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Method of manipulating the chemical properties of water to improve the effectiveness of a desired process

United States Patent

March 5, 2002
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
The method of the present invention is adapted to manipulate the chemical properties of water in order to improve the effectiveness of a desired process. The method involves heating the water in the vessel to subcritical temperatures between to C. while maintaining sufficient pressure to the water to maintain the water in the liquid state. Various physiochemical properties of the water can be manipulated including polarity, solute solubility, surface tension, viscosity, and the disassociation constant. The method of the present invention has various uses including extracting organics from solids and semisolids such as soil, selectively extracting desired organics from liquids, selectively separating organics using sorbent phases, enhancing reactions by controlling the disassociation constant of water, cleaning waste water, removing organics from water using activated carbon or other suitable sorbents, and degrading various compounds.
Hawthorne; Steven B. (Grand Forks, ND), Miller; David J. (Grand Forks, ND), Lagadec; Arnaud Jean-Marie (Grand Forks, ND), Hammond; Peter James (York, GB), Clifford; Anthony Alan (Leeds, GB)
Energy & Environmental Research Center Foundation (Grand Forks, ND)
09/ 441,872
November 17, 1999
GRANT REFERENCE This invention was developed with government support under U.S. Department of Energy Cooperative Agreement Nos. DE- and DE-FC21-94MC31388, thus the government may have certain rights in this invention.