Method of soil remediation by concurrent removal of hydrocarbons

Details Method of soil remediation by concurrent removal of hydrocarbons Method of soil remediation by concurrent removal of hydrocarbons

1997-07-25

1999-03-16

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 251, 134 26, 134 40, 134 42, B08B 304, B08B 704, B08B 306

Patent

active

058824294

ABSTRACT:
The invention disclosed relates to an improved solvent extraction/soil remediation process for the concurrent removal of hydrocarbon contaminants, and fixation of heavy metals. The improvements include selecting the metal fixation agent for improved hydrocarbon extraction efficiency, and reducing the number of extraction stages to four or five by breaking down and reforming the soil agglomerates between stages,

REFERENCES:
patent: 5196620 (1993-03-01), Gustin et al.
patent: 5202033 (1993-04-01), Stanforth et al.
patent: 5453133 (1995-09-01), Sparks et al.
patent: 5744107 (1998-04-01), Fristad et al.

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