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All Journal Bulletin of Chemical Reaction Engineering & Catalysis
Nanik Dwi Nurhayati
Chemistry Education Study Program, Faculty of Teacher Training and Education, Sebelas Maret University, Jl. Ir. Sutami 36A Surakarta 57126
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Eco-Friendly Activation of Fe₂O₃/GSBA-15 Using Tamarindus indica Pulp Extract for Enhanced Adsorptive Removal of Methylene Blue and Methyl Orange from Contaminated Water Maria Ulfa; Youlanda Jesiva Alba; Nurma Yunita Indriyanti; Nanik Dwi Nurhayati; Agung C. Saputro
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 4 Year 2026 (December 2026) (Issue in Progress)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20757

Abstract

In this study, a sustainable mesoporous silica material was synthesized using gelatin as a co-template (GSBA-15), followed by the incorporation of iron oxide (Fe₂O₃) to enhance its adsorption performance toward methylene blue (MB) and methyl orange (MO). Tamarindus indica pulp extract (TIE) was employed as a natural and environmentally benign activating agent, providing organic functionalities that facilitated material synthesis and surface modification. The adsorption performance of the synthesized materials, namely GSBA-15 and Fe₂O₃/GSBA-15-TIE, was evaluated using UV–Vis spectrophotometry. Under optimal adsorption conditions, the maximum adsorption capacities for MB were 176.062 and 183.497 mg.g⁻¹ for GSBA-15 and Fe₂O₃/GSBA-15-TIE, respectively. For MO, the corresponding adsorption capacities were 15.582 and 16.000 mg.g⁻¹. Kinetic studies revealed that the adsorption of both dyes was best described by the pseudo-second-order model, suggesting that chemisorption played a dominant role in the adsorption process. The enhanced adsorption performance of Fe₂O₃/GSBA-15-TIE compared with pristine GSBA-15 demonstrates the beneficial effects of iron oxide incorporation and TIE activation. These findings highlight the potential of Fe₂O₃/GSBA-15-TIE as a sustainable and efficient adsorbent for dye removal in wastewater treatment applications. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Co-Authors Agung C. Saputro Maria Ulfa Nurma Yunita Indriyanti Youlanda Jesiva Alba