Adsorption mechanism of phenolic compounds from aqueous solution on hypercrosslinked polymeric adsorbent
  • 【DOI】

    10.3321/j.issn:1001-0742.2004.06.009

  • 【摘要】

    The adsorption of two phenols, namely, phenol and salicylic acid(SA) onto a water-compatible hypercrosslinked polymeric resin(NJ-8) were studied in terms of pseudo-second-order and first order mechani... 展开>>The adsorption of two phenols, namely, phenol and salicylic acid(SA) onto a water-compatible hypercrosslinked polymeric resin(NJ-8) were studied in terms of pseudo-second-order and first order mechanisms for chemical sorption as well as an intraparticle diffusion mechanism process. Kinetic analysis showed that the intraparticle diffusion process was the essential rate-controlling step. The activation energies of sorption have also been evaluated with the pseudo-second-order and intraparticle diffusion constants, respectively. Adsorption equilibrium data were well fitted by the Langmuir, Freundlich and Redlich-Peterson isotherms. Adsorption was exothermic and basically of a type of transition between physical and chemical character. The sorption capacity was higher for SA due to its more hydrophobic. Phenol has a higher adsorption enthalpy since it could form stronger hydrogen bonding on NJ-8. 收起<<

  • 【作者】

  • 【作者单位】

    State Key Laboratory of Pollution Control and Resources Reuse/School of Environment

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2004年6期

  • 【关键词】

    hypercrosslinked polystyrene resin  phenol  salicylic acid(SA)  adsorption  enthalpy 

  • 【基金项目】

    国家高技术研究发展计划(863计划) 中国博士后科学基金 Sino-French P2R Project