化学工程Issue(3)：24-28,48,6.DOI:10.3969/j.issn.1005-9954.2014.03.005
苦味酸和2，4-二硝基酚在弱碱性树脂上的等温吸附
Isotherm adsorption of picric acid and 2,4-dinitrophenol on weak basic resin
摘要
Abstract
The adsorption equilibrium of picric acid and 2,4-dinitrophenol onto D301R resin in aqueous solutions was studied by static method,as well as the effect of resin content,temperature and adsorbent mass concentration on the adsorption,and the characteristics of isotherm adsorption.The experimental results show that in a single solute system,the adsorption of picric acid or the 2,4-dinitrophenol decreases with the increase of the resin amount,and increases with temperature rise,which is an endothermic process.The adsorption of picric acid and 2, 4-dinitrophenol by D301R resin in a single solute system obeys the Freundlich isotherm at equilibrium mass concentration of 1-350 mg/L.However in a binary solute system,the adsorption of picric acid shows a maximum with the increase of resin content,while the adsorption of 2,4-dinitrophenol is essentially the same as that of single solute.The isotherm adsorption of binary solute indicates that once the isotherm of 2,4-dinitrophenol passes a turning point,the afterward adsorption rises sharply.Unlike in the case of a single solute system,the adsorption of picric acid declines after reaching a maximum at the isotherms.The adsorptive characteristics of the picric acid and the 2,4-dinitrophenol in binary systems present a varying degree of competitive adsorption.关键词
苦味酸/2,4-二硝基酚/D301R 弱碱性树脂/吸附等温线Key words
picric acid/2,4-dinitrophenol/D301R weak basic resin/isotherm adsorption分类
资源环境引用本文复制引用
谢祖芳,童张法,陈渊,晏全,庞宗格..苦味酸和2，4-二硝基酚在弱碱性树脂上的等温吸附[J].化学工程,2014,(3):24-28,48,6.基金项目
广西自然科学基金资助项目 （）
