Linda L Szafraniec

60177500, Jan 25, 2000

Nov 12, 1998

9/197538

Steven P. Harvey - Fallston MD
Linda L. Szafraniec - Bel Air MD
William T. Beaudry - Bel Air MD

The United States of America as represented by the Secretary of the Army - Washington DC

B09B 300

4352625

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.

56782438, Oct 14, 1997

Sep 12, 1996

8/711840

Yu-Chu Yang - Bel Air MD
John B. Samuel - Bel Air MD
William T. Beaudry - Bel Air MD
Linda L. Szafraniec - Bel Air MD
Dennis K. Rohrbaugh - Bel Air MD

The United States of America as represented by the Secretary of the Army - Washington DC

A62D 300

588200

A process for the detoxification or decontamination of aminoalkyl phosphonothiolates and more particularly, the chemical warfare agent VX and its analogs. The process comprises adding water to the chemical agent so that an hydrolysis reaction of the chemical agent with water occurs at specified molar ratios. In a preferred embodiment, the detoxification process is carried out in situ within the chemical agent storage containers in the field and includes mixing the contents of the container after adding the water. The mixing may be accomplished by shaking, rolling, tumbling or pumping.

57103585, Jan 20, 1998

Jul 8, 1996

8/687065

Yu-Chu Yang - Bel Air MD
John B. Samuel - Bel Air MD
William T. Beaudry - Bel Air MD
Linda L. Szafraniec - Bel Air MD
Clifford A. Bunton - Santa Barbara CA

The United States of America as represented by the Secretary of the Army - Washington DC

A62D 300

588200

A method for detoxifying substituted and unsubstituted phosphonothiolates and phosphonothioic acids. The method requires reacting the phosphonothiolate or phosphonothioic acid with a sufficient amount of a compound containing an HSO. sub. 5 -ion, for a sufficient time and under conditions sufficient to produce a reaction product having less toxicity than the phosphonothiolate or phosphonothioic acid. The preferred compound containing an HSO. sub. 5 -ion is potassium monopersulfate, 2KHSO. sub. 5. KHSO. sub. 4. K2S0. sub. 4.