Construction of chitosan based magnetic bio adsorbent for efficient recovery of Ni(II)

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 141864 - 141864

Published: March 1, 2025

Language: Английский

Development of Chitosan Based Hybrid Nanocomposite Adsorbent for Removal of Phosphate and Nitrate From Wastewater

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 3, 2025

ABSTRACT The removal of nitrate and phosphate ions from water bodies is essential to reduce eutrophication health hazards. In the present study, a hybrid polymer nanocomposite has been developed for adsorptive wastewater. preparation achieved by microwave irradiation aqueous mixture chitosan (CS), poly(diallyldimethylammonium chloride) (PDADMAC), N‐(2‐hydroxyethyl)acrylamide (HEAAm) N,N′‐methylenebis(acrylamide) (MBA) in presence radical initiator followed incorporation magnetite nanoparticles. A semi‐interpenetrating network (IPN) appears be formed entanglement PDADMAC chains with MBA crosslinked chitosan‐graft‐poly[N‐(2‐hydroxyethyl)acrylamide] within which Fe 3 O 4 nanoparticles are held. materials (CS‐g‐PHEAAm)/PDADMAC (CS‐g‐PHEAAm)/PDADMAC/Fe were characterized their physicochemical structures using FTIR, XRD, SEM, EDS, BET, VSM, TGA techniques. Their utility as adsorbents was evaluated through adsorption studies. process optimized contact time, solution pH, adsorbent dosage, temperature, initial adsorbate concentration. data showed close fit Freundlich isotherm pseudo‐second‐order kinetic models. observed enhance capacity parent IPN significantly value 60.97 65.35 mg g −1 towards 69.93 76.33 phosphate. thermodynamic studies indicated spontaneous endothermic process. regeneration ability along its superparamagnetic biodegradable characteristics makes it material choice absorptive

Language: Английский

Sustainable chitosan-based adsorbents for phosphorus recovery and removal from wastewater: A review

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 144160 - 144160

Published: May 1, 2025

Language: Английский