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Environmental Technology Volume 13, 1992 - Issue 2
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Original Articles

Oxygen‐induced enhancement of the adsorpttve capacity of activated charcoal

G. Nakhla Department of Civil Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
,
N. Abu‐Zaid Department of Civil Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
,
S. Farooq Department of Civil Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
&
S. Ala'ama Department of Civil Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
Pages 181-188 | Received 12 Jul 1991, Accepted 31 Oct 1991, Published online: 17 Dec 2008
 
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Abstract

Adsorption isotherms for phenol and o‐cresol on activated charcoal at neutral pH and several dissolved oxygen concentrations were conducted at 23°C. Significant improvement in capacities were observed with increasing dissolved oxygen concentrations for the two adsorbates. These statistically‐significant additional capacities were not due to biological activities but merely due to surface chemical reactions. The improvement in capacity was directly related to the amount of oxygen per unit mass of GAC.

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