Adsorption of heavy metal ions onto a surface treated with granular activated carbon activated carbon fibers

강광철; 권수한; 김승수; 최종원; 전관식

오늘 하루 그만보기

P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.19, No.4

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Adsorption of heavy metal ions onto a surface treated with granular activated carbon activated carbon fibers

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2006, v.19 no.4, pp.285-289

& (2006). Adsorption of heavy metal ions onto a surface treated with granular activated carbon activated carbon fibers. , 19(4), 285-289.

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Abstract

In this study, the effect of an acidic treatment on granular activated carbon (GAC) and activated carbon fibers (ACF) was investigated for a $Pb^{2+}$ and $Ni^{2+}$ ion adsorption. 1.0 M nitric acid solution was used as the acid solution for the surface treatment. Surface properties of the GAC and ACF were characterized by the pH, elemental analysis and pHpzc (pH of the point of zero charge). Their specific surface area and the pore structure were also evaluated by the nitrogen adsorption data at 77K. As a result, the acidic treatment led to an increase of the oxygen-containing functional groups. Furthermore, the adsorption capacity of the acid-treated GAC and ACF was improved in the order of acidic-ACF > untreated-ACF > acidic-GAC > untreated-GAC, though the decrease in specific surface area induced by a pore blocking of the functional groups was observed.