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- Title
The Adsorption Efficiency of Chemically Prepared Activated Carbon from Cola Nut Shells by ZnCl<sub>2</sub> on Methylene Blue.
- Authors
Nsami, Julius Ndi; Mbadcam, Joseph Ketcha
- Abstract
The adsorption of methylene blue from aqueous solution onto activated carbon prepared from cola nut shell has been investigated under batch mode. The influence of major parameters governing the efficiency of the process such as, solution pH, sorbent dose, initial concentration, and contact time on the removal process was investigated. The time-dependent experimental studies showed that the adsorption quantity of methylene blue increases with initial concentration and decreasing adsorbent dosage. The equilibrium time of 180 min was observed and maximum adsorption was favoured at pH 3.5. The dye removal using 0.1 g of adsorbent was more than 90%. This dosage (0.1 g) was considered as the optimum dosage to remove methylene blue from aqueous solutions. The equilibrium adsorption data were analyzed by the Freundlich, Langmuir adsorption isotherm models. The kinetics of methylene blue solution was discussed by pseudo-first-order, pseudo-second-order, and Elovich models. The adsorption process follows the Elovich rate kinetic model, having a correlation coefficient in the range between 0.9811 and 1.
- Subjects
ACTIVATED carbon; ADSORPTION (Chemistry); KOLA nuts; NUCULIDAE; ZINC chloride; METHYLENE blue; SOLUTION (Chemistry)
- Publication
Journal of Chemistry, 2013, p1
- ISSN
2090-9063
- Publication type
Article
- DOI
10.1155/2013/469170