Efficient removal of arsenic (V) and methyl orange from aqueous solution using hollow magnetic chitosan composite microspheres: Low arsenic concentration, high adsorption capacity, and minimal adsorbent requirement.

ABSTRACT: In this study, hollow Fe3O4-SiO2-chitosan adsorbent with an optimal chitosan concentration of 2% (w/v) was synthesized to enhance arsenic (V) adsorption performance from low-concentration aqueous solutions. The hollowing process was used to enhance the surface area of the adsorbent and compensate for the surface area reduction of Fe3O4 nanoparticles induced by SiO2 and chitosan coating layers. Furthermore, the adsorption properties of organic pollutants were evaluated using methyl orange as the adsorbate. The microspheres underwent systematic characterization, and their arsenic (V) and methyl orange adsorption capacities were evaluated under various influencing factors. The results indicated improved surface area (202.174 m2/g) compared to non-hollow magnetic adsorbents (110 m2/g) reported

SUBMITTER: Jorshahri ZH 

PROVIDER: S-EPMC12700423 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature