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Utilization of Arachis hypogaea hull, an agricultural waste for the production of activated carbons to remove phenol from aqueous solutions.
- Source :
-
Journal of Environmental Science & Health. Part B. Pesticides, Food Contaminants & Agricultural Wastes . Jun2008, Vol. 43 Issue 5, p452-463. 12p. 1 Diagram, 1 Chart, 10 Graphs. - Publication Year :
- 2008
-
Abstract
- Arachis hypogaea hulls, an agricultural waste, were used to prepare activated carbon by chemical activation with zinc chloride under four different activation atmospheres. The most important parameter in chemical activation was found to be the chemical ratio (activating agent/precursor). Carbonization temperature and time are the other two important variables, which had significant effect on the pore structure of carbon. The maximum Brunquer-Emmett-Teller (BET) surface area and micropore volume of the activated carbon was found to be 418 m2/g and 0.28 cm3/g, respectively. The activated carbon developed shows substantial capability to adsorb phenol from aqueous solutions. The kinetic data were fitted to the models of intraparticle diffusion, pseudo-second-order, and Lagergren, and followed more closely the pseudo-second-order chemisorption model. The isotherm equilibrium data were well fitted by the Langmuir and Freundlich models. Solution pH has significant effect on adsorption and the maximum uptake of phenol was reported at pH 3.5. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PEANUTS
*AGRICULTURAL wastes
*ACTIVATED carbon
*PHENOL
*ZINC chloride
*DIFFUSION
Subjects
Details
- Language :
- English
- ISSN :
- 03601234
- Volume :
- 43
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Science & Health. Part B. Pesticides, Food Contaminants & Agricultural Wastes
- Publication Type :
- Academic Journal
- Accession number :
- 32771492
- Full Text :
- https://doi.org/10.1080/03601230802062323