Method of making and using nanoscale metal
Methods of treating ground water and methods for reducing contaminants (e.g., chlorinated compounds in contaminated ground water) to harmless compounds in the presence of an elemental metal treatment composition. Said methods comprise injecting a treatment solution comprising a colloidal suspension of elemental metal particles (e.g., iron, a tin, a zinc, a palladium and mixtures thereof) having a nanoscale particle size and a carbohydrate in an organic liquid (e.g., dodecane, butyl acetate and polypropylene glycol ethyl ether acetate and mixtures thereof) into the ground, proximate to the contaminated ground water.
1. A method of remediating contaminated ground water comprising injecting a treatment solution comprising a colloidal suspension of elemental metal particles having a particle size between 100 nanometers and 400 nanometers and a carbohydrate in an organic liquid into the ground, proximate to the contaminated ground water.
2. The method of claim 1 , wherein the metal is selected from the group consisting of an iron, a tin, a zinc, a palladium and mixtures thereof.
3. The method of claim 1 , wherein the carbohydrate comprises corn syrup.
4. The method of claim 1 , wherein the treatment solution additionally comprises a propping agent.
5. The method of claim 1 , wherein the treatment solution is injected beneath a water table.
6. The method of claim 1 , wherein the treatment solution is injected above a water table.
7. The method of claim 1 , wherein the treatment solution is injected under pressure.
8. The method of claim 1 comprising the additional step of fracturing soil around an injection site with hydraulic pressure prior to injecting the treatment solution.
9. The method of claim 1 , wherein the treatment solution is injected with hydraulic pressure to fracture soil simultaneously with injection of the treatment solution.
10. The method of claim 1 , wherein the treatment solution is mixed in the ground with an auger.
11. The method of claim 10 , wherein dust generated by the auger is removed through a dust collector.
12. The method of claim 1 , wherein the treatment solution is injected into a compressed nitrogen gas.
13. The method of claim 1 , wherein the treatment solution is injected through a wellbore screen.
14. A method for treating a contaminated groundwater, comprising:
providing a borehole which extends from a surface location to a subterranean formation comprising groundwater with at least one contaminant;
injecting a treatment solution comprising a carbohydrate and an elemental metal having a reactivity controlled particle with a nanoscale size suspended in a non-aqueous organic liquid that is not reactive with the elemental metal down the borehole and into the subterranean formation wherein said treatment solution contacts the groundwater.
15. The method of claim 14 , wherein the groundwater is contaminated with a chlorinated solvent.
16. The method of claim 14 , wherein the elemental metal is selected from the group consisting of iron, tin, zinc, palladium and mixtures thereof.
17. The method of claim 14 , wherein the carbohydrate comprises corn syrup.
18. The method of claim 14 , wherein the treatment solution additionally comprises a propping agent.
19. The method of claim 14 , further comprising the step of hydraulically fracturing the subterranean formation.
20. The method of claim 14 , wherein at least a portion of said treatment solution comprises a nano-scale iron.