Phuong Lan Tran-Nguyen, Kim-Phung Ly, Huynh-Giao Dang, Minh-Nhut Nguyen, Van-Phat Dang, Nguyen-Phuong-Dung Tran, Shella Permatasari Santoso, Maria Yuliana, Artik Elisa Angkawijaya, Tran Thi Bich Quyen, Tran Thi Minh Thu, Vo Hoang Khang
This study targeted to generating composites comprised of sugarcane bagasse (SCB) and magnetic particles (MPs) under a facile and low-cost approach. Moreover, the adsorption performance of composites, treated SCB, and MPs for crystal violet (CV) was evaluated. Cellulose fibers were firstly isolated from SCB with a two-step process and employed as a matrix material to randomly adhere MPs via an in situ chemical co-precipitation method at room temperature. The properties of the composite were determined through analysis methods such as X-ray diffractometer (XRD), scanning electron microscopy with energy-dispersive X-ray analysis (EDX/SEM), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), vibrating sample magnetometer (VSM), and Brunauer–Emmett–Teller (BET). Magnetization, surface area, and pore diameter of magnetic fiber composite were 11.1 emu/g, 20 m2/g, and 0.002 cm3/g, respectively. The characteristic peaks of cellulose and MPs were found in XRD results, whereas the Fe content in composite was 27.52%. FTIR spectra also exposed the characteristic functional groups of MPs and treated SCB. Additionally, the CV removal using composites was evaluated with the adsorption efficiency and capacity of 72.09% and 77.22 mg/g, respectively, at pH 7, an adsorbent dose of 2 g/L, a CV concentration of 150 mg/L within 30 min. The adsorption process corresponded to the Sips model and the pseudo-second-order kinetic model. Besides, the mechanism of CV adsorption was primarily characterized by heterogeneous adsorption on the surface and physical sorption. In short, the obtained composite was a promising adsorbent for treating the dye-containing wastewater. © The Author(s), under exclusive licence to the Institute of Chemistry, Slovak Academy of Sciences 2025.
Faculty of Mechanical Engineering, Can Tho University, Campus II, 3/2 Street, Can Tho City, 900100, Viet Nam; Faculty of Chemical Engineering, Can Tho University, Campus II, 3/2 Street, Can Tho City, 900100, Viet Nam; Stem Cell Laboratory, Department of Molecular Biology, Institute of Biotechnology and Food, Can Tho University, Campus II, 3/2 Street, Can Tho City, 900100, Viet Nam; Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Rd., Taipei, 10607, Taiwan; Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan, 37, Surabaya, 60133, Indonesia; Center for Sustainable Resource Science, RIKEN, Yokohama, Japan; Faculty of Biotechnology, Chemical Engineering, Food Technology, Can Tho University of Technology, Can Tho City, Viet Nam; School of Basic Sciences, Tra Vinh University, Tra Vinh, Viet Nam