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Title: Method and apparatus for removing ions from soil

Abstract

A method and apparatus are presented for selectively removing species of ions from an area of soil. Permeable membranes 14 and 18 impregnated with an ion exchange resin that is specific to one or more species of chemical ions are inserted into ground 12 in close proximity to, and on opposing sides of, a soil area of interest 22. An electric potential is applied across electrodes 26 and 28 to cause the migration of ions out of soil area 22 toward the membranes 14 and 18. Preferably, the resin exchanges ions of sodium or hydrogen for ions of mercury that it captures from soil area 22. Once membranes 14 and 18 become substantially saturated with mercury ions, the potential applied across electrodes 26 and 28 is discontinued and membranes 14 and 18 are preferably removed from soil 12 for storage or recovery of the ions. The membranes are also preferably impregnated with a buffer to inhibit the effect of the hydrolysis of water by current from the electrodes.

Inventors:
Issue Date:
OSTI Identifier:
6223675
Patent Number(s):
5190628
Application Number:
PPN: US 7-841108
Assignee:
IMS; EDB-93-123066
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Resource Relation:
Patent File Date: 25 Feb 1992
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; MEMBRANES; PERMEABILITY; MERCURY; MATERIALS RECOVERY; SOILS; DECONTAMINATION; BUFFERS; ELECTRIC POTENTIAL; ELECTRODES; HYDROGEN; ION EXCHANGE; REMEDIAL ACTION; SODIUM; ALKALI METALS; CLEANING; ELEMENTS; MANAGEMENT; METALS; NONMETALS; PROCESSING; WASTE MANAGEMENT; WASTE PROCESSING; 540220* - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-)

Citation Formats

Bibler, J P. Method and apparatus for removing ions from soil. United States: N. p., 1993. Web.
Bibler, J P. Method and apparatus for removing ions from soil. United States.
Bibler, J P. Tue . "Method and apparatus for removing ions from soil". United States.
@article{osti_6223675,
title = {Method and apparatus for removing ions from soil},
author = {Bibler, J P},
abstractNote = {A method and apparatus are presented for selectively removing species of ions from an area of soil. Permeable membranes 14 and 18 impregnated with an ion exchange resin that is specific to one or more species of chemical ions are inserted into ground 12 in close proximity to, and on opposing sides of, a soil area of interest 22. An electric potential is applied across electrodes 26 and 28 to cause the migration of ions out of soil area 22 toward the membranes 14 and 18. Preferably, the resin exchanges ions of sodium or hydrogen for ions of mercury that it captures from soil area 22. Once membranes 14 and 18 become substantially saturated with mercury ions, the potential applied across electrodes 26 and 28 is discontinued and membranes 14 and 18 are preferably removed from soil 12 for storage or recovery of the ions. The membranes are also preferably impregnated with a buffer to inhibit the effect of the hydrolysis of water by current from the electrodes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {3}
}