Removal of As(III) and As(V) in Groundwater Using Ferrite Adsorbents

概要

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Ferrite adsorbents containing magnesium, cobalt, nickel, zinc were prepared in order to remove As (III) and As (V) . They are adsorbents with large specific surface area. The ferrite adsorbents could effectively adsorb As (III) and As (V) at neutral pH. The adsorption percentage of As (III) and As (V) onto cobalt ferrite was larger than the other ferrite adsorbents. The adsorption capacity of cobalt ferrite for As (III) and As (V) was 0.83 and 0.52 mmol/g, respectively. The adsorption capacities of As (III) and As (V) on magnesium ferrites increased with increasing their specific surface area, suggesting that functional groups on the surface participate in the adsorption.
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