Adsorption of 1,3-propanediol from synthetic mixture using polymeric resin as adsorbents
The aim of this work was to separate 1,3-PDO from synthetic mixture using polymeric resins, Amberlite XAD-7 and XAD-16 resins. The equilibrium adsorption of 1,3-PDO onto two polymeric resins were investigated in single and binary systems.Experimental results of single component adsorption equilibrium indicated that the adsorption capacity (q) of 1,3-PDO at 160 g/L onto XAD-7 and XAD-16 was 835.96 and 584.61 mg 1,3-PDO/g dry resin, respectively. The equilibrium adsorption data were adequately characterized by Freundlich model. The value of KF and n of 1,3-PDO adsorbed on XAD-7 are much higher than those on XAD-16. This result suggested that the XAD-7 is favorable for 1,3-PDO adsorption than XAD-16 resin.Moreover, the value of adsorption capacity of 1,3-PDO in single and binary components were compared at the same conditions. The results showed that the selectivity of 1,3-PDO from XAD-7 was approximately six times higher than XAD-16 but, interestingly, in binary components, the adsorption capacity of 1,3-PDO at 160 g/L onto XAD-16 was higher than XAD-7. However, the mass of adsorbed/desorbed 1,3-PDO from XAD-16 at 160 g/L was higher than XAD-7, which demonstrated that the adsorption of 1,3-PDO onto XAD-16 is favorable than XAD-7 in binary components. Furthermore, the investigation about desorption by ethanol/water mixture at 50% (v/v) indicated that the desorption yield from XAD-7 was 80.91% which was lower than the XAD-16 (85.13%). This was due to more favorable adsorption characteristic of XDA-7 resin than XAD-16 resin.
W. LUERRUK A. SHOTIPRUK V. TANTAYAKOM P. PRASITCHOKE C. MUANGNAPOH
Department of Chemical Engineering, Faculty of Engineering,Chulalongkorn University, Bangkok 10330, Department of Innovation and Technology,PTT Chemical Public Company Limited, Thailand
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）