Sustainable Low-Concentration Arsenite [As(III)] Removal in Single and Multicomponent Systems Using Hybrid Iron Oxide–Biochar Nanocomposite Adsorbents—A Mechanistic Study
Prachi Singh, Ankur Sarswat, Charles U. Pittman, Todd Mlsna, Dinesh Mohan
Abstract
. Simultaneous As(III) desorption and regeneration of RHIOB and WHIOB was successfully achieved. A very nominal decrease in As(III) removal capacity in four consecutive cycles demonstrates the reusability of RHIOB and WHIOB. Furthermore, these sustainable composites had good sorption efficiencies and may be removed magnetically to avoid slow filtration.
Topics & Concepts
Freundlich equationAdsorptionBiocharLangmuirNuclear chemistryLangmuir adsorption modelChemistryOxideScanning electron microscopeX-ray photoelectron spectroscopyChemical engineeringMaterials sciencePyrolysisOrganic chemistryComposite materialEngineeringArsenic contamination and mitigationIron oxide chemistry and applicationsAdsorption and biosorption for pollutant removal