Chemtreat, Inc.

William H Henderson

Vladimir Djukanovic

John Richardson

Nicholas Seymour

John K Burchtorf

Patrick Wood

Oleh Weres

Daniel Marsh

Megan Pettygrove

Robert Jeffers

A method of suppressing corrosion of a corrodible metal surface that contacts a fluid stream in a hydrocarbon system. The method includes introducing into the fluid stream a treatment chemistry including an organometallic corrosion inhibitor having a metal and an organic carboxylic acid. The organometallic corrosion inhibitor is hydrocarbon soluble and the metal is released from the organometallic corrosion inhibitor in the presence of water or HS.

Dual mode corrosion inhibitor for hydrocarbon processes

A method of treating water to remove selenium and/or mercury that is dissolved in the water. The method includes adding an acid to the water to reduce the pH, adding a metal reagent to the water that is effective to reduce the selenium and/or mercury to a lower oxidation state, and then removing the reduced selenium and/or mercury from the water.

Methods of treating water to remove selenium or mercury

A method for treating water to remove a target analyte that includes adding to the water a rare earth metal salt and a coagulant, and then removing the target analyte from the water. The treatment composition can be added as a blend that includes die coagulant and the rare earth metal salt.

Enhanced inorganic coagulants for wastewater treatment

A method for determining the lignin or lignin by-product content of a process stream includes measuring the fluorescence parameter of a fluorescence spectra of the process stream, comparing the measured fluorescence parameter with predetermined a fluorescence parameter of lignin or lignin by-product reference samples, determining the amount of lignin or lignin by-product based on the comparison with the reference samples. Lignin or lignin by-products can then be removed from a process stream by adding a sufficient amount of a compound suitable for precipitating the lignin or lignin by-product to the process stream, and removing the precipitated lignin or lignin by-product from the process stream.

Methods for monitoring and controlling contaminants in food processing systems

Methods and compositions for inhibiting corrosion of metal surfaces in aggressive fluids, including fluids with high total dissolved solids content. The treatment composition can include a stannous corrosion inhibitor and optionally an additive that enhances the corrosion inhibition properties of the stannous component. The additive may include organic compounds having at least one heteroatom.

Corrosion inhibition treatment for aggressive fluids

Methods and systems are described for providing improved food processing systems by treating wash water in a wash stage of the food processing system with a biocide. Sufficient biocide may be added to significantly reduce the levels of bacteria in the wash stage, which can prevent problems associated with bacteria in downstream processes.

Sanitary food washing stage in food production

Methods are disclosed for treating water containing a target anion to remove the target anion. The methods can include preparing a treatment composition solution that contains a metal treatment agent, adjusting the treatment composition solution to a first pH that is alkaline and then to a second pH that is acidic, and contacting the treatment composition solution with the water that contains the target anion.

Methods for removing anions from water

Methods for removing a target selenium entity from fluids by treating the fluid with a rare earth impregnated media containing an immobilized rare earth. The methods including obtaining a contaminated fluid comprising water and dissolved selenate; contacting the feed fluid with a rare earth impregnated media for removal of at least a portion of the selenate from the feed fluid thereby forming a treated fluid comprising less selenium than the feed fluid.

Compositions and methods for selenium removal

Methods for removing a target anion entity, such as a phosphate ion, from fluids by treating the fluid with a substrate containing an immobilized rare earth, the substrate being either a first loaded substrate including a first immobilized cationic rare earth, the first loaded substrate being formed by precipitating a rare earth in a clay such that the rare earth is fixed inside a porous structure of the clay and/or fixed on the surface of the clay; or a second loaded substrate comprising a second immobilized cationic rare earth that is bonded to the second loaded substrate via a chelating ligand.

Compositions and methods for selective anion removal

Disclosed are methods of synthesizing triazoles that avoids the use of concentrated acids in favor of carbonic acid generated from COthat can be practiced at ambient and/or elevated temperature and/or atmospheric and/or elevated pressures. The disclosed methods also provide a way of synthesizing triazole products that are sufficiently pure and/or of sufficient concentration whereby the reaction product(s) may not require purification or other treatment before being used in, for example, formulating water treatment compositions that will tend to suppress corrosion or as an intermediate product in a more complex synthesis.

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Glen Allen, VA, United States of America

William H Henderson