흡부적동역학특정。결과표명，TNT재공시토양상적흡부가분위쾌속흡부화만속흡부2개과정，쾌속흡부과정주요발생재초시적15 min내，병차재흡부8 h후기본체도평형。대동역학수거채용준일급동역학모형、준이급동역학모형、Elovich동역학모형이급과립내확산모형진행의합，의합결과배서위준이급동역학모형>Elovich동역학모형>준일급동역학모형>과립내확산모형，설명공시토양대TNT적흡부과정구체가분위액막확산、표면흡부이급내확산3개계단。
The adsorption process of TNT onto the Jin?yun Mountain representative purple soil was investigated with batch equilibrium method, and the characteristics of adsorption kinetics were explored in the study. The results showed that the process of TNT adsorption onto the soil could be divided into two stages:fast adsorption and slow equilibrium. The fast adsorption stage mainly occurred in the initial 15 minutes, and the equilibrium time of adsorption was after 8 hours. The data of kinetic experiments were fit?ted with pseudo first?order, pseudo second?order, Elovich and intra?particle diffusion kinetic models. The fitting results showed that the fitting order of four models was pseudo?second order kinetic model>Elovich kinetic model>pseudo?first order kinetic model>intra?particle diffusion kinetic model. It was indicated that the process of TNT adsorption onto the soil included three stages:liquid film diffusion, surface adsorption and intraparticle diffusion.