Abstract
The present study deals with the separation of lactic acid (LA) by a polymeric adsorbent Amberlite XAD-7. Equilibrium and kinetic studies were carried out to investigate adsorption of LA on Amberlite XAD-7 at three different temperatures (298, 308, and 318 K). Equilibrium studies revealed the optimum dose of Amberlite XAD-7 as 2.5 g. The adsorption equilibrium time was determined as 90 min. Adsorption isotherms such as Freundlich, Langmuir, Temkin, and Dubinin–Radushkevich were validated using the obtained experimental data. Langmuir isotherms showed better fitting with the experimental data with R2 = 0.99. Pseudo-second-order model and Elovich model were used to fit the adsorption system. Study also revealed 99% removal of LA using Amberlite XAD-7.
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