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'Improvements in the object of the principal patent No. 503,050, filed 15 June 1981: a process for recovering caffeine from activated carbon'.
'Improvements in the object of the principal patent No. 503,050, filed 15 June 1981: a process for recovering caffeine from activated carbon'.
The recovery of caffeine from activated carbon is accomplished according to the present invention by employing an aqueous acetic acid solution, preferably having a concentration of between about 50 and 80% by weight, and which is capable of competing for the active sites on the carbon occupied by the caffeine to displace at least a portion of the caffeine which is then dissolved in the solvent. After the desired period of contact, preferably at a temperature above 100 DEG C, the caffeine is separated from the solution.
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