ADSORPTION OF 2,4-DICHLOROBENZOXYACETIC ACID ONTO HYPERCROSSLINKED RESIN MODIFIED BY PHENOLIC HYDROXYL GROUP (AM-1) |
| |
| Authors: | Zheng-hao Fei Jin-long Chen ian-guo Cai Yu-ping Qiu Ai-min Li Quan-xing Zhang |
| |
| Institution: | a.State Key Laboratory of Pollution Control and Resources Reuse; School of the Environment; Nanjing University; Nanjing 210093; China b.Institute of Applied Chemistry & Environmental Engineering; Department of Chemistry; Yancheng Teachers College; Jiangsu |
| |
| Abstract: | An experimental comparison of the adsorption properties of hypercrosslinked resin AM-1 modified by phenolic hydroxyl group with Amberlite XAD-4 toward 2,4-dichlorobenzoxyacetic acid was performed. This paper focuses on the static equilibrium adsorption behaviors and the adsorption thermodynamics. Two isotherm models were used to explain the results. It is seen that the Langmuir equation can give a perfect fit. The adsorption capacities from the different ranges of temperature, the adsorption enthalpy change value and the comparison of desorption conditions lead to the same conclusion
that the adsorption of 2,4-dichlorobenzoxyacetic acid from water onto AM-1 is a type of physical and chemical transition. |
| |
| Keywords: | Hypercrosslinked polymeric adsorbent 4-Dichlorobenzoxyacetic acid Thermodynamic properties Chemical adsorption transition |
|
| 点击此处可从《高分子科学》浏览原始摘要信息 |
| 点击此处可从《高分子科学》下载免费的PDF全文 |
