Adsorption Behaviours of Sorbic Acid onto Polymeric Adsorbent Modified with 2-Carboxybenzoyl Group

2013 Asian Journal of Chemistry  
In the present study, a hypercrosslinked polymeric adsorbent (ZH-01) was employed to remove sorbic acid. The study focuses on the static equilibrium adsorption behaviours and the adsorption thermodynamics. Freundlich and Langmuir model give perfect fitting to the isotherm data. The adsorbing capacities for sorbic acid on ZH-01 is higher than on Amberlite XAD-4 within the temperature range 288-318 K, which is contributed to microporous structure and the polar groups on the network of ZH-01
more » ... The changes of enthalpy, free energy, entropy were indicative of an exothermic, a spontaneous and disorder decreasing process. The data of the kinetics were fit for the first-order equation. The results showed that the hypercrosslinked polymeric adsorbent (ZH-01) was better than the Amberlite XAD-4 for removing the sorbic acid in aqueous solutions.
doi:10.14233/ajchem.2013.15738 fatcat:ieoxpe2yqfgx3dbquesamkjczu