Method for the disposal of hazardous non-polar organic wastes

• US 4,931,192 A
• Filed: 03/22/1989
• Issued: 06/05/1990
• Est. Priority Date: 03/22/1989
• Status: Expired due to Fees

• Current Assignee: The University Of Tennessee Research Corporation (University of Tennessee)
• Original Assignee: The University Of Tennessee Research Corporation (University of Tennessee)
• Inventors: McBride, Michael A., Covington, J. Stansill, Hayes, Michael E.
• Primary Examiner(s): Hruskoci, Peter
• Assistant Examiner(s): DRODGE, JOSEPH W
• Application Number:
  US07/327,015
• Time in Patent Office: 440 Days
• Field of Search: 210/732, 210/749, 210/751, 210/908-911, 210/925, 530/210, 252/8.6, 252/312, 252/354, 252/628, 252/631, 405/129, 405/128, 106/170, 106/174, 106/239, 106/90, 106/94, 208/262.1, 208/262.5
• US Class Current: 588/17
• CPC Class Codes: A62D 2101/04 Pesticides, e.g. insecticides, herbicides, fungicides or nematocides
• CPC Class Codes: A62D 2101/20 Organic substances
• CPC Class Codes: A62D 2101/22 containing halogen
• CPC Class Codes: A62D 3/33 by chemical fixing the harmful substance, e.g. by chelation or complexation
• CPC Class Codes: G21F 9/165 Cement or cement-like matrix compositional aspects C04B
• CPC Class Codes: G21F 9/30 Processing separating different isotopes of the same chemical element B01D59/00
• CPC Class Codes: Y10S 210/908 Organic

Abstract

A method for disposing of non-polar organic wastes including the steps of dissolving the organic waste in an organic solvent which is not environmentally objectionable, in combination with a suitable surfactant, mixing the resultant solution with a quantity of water to develop an emulsion in which the organic element is effectively dispersed in the water and thereafter mixing the emulsion with cement which, when allowed to solidify, encapsulates the organic waste within the solid cementitious mass. This solid mass is suitable for disposal in a landfill or the like. This invention is useful in safely disposing of environmentally hazardous organic wastes.

Claims

1. In a method for preparing a hazardous non-polar organic material for disposal in a landfill or other disposal area, the improvement comprising the steps of

admixing said non-polar organic material with a solvent therefore and a surfactant to provide a first solution,

emulsifying said first solution with water,

mixing said emulsion with a sufficient quantity of cement to develop a settable mixture, and

thereafter allowing said settable mixture to solidify forming a solidified mass.

2. The method of claim 1 wherein said organic material comprises a mixture of substantially different organic compounds.

3. The method of claim 1 and including the step of dissolving said organic material prior to mixing the same with said surfactant.

4. The method of claim 3 wherein said organic material is dissolved with a solvent selected from the terpene family.

5. The method of claim 4 wherein said organic material is dispersed as discrete islands surrounded by water molecules.

6. The method of claim 1 wherein said organic material is radioactive.

7. The method of claim 1 wherein said organic material comprises chemical waste.

8. The method of claim 1 wherein said emulsion comprises between about 5% and about 35%, by volume, of said first solution and between about 95% and about 65%, by volume, of water.

9. The method of claim 1 wherein said emulsion comprises about 25%, by volume, of said first solution and about 75%, by volume, of water.

10. The method of claim 1 and including the step of coating said solidified mass with a sealant.

11. The method of claim 1 and including the step of introducing to said emulsified liquid solution a polymerizing agent prior to mixing said emulsion with said sufficient quantity of cement.

12. A method for the permanent disposal of environmentally hazardous non-polar organic material in a landfill comprising the steps of

dissolving said organic material in a combination of a solvent selected from the terpene family and a terpene emulsifying surfactant to provide a first solution,

mixing said first solution with water to provide an emulsion wherein said organic-surfactant mixture is isolated as islands surrounded by water molecules,

mixing said emulsion with sufficient dry cement to develop a settable mixture,

allowing said settable mixture to solidify, and, thereafter depositing said solidified mass in a landfill or other disposal area.

13. The method of claim 12 wherein said emulsion comprises between about 5% and about 35%, by volume, of said solution and between about 95% and about 65%, by volume, of water.

14. The method of claim 12 wherein said organic material is radioactive.