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Method-for-enhancing-the-biodegradation-of-biodegradable-organic-wastes

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Method for enhancing the biodegradation of biodegradable organic wastes

Details

Inventors: Gatt, Shimon; Barenholz, Yechezkel; Bercovier, Herve;
Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem (Jerusalem, IL)
Primary Examiner: Wyse; Thomas
Assistant Examiner:
Attorney, Agent or Firm: Lowe, Price, LeBlanc & Becker

The invention provides a composition for enhancing the biodegradation of biodegradable organic wastes comprising a combination of organic-waste consuming microorganisms and liposomes wherein the liposomes supply essential nutrients for bacterial growth while concomitantly increasing the polarity and wettability of the waste, thereby increasing their availability for enhanced bacterial interaction therewith and methods for the use thereof.

DETAILED DESCRIPTION What is claimed is: 1.
In a method for the biodegradation of biodegradable organic wastes, the improvement comprising applying liposomes having vesicles of a diameter of about 20-80 nm to a biodegradable organic waste site in the presence of organic waste-consuming microorganisms, wherein molecules originating from said liposomes supply essential nutrients for bacterial growth of said microorganisms, while concomitantly increasing the polarity, wettability and availability of said organic waste for enhanced bacterial interaction therewith.
2.
A method according to claim 1 wherein said organic waste is selected from crude and refined hydrocarbons.
3.
A method according to claim 1 wherein said organic waste is light or heavy crude oil.
4.
A method according to claim 1 wherein said organic waste is gasoline.
5.
A method according to claim 1 wherein said organic waste is an oil spill on water.
6.
A method according to claim 1 wherein said organic waste site is contaminated soil.
7.
A method according to claim 1 wherein said liposomes are phospholipid liposomes.

Description:
The present invention relates to a composition for enhancing the biodegradation of biodegradable organic wastes and to methods utilizing the same.
More particularly, the present invention relates to compositions and methods for enhanced biodegradation and/or recovery of hydrocarbons including the cleanup of hazardous hydrocarbon wastes.
Prior research, patents and applications have been directed to enhanced oil recovery.
Thus, e.
g.
, there is described and claimed in U.
S.
Pat.
No.
4,811,791 a method of recovering a petroleum from an underground source thereof comprising injecting into said underground source a petroleum displacement agent comprising a fluid and a modified liposome, said liposome being present in an amount sufficient to lower the interfacial tension between said fluid and said petroleum to below about 50 millidynes.
In U.
S.
Ser.
No.
07/322,601 there is described and claimed a displacement agent for recovery of a petroleum from an underground source comprising a petroleum displacing water molecules and a liposome modified by peroxidation and/or other procedures and being a dispersion of sealed vesicles

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