Journal
JOURNAL OF POROUS MATERIALS
Volume 15, Issue 5, Pages 535-540Publisher
SPRINGER
DOI: 10.1007/s10934-007-9129-z
Keywords
oil palm solid waste; activated carbon; CO(2) activation; pore structure; surface chemistry; adsorption
Funding
- Program for New Century Excellent Talents in University [NCET-05-0681]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars [2005-383]
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Feasibility of producing activated carbons by utilizing solid wastes (extracted flesh fibre and seed shell) from palm oil processing mills was investigated. The effects of activation conditions (CO(2) flow rate, activation temperature and retention time) on the characteristics of the activated carbons, i.e. density, porosity, BET surface area, pore size distribution and surface chemistry were studied. In this study, the optimum conditions for activation were an activation temperature of 800 degrees C and a retention time of 30 min for fiber or 50 min for shell, which gave the maximum BET surface area. Pore size distribution revealed that the shell-based activated carbons were predominantly microporous whilst fiber activated carbon had predominant mesopores and macropores, suggesting the application of shell and fiber activated carbon as adsorbents for gas-phase and liquid-phase adsorption, respectively. This was confirmed by further gas- and liquid-phase adsorption tests.
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