Composition and process for organic and metal contaminant fixation in soil

Title: Composition and process for organic and metal contaminant fixation in soil

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Abstract

A method and compositions using a first ferrous iron containing solution with the iron concentration in excess of theoretical requirements to treat a contaminated site to reduce hexavalent chromium to trivalent chromium and coprecipitate trivalent chromium with other heavy metals and using a second solution of silicate containing a destabilizing salt to form a relatively impermeable gel in the contaminated site thereby fixing metals and organics to the extent that there should be no detectable ground water contamination.

Inventors:

Schwitzgebel, Klaus ^[1]

7507 Chimney Corners, Austin, TX 78731

Issue Date:: 1994-02-08

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

OSTI Identifier:: 869151

Patent Number(s):: 5285000

Application Number:: 07/975,516

Assignee:: Schwitzgebel, Klaus (7507 Chimney Corners, Austin, TX 78731)

Patent Classifications (CPCs):: A - HUMAN NECESSITIES A62 - LIFE-SAVING A62D - CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS

B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL

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A - HUMAN NECESSITIES A62 - LIFE-SAVING A62D - CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS
A62D3/33 - by chemical fixing the harmful substance, e.g. by chelation or complexation

B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL
B09C1/08 - chemically

A - HUMAN NECESSITIES A62 - LIFE-SAVING A62D - CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS
A62D2101/43 - containing heavy metals, in the bonded or free state
A62D2203/02 - Combined processes involving two or more distinct steps covered by groups A62D3/10 - A62D3/40

B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL
B09C2101/00 - In situ

A - HUMAN NECESSITIES A62 - LIFE-SAVING A62D - CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS
A62D2101/20 - Organic substances
A62D3/37 - by reduction, e.g. hydrogenation

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DOE Contract Number:: W-31109-ENG-38

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: composition; process; organic; metal; contaminant; fixation; soil; method; compositions; ferrous; iron; containing; solution; concentration; excess; theoretical; requirements; treat; contaminated; site; reduce; hexavalent; chromium; trivalent; coprecipitate; heavy; metals; silicate; destabilizing; salt; form; relatively; impermeable; fixing; organics; extent; detectable; ground; water; contamination; ground water; heavy metal; heavy metals; hexavalent chromium; water contamination; contaminated site; ferrous iron; containing solution; metal contaminant; /588/106/405/

Citation Formats


                    Schwitzgebel, Klaus. Composition and process for organic and metal contaminant fixation in soil.  United States: N. p., 1994. 
        Web.

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                    Schwitzgebel, Klaus. Composition and process for organic and metal contaminant fixation in soil.  United States.

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                    Schwitzgebel, Klaus. Tue .  
        "Composition and process for organic and metal contaminant fixation in soil".  United States.  https://www.osti.gov/servlets/purl/869151.

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@article{osti_869151,

  title        = {Composition and process for organic and metal contaminant fixation in soil},

  author       = {Schwitzgebel, Klaus},

  abstractNote = {A method and compositions using a first ferrous iron containing solution with the iron concentration in excess of theoretical requirements to treat a contaminated site to reduce hexavalent chromium to trivalent chromium and coprecipitate trivalent chromium with other heavy metals and using a second solution of silicate containing a destabilizing salt to form a relatively impermeable gel in the contaminated site thereby fixing metals and organics to the extent that there should be no detectable ground water contamination.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1994},

  month        = {2}

}

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