The adsorption study of an azo dye using graphene oxide derived from sugarcane bagasse as a green precursor: A waste-to-resource supply chain

Author First name, Last name, Institution

• Meisam Rezaei, Amirkabir University of Technology
• Mohammad Reza Alavi Moghaddam, Amirkabir University of Technology
• Elaheh Kowsari, Amirkabir University of Technology
• Munawwar Ali Khan, Zayed University

Document Type

Article

Source of Publication

Journal of Cleaner Production

Publication Date

6-10-2026

Abstract

The valorization of agricultural waste into functional carbon materials offers a promising approach for sustainable wastewater remediation. Herein, graphene oxide (GO) is synthesized from sugarcane bagasse (SB), a low-cost and renewable precursor, thereby managing both water contamination and waste disposal. The physicochemical characterization revealed that the SB-derived GO (SBGO) possessed abundant oxygen-containing functional groups and a porous morphology (surface area = 192.65 m²/g). The adsorption performance of SBGO for removing Basic Blue 41 (BB41) dye was examined in a batch system under various operating parameters, revealing that initial pH, adsorbent dosage, and dye concentration significantly influenced the process. The adsorption isotherm followed the Langmuir and Temkin models, and the pseudo-second order model provided a good explanation of the kinetics. The negative values of ΔH^° (−13.90 kJ/mol) and ΔG^° in the thermodynamic examination exhibited that the adsorption was exothermic and spontaneous. Optimization applying response surface methodology (RSM) based on central composite design (CCD) identified optimal values of initial pH (10), SBGO dosage (0.4 g/L), and BB41 concentration (227 mg/L), resulting in a removal efficiency of 89.74% and an adsorption capacity of 510.48 mg/g. Furthermore, the mechanism investigation indicated physical adsorption was more dominant than chemisorption, as evidenced by the ΔG^° and ΔH^° values. SBGO demonstrated acceptable regeneration performance over four cycles, highlighting its stability and reusability. Overall, SBGO, as a green and high-performance adsorbent, not only shows promising potential to address environmental challenges posed by dye-contaminated water but also contributes to the circular economy by providing a waste-to-resource supply chain approach.

DOI Link

10.1016/j.jclepro.2026.148628

ISSN

0959-6526

Publisher

Elsevier BV

Volume

567

Disciplines

Environmental Engineering

Keywords

Agricultural wastes, Biochar, Dye adsorption, Graphene oxide, Optimization, Wastewater treatment

Scopus ID

105040601678

Recommended Citation

Rezaei, Meisam; Alavi Moghaddam, Mohammad Reza; Kowsari, Elaheh; and Khan, Munawwar Ali, "The adsorption study of an azo dye using graphene oxide derived from sugarcane bagasse as a green precursor: A waste-to-resource supply chain" (2026). All Works. 8091.
https://zuscholars.zu.ac.ae/works/8091

Indexed in Scopus

yes

Open Access

no