Tobacco – Tobacco treatment – Extraction of component – other than moisture – by contact...
Patent
1981-03-05
1982-12-21
Millin, V.
Tobacco
Tobacco treatment
Extraction of component, other than moisture, by contact...
131298, A24B 318, A24B 1518, A24B 1522, A24B 1524
Patent
active
043644015
ABSTRACT:
A process for selectively denitrating tobacco by electrodialysis to thereby reduce the delivery of various gas phase components, during combustion of tobacco products is disclosed. The process comprises forming an aqueous tobacco extract, separating the extract from the fibrous tobacco portion, selectively denitrating the extract and reapplying the denitrated extract to a fibrous tobacco portion. Denitration of the extract is effected by circulating the extract through those cells of an electrodialysis unit having anion permeable membrane towards both anode and cathode, said extract cells being paired on their anode side with brine cells which have a cation permeable membrane toward the anode. The cell pairs are separated by cells through which an acid is circulated. Smoking products containing tobacco treated in accordance with the invention exhibit reduced delivery of nitrogen oxides during combustion.
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Millin V.
Palmer, Jr. Arthur I.
Philip Morris Incorporated
Schardt James E.
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