Investigating the influence of synthesis parameters on chitosan microparticle characteristics and Cr(VI) adsorption potential

Sapei, Lanny and Adiarto, Tokok and Suseno, Natalia and Hidayah, Nadhifatul and Kemhay, Nasira (2026) Investigating the influence of synthesis parameters on chitosan microparticle characteristics and Cr(VI) adsorption potential. Discover Applied Sciences, 8 (486). pp. 1-17. ISSN 3004-9261

PDF sapei_2026_ChMP_repository.pdf Download (4MB)

Abstract

Chitosan, a biopolymer derived from chitin, is a promising sustainable material for environmental remediation due to its biocompatibility and non-toxicity. Chitosan microparticles (ChMPs) offer enhanced functionality over bulk chitosan, yet their properties are highly sensitive to synthesis conditions. This study systematically evaluates the effects of bulk chitosan concentration (3, 6, and 9% w/v), degree of deacetylation (DD; 79.9%, 81.1%, and 82.6%), and stirring time (2, 4, and 6 h) on the morphology, size, and adsorption performance of ChMPs produced via ionic gelation followed by spray drying. SEM and FTIR analyses confirmed successful ionic cross linking and revealed that longer stirring times and lower chitosan concentrations yielded smaller particles with more porous and irregular morphologies. Higher DD increased charge density and cross-linking intensity, resulting in structurally stable particles with enhanced surface accessibility. ChMPs synthesized under optimized conditions exhibited significantly improved Cr(VI) adsorption compared to bulk chitosan. These findings provide a reproducible framework for tailoring ChMP properties and demonstrate their potential as efficient, scalable, and sustainable adsorbents for heavy-metal removal.

Item Type:	Article
Uncontrolled Keywords:	Adsorption, Chitosan microparticles, Chromium(VI), Degree of deacetylation, Ionic gelation
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	Ester Sri W. 196039
Date Deposited:	27 Apr 2026 03:14
Last Modified:	27 Apr 2026 03:14
URI:	http://repository.ubaya.ac.id/id/eprint/50671

Actions (login required)

View Item