Remediation of heavy metal contaminated soil

Details Remediation of heavy metal contaminated soil Remediation of heavy metal contaminated soil

1998-12-22

2000-11-21

Lovering, Richard D.

Hydraulic and earth engineering

Earth treatment or control

Chemical

10612311, 106243, 106277, 210901, 405128, 516 43, 588256, A62D 300, C09D19500

Patent

active

061493511

ABSTRACT:
Methods are disclosed for preparation of chemically-stabilized emulsions of tall oil in water. Temperature and pH are controlled during preparation of the emulsions so as to prevent saponification and neutralization of acids in the tall oil component. The final emulsions have pHs in the range of from about 3.0 to 5.0 and remain phase stable for extended periods of time. Methods are disclosed for using the emulsions for soil treatment to improve soil stabilization and load bearing capacity for roadbed use, for treatment of reclaimed asphalt pavement for reuse as a stabilized base course for roadway construction and for remediation of heavy metal contaminated soil.

REFERENCES:
patent: 3867162 (1975-02-01), Elste, Jr.
patent: 4437896 (1984-03-01), Partanen
patent: 4737356 (1988-04-01), O'Hara et al.
patent: 5193936 (1993-03-01), Pal et al.
patent: 5202033 (1993-04-01), Stanforth et al.
patent: 5895347 (1999-04-01), Doyle
patent: 5968245 (1999-10-01), Jones et al.

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