Mineral oils: processes and products – Refining – Halogen contaminant removal
Patent
1990-11-30
1991-11-12
Myers, Helane E.
Mineral oils: processes and products
Refining
Halogen contaminant removal
2082621, 208 13, 210909, 134 10, 134 26, 134 27, 134 28, 134 42, 423659, 423DIG20, 502 25, 502 27, 502515, C10G 1700
Patent
active
050645269
ABSTRACT:
A method for the decomposition of halogenated and non-halogenated organic contaminant compounds contained in a contaminated medium comprises adding an alkali or alkaline earth metal carbonate, bicarbonate or hydroxide to the contaminated medium in an aqueous solution or in a solvent having a boiling point of at least 200.degree. C., or in the form of a solid dispersion or suspension. The medium includes a hydrogen donor compound. The hydrogen donor compound may be originally contained in the medium or may be added to the medium. The medium further includes a catalytic source of carbon, for example, a carabohydrate, which will cause formation of a free radical hydrogen ion from the hydrogen donor compound. The medium is heated to dehydrate the medium and then is further heated at a temperature between about 200.degree. and 400.degree. C. to cause formation of the free radical hydrogen ion and effect reductive decomposition of the halogenated and non-halogenated organic contaminant compounds. An acid is then added to the medium in an amount sufficient to neutralize the same.
REFERENCES:
patent: 4246255 (1981-12-01), Grantham
patent: 4327027 (1982-04-01), Howard
patent: 4337368 (1982-06-01), Pytlewski et al.
patent: 4349380 (1982-09-01), Pytlewski et al.
patent: 4351718 (1982-09-01), Brunelle
patent: 4353793 (1982-10-01), Brunelle
patent: 4400552 (1983-08-01), Pytlewski
patent: 4417977 (1983-11-01), Pytlewski et al.
patent: 4430208 (1984-02-01), Pytlewski et al.
patent: 4447541 (1984-05-01), Peterson
patent: 4460797 (1984-07-01), Pytlewski et al.
patent: 4471143 (1984-09-01), Pytlewski et al.
patent: 4483716 (1984-10-01), Heller
patent: 4523043 (1985-01-01), Pytlewski et al.
patent: 4574013 (1986-03-01), Peterson
patent: 4602994 (1986-06-01), Pytlewski et al.
patent: 4631183 (1986-12-01), Lalancette et al.
patent: 4663027 (1987-05-01), Mendiratta
patent: 4675464 (1987-06-01), Rogers et al.
patent: 4685220 (1987-08-01), Meenan
patent: 4761221 (1988-08-01), Rossi
patent: 4792407 (1988-12-01), Zeff et al.
patent: 4793937 (1988-12-01), Meenan
patent: 4801384 (1989-01-01), Steiner
patent: 4841998 (1989-06-01), Bruya
patent: 4869825 (1989-09-01), Steiner
Chemical Abstracts, vol. 82, No. 139620p (1975).
Kornel et al., Journal of Hazardous Materials, 12 (1985), pp. 161-176.
Kornel Alfred
Rogers Charles J.
Sparks Harold L.
Myers Helane E.
The United States of America as represented by the Administrator
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