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Column filled with Fe-GAC and GAC to remove both As(V) and Fe(III)
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 Title & Authors
Column filled with Fe-GAC and GAC to remove both As(V) and Fe(III)
Lee, Yong-Soo; Do, Si-Hyun; Hong, Seong-Ho;
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First of all, Fe or/and Mn immobilized granular activated carbons (Fe-GAC, Mn-GAC, (Fe, Mn)-GAC) were synthesized and tested to remove arsenate (As(V)). The results in batch test indicated that Fe-GAC removed As(V) effectively, even though the surface area of Fe-GAC was reduced largely. Moreover, adsorption isotherm test indicated that the experimental data fit well with Langmuir model and the maximum adsorption capacity () of Fe-GAC for As(V) was , which was higher than GAC (). In column test, the simulated water, which consisted of As(V), Fe(III), Mn(II) and Ca(II) in tap water, was used. Fe-GAC column with 1 hr of pre-washing time treated As(V) effectively while GAC column removed Fe(III) better than Fe-GAC column. Moreover, the increasing pre-washing time from 1 to 9 hour in Fe-GAC column enhanced Fe(III) removal with little negative impact of As(V) removal. Mostly, the column filled with Fe-GAC and GAC (i.e. the mass ratio of Fe-GAC:GAC
Adsorption;Arsenate;Fe-GAC;Fe-GAC + GAC column;Iron;
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