Thermodynamic study of adsorption of phenolic compounds onto Amberlite XAD-4 polymeric adsorbents and its acetylized derivative MX-4  

作　　者：LIAi-min ZHANGQuan-xing CHENJin-longJm-long FEIZheng-hao LONGChao1 

机构地区：[1]StateKeyLaboratoryofPollutionControlandResourcesReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093,China. [2]InstituteofAppliedChemistry＆EnvironmentalEngineering,DepartmentofChemistry,YanchengNormalCollege,Yancheng224002,China

出　　处：《Journal of Environmental Sciences》2002年第4期457-463,共7页环境科学学报（英文版）

基　　金：TheScienceandTechnologyCouncilofJiangsuProvince ;China(No.BK2 0 0 0 1 6)

摘　　要：Adsorption equilibrium isotherms of phenolic compounds, phenol, p cresol, p chlorophenol and p nitrophenol, from aqueous solutions by Amberlite XAD 4 polymeric adsorbent and its acetylized derivative MX 4 within temperature range of 283 323K were obtained and fitted to the Freundlich isotherms. The capacities of equilibrium adsorption for all four phenolic compounds from their aqueous solutions increased around 20% on the acetylized resin, which may be contributed to the specific surface area and the partial polarity on the network. Estimations of the isosteric enthalpy, free energy, and entropy for the adsorption process were reported.Adsorption equilibrium isotherms of phenolic compounds, phenol, p cresol, p chlorophenol and p nitrophenol, from aqueous solutions by Amberlite XAD 4 polymeric adsorbent and its acetylized derivative MX 4 within temperature range of 283 323K were obtained and fitted to the Freundlich isotherms. The capacities of equilibrium adsorption for all four phenolic compounds from their aqueous solutions increased around 20% on the acetylized resin, which may be contributed to the specific surface area and the partial polarity on the network. Estimations of the isosteric enthalpy, free energy, and entropy for the adsorption process were reported.

关 键 词：macroporous polymeric adsorbent phenolic compound adsorption thermodynamic temperature effect 

分 类 号：X703.1[环境科学与工程—环境工程] TQ028[化学工程]