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✦   LIBER   ✦

The adsorption of methylene blue by active carbon

✍ Scribed by Stuart S. Barton

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
719 KB
Volume
25
Category
Article
ISSN
0008-6223

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✦ Synopsis

The extent of adsorption of methylene blue from an aqueous solution is a convenient indicator in the evaluation of active carbons. The adsorption process is, however, complicated by factors inherent in the structures of both the methylene blue solution and the active carbon. These factors include the tendency of methylene blue to form molecular aggregates in solution, molecular sieving imposed by the pore size distribution of the carbon and the heterogeneous nature of the energies of adsorption sites. Temperature variation of adsorption and calorimetric experiments show, however, that the results obtained can be rationalized on the basis of these structural factors and the kinetic effects which result from them.

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