Thin layer solvent extraction

Details Thin layer solvent extraction Thin layer solvent extraction

1997-11-14

1999-06-15

Suchfield, George

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

134 7, 134 40, 166306, 166371, 208434, 196 1452, 209173, 210691, 210693, B01D 1102, B09C 100, B09C 104, E21B 4316

Patent

active

059115416

ABSTRACT:
A method for separating hydrocarbons from a soil, e.g. to separate bitumen from oil sands, involves mixing the soil thoroughly with water and a supply of buoyant beads having surfaces that are of oleophilic material and coated with a surface layer of hydrocarbon solvent. The beads, soil and water are agitated for a period during which hydrocarbons from the soil become adhered to the solvent coated beads. After the mixture has been allowed to settle the beads separate towards the top and are removed and treated with solvent to recover the adhered hydrocarbons therefrom. Suitable solvents are oil refinery products such as naphtha, kerosine, gasoline, varsol, toluene and diesel fuel.

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