Adsorption of vanillin using macroporous resin H103
Abu Samah, Rozaimi and Zainol, Norazwina and Phang, Lai Yee and Michael Pawing, Christine and Abd. Aziz, Suraini (2013) Adsorption of vanillin using macroporous resin H103. Adsorption Science & Technology, 31 (7). pp. 599-610. ISSN 0263-6174; ESSN: 2048-4038
Official URL: http://adt.sagepub.com/content/31/7/599.abstract
Six resins (Amberlite XAD-16, Amberlite XAD-2, Sepabeads SP207, DIAION HP-20, DM11 and H103) were tested for vanillin adsorption in aqueous solution. All of the resins gave more than 95% adsorption rate except for Amberlite XAD-2 and DM11. Resin H103 was selected for the subsequent work due to its high adsorption capacity and low cost. A kinetic analysis revealed that the adsorption process followed pseudo-second-order kinetic model and occurred rapidly. The equilibrium point was reached after 90 minutes of reaction. Adsorption isotherm was also determined at 25 °C and it was fitted to Langmuir and Freundlich equations using linear regression and non-linear regression (sum of squares) methods. The regression shows that the adsorption of vanillin onto resin H103 followed Langmuir model (R2 = 0.9984) with a maximum capacity of 73.015 mg/g.
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