Antimony(V) in trace level in surface water brings the challenge for the drinking water treatment. Iron oxide has been proven as a good adsorbent for antimony removal. However, powder iron oxide in water is difficult to separate and reuse. Meanwhile, the transfer efficiency of the trace antimony(V) to the surface of iron oxide is too low to get a high removal. Based on the above, the iron oxide loaded on to the chitosan and cellulose acetate granular particles (CS/CA-Fe) is prepared for trace antimony(V) removal. The removal efficiency shows the high dependence on the solution pH. At low pH, it occurs the protonation of amino group and makes the surface to have the positive charge which benefits the surface enrichment of antimony(V) from water. The adsorption capacity of CS/CA-Fe is 43.6 mg/g which is higher than that of hydrated ferric oxides supported by calcite sand.<br/>

Enhanced removal of trace antimony(V) in water by iron oxide supported by chitosan/cellulose acetate

253rd National Meeting (2017)

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