M. Fujita et al., EFFECT OF ALCOHOL ADDITION ON DECOMPOSITION OF CHLOROFLUOROCARBONS (CFCS) UNDER ALCOHOLIC ALKALINE HYDROTHERMAL CONDITIONS, Nippon kagaku kaishi, (8), 1998, pp. 566-568
Effect of some kinds of alcohol addition to alkali solvent on hydrothe
rmal decompositions of various kind of halogenated carbons such as chl
orofluorocarbons (CFCs) with 1-4 carbons was investigated. We have alr
eady reported the perfect decomposition of the CFCs under methanolic a
lkaline hydrothermal treatment at lower temperature compared to superc
ritical water oxidation (SCWO) process. Here, in order to clarify the
effect of alcohol addition to solvent, the relation of concentration o
f halogenide ion and organic ions were investigated. Furthermore the o
rganic carbons mere analyzed by C-13-NMR to confirm the origin of the
carbon whether from the oxidation of added alcohol or from the transfo
rmation of starting CFCs, It was revealed that the carbon-halogen bond
ings can be completely dehalogenated and the halogenide ions were rele
ased into the aqueous solution and can neutralize with alkali therefor
e, the perfect process for the elimination of the toxicity should be p
ossible in the hydrothermal treatment.