Hydrolysis and biodegradation of the chemical warfare vesicant a

Details Hydrolysis and biodegradation of the chemical warfare vesicant a Hydrolysis and biodegradation of the chemical warfare vesicant a

1998-11-12

2000-01-25

Redding, David A.

Chemistry: molecular biology and microbiology

Process of utilizing an enzyme or micro-organism to destroy...

Destruction of hazardous or toxic waste

588200, 588215, 588238, B09B 300

Patent

active

060177500

ABSTRACT:
A process for the detoxification or demilitarization of the chemical warf agent HT, a mixture of 2,2'-dichlorodiethyl sulfide and bis-(2-(2-chloroethylthio)ethyl) ether, is disclosed. The process includes 1) treating HT with a hydrolyzing agent to form a mixture of thiodiglycol (TDG) and bis-(2-(2-hydroxyethylthio)ethyl) ether(s?) (T-OH); 2) neutralizing the TDG and T-OH mixture to a pH sufficient for biodegradation of the mixture; and biodegrading the neutralized TDG and T-OH mixture. In preferred embodiments, the hydrolyzing agent is water and the neutralizing is carried out with NAOH. Biodegradation is preferably carried out with a sequential batch reactor.

REFERENCES:
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patent: 5399495 (1995-03-01), Patt et al.
patent: 5474934 (1995-12-01), Adamus et al.
patent: 5550311 (1996-08-01), Young
patent: 5574202 (1996-11-01), Pilipski
patent: 5750364 (1998-05-01), Salanito

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