In this study, granular activated carbon (GAC) was impregnated with ferrous sulfate using Fe(II)-H2O2 or Fe(II)-O2(air), and considered in terms of the potential for improved removal of arsenic, in the form of arsenate ion, from drinking water. The equilibrium adsorption capacity (qe) of Fe-GAC prepared in the same method increased linearly with the iron content in the GAC (R2&gt;0.94). The impregnated iron was used more efficiently for arsenate removal when applying the Fe(II)-H2O2 process, with nano-scale rod-like structures of FeOOH on the surface of the GAC being mainly responsible for the arsenate removal. The adsorption capacity (q) of Fe-GAC prepared in the different method increased linearly with the iron content in the GAC (R2&gt;0.91). The presence of Cl-, SO42-, NO3-, ClO4-, and PO43 - inhibited the adsorption of arsenate, but BrO3- promoted the adsorption of arsenate.

Preparation of Fe(II)-impregnated granular activated carbon for arsenate removal from water

249th National Meeting (2015)

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