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| 对氯苯胺在湿地土壤中的吸附解吸特性 | |
| 引用本文： | 张志成,姚成,丁成,金建祥.对氯苯胺在湿地土壤中的吸附解吸特性[J].湖北农业科学,2009,48(4). |
| 作者姓名： | 张志成 姚成 丁成 金建祥 |
| 作者单位： | 1. 南京工业大学理学院,南京,210009 2. 盐城工学院化学与生物工程学院,江苏,盐城,224051 3. 盐城工学院化学与生物工程学院,江苏,盐城,224051;东南大学市政工程系,南京,220000 |
| 基金项目： | 国家自然科学基金，江苏省自然科学基金 |
| 摘 要： | 采用平衡振荡法研究时氯苯胺(PCA)在盐城湿地土壤中的吸附解吸过程.湿地土壤吸附动力学表明在lh之内吸附符合幂函数方程(q=96.168t0.2158),1h后符合二级动力学方程(1/ct=0.06+0.0012t).其解吸动力学过程的最优模型为幂函数方程(qt=14.585e0.2318t).吸附等温线符合Freundlch方程(cs=21.38ce0.789)其吸附常数Kd=21.38,对土壤粒子有较大的亲和力.研究还发现PCA在湿地土壤中的吸附量与溶液pH值(pH值5～8)呈正相关,与溶液离子强度呈负相关. |
| 关 键 词： | 对氯苯胺 吸附 解吸 湿地土壤 |
Studies on the Adsorption and Desorption Actions of p-Chloroaniline in Wetland Soil |
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| ZHANG Zhi-cheng,YAO Cheng,DING Cheng,JIN jian-xiang.Studies on the Adsorption and Desorption Actions of p-Chloroaniline in Wetland Soil[J].Hubei Agricultural Sciences,2009,48(4). | |
| Authors: | ZHANG Zhi-cheng YAO Cheng DING Cheng JIN jian-xiang |
| Institution: | 1.College of Sciences;Nanjing University of Technology;Nanjing 210009;China;2.School of Chemistry and Biology Engineering;Yancheng Institute of Technology;Yancheng 224003;Jiangsu;3.Municipal Engineering Department;Southeast University;Nanjing 210000;China |
| Abstract: | The adsorption and desorption course of p-Chloroaniline(PCA) on the wetland soil in Yancheng City were studied in this article. The results showed that power function equation(qt=96.168t0.215 8)and secondary equation(1/ ct=0.06+0.001 2t)were the best models for PCA adsorption on the soil in the first hour and one hour later,respectively. Power function equation (qt=14.585e0.231 8t)was the best models for PCA desorption. Adsorption isotherm of PCA on the soil was nonlinearity which could be described by Freu... |
| Keywords: | p-Chloroaniline adsorption desorption wetland soil |
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