Cdg Environmental, LLC

Cdg Technology, Inc.

The United States of America, As Represented by the Secretary, Department of Health and Human Services

Cdic, Inc.

Cdg Research Corporation

Thomas Ellsworth McWhorter

Aaron Rosenblatt

Madhu Anand

John Peter Hobbs

Barzin Keramati

Robert Shay

Peter Kazlas

Dale Genther

David Rosenblatt

Katarina Georgiev

Murray L Cohen

Theodore J Traum

Nicholas Franco

Katherine K Lock

Keith Muller

Deborah E Wilson

Mark Massar

Stable, aqueous solutions of chlorine dioxide and methods for producing stable, aqueous solutions of chlorine dioxide are disclosed. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 1000 ppm by weight or less of total impurities and/or 10 ppm or less of manganese and iron combined. The aqueous chlorine dioxide solutions are storage stable for at least 90 days at 25&#xb0; C. and maintain at least 75% of the initial chlorine dioxide concentration. Methods of preparing, using and transporting the chlorine dioxide solutions are also disclosed.

Storage-stable aqueous solutions of chlorine dioxide and methods for preparing and using them

New methods are disclosed for decontaminating surfaces and enclosures that avoid problems such as salt deposits, corrosion and condensation that accompany the use of known methods. The methods involve the use of chlorine dioxide solutions prepared by passing dilute chlorine gas over solid granular sodium chlorite to produce chlorine dioxide gas which is then collected to form a solution with very low levels of impurities. The chlorine dioxide gas can be introduced into an enclosure and used to disinfect a portion of the contents of the enclosure.

Use of storage-stable aqueous solutions of chlorine dioxide to generate pure chlorine dioxide gas for decontamination

The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepared by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chloride and contacting the resulting chlorine dioxide gas with a liquid.

The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepared by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.

The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.

The present disclosure relates to the decontamination of articles contaminated (or thought to be contaminated) with bioweapons, such as methods and apparatus for decontaminating articles contaminated with sporualated bioweapons. In some embodiments, the methods are methods of decontaminating an environment, for example a room or building contaminated with a bioweapon.

Method and apparatus for bioweapon decontamination

Method for producing stable sodium chlorite by pelletization of granular sodium chlorite with metal salt or salts forming hydrates with water of hydration in the pellets being more than 5% of the anhydrous weight of the sodium chlorite. Pelletized sodium chlorite can be used to produce chlorine dioxide gas by passing a dilute mixture of chlorine gas and an inert gas through a bed of the pellets.

Process for manufacturing and using a more stable formulation of sodium chlorite

Raw water is treated with chlorine, chlorine dioxide and ammonia in various stages as it proceeds from raw water acquisition through clarification (e.g., coagulation, flocculation, sedimentation, and filtration) to storage of finished water from which the treated water can be introduced into a distribution system. Chlorine dioxide can be used as a pre-oxidant or disinfectant. Chlorine can be used as a disinfectant or to react with ammonia to produce monochloramine.

Methods of treating water using combinations of chlorine dioxide, chlorine and ammonia

Method and apparatus for detecting the presence of or removing chlorine in a gaseous product stream from a chlorine dioxide generator by mixing gaseous ammonia or ammonia vapors with the product stream and either observing smoke generated by the reaction of ammonia with any chlorine present in the chlorine dioxide product stream or separating reaction products from the chlorine dioxide.

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Allentown, PA, United States of America

Thomas Ellsworth McWhorter