Adsorption of 2,4-dichlorobenzoxyacetic acid onto hypercrosslinked resin modified by phenolic hydroxyl group (AM-1)

作者：Fei ZH; Chen JL^*; Cai JG; Qiu YP; Li AM; Zhang QX

来源：Chinese Journal of Polymer Science, 2004, 22(6): 529-533.

• hypercrosslinked polymeric adsorbent
• 2,4-dichlorobenzoxyacetic acid
• thermodynamic properties
• chemical adsorption transition

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.

• 出版日期2004-12
• 单位盐城师范学院; 中国科学院长春应用化学研究所; 南京大学