Lee, Mei Poh (2006) Development and characterization of activated carbon prepared from papaya seed by H3PO4 activation. Universiti Malaysia Sabah. (Unpublished)
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Abstract
Preparation of activated carbons from papaya seed, a carbonaceous agricultural waste product, with different impregnation ratio of H3P04 by using two-stage self-generated atmosphere method were studied. The papaya seeds were carbonized in a muffle furnace at a constant temperature of 200ºC for 15 min followed by activation at a desire temperature and time. Several physical and chemical characteristics (moisture, ash, pH, functional groups, surface structure and surface area) of prepared activated carbons were studied. Semi-carbonized at 200ºC for 15 min followed by activation at 500ºC for 45 min with impregnation ratio of 2.0 yielded a product with the highest BET surface area which was 895.7 m2gˉ¹. While the sample which prepared by semi-carbonization at 200ºC for 15 min followed by activation at 500ºC for 30 min with impregnation ratio of 1.5 yielded the highest micropores surface area and iodine number which were 822.8 m² gˉ¹ and 870 m² gˉ¹ respectively. Besides that, the methylene blue adsorption showed that all activated carbons fitted well in Langmuir model which yielded the qm between 53 mggˉ¹ and 97 mggˉ¹
| Item Type: | Academic Exercise |
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| Keyword: | Activated carbons, Papaya seed, Carbonaceous agricultural waste product |
| Subjects: | Q Science > QK Botany > QK1-989 Botany > QK474.8-495 Spermatophyta. Phanerogams > QK495 Angiosperms |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | ADMIN ADMIN |
| Date Deposited: | 07 Dec 2011 16:37 |
| Last Modified: | 12 Oct 2017 11:24 |
| URI: | https://eprints.ums.edu.my/id/eprint/517 |
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