Addressing the issue of surface mechanisms and competitive effects in Cr(VI) reductive-adsorption on tin-hydroxyapatite in the presence of co-ions.

ABSTRACT: Our group recently proposed an innovative sustainable reductant-adsorbent material, tin(II)-hydroxyapatite (Sn/HAP, ca. 10 wt% Sn) for the interfacial Cr(VI) reductive adsorption process. In this study, Cr(VI) removal capacity was evaluated in multi-component solutions containing representative background ions (i.e., CaCl₂, Ca(NO₃)₂, MgSO₄, Na₂SO₄, Fe(NO₃)₃, AlCl₃, Zn(NO₃)₂, or Mn(NO₃)₂). Sn/HAP was able to reduce Cr(VI) with complete Cr³⁺ adsorption on HAP surface, except in the presence of Fe³⁺ and Al³⁺ ions. Some metal ions co-existing in solution, such as Fe³⁺, Al³⁺, Zn²⁺, and Mn<

SUBMITTER: Avola T 

PROVIDER: S-EPMC10622583 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature