CA1135241A - Method of collecting oil using diatomaceous earth and compositions used in such method - Google Patents
Method of collecting oil using diatomaceous earth and compositions used in such methodInfo
- Publication number
- CA1135241A CA1135241A CA000327979A CA327979A CA1135241A CA 1135241 A CA1135241 A CA 1135241A CA 000327979 A CA000327979 A CA 000327979A CA 327979 A CA327979 A CA 327979A CA 1135241 A CA1135241 A CA 1135241A
- Authority
- CA
- Canada
- Prior art keywords
- oil
- diatomaceous earth
- product
- water
- buoyant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/32—Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/681—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of solid materials for removing an oily layer on water
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Medicinal Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Public Health (AREA)
- Materials Engineering (AREA)
- Removal Of Floating Material (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
ABSTRACT
This invention relates to a method for neutralizing and collecting oil from oil spills and to a composition used in such method and to a combustible product produced by such method. In accordance with the method of this invention in one aspect, diatomaceous earth is used to absorb and adsorb oil from the oil spills in a proportion which will provide a clay-like product. This clay-like product can readily be removed. Where the oil spill is on water a composition is provided which is particularly suitable for collecting the oil comprising the combination of a material that is at least temporarily buoyant and diatomaceous earth. The resultant product from the method of collecting oil from oil spills on land may be used as a fuel. The same applies to the composition resulting from the collection of oil from oil spills on water where the buoyant material is combustible.
This invention relates to a method for neutralizing and collecting oil from oil spills and to a composition used in such method and to a combustible product produced by such method. In accordance with the method of this invention in one aspect, diatomaceous earth is used to absorb and adsorb oil from the oil spills in a proportion which will provide a clay-like product. This clay-like product can readily be removed. Where the oil spill is on water a composition is provided which is particularly suitable for collecting the oil comprising the combination of a material that is at least temporarily buoyant and diatomaceous earth. The resultant product from the method of collecting oil from oil spills on land may be used as a fuel. The same applies to the composition resulting from the collection of oil from oil spills on water where the buoyant material is combustible.
Description
~3~
This invention relates to a me~hod for collectin~
oil and dealing with and reducing the toxic and des~ructive effects of oil spills by the use of an inert, non-toxic material alone or in combination with other non-toxic and inert materials. The oil with which this invention is concerned is petroleum base oil and the term "oil" will henceforth be used with this meaning. Spills of fuel oil present a particular problem, both on land and water.
Oil spills have become of increasing concern due to the ecological, environmental and atmospheric (oil evap-oration) damage that is caused. Numerous schemes have been proposed for collectin~, dispersing or neutralizing the ~ -oil, but to date for various reasons, none has proven to be entirely satisfactory. Generally the problem has been the fact that by its very nature, oil when spilled, either on land or water, is difficult to handle.
The object of this invention is to provide processes and methods which will cause the oil to be absorbed and adsorbed and thus to provide a product which can be readily . ~ .
~' 20 collected and/or disposed of.
' A further object of this invention is to provide a composition or compositions which are particularly suitable for use in such methods.
Another object is to produce a resultant by-product ~ having value as a fuel.
v In accordance with the method of this invention in ~g one aspect, diatomaceous earth is used to absorb and adsorb - the oil in a proportion which will provide a clay-like product.~nder conditions of the use of Arabian light oil of specific gravity 0.8581 and Saybolt Universal viscosity 67 at about ~0F., the ratio to provide such clay-like product , is between 1:1 parts by volume of oil to diatomaceous earth and --/
r 1:~ par-ts by volume of oil to diatomaceous earth. The diatomaceous earth that was used came from California.
Variations in the source and type of oils and their viscos-ities and densities,surface tensions, weather conditions and prevailing temperatures may necessarily result in variations to these proportions.
The combination of diatomaceous earth and initially buoyant absorbent materials is particularly suitable for use in practising the method of this invention applied to oil spills on water where buoyan~y is desired to facili-~ate recovery of the resultant floating clay-like product. This is believed to be a novel composition and as such represents a further aspect of this invention. Similarly, diatomaceous earth by itself or in combination with denser particulate materials is particularly suitable for use in practising the method of this invention in cases where more rapid sinking of the clay-like product is desired and is believed to be a novel composition.
In the case of oil spills on land diatomaceous earth may be applied without significant additives. The proportion should be such as to produce a clay-like product where it is desired to recover or remove the oil. But in some case, such as a beach, it may be satisfactory to use an excess of diatomaceous earth in which there is too small a proportion of oil to act as a binder. ~he frangible diatomaceous earth that has absorbed and adsorbed the oil is then merely left on the beach.
In accordance with a further aspect of this invention the combination of diatomaceous earth and oil provides a product which can be shaped into briguettes or any other convenient form and used as fuel. Other suitable substances such as peat, hay and straw may be included.
It has been found that as increasing parts of diatomaceous earth are mixed with oil, certain significant changes take place. Commencing first with one part of diatomaceous earth to two parts of oil by volume, there is merely thickening of the oil with no significant advantage being obtained. However, at about equal parts of diatomaceous earth to oil by vol~ne, a significant though not abrupt transition occurs and the product is no longer oily to the touch~ Instead it has a texture similar to that of soil having a high clay content, with the oil acting as a binder to give some degree o~ bonding between the individual particles of diatomaceous earth. Such bonding is useful as it facilitates the handling of the clay-like product.
Under conditions of oil density and viscosity within the medium range, and at temperatures about 60F., it is best to use about four parts of diatomaceous earth to one part of oil by volume. Larger amounts of diatomaceous earth may be wasteful and furthermore substantially beyond four parts of diatomaceous earth to one part of oil by volume, ~ 20 the binding effect of the oil diminishes to a low value.
,. . .
About four parts of diatomaceous earth to one part oil by volume, therefore, under the stated conditions represents a ~ practical upper limit on the ratio of diatomaceous earth to - oil by volume, where the achievement of such binding effect is important. With heavy oil such as Bunker C oil, a larger amount of diatomaceous earth should be used. About one part of oil to 4 to 8 parts of diatomaceous earth is preferred.
In the case of oil spills on water, an important parameter in the selection of a suitable ratio of diatomaceous earth to oil is the time to initiation of sinking. The appropriate ratio is dependent upon the viscosity and type of spilt oil, the thickness and size of the oil layer, the ;, `' .
temperature, the prevailing atmosphere and weather conditions, includin~ the currents, water temperature, wind, rain and wave size and form~
In accordance with one way of practising the method of this invention, diatomaceous earth may be spread on the spilled oil in the ratiG of from one to three parts of diatomaceous earth to about one part of oil by volume.
The diatomaceous earth will absorb the oil and the resultant clay-like product will fall to the bottom. As the oil will be retained indefinitely in the pores of the diatomaceous earth, the massive ecological damage caused by floating oil slicks resulting from oil spills on water will be greatly reduced, if not eliminated~ As, however, the possibility arises that even in this absorbed form, some harm will be ~` caused to sensitive marine life, it may therefore be preferred to cause the combination of diatomaceous earth and oil to float for a sufficient period of time to enable it to be removea mechanically from the surface of the water by suitable means such as netting. Unfortunately, once diatomaceous earth has been wetted it will sink. But it has been found that a mixture of diatomaceous earth with an initially buoyant absorbent fibrous material such as hay, straw or peat, together with the absorbed oil, will float for a sufficient time for the product to be removed mechanically. For example, one part of hay to one part of diatomaceous earth to one part of oil of medium viscosity, all by volume, will bat for a period o~ approximately one week or more. Preferably the ratio of diatomaceous earth to buoyant material should be 1:1 -to 1:5 parts by volume. The ratio previously indicated, namely, one to four parts of diatomaceous earth to one part of oil by volume should be retained when diatomaceous earth is used alone. However, it will be appreciated that the hay or other fibrous material will absorb additional oil. The amount of diatomaceous earth required may be reduced ~3SZ~
to an extent d~pendent on the oil absorbed by the fibrous material. The diatomaceous earth combines with oil and in so doing becomes a binder that links the fibrous material to form a cohesive and durable floating "island".
Although the diatomaceous earth can be applied to the oil physically mixed with the fibrous material, it may be preferable in the case of the use of diatomaceous earth combined with an initially buoyant fibrous material such as dry hay, straw or peat, that the initially buoyant fibrous material be applied to the oil in advance of the application of the diatomaceous earth. In the case of peat, if the diatomaceous earth is applied to oil mixed with the peat, due to its fine size, the diatomaceous earth will quickly work down through the peat and much of it may be lost. Once the oil is present on the surface of the peat, it has a sufficient binding effect to prevent significant loss of diatomaceous earth. The composite product that results, whlch will float for an appreciable period, may in the meanwhile, be skimmed off using conventional-e~liEment, such as a scoop. The clay-like texture resulting from the diatomaceous earth and oil will consolidate the peat, and make it easier to handle. Other natural or synthetic or buoyant materials such as hay, 6traw, porous plastic known under the trademark STYROFOAM, polyure-thane or polystyrene! which may be in the form of fibersJ
could be used in combination with the diatomaceous earth in cases where buoyancy is desired, although their cost may be high, and must be measured against the ecological benefit from the operation. .
In accordance with the preferred method of this invention which is believed to be unique, the following procedure is followed: - a net is sunk through the oil, buoyant material is applied to the oil, diatomaceous earth is applied ,. ~
~ - 5 -with or subsequent to the application of the buoyant material to develop the desired consolidation of buoyant material and oil. Then the net is raised to remove the product fxom the water and the product is dumped into suitable receptacles.
In cases where time is of the essence, for example, where a spill is approaching a vulnerable location such as a popu~ated land rnass, shore line, resort area, fish spawning area, or shellfish ground, then diatomaceous earth may be used alone or in combination with a more dense material as a loading agent to accelerate -the sinking process before the oil reaches the vulnerable location~ The oil will then be absorbed and adsorbed and then rendered innocuous by being deposited on the ocean bed at a non-critical location.
Processed and ground clays freely available and similar to those in common use as absorbent cat litter have been found to be effective loading agents, when mixed with diatomaceous earth for this purpose. A suitable working proportion of three parts of diatomaceous earth to one part of clay and one part of oil, all by volume, has been found to be suitable for medium oils at room temperatures. However, variations in sinking times may occur depending on the type of oil, temper-ature, weather and other conditions prevailing.
Another possibility where oil is approaching a shore line is to apply diatomaceous earth to the shore as a preventative measure, so that the oil will immediately be absorbed before it causes damage.
A further serious problem resulting from large scale oil spills is air pollution b~ oil vapour. Diatomaceous earth, by its nature, tends to control the volatilization of the lighter oil fractions of oil spills so as to minimize the - 6 - ~
~, 5;~
effects on habitable areas of air which contains entrained oil.
It will be appreciated from the foregoing that the method and composition of the invention provides a highly useful and effective way of either collecting, dispelling or nullifying oil spills. Diatomaceous earth is preferably applied alone or with small amounts of additives in the case of oil spills on land such as oil-well blowouts on land, ruptured pipelines and other spills, which, though they take place on water, result in oil being deposited on the beaches. In the case of oil spills at sea, it will usually be preferable to use the combination of diatomaceous earth and a fibrous buoyant material as previously discussed. Suitable materials are combustible products such as hay, straw or peat. In either case, the product will be combustible. Briquettes can readily be formed by shaping any of these products in moulds under moderate pressure and temperature.
~-`, , ' ' ''' :
This invention relates to a me~hod for collectin~
oil and dealing with and reducing the toxic and des~ructive effects of oil spills by the use of an inert, non-toxic material alone or in combination with other non-toxic and inert materials. The oil with which this invention is concerned is petroleum base oil and the term "oil" will henceforth be used with this meaning. Spills of fuel oil present a particular problem, both on land and water.
Oil spills have become of increasing concern due to the ecological, environmental and atmospheric (oil evap-oration) damage that is caused. Numerous schemes have been proposed for collectin~, dispersing or neutralizing the ~ -oil, but to date for various reasons, none has proven to be entirely satisfactory. Generally the problem has been the fact that by its very nature, oil when spilled, either on land or water, is difficult to handle.
The object of this invention is to provide processes and methods which will cause the oil to be absorbed and adsorbed and thus to provide a product which can be readily . ~ .
~' 20 collected and/or disposed of.
' A further object of this invention is to provide a composition or compositions which are particularly suitable for use in such methods.
Another object is to produce a resultant by-product ~ having value as a fuel.
v In accordance with the method of this invention in ~g one aspect, diatomaceous earth is used to absorb and adsorb - the oil in a proportion which will provide a clay-like product.~nder conditions of the use of Arabian light oil of specific gravity 0.8581 and Saybolt Universal viscosity 67 at about ~0F., the ratio to provide such clay-like product , is between 1:1 parts by volume of oil to diatomaceous earth and --/
r 1:~ par-ts by volume of oil to diatomaceous earth. The diatomaceous earth that was used came from California.
Variations in the source and type of oils and their viscos-ities and densities,surface tensions, weather conditions and prevailing temperatures may necessarily result in variations to these proportions.
The combination of diatomaceous earth and initially buoyant absorbent materials is particularly suitable for use in practising the method of this invention applied to oil spills on water where buoyan~y is desired to facili-~ate recovery of the resultant floating clay-like product. This is believed to be a novel composition and as such represents a further aspect of this invention. Similarly, diatomaceous earth by itself or in combination with denser particulate materials is particularly suitable for use in practising the method of this invention in cases where more rapid sinking of the clay-like product is desired and is believed to be a novel composition.
In the case of oil spills on land diatomaceous earth may be applied without significant additives. The proportion should be such as to produce a clay-like product where it is desired to recover or remove the oil. But in some case, such as a beach, it may be satisfactory to use an excess of diatomaceous earth in which there is too small a proportion of oil to act as a binder. ~he frangible diatomaceous earth that has absorbed and adsorbed the oil is then merely left on the beach.
In accordance with a further aspect of this invention the combination of diatomaceous earth and oil provides a product which can be shaped into briguettes or any other convenient form and used as fuel. Other suitable substances such as peat, hay and straw may be included.
It has been found that as increasing parts of diatomaceous earth are mixed with oil, certain significant changes take place. Commencing first with one part of diatomaceous earth to two parts of oil by volume, there is merely thickening of the oil with no significant advantage being obtained. However, at about equal parts of diatomaceous earth to oil by vol~ne, a significant though not abrupt transition occurs and the product is no longer oily to the touch~ Instead it has a texture similar to that of soil having a high clay content, with the oil acting as a binder to give some degree o~ bonding between the individual particles of diatomaceous earth. Such bonding is useful as it facilitates the handling of the clay-like product.
Under conditions of oil density and viscosity within the medium range, and at temperatures about 60F., it is best to use about four parts of diatomaceous earth to one part of oil by volume. Larger amounts of diatomaceous earth may be wasteful and furthermore substantially beyond four parts of diatomaceous earth to one part of oil by volume, ~ 20 the binding effect of the oil diminishes to a low value.
,. . .
About four parts of diatomaceous earth to one part oil by volume, therefore, under the stated conditions represents a ~ practical upper limit on the ratio of diatomaceous earth to - oil by volume, where the achievement of such binding effect is important. With heavy oil such as Bunker C oil, a larger amount of diatomaceous earth should be used. About one part of oil to 4 to 8 parts of diatomaceous earth is preferred.
In the case of oil spills on water, an important parameter in the selection of a suitable ratio of diatomaceous earth to oil is the time to initiation of sinking. The appropriate ratio is dependent upon the viscosity and type of spilt oil, the thickness and size of the oil layer, the ;, `' .
temperature, the prevailing atmosphere and weather conditions, includin~ the currents, water temperature, wind, rain and wave size and form~
In accordance with one way of practising the method of this invention, diatomaceous earth may be spread on the spilled oil in the ratiG of from one to three parts of diatomaceous earth to about one part of oil by volume.
The diatomaceous earth will absorb the oil and the resultant clay-like product will fall to the bottom. As the oil will be retained indefinitely in the pores of the diatomaceous earth, the massive ecological damage caused by floating oil slicks resulting from oil spills on water will be greatly reduced, if not eliminated~ As, however, the possibility arises that even in this absorbed form, some harm will be ~` caused to sensitive marine life, it may therefore be preferred to cause the combination of diatomaceous earth and oil to float for a sufficient period of time to enable it to be removea mechanically from the surface of the water by suitable means such as netting. Unfortunately, once diatomaceous earth has been wetted it will sink. But it has been found that a mixture of diatomaceous earth with an initially buoyant absorbent fibrous material such as hay, straw or peat, together with the absorbed oil, will float for a sufficient time for the product to be removed mechanically. For example, one part of hay to one part of diatomaceous earth to one part of oil of medium viscosity, all by volume, will bat for a period o~ approximately one week or more. Preferably the ratio of diatomaceous earth to buoyant material should be 1:1 -to 1:5 parts by volume. The ratio previously indicated, namely, one to four parts of diatomaceous earth to one part of oil by volume should be retained when diatomaceous earth is used alone. However, it will be appreciated that the hay or other fibrous material will absorb additional oil. The amount of diatomaceous earth required may be reduced ~3SZ~
to an extent d~pendent on the oil absorbed by the fibrous material. The diatomaceous earth combines with oil and in so doing becomes a binder that links the fibrous material to form a cohesive and durable floating "island".
Although the diatomaceous earth can be applied to the oil physically mixed with the fibrous material, it may be preferable in the case of the use of diatomaceous earth combined with an initially buoyant fibrous material such as dry hay, straw or peat, that the initially buoyant fibrous material be applied to the oil in advance of the application of the diatomaceous earth. In the case of peat, if the diatomaceous earth is applied to oil mixed with the peat, due to its fine size, the diatomaceous earth will quickly work down through the peat and much of it may be lost. Once the oil is present on the surface of the peat, it has a sufficient binding effect to prevent significant loss of diatomaceous earth. The composite product that results, whlch will float for an appreciable period, may in the meanwhile, be skimmed off using conventional-e~liEment, such as a scoop. The clay-like texture resulting from the diatomaceous earth and oil will consolidate the peat, and make it easier to handle. Other natural or synthetic or buoyant materials such as hay, 6traw, porous plastic known under the trademark STYROFOAM, polyure-thane or polystyrene! which may be in the form of fibersJ
could be used in combination with the diatomaceous earth in cases where buoyancy is desired, although their cost may be high, and must be measured against the ecological benefit from the operation. .
In accordance with the preferred method of this invention which is believed to be unique, the following procedure is followed: - a net is sunk through the oil, buoyant material is applied to the oil, diatomaceous earth is applied ,. ~
~ - 5 -with or subsequent to the application of the buoyant material to develop the desired consolidation of buoyant material and oil. Then the net is raised to remove the product fxom the water and the product is dumped into suitable receptacles.
In cases where time is of the essence, for example, where a spill is approaching a vulnerable location such as a popu~ated land rnass, shore line, resort area, fish spawning area, or shellfish ground, then diatomaceous earth may be used alone or in combination with a more dense material as a loading agent to accelerate -the sinking process before the oil reaches the vulnerable location~ The oil will then be absorbed and adsorbed and then rendered innocuous by being deposited on the ocean bed at a non-critical location.
Processed and ground clays freely available and similar to those in common use as absorbent cat litter have been found to be effective loading agents, when mixed with diatomaceous earth for this purpose. A suitable working proportion of three parts of diatomaceous earth to one part of clay and one part of oil, all by volume, has been found to be suitable for medium oils at room temperatures. However, variations in sinking times may occur depending on the type of oil, temper-ature, weather and other conditions prevailing.
Another possibility where oil is approaching a shore line is to apply diatomaceous earth to the shore as a preventative measure, so that the oil will immediately be absorbed before it causes damage.
A further serious problem resulting from large scale oil spills is air pollution b~ oil vapour. Diatomaceous earth, by its nature, tends to control the volatilization of the lighter oil fractions of oil spills so as to minimize the - 6 - ~
~, 5;~
effects on habitable areas of air which contains entrained oil.
It will be appreciated from the foregoing that the method and composition of the invention provides a highly useful and effective way of either collecting, dispelling or nullifying oil spills. Diatomaceous earth is preferably applied alone or with small amounts of additives in the case of oil spills on land such as oil-well blowouts on land, ruptured pipelines and other spills, which, though they take place on water, result in oil being deposited on the beaches. In the case of oil spills at sea, it will usually be preferable to use the combination of diatomaceous earth and a fibrous buoyant material as previously discussed. Suitable materials are combustible products such as hay, straw or peat. In either case, the product will be combustible. Briquettes can readily be formed by shaping any of these products in moulds under moderate pressure and temperature.
~-`, , ' ' ''' :
Claims (13)
1. A method of collecting oil from oil spills comprising the step of applying diatomaceous earth to such oil in an amount sufficient to create a clay-like product, followed by the removal of such clay-like product.
2. A method as in claim 1 in which the ratios of oil to diatomaceous earth are in the range from 1:1 to 1:4 parts by volume for oils of viscosities and density within the medium range.
3. A method as in claim 1 in which the ratios of oil to diatomaceous earth range from 1:4 to 1:8 parts by volume for heavy oils.
4. A method as in claims 1, 2 or 3 in which the oil is collected from the surface of water and in which the clay-like product is disposed of by its being allowed to sink to the bottom of the water.
5. A method as in claims 1, 2 or 3 in which the oil is collected from the surface of water and in which a material which is at least temporarily buoyant is applied to the spilt oil and at the same time or subsequently, the diatomaceous earth is applied, the temporarily buoyant material acting to cause the said clay-like product to float, and in which the buoyant material and clay-like product are removed from the surface of the water.
6. A method as in claims 1, 2 or 3 in which the oil is collected from the surface of water and in a temporarily buoyant fibrous material is applied to the spilt oil and at the same time or subsequently, the diatomaceous earth is applied, the temporarily buoyant fibrous material acting to float the said clay-like product, and in which the buoyant fibrous material and clay-like product is removed from the surface of the water.
7. A method as in claims 1, 2 or 3 in which the oil is collected from the surface of water and a substance selected from the group consisting of dry hay, straw and peat is applied to the water and at the same time or subsequently ARAN is applied, the hay, straw or peat acting to support the said clay-like product, and in which the hay, straw or peat and clay-like product is removed from the surface of the water.
8. A method as in claims 1, 2 or 3 in which a net is placed beneath oil on the surface of water, buoyant material is applied to the oil, ARAN is applied with or subsequent to the application of the buoyant material, the net is raised to remove the product from the water and the product is then dumped from the net into a suitable receptacle.
9. A composition for use in collecting oil from oil spills on water comprising the combination of a material that is at least temporarily buoyant and ARAN.
10. A composition as in claim 9 in which the buoyant material is a fibrous material.
11. A composition as in claim 9 in which the buoyant material is selected from the group consisting of dry hay, straw or peat.
12. A composition as in claims 9, 10 or 11 in which ARAN is disposed on the surface of the buoyant material.
13. A composition as in claims 9, 10 or 11 in which the ratio of ARAN to buoyant material is in the range from 1:1 to 1:5 parts by volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000327979A CA1135241A (en) | 1979-05-22 | 1979-05-22 | Method of collecting oil using diatomaceous earth and compositions used in such method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000327979A CA1135241A (en) | 1979-05-22 | 1979-05-22 | Method of collecting oil using diatomaceous earth and compositions used in such method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1135241A true CA1135241A (en) | 1982-11-09 |
Family
ID=4114247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000327979A Expired CA1135241A (en) | 1979-05-22 | 1979-05-22 | Method of collecting oil using diatomaceous earth and compositions used in such method |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1135241A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057227A (en) * | 1990-10-09 | 1991-10-15 | University Of South Carolina | Method for in-situ removal of hydrocarbon contaminants from groundwater |
| CZ297246B6 (en) * | 2006-01-23 | 2006-10-11 | Friedl@Frantisek | Spread for sorption of liquids and consistent cleaning of solid surface |
| CZ301084B6 (en) * | 2006-08-01 | 2009-11-04 | Friedl@František | Use of diatomaceous earth-based material as ingredient for increasing wettability in cooling liquids of machine tools and in compositions for treating surfaces prior coating |
-
1979
- 1979-05-22 CA CA000327979A patent/CA1135241A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057227A (en) * | 1990-10-09 | 1991-10-15 | University Of South Carolina | Method for in-situ removal of hydrocarbon contaminants from groundwater |
| CZ297246B6 (en) * | 2006-01-23 | 2006-10-11 | Friedl@Frantisek | Spread for sorption of liquids and consistent cleaning of solid surface |
| CZ301084B6 (en) * | 2006-08-01 | 2009-11-04 | Friedl@František | Use of diatomaceous earth-based material as ingredient for increasing wettability in cooling liquids of machine tools and in compositions for treating surfaces prior coating |
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