DOI: https://doi.org/10.9767/bcrec.20368

Polyethyleneimine-Functionalized Magnetic Bagasse Composite for Efficient Adsorptive Removal of Yellow 4GL and Black R–S Dyes

1Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Rd, Ho Chi Minh City 700000, Viet Nam

2An Khanh ward, Thu Duc , Ho Chi Minh City, Viet Nam

3Faculty of Chemical Engineering, Ho Chi Minh City University of Industry and Trade, 140 Le Trong Tan Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City 700000, Viet Nam

Received: 14 Mar 2025; Revised: 12 Apr 2025; Accepted: 13 Apr 2025; Available online: 16 Apr 2025; Published: 30 Aug 2025.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2025 by Authors, Published by BCREC Publishing Group
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
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Abstract

Efficient removal of dye contaminants from wastewater remains a significant environmental challenge. In this study, a polyethyleneimine (PEI)-modified magnetic bagasse composite was synthesized by integrating sugarcane bagasse, PEI, Fe₃O₄ nanoparticles, and glutaraldehyde as cross-linking. The synthesized material was comprehensively characterized using SEM, BET, XRD, TGA, and FTIR techniques to elucidate its structural and physicochemical properties. Adsorption experiments were performed to investigate the effects of adsorbent dosage, initial dye concentration, pH, and contact time on the removal efficiency of Yellow 4GL and Black R-S dyes. The PEI-magnetic bagasse composite (PMBC) demonstrated impressive adsorption capacities of 185.19 mg/g for Yellow 4GL and 204.08 mg/g for Black R-S. The adsorption kinetics conformed to the pseudo-second-order model, indicating that chemisorption dominated the process, driven by electrostatic interactions and hydrogen bonding between the amino groups of PEI and the sulfonate groups of the dyes.

Keywords: Magnetic bagasse; Polyethyleneimine; Yellow 4GL; Black R-S; Wastewater treatment.
Funding: Industrial University of Ho Chi Minh City ; Ho Chi Minh City University of Industry and Trade

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Section: Original Research Articles
Language : EN
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