Isotherm and Kinetic Adsorption Modeling of Methylene Blue on Bio-Based Materials Prepared from Barringtonia acutangula Seeds
DOI:
https://doi.org/10.62239/jca.2026.014Keywords:
Barringtonia acutangula , seeds , adsorption , methylene blue, kinetics, isothermsAbstract
The valorization of Barringtonia acutangula’s seeds, a common solid waste in Vietnam, as a biosorbent for methylene blue (MB) adsorption was reported. The material’s adsorptive properties were evaluated by FTIR, SEM-EDX, and N2 adsorption-desorption analyzes. Laboratory-scale experiments were conducted, studying the adsorption of MB onto the derived biosorbent under varying adsorption times and initial MB concentrations. Analyzes of the experimental data by kinetic and isotherm models respectively conformed to pseudo-second-order and Langmuir models. The favorable adsorption process by B. acutangula’s seed powder was indicated, adapting an adsorption rate of 14.6 mg g-1 min-1 and a maximum adsorption capacity of 200.0 mg g-1. These findings further substantiate the potential of the prepared biosorbent for MB removal from aqueous environments, and consolidate agricultural by-products or solid waste materials utilization as promising approaches for sustainable and effective wastewater treatment. More in-depth investigation was encouraged, determining this biosorbent applicability in real dye-based wastewater treatment.
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