Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells
Activated carbons (ACs) were prepared from apricot stone shells impregnated with H 3 PO 4 , followed by carbonization at 400–500°C. Fixed-bed removal of two dyestuffs, i.e. Direct Red 99 (DR) and Reactive Orange 11 (RO) was followed at constant bed height and flow rate. Several column characteristic...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
1998-05-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749801600507 |
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| author | Laila B. Khalil Badie S. Girgis |
| author_facet | Laila B. Khalil Badie S. Girgis |
| author_sort | Laila B. Khalil |
| collection | DOAJ |
| description | Activated carbons (ACs) were prepared from apricot stone shells impregnated with H 3 PO 4 , followed by carbonization at 400–500°C. Fixed-bed removal of two dyestuffs, i.e. Direct Red 99 (DR) and Reactive Orange 11 (RO) was followed at constant bed height and flow rate. Several column characteristics were evaluated from the breakthrough curves obtained including: the volume and loading at breakpoint, the height of the mass transfer zone, the bed service time, the time and loading at exhaustion, and the fractional bed loadings at various stages. The bed performance with RO was better than for DR, which was ascribed to a screening effect towards the larger DR molecules and to enhanced adsorption arising from the polyhalogenated nature of the RO molecule. The removal of colour was favoured as the porosity of the AC developed, being particularly related to its mesoporosity and total pore volume. |
| format | Article |
| id | doaj-art-c5794c9dc5ae48839e439b3f3f0b0c67 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 1998-05-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-c5794c9dc5ae48839e439b3f3f0b0c672025-02-03T10:07:33ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40381998-05-011610.1177/026361749801600507Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone ShellsLaila B. KhalilBadie S. GirgisActivated carbons (ACs) were prepared from apricot stone shells impregnated with H 3 PO 4 , followed by carbonization at 400–500°C. Fixed-bed removal of two dyestuffs, i.e. Direct Red 99 (DR) and Reactive Orange 11 (RO) was followed at constant bed height and flow rate. Several column characteristics were evaluated from the breakthrough curves obtained including: the volume and loading at breakpoint, the height of the mass transfer zone, the bed service time, the time and loading at exhaustion, and the fractional bed loadings at various stages. The bed performance with RO was better than for DR, which was ascribed to a screening effect towards the larger DR molecules and to enhanced adsorption arising from the polyhalogenated nature of the RO molecule. The removal of colour was favoured as the porosity of the AC developed, being particularly related to its mesoporosity and total pore volume.https://doi.org/10.1177/026361749801600507 |
| spellingShingle | Laila B. Khalil Badie S. Girgis Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells Adsorption Science & Technology |
| title | Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells |
| title_full | Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells |
| title_fullStr | Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells |
| title_full_unstemmed | Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells |
| title_short | Column Removal of Some Dyestuffs by Activated Carbons Derived from Apricot Stone Shells |
| title_sort | column removal of some dyestuffs by activated carbons derived from apricot stone shells |
| url | https://doi.org/10.1177/026361749801600507 |
| work_keys_str_mv | AT lailabkhalil columnremovalofsomedyestuffsbyactivatedcarbonsderivedfromapricotstoneshells AT badiesgirgis columnremovalofsomedyestuffsbyactivatedcarbonsderivedfromapricotstoneshells |