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

Abstract

The method of the present invention is adapted to manipulate the chemical properties of water in order to improve the effectiveness of a desired chemical process. The method involves heating the water in the vessel to subcritical temperatures between 100.degree. to 374.degree. 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 nonaqueous liquids, selectively separating organics using sorbent phases, enhancing reactions by controlling the disassociation constant of water, cleaning waste water, and removing organics from water using activated carbon or other suitable sorbents.

Inventors:
 [1];  [1];  [2];  [1]
  1. Grand Forks, ND
  2. Greenville, NC
Issue Date:
Research Org.:
Univ. of North Dakota, Grand Forks, ND (United States)
OSTI Identifier:
872747
Patent Number(s):
6001256
Assignee:
Energy & Environmental Research Center (Grand Forks, ND)
Patent Classifications (CPCs):
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL
DOE Contract Number:  
FC21-93MC30097
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; manipulating; chemical; properties; water; improve; effectiveness; desired; process; adapted; manipulate; involves; heating; vessel; subcritical; temperatures; 100; degree; 374; maintaining; sufficient; pressure; maintain; liquid; various; physiochemical; manipulated; including; polarity; solute; solubility; surface; tension; viscosity; disassociation; constant; extracting; organics; solids; semisolids; soil; selectively; nonaqueous; liquids; separating; sorbent; phases; enhancing; reactions; controlling; cleaning; waste; removing; activated; carbon; suitable; sorbents; selectively extracting; selectively separating; sorbent phase; waste water; activated carbon; critical temperature; method involves; surface tension; aqueous liquid; chemical properties; sufficient pressure; chemical process; removing organic; maintaining sufficient; desired chemical; aqueous liquids; selectively extract; separating organic; method involve; involves heating; suitable sorbent; /210/

Citation Formats

Hawthorne, Steven B, Miller, David J, Yang, Yu, and Lagadec, Arnaud Jean-Marie. Method of manipulating the chemical properties of water to improve the effectiveness of a desired chemical process. United States: N. p., 1999. Web.
Hawthorne, Steven B, Miller, David J, Yang, Yu, & Lagadec, Arnaud Jean-Marie. Method of manipulating the chemical properties of water to improve the effectiveness of a desired chemical process. United States.
Hawthorne, Steven B, Miller, David J, Yang, Yu, and Lagadec, Arnaud Jean-Marie. Fri . "Method of manipulating the chemical properties of water to improve the effectiveness of a desired chemical process". United States. https://www.osti.gov/servlets/purl/872747.
@article{osti_872747,
title = {Method of manipulating the chemical properties of water to improve the effectiveness of a desired chemical process},
author = {Hawthorne, Steven B and Miller, David J and Yang, Yu and Lagadec, Arnaud Jean-Marie},
abstractNote = {The method of the present invention is adapted to manipulate the chemical properties of water in order to improve the effectiveness of a desired chemical process. The method involves heating the water in the vessel to subcritical temperatures between 100.degree. to 374.degree. 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 nonaqueous liquids, selectively separating organics using sorbent phases, enhancing reactions by controlling the disassociation constant of water, cleaning waste water, and removing organics from water using activated carbon or other suitable sorbents.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

Subcritical Water Extraction of Polychlorinated Biphenyls from Soil and Sediment
journal, December 1995


Coupled Subcritical Water Extraction with Solid-Phase Microextraction for Determining Semivolatile Organics in Environmental Solids
journal, January 1996


Subcritical Water Chromatography with Flame Ionization Detection
journal, February 1997


Extraction of Organic Pollutants from Environmental Solids with Sub- and Supercritical Water
journal, September 1994


Class-Selective Extraction of Polar, Moderately Polar, and Nonpolar Organics from Hydrocarbon Wastes Using Subcritical Water
journal, February 1997