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邻苯二酚的吸附行为研究
引用本文:李改枝,刘颖. 邻苯二酚的吸附行为研究[J]. 内蒙古师范大学学报(自然科学版), 2007, 36(4): 470-473,476
作者姓名:李改枝  刘颖
作者单位:内蒙古师范大学,化学与环境科学学院,内蒙古,呼和浩特,010022;内蒙古师范大学,化学与环境科学学院,内蒙古,呼和浩特,010022
摘    要:研究了粘土及改性土壤(十六烷基三甲基溴化铵-CTMAB)对邻苯二酚的吸附,探讨了二者的吸附等温线和吸附动力学.观察了pH值和离子强度对吸附的影响.结果表明.改性土对水中邻苯二酚的吸附能力明显优于原土;原土及改性土对邻苯二酚的吸附均符合Langmuir等温式,吸附速率都符合一级动力学规律;随着离子强度的增大,原土的吸附能力有所减弱,而改性土的吸附能力却明显增强;随着pH增大,两者的吸附能力均增强;原土及改性土的吸附作用皆以分配为主.

关 键 词:土壤  邻苯二酚  吸附  改性土
文章编号:1001-8735(2007)04-0470-04
收稿时间:2006-08-14
修稿时间:2006-08-14

A Study on Adsorption of O-dihydroxy Benzene
LI Gai-zhi,LIU Ying. A Study on Adsorption of O-dihydroxy Benzene[J]. Journal of Inner Mongolia Normal University(Natural Science Edition), 2007, 36(4): 470-473,476
Authors:LI Gai-zhi  LIU Ying
Affiliation:College of Chemical and Enviromental Science, lnner Mongolia Normal University, Huhhot 010022,China
Abstract:Adsorption of o-dihydroxybenzene on soil and modified soil(ammonium -CTMAB modified with 16 alkyl three methyl bromide) was studied.Adsorption thermoisopleth and adsorption dynamics,and influence of pH value and ion intensity to adsorption were investigated.The results showed that the modified soils have higher ability for o-dihydroxy benzene than unmodified one.Thermoisopleth of adsorption of o-dihydroxy benzene accords with Langmuir isotherm.The adsorption speed of o-dihydroxy benzene accords with the first class dynamics law.Along with the increase of ion strength,the adsorption ability of the unmodified soils weakens,and the adsorption ability of the modified soils strengthens obviously.The adsorption ability is strengthened following pH increasing.
Keywords:soil   o-dihydroxy benzene   adsorption   modified soil
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