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Title: Yellow phosphorus process to convert toxic chemicals to non-toxic products

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.

Inventors:
 [1]
  1. (El Cerrito, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
869405
Patent Number(s):
5332563
Assignee:
Regents of University of California (Oakland, CA) LBNL
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
yellow; phosphorus; process; convert; toxic; chemicals; non-toxic; products; relates; generating; reactive; species; destroying; contacts; air; oxygen; aqueous; emulsions; molten; contact; results; rapid; production; abundant; etc; gaseous; liquid; solution; organic; inorganic; contacted; reduce; concentration; chemical; result; product; final; oxidation; phosphoric; acid; quality; recovered; commercial; developed; byproduct; obtained; contamination; liquids; treated; gas; stream; containing; ozone; simple; cost-effective; manner; demonstrated; effective; types; compounds; including; polychlorinated; biphenyls; pcb; aromatic; chlorides; amines; alcohols; acids; nitro; aromatics; aliphatic; polynuclear; pah; dyes; pesticides; sulfides; hydroxyamines; ureas; dithionates; yellow phosphorus; aromatic compound; liquid aqueous; polychlorinated biphenyl; aromatic compounds; gas stream; aqueous solution; phosphoric acid; stream containing; polychlorinated biphenyls; reactive species; toxic chemicals; rapid production; oxidation product; containing species; toxic organic; active species; polynuclear aromatic; organic chemical; non-toxic products; organic chemicals; non-toxic product; toxic chemical; aqueous emulsion; contacts air; cost-effective manner; /423/210/

Citation Formats

Chang, Shih-Ger. Yellow phosphorus process to convert toxic chemicals to non-toxic products. United States: N. p., 1994. Web.
Chang, Shih-Ger. Yellow phosphorus process to convert toxic chemicals to non-toxic products. United States.
Chang, Shih-Ger. Sat . "Yellow phosphorus process to convert toxic chemicals to non-toxic products". United States. https://www.osti.gov/servlets/purl/869405.
@article{osti_869405,
title = {Yellow phosphorus process to convert toxic chemicals to non-toxic products},
author = {Chang, Shih-Ger},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

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