Fmc Corporation

Peroxychem LLC

Evonik Operations Gmbh

Evonik Active Oxygens, LLC

Philip A Block

Richard A Brown

Dalbir S Sethi

Elena Pisanova

David S Robinson

John M Rovison

Weidong An

Frank C Sessa

Angela Thompson

Timothy Holtz

Coryn Mittiga

Lawrence J Kinsman

Provided herein are methods and compositions for water disinfection. The methods and compositions, which can include a peracid and a source of copper ions, are useful for treatment of water contaminated with recalcitrant microbes.

Disinfection method for water and wastewater

The present invention is directed to a method of oxidizing an organic compound present in soil, groundwater, process water or wastewater comprising contacting such organic compound with a persulfate and an organic acid selected from the group consisting of ascorbic acid, formic acid, oxalic acid, lactic acid and citric acid, wherein the molar ratio of such organic acid to persulfate is between 1:100 and 3:1.

Organic acid activation of persulfates

The present invention is directed to a method for the treatment of an environmental medium contaminated with arsenic, comprising treating such medium with an effective amount of persulfate and zero valent iron.

Treatment of arsenic contaminated soil and water

A method for removing nitrogen oxides in stationary source combustion flue gas streams includes introducing a reagent or a mixture comprising carbamide peroxide and water as a reducing agent.

Treatment of nitrogen oxides in flue gas streams

An improved method and compositions for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a composition comprising a solid state, water soluble peroxygen compound and zero valent iron.

Oxidation of organic compounds

Organic compounds are removed from contaminated soil, ground water and the like by treatment with a combination of a water soluble peroxygen compound, such as sodium persulfate, and a pH modifier capable of maintaining a pH greater than about 10, such as a metal hydroxide.

Oxidation of organic compounds at high pH

Contaminants, such as volatile organic compounds, are removed from an environmental medium, such as contaminated soil, rock, groundwater, waste water and the like, by treatment with a combination of a persulfate, such as a sodium persulfate, and hydrogen peroxide.

Treatment of environmental contaminants

An improved method for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a peroxygen compound and a chelated transition metal.

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Chester Heights, PA, United States of America

Philip A Block