Method for electrolytic denitration of tobacco

Details Method for electrolytic denitration of tobacco Method for electrolytic denitration of tobacco

1980-12-16

1981-11-24

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204301, 131298, B01D 1302

Patent

active

043023088

ABSTRACT:
An improved process for denitrating tobacco with minimal losses of desirable tobacco solubles employing electrodialysis is disclosed. The process comprises subjecting an aqueous tobacco extract to membrane electrodialysis such that nitrate salts are extracted, without substantial loss of desirable tobacco solubles, while minimizing conflicting reactions in the electrodialysis unit and prolonging membrane life. Conflicting reactions are reduced and membrane life is enhanced by isolation of the electrodes to prevent electrolysis in the extract and brine by use of an anion permeable membrane adjacent the cathode and by use of a catholyte, the anion of which forms soluble salts with polyvalent cations. The denitrated extract when combined with denitrated insoluble fibrous tobacco materials may be employed to produce tobacco products having reduced nitrogen oxide delivery.

REFERENCES:
patent: 3493488 (1970-02-01), Sisk
patent: 3616801 (1971-11-01), Hind
patent: 3645884 (1972-02-01), Gilliland
patent: 3686089 (1972-08-01), Korngold et al.
patent: 3755135 (1973-08-01), Johnson
patent: 3847164 (1974-11-01), Mattina et al.
patent: 3869376 (1975-03-01), Tejeda
patent: 4131117 (1978-12-01), Kite et al.
patent: 4131118 (1978-12-01), Gellatly et al.

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