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Morteza Davarpanah,ALI AHMADPOUR,Tahereh Rohani-Bastami,Hossein Dabir 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-
Polystyrene resin was functionalized by diethanolamine for the efficient removal of p-toluenesulfonicacid (p-TSA) from aqueous solution. Functionalized adsorbent (DEA-PS) was characterized by elementalanalysis, Fourier transform infrared spectroscopy, point of zero charge measurement and field-emissionscanning electron microscopy. According to the results, maximum removal of p-TSA was observed at thepH range of 2.5–5. The adsorption kinetics of p-TSA onto DEA-PS was represented by pseudo-first-ordermodel and the equilibrium data followed Langmuir model well. The adsorption process wasendothermic and spontaneous, along with the positive change of entropy. The regeneration of DEAPSwas also conducted by 1 M NaOH solution.