| 不同条件下菲和萘在塿土上的吸附特征研究 |
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| 引用本文： | 万卷敏,刘霞,张文娟,张萌,杨亚提.不同条件下菲和萘在塿土上的吸附特征研究[J].农业环境科学学报,2011,30(10). |
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| 作者姓名： | 万卷敏 刘霞 张文娟 张萌 杨亚提 |
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| 作者单位： | 1. 西北农林科技大学资源环境学院,陕西 杨凌,712100
2. 西北农林科技大学理学院,陕西 杨凌,712100 |
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| 基金项目： | 陕西省科技攻关计划项目(2009K02-03) |
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| 摘 要： | 以平衡吸附法研究了菲和萘在塿土上的吸附行为,考察了初始浓度、温度、pH、离子强度和CaCO3对塿土吸附菲和萘的影响,Henry方程、Freundlich方程和deBoer-Zwikker极化方程被用来拟和吸附等温线。结果表明,菲和萘在塿土上的吸附等温线为非线性,Freundlich方程最符合其吸附行为。菲和萘在塿土上的吸附量随温度升高而降低,其吸附是一个放热过程;吸附自由能小于零,表明吸附过程是自发的;熵变值也小于零,说明焓变是吸附过程的驱动力。随着pH增加,塿土对菲和萘的吸附量下降;而随着离子强度增加,塿土对菲和萘的吸附量增加。CaCO对菲和萘的吸附等温线也为非线性,其对塿土吸附菲和萘具有较大的贡献。
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| 关 键 词： | 菲 萘 塿土 吸附 热力学 |
Adsorption Characteristics of Phenanthrene and Naphthaleneon on Lou Soil |
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| WAN Juan-min,LIU Xia,ZHANG Wen-juan,ZHANG Meng,YANG Ya-ti.Adsorption Characteristics of Phenanthrene and Naphthaleneon on Lou Soil[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2011,30(10). |
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| Authors: | WAN Juan-min LIU Xia ZHANG Wen-juan ZHANG Meng YANG Ya-ti |
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| Institution: | WAN Juan-min 1,LIU Xia1,ZHANG Wen-juan1,ZHANG Meng1,YANG Ya-ti 2*(1.College of Resources and Environment,Northwest A & F University,Yangling 712100,China,2.College of Science,China) |
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| Abstract: | Batch adsorption experiments were employed to evaluate the adsorption characteristics of phenanthrene and naphthalene on Lou soil,the factors affected its adsorption,i.e.temperature,pH,ionic strength and CaCO3,and the fitness of adsorption equations,i.e.Henry equation,Freundlich model and deBoer-Zwikker equation were studied also.The results showed that the adsorption of both phenanthrene and naphthalene on Lou soil are non-linear style,the Freundlich equation is the best model to describe their adsorption ... |
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| Keywords: | phenanthrene naphthalene Lou soil adsorption thermodynamics |
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