Removal of Selenium Oxyanions from Aqueous Solutions by Ion Exchange: Equilibrium, Kinetics, and Mechanistic Modeling.

ABSTRACT: Selenium (Se) is an essential micronutrient but toxic at high concentrations, posing challenges for water treatment. This study investigated the removal of selenate (SeO₄ ^2-) and selenite (SeO₃ ^2-) using the strong-base anion-exchange resin IRA-900, particularly in the presence of competing sulfate (SO₄ ^2-). The performance of the commercially available resin IRA-900 was systematically investigated. The batch equilibrium behavior was studied in both single- and binary-component systems, and the kinetic behavior was investigated in single-component systems. Results confirmed a selectivity order of SeO₄ ^2- > SO₄ ^2- > SeO₃ ^2-, indicating preferential SeO₄

SUBMITTER: Zeng Z 

PROVIDER: S-EPMC12797240 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature