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Abstract
A range of basic activated carbons was prepared from single
cultivar Jordanian olive stones and their chemical composition, textural properties and surface groups investigated. One of the samples was de-ashed and then oxidized using concentrated nitric acid to study the effects of inorganic content and surface oxidation on its adsorption capacity towards 2 chlorophenol (2-CP).
Commercial samples with combined acidic and basic properties were also tested
with respect to 2-CP adsorption.
An attempt was made to correlate the total basicity with the adsorption constants of the Langmuir equation and with other properties. These properties
included burn-off, apparent surface area, micropore volume, total pore volume
and Methylene Blue (MB) adsorption surface area. The total basicity had no
relationship with any adsorption parameter. However, total basicity was found to
have a relationship with the total pore volume, the micropore volume, MB
adsorption and burn-off. The BET surface area showed only a very weak relationship with the total basicity. Burn-off had a relationship with the relative
affinity of the adsorbate and the surface and Langmuir constants, but not with
the adsorption capacity. De-ashing the sample using HF/HCl decreased the total
basicity and MB adsorption but increased the total acidity and the capacity
towards 2-CP uptake. The mineral contents of both prepared and commercial
samples were analyzed and found to play no role in the adsorption of 2-CP.
cultivar Jordanian olive stones and their chemical composition, textural properties and surface groups investigated. One of the samples was de-ashed and then oxidized using concentrated nitric acid to study the effects of inorganic content and surface oxidation on its adsorption capacity towards 2 chlorophenol (2-CP).
Commercial samples with combined acidic and basic properties were also tested
with respect to 2-CP adsorption.
An attempt was made to correlate the total basicity with the adsorption constants of the Langmuir equation and with other properties. These properties
included burn-off, apparent surface area, micropore volume, total pore volume
and Methylene Blue (MB) adsorption surface area. The total basicity had no
relationship with any adsorption parameter. However, total basicity was found to
have a relationship with the total pore volume, the micropore volume, MB
adsorption and burn-off. The BET surface area showed only a very weak relationship with the total basicity. Burn-off had a relationship with the relative
affinity of the adsorbate and the surface and Langmuir constants, but not with
the adsorption capacity. De-ashing the sample using HF/HCl decreased the total
basicity and MB adsorption but increased the total acidity and the capacity
towards 2-CP uptake. The mineral contents of both prepared and commercial
samples were analyzed and found to play no role in the adsorption of 2-CP.
| Original language | English |
|---|---|
| Pages (from-to) | 451-465 |
| Number of pages | 15 |
| Journal | Adsorption Science and Technology |
| Volume | 22 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jul 2004 |
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Dive into the research topics of 'The use of Activated Carbon of Basic Properties for Treatment of 2-Chlorophenol'. Together they form a unique fingerprint.Projects
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Development of low cost adsorbents derived from waste materials
Newman, A. P., El-Sheikh, A. H. & Hollyoak, B.
2/09/02 → …
Project: Unfunded project
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