Rahmi, Melsi Agustia Zulasma, Lelifajri, Andriy Anta Kacaribu
This research aims to develop an efficient adsorption material based on chitosan-glycidyl methacrylate grafted cellulose (Chi/GMAgCell) composite film as an adsorbent for the removal of Cd2+ ions from water. Cellulose was isolated from rice straw and grafted with glycidyl methacrylate to produce glycidyl methacrylate-grafted cellulose (GMAgCell). The GMAgCell was incorporated into a chitosan film (Chi-film) as a filler to form the Chi/GMAgCell composite film. To create Chi/GMAgCell composite films with high tensile strength and adsorption capacity (Qe) for Cd2+ ions, various chitosan-to-GMAgCell ratios were tested. These films were then evaluated using FTIR, XRD, SEM, TGA, and tensile strength analysis. The findings indicate that GMAgCell loading enhances the adsorption capacity (Qe) for Cd2+ ions, reaching 16.9 mg/g. Its adsorption equilibrium is achieved after 10 minutes. It also conforms to the pseudo-second-order (PSO) kinetic model, with R2=0.9979. This process enhances the mechanical properties and thermal stability of the Chi-film composite while creating an affordable adsorbent material from agricultural waste. ©2025 The authors.
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Doctoral Program of Agricultural Science, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
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