Yellow phosphorus process to convert toxic chemicals to non-toxi

Details Yellow phosphorus process to convert toxic chemicals to non-toxi Yellow phosphorus process to convert toxic chemicals to non-toxi

1992-01-13

1994-07-26

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Organic component

423236, 42324303, 4232452, 423318, 423581, 210760, B01J 800, C10H 2300, C01C 300, C01B 2516

Patent

active

053325630

ABSTRACT:
The present invention relates to a process for generating reactive species for destroying toxic chemicals. This process first contacts air or oxygen with aqueous emulsions of molten yellow phosphorus. This contact results in rapid production of abundant reactive species such as O, O.sub.3, PO, PO.sub.2, etc. A gaseous or liquid aqueous solution organic or inorganic chemicals is next contacted by these reactive species to reduce the concentration of toxic chemical and result in a non-toxic product. The final oxidation product of yellow phosphorus is phosphoric acid of a quality which can be recovered for commercial use. A process is developed such that the byproduct, phosphoric acid, is obtained without contamination of toxic species in liquids treated. A gas stream containing ozone without contamination of phosphorus containing species is also obtained in a simple and cost-effective manner. This process is demonstrated to be effective for destroying many types of toxic organic, or inorganic, compounds, including polychlorinated biphenyls (PCB), aromatic chlorides, amines, alcohols, acids, nitro aromatics, aliphatic chlorides, polynuclear aromatic compounds (PAH), dyes, pesticides, sulfides, hydroxyamines, ureas, dithionates and the like.

REFERENCES:
patent: 5106601 (1992-04-01), Chang et al.
patent: 5164167 (1992-11-01), Chang et al.

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