Removal of cationic dye from water by activated pine cones
Adsorption of a cationic phenothyazine dye methylene blueonto activated carbon prepared from pine cones was investigated with the variation in parameters of contact time, dye concentration and pH. The kinetic data were found to follow the pseudo-second-order kinetic modelclosely. The equilibrium dat...
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Published in | Journal of the Serbian Chemical Society Vol. 77; no. 6; pp. 761 - 774 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Serbian Chemical Society
2012
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Subjects | |
Online Access | Get full text |
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Summary: | Adsorption of a cationic phenothyazine dye methylene blueonto activated
carbon prepared from pine cones was investigated with the variation in
parameters of contact time, dye concentration and pH. The kinetic data were
found to follow the pseudo-second-order kinetic modelclosely. The equilibrium
data were best represented by the Langmuir isotherm with maximum adsorption
capacity of 233.1 mg g-1. Adsorption was favored by using a higher solution
pH. Textural analysis by nitrogen adsorption was used to determine specific
surface area and pore structure of the obtained carbon. Boehm titrations
revealed that carboxylic groups are present in the highest degree on the
carbon surface. The results indicate that the presented method for activation
of pine cones could yield activated carbon with significant porosity,
developed surface reactivity and considerable adsorption affinity toward
cationic dye methylene blue.
nema |
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ISSN: | 0352-5139 1820-7421 |
DOI: | 10.2298/JSC110517162M |