Removal of Antimony(V) from aqueous solutions by electrodeionization.
Makaleler > Tam Makale · 2025
Yazarlar: Ecem Köseoğlu, Yaşar Kemal Recepoğlu, Özgür ARAR
CHEMOSPHERE, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2025, cilt 371, ss 144070-144070
DOI: 10.1016/j.chemosphere.2025.144070
Özet
This study investigates the removal efficiency of the toxic element antimony (Sb(V)) using a combined system incorporating ion exchange resins and ion exchange membranes to form an Electrodeionization (EDI) cell. The impact of various operational parameters, including applied potential, flow rate, Na₂SO₄ concentration in the electrode compartment, and the presence of interfering ions, on Sb(V) removal was systematically examined. Results indicate that increasing the applied potential significantly enhances Sb(V) removal, achieving a maximum removal rate of 99% at 40V and 50V, with the residual Sb(V) concentrations reducing to 60mug/L and 9mug/L, respectively. Variation in flow rate from 1L/h to 3L/h showed that removal efficiency peaks at 99% for flow rates of 2L/h and above. Adjusting the Na₂SO₄ concentration from 0.005M to 0.05M in the electrode compartment also improves removal efficiency, maintaining a rate of 99%. Furthermore, the presence of low concentrations of Cl⁻, SO₄2⁻, NO₃⁻, and PO₄⁻ ions resulted in achieving a 99% removal efficiency of Sb(V). These findings demonstrate the system's robustness and potential for effective Sb(V) removal from aqueous solutions under varying operational conditions.