Mechanistic insights into schwertmannite-mediated As(III) oxidation regulated by fulvic acid binding modes
Wenxiu Qin
Arsenic contamination in soil is one of the major issues faced globally. Arsenic (As(III)) and arsenate (As(V)) are the two common forms of arsenic present in soil, with the former being more mobile and toxic This study systematically investigated the synergistic oxidation and immobilization mechanisms of As(III) in systems combining fulvic acid (FA) with schwertmannite (Sch) under two distinct association modes: adsorption (FA + Sch) and co-precipitation (FA-Sch). The results indicated that Sch