Antimony in municipal waste

Synthesis of Ce(III)-doped Fe3O4 magnetic particles for efficient removal of antimony from aqueous solution

“…the presence of the three anions had no negative effect on the adsorption of Sb(III). Interestingly, a slight increase Sb(III) sorption was observed in the presence of Cl − or SO 4 2− . For the Sb(V), a negligible decreased removal efficacy was observed in the presence of Cl − and SO 4 2− .…”

“…Interestingly, a slight increase Sb(III) sorption was observed in the presence of Cl − or SO 4 2− . For the Sb(V), a negligible decreased removal efficacy was observed in the presence of Cl − and SO 4 2− . However, the presence of PO 4 3− greatly impaired the sorption process, which was resulted from the strong competition by phosphate to binding sites.…”

“…Adsorption kinetics, isotherm, and the effects of solution pH, and coexisting anions (Cl − , SO 4 2− , and PO 4 3− ) were determined in batch adsorption experiments. Desorption experiments were conducted to investigate the reusability and regeneration potential of the sorbent.…”

“…In uncontaminated natural water samples, the antimony exists mainly in the pentavalent [Sb(V)] and trivalent [Sb(III)] oxidation states, in a low concentration range (<0.1 ppb) [2]. However, elevated concentrations of Sb (even ppm level) could be found in some aquatic systems because of anthropogenic influences such as untreated wastewater from antimony mines and smelting plants [3], leaching of municipal waste [4], and so on. Severe health implications including direct lung damage and induced cancer have been found to be associated with the excessive longterm intake of antimony [5].…”

“…Cl − , SO 4 2− , and PO 4 3− ) on adsorption were also investigated. Moreover, we characterized the properties of the Ce III -doped Fe 3 O 4 system in detail.…”