Utilization of Polyethylenimine (PEI) Modified Carbon Black Adsorbent Derived from Tire Waste for the Removal of Aspirin
Journal: Journal of Pharmacy and Pharmacology (Vol.7, No. 4)Publication Date: 2019-04-04
Authors : Dyg Khairunnisa Awg Zaini; Norzita Ngadi; Muhd Asyiq Azman; Khairudin Ahmad;
Page : 222-227
Keywords : ;
Abstract
A new adsorbent was synthesized using polyethylenimine (PEI) on the carbon black to remove aspirin from an aqueous solution. In this study, adsorption performance of modified carbon black by polyethylenimine (PEI) on aspirin was investigated. Batch adsorption studies were performed to evaluate the effects of contact time, pH solution, temperature, and initial concentration on the adsorption of aspirin. For this study, the carbon black obtained from the pyrolysis of tire waste was used as a precursor for low-cost adsorbents. The carbon black was treated by 1 M of hydrochloric acid solution to remove ash and sulphur content. Then, the treated carbon black was modified by impregnation with PEI in one to one weight ratio within 24 hours at 65 °C and then cross linked with 1% (w/v) glutaraldehyde solution for one hour. The adsorption rate of aspirin by modified carbon black was rapid from 20 minutes to 60 minutes and reached equilibrium. Hence, the optimum contact time for this study is 60 minutes with 59.96% of aspirin removal and 29.98 mg/g adsorption capacity. The best performance for pH solution, temperature, and initial concentration was observed at pH 3 (26.1 mg/g), 30 °C (26.9 mg/g) and 20 ppm (40.96 mg/g) respectively.
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