Selective adsorption of uranium from aqueous solutions using activated carbon prepared from charcoal by chemical activation

Activated carbon was prepared from charcoal by chemical activation in this study. The preparation process consisted of zinc chloride impregnation followed by carbonization. The carbonization temperature ranges from 500 to 700°C for 1h. Activated carbon produced from charcoal has been shown to be a g...

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Bibliographic Details
Published in:Separation and purification technology 2004-12, Vol.40 (2), p.109-114
Main Authors: Kütahyalı, Ceren, Eral, Meral
Format: Article
Language:English
Subjects:
Activated carbon
Adsorption
Adsorption properties
Applied sciences
Charcoal
Chemical engineering
Exact sciences and technology
Pollution
Radioactive wastes
Wastes
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Summary:Activated carbon was prepared from charcoal by chemical activation in this study. The preparation process consisted of zinc chloride impregnation followed by carbonization. The carbonization temperature ranges from 500 to 700°C for 1h. Activated carbon produced from charcoal has been shown to be a good adsorbent for uranium from liquid aqueous radioactive wastes. The adsorption of uranium was studied as a function of pH, concentration of adsorbate, shaking time, particle size, amount of adsorbent and temperature. ΔH° and ΔS° were calculated from the slope and intercept of plots of lnKD versus 1/T. The uranium adsorption efficiency was found as 92±4%. The influence of different cations on uranium adsorption has been examined.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2004.01.011