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All Journal Bulletin of Chemical Reaction Engineering & Catalysis
Thi, Nguyen Truong
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Facile Fabrication of Alginate–BiBDC Composite Beads for Efficient Removal of Methylene Blue from Aqueous Solutions Thanh, Nguyen Duy; Thi, Nguyen Truong; Nguyen, Van Cuong; Pham, Hoang Ai Le
Bulletin of Chemical Reaction Engineering & Catalysis 2026: BCREC Volume 21 Issue 3 Year 2026 (October 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.20680

Abstract

Alginate–BiBDC composite beads were produced using Ca²⁺-mediated ionic crosslinking and assessed for methylene blue (MB) adsorption. FT-IR, XRD, SEM, BET, and TGA validated the effective incorporation of BiBDC and the creation of a porous hybrid network. Among the composites, ALG@BiBDC-2 exhibited the most advantageous textural characteristics (14.16 m².g⁻¹ surface area, 0.0324 cm³.g⁻¹ pore volume, 16.27 nm pore size), attaining 85.33% methylene blue removal within 60 min. Adsorption was significantly influenced by pH, dose, concentration, and temperature. At a pHPZC of 6.76, electrostatic attraction predominates in the uptake of MB. The adsorption process followed a pseudo-second-order model and a Langmuir isotherm, indicating chemisorption-driven monolayer adsorption. Thermodynamic analysis validated spontaneous and exothermic characteristics. The beads maintained over 60% effectiveness after four cycles, indicating moderate stability and significant promise for treating dye-contaminated wastewater. 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 Nguyen, Van Cuong Pham, Hoang Ai Le Thanh, Nguyen Duy