@article{He_Dan_Hong_2013, title={Kinetics and Thermodynamics Studies of Glycyrrhizic Acid Adsorption Using S-8 Macroporous Resin}, volume={25}, url={https://asianpubs.org/index.php/ajchem/article/view/25_18_15}, DOI={10.14233/ajchem.2013.15042}, abstractNote={<p style="text-align: justify;">Simple method for adsorption of glycyrrhizic acid tri-ammonium salt from aqueous solution by the macroporous resin was presented in this work. Static adsorption studies were used for comparing the adsorption capacities of the nine resins, S-8, H1020, NKA, X-5, D4006, D101, AB-8, NKA-II and NKA-9, respectively. The results showed that S-8 resin had the best adsorption capacity. The maximum adsorption capacity of resin S-8 for glycyrrhizic acid tri-ammonium salt was found to be 75.06 mg/g at 303 K. Exploring the static adsorption isotherms, kinetics and thermodynamics on macroporous adsorption resin S-8 from glycyrrhizic acid tri-ammonium salt aqueous solutions. The adsorption isotherm data could be well described by the Langmuir and from which the adsorption capacity was obtained. The adsorption kinetics well fitted using a pseudo second-order kinetic model. Thermodynamic parameters (<em>i.e.</em>, change in the free energy (<span style="font-family: Symbol;">D</span>G), the enthalpy (<span style="font-family: Symbol;">D</span>H) and the entropy (<span style="font-family: Symbol;">D</span>S)) were evaluated and indicate that the adsorption of glycyrrhizic acid triammonium salt onto the S-8 resin was a spontaneous reaction and endothermic process.</p>}, number={17}, journal={Asian Journal of Chemistry}, author={He, Xiujuan and Dan, Jianming and Hong, Chenglin}, year={2013}, month={Nov.}, pages={9492–9496} }