| 摘要 |
The invention provides a method for the removal of oil from oil-contaminated solid wastes such as drilling muds, of fractions thereof, by mixing the preparation with an aqueous surfactant preparation such that the oil is extracted as an oil-in-water (O/W) microemulsion. The microemulsion and solids phases can be separated by a suitable technique such as centrifugation; residual O/W microemulsion can be removed by an aqueous rinse. The oil can be recovered from the O/W micro emulsion by suitable techniques including, but not limited to, temperature-induced phase-separation.
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