WO2012026844A1 - Composition for purification of soils polluted by oil and petroleum products - Google Patents
Composition for purification of soils polluted by oil and petroleum products Download PDFInfo
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- WO2012026844A1 WO2012026844A1 PCT/RU2011/000085 RU2011000085W WO2012026844A1 WO 2012026844 A1 WO2012026844 A1 WO 2012026844A1 RU 2011000085 W RU2011000085 W RU 2011000085W WO 2012026844 A1 WO2012026844 A1 WO 2012026844A1
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- composition
- peat
- cationic surfactant
- zeolite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Definitions
- composition for purification of soils polluted by oil and petroleum products Composition for purification of soils polluted by oil and petroleum products
- the invention relates to environmental protection, in particular, to purification and remediation of soils and subsoils polluted by oil and petroleum products.
- Oil-oxidizing microorganisms containing in the peat and in the fertilizer of known composition are intended for increasing oil biodegradation.
- Peat should provide oil retention and prevent its further extending in the soil due to its sorption properties.
- peat is an amphiphilic sorbent possessing significant hydrophilic properties along with hydrophobic ones, that is unfavorable for effective binding of oil hydrocarbons.
- composition is known (RU Pat. No. 2307707, publ. 10/10/2007) that contains non-sterile high-moor sphagnum moss or high-moor low-decomposed sphagnum peat and a natural polymer arabinogalactane (as an organic activator) at the following relationship of ingredients (weight %): non-sterile high-moor sphagnum moss or high-moor low-decomposed sphagnum peat, 99,9-99,5; arabinogalactane, 0,5-0, 1.
- the high-moor sphagnum moss or high-moor sphagnum peat used in the reported composition have smaller sorption capacity towards oil hydrocarbons, than low-moor and medium-located peat owing to low specific surface, which is characteristic for low-decomposed plant materials.
- use of natural polymer arabinogalactane for environmental needs is inappropriately because of its costliness and low volumes of its production.
- the method of obtaining a sorbent is known (RU Pat. No. 2191066, publ. 10/20/2002), where the fact of the matter is that a peat having the moisture of 35- 40 % (here low-moor peat and/or medium-located and high-moor peat are used) is subjected to hydrophobization by thermal processing up to the moisture of 10-20 % followed by its separation and pressing peat fractions having the size of 0,5-3,0 mm under pressure of 16,0-18,0 MPa in the briquettes up to the moisture of 10-15 %.
- hydrophobizating agents water insoluble carbonaceous compounds (bitumens, waxes, lignines) act, that eliminate together with water from hard organic matter of peat under the high temperature without an access of air.
- Deficiencies of this method are high power inputs on thermal processing and necessity of use of expensive special equipment. Besides, the sorbent obtained as a result of thermal processing loses the microflora containing in it, including hydrocarbon-oxidizing microorganisms needed for biodegradation.
- composition USSR Pat. No. 704903, publ. 12/25/1979
- composition containing 95,0-99,95 weight % of a cellulose-containing material and 0,05-5,0 weight % of an amino-containing modifier.
- peat as the cellulose-containing matter
- 8 as the modifier.
- the deficiencies of that composition are the following ones: i) the hydrophobization of the peat surface by salts of aliphatic amines is low effective owing to low retention of cations of the modifier by peat particles having a weak negative charge; ii) because of high solubility of salts of aliphatic amines they are easily flushed away from the peat surface and taken out into the lower soil layers and ground water; iii) aliphatic amines and their salts possess toxic effect, calling irritation of skin integuments, defeat of central nervous system and of alimentary tracts of people and animals (Harmful matters in the industry. Handbook for chemists, engineers and medical officers. Volume II. - Leningrad: Chemistry Press, 1976). In the result during the use of that composition its effectiveness sharply drops and the pollution of soil medium and ground water by toxic ingredients happens.
- the purpose of the proposed invention is the creation of an environmentally- save composition intended for localization and biological destruction of hydrocarbon contaminants (oil and petroleum products) in soils. Thereby two processes most important for environment protection - i.e. sorption binding and contaminant utilization - are realized.
- the technical result is attained by means of the fact that the composition for soil clean up contains non-sterile peat filler, nitrogen and phosphorous fertilizers (at the relationship of N: 1 ), and also zeolite-clay rock (ZCR) whose surface is hydrophobized by the cationic surfactant (the halide of tetra-substituted ammonium) at the following maintenance of ingredients, weight %:
- Nitrogen fertilizer N 0,01 -0, 15
- Zeolite-clay rock modified by the cationic surfactant 1 -15 Zeolite-clay rock modified by the cationic surfactant 1 -15
- the modified ZCR containing in the proposed composition is a strong sorbent capable to link hydrophobic contaminants at any moisture conditions, up to completely hydrated ones.
- This effect is provided with the fact that during modification, the hydrophilic centers on the surface of minerals (both zeolite and clayey ones) are bond with the positively charged functional groups of the cationic surfactant, i.e. quarternary nitrogen.
- the exterior surface of a mineral sorbent is completely coated by hydrophobic alkyl groups.
- the interaction of ZCR with the cationic surfactant is carried out due to the reaction of substitution of exchange cations of minerals (both zeolite and clayey ones) by cations of the surfactant.
- the formed complex possesses high stability and is characterized by the practically total absence of washout of the modifier.
- the toxicity of used quarternary ammonium salts is extremely low (for this reason they are widely applied in medicine, cosmetics, pharmacology, and household chemical goods specimens).
- the cationic surfactant has the formula R R 2 R 3 R 4 N + Hal " .
- the substituents R1 -R3 are represented by a pyridinium or alkyl groups with Ci - C 4 carbon length and/or by a benzyl group; the substituents R 4 - by alkyl groups with with Ci - C 18 carbon length; and the halogen anion Hal " - by chloride or bromide.
- low-moor or medium-located peat containing in the composition preserves its intrinsic microbocenosis including hydrocarbon-oxidising microorganisms.
- hydrocarbon-oxidising microorganisms are formed and accumulated because of presence in the peat of saturated hydrocarbon compounds like vegetable waxes which serve as a nutrient medium for microorganisms.
- An important positive property of low-moor or medium-located peat is their capacity to keep nutritive elements which are inserted into the proposed composition in the form of nitrogen (ammonium and potassium saltpeters, carbamide) and phosphorous (various kinds of phosphates) fertilizers. The addition of these mineral fertilizers stimulates the microbial activity in a contaminated soil, raising thereby the intensity of biodegradation of oil and petroleum products.
- peat improves water-air properties of a soil polluted by oil and fuel hydrocarbons acting as an ameliorator.
- the relationship between processes of anaerobic and aerobic biodegradation of a contaminant changes in favour of the last process.
- the aerobic degradation proceeds with the higher speed than anaerobic one, thus increasing the extent of destruction of hydrocarbons.
- the aerobic biodegradation is more environmentally preferably for it results in the full mineralization of a hydrocarbon contaminant with formation of C0 2 and water, whereas during the anaerobic process the methane is eliminated that is a greenhouse gas, 7 times more hazardous than C0 2 .
- Peat and especially modified ZCR reduce the toxic effect of hydrocarbon contaminants on microorganisms being their sorbents. This effect is achieved due to sorption binding free (i.e. , the most toxic) molecules of a hydrophobic contaminant.
- the quantity of the inserted modified ZCR is varied according to a level of pollution of a soil site subjected to treatment.
- composition is preparee as follows.
- the non-sterile low-moor or medium-located peat are placed and the nitrogen and phosphorous fertilizers are added, then the mixture is intermixed to a homogeneous conditions, further the needed quantity of the modified ZCR is added, and then the mixing is continued up to an uniform allocation of ingredients in the composition.
- composition containing low-moor peat (98,989 weight %), ammonium nitrate (0,01 N, weight %), superphosphate (0,001 P2O5, weight %), and also zeolite-clay rock of the Tatarsko-Shatrashansky deposit (1 ,0 weight %) hydrophobized by hexadecyltrimethylammonium bromide (1 ,0 weight % from mass of the ZCR) were inserted into the upper (0-20 cm) soil layer polluted by diesel fuel.
- the upper soil layer was loosened and moistened. After 3 months, the residual quantity of diesel fuel in the soil was determined.
- the decrease of the concentration of the contaminant was not less than 90 % from its initial quantity.
- the composition containing low-moor peat (94,88 weight %), ammonium nitrate (0, 1 N, weight %), superphosphate (0,02 P2O5, weight %), and also zeolite- clay rock of the Tatarsko-Shatrashansky deposit (5,0 weight %) hydrophobized by hexadecyltrimethylammonium bromide (10,0 weight % from mass of the ZCR) were inserted into the upper (0-20 cm) soil layer polluted by diesel fuel. The upper soil layer was loosened and moistened. After 3 months, the residual quantity of diesel fuel in the soil was determined. The decrease of the concentration of the contaminant was not less than 94 % from its initial quantity.
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
- Detergent Compositions (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to environmental protection, in particular, to purification and remediation of soils and subsoils polluted by oil and petroleum products. The composition for soil clean-up contains non-sterile peat filler, nitrogen and phosphorous fertilizers (at the relationship N:P2O5=2,5-10: 1 ), and also zeolite-clay rock hydrophobized by a cationic surfactant (i.e. halogenide of tetra-substituted ammonium) at the following relationship of ingredients, weight %: Peat filler 98,989-84,79 Nitrogen fertilizer, N 0,01 -0,15 Phosphorous fertilizer, P205 0,001 -0,06 Zeolite-clay rock modified by the 1-15 cationic surfactant.
Description
Composition for purification of soils polluted by oil and petroleum products
The invention relates to environmental protection, in particular, to purification and remediation of soils and subsoils polluted by oil and petroleum products.
The composition is known (RU Pat. No. 2238807, publ. 10/27/2004) that contains oil-oxidizing microorganisms, an adsorbent, and a fertilizer. It contains peat (as the adsorbent and a source of microorganisms) and nitrogen- phosphorous-containing mineral fertilizer (that maintains 12-15 % of nitrogen and 1 ,8-2,3 % of phosphorus in 100 g of absolutely dry matter at the relationship of N:P = 1 :0, 15) at the following relationship of ingredients (weight %): nitrogen fertilizer, 24,25-44, 10; phosphate fertilizer, 6,50-8,80; peat (absolutely dry matter), 47, 10-69,25.
Oil-oxidizing microorganisms containing in the peat and in the fertilizer of known composition are intended for increasing oil biodegradation. Peat should provide oil retention and prevent its further extending in the soil due to its sorption properties. However, peat is an amphiphilic sorbent possessing significant hydrophilic properties along with hydrophobic ones, that is unfavorable for effective binding of oil hydrocarbons.
The composition is known (RU Pat. No. 2307707, publ. 10/10/2007) that contains non-sterile high-moor sphagnum moss or high-moor low-decomposed sphagnum peat and a natural polymer arabinogalactane (as an organic activator) at the following relationship of ingredients (weight %): non-sterile high-moor sphagnum moss or high-moor low-decomposed sphagnum peat, 99,9-99,5; arabinogalactane, 0,5-0, 1.
The high-moor sphagnum moss or high-moor sphagnum peat used in the reported composition have smaller sorption capacity towards oil hydrocarbons, than low-moor and medium-located peat owing to low specific surface, which is characteristic for low-decomposed plant materials. Besides, use of natural polymer arabinogalactane for environmental needs is inappropriately because of its costliness and low volumes of its production.
The method of obtaining a sorbent is known (RU Pat. No. 2191066, publ. 10/20/2002), where the fact of the matter is that a peat having the moisture of 35- 40 % (here low-moor peat and/or medium-located and high-moor peat are used) is
subjected to hydrophobization by thermal processing up to the moisture of 10-20 % followed by its separation and pressing peat fractions having the size of 0,5-3,0 mm under pressure of 16,0-18,0 MPa in the briquettes up to the moisture of 10-15 %. As hydrophobizating agents, water insoluble carbonaceous compounds (bitumens, waxes, lignines) act, that eliminate together with water from hard organic matter of peat under the high temperature without an access of air.
Deficiencies of this method are high power inputs on thermal processing and necessity of use of expensive special equipment. Besides, the sorbent obtained as a result of thermal processing loses the microflora containing in it, including hydrocarbon-oxidizing microorganisms needed for biodegradation.
The closest on technical matter and achieved result to the presented invention is the composition (USSR Pat. No. 704903, publ. 12/25/1979) containing 95,0-99,95 weight % of a cellulose-containing material and 0,05-5,0 weight % of an amino-containing modifier. The difference of that composition is the use of peat as the cellulose-containing matter, and the use of salts of aliphatic amines with organic chain of C8-C-|8 as the modifier.
The deficiencies of that composition are the following ones: i) the hydrophobization of the peat surface by salts of aliphatic amines is low effective owing to low retention of cations of the modifier by peat particles having a weak negative charge; ii) because of high solubility of salts of aliphatic amines they are easily flushed away from the peat surface and taken out into the lower soil layers and ground water; iii) aliphatic amines and their salts possess toxic effect, calling irritation of skin integuments, defeat of central nervous system and of alimentary tracts of people and animals (Harmful matters in the industry. Handbook for chemists, engineers and medical officers. Volume II. - Leningrad: Chemistry Press, 1976). In the result during the use of that composition its effectiveness sharply drops and the pollution of soil medium and ground water by toxic ingredients happens.
The purpose of the proposed invention is the creation of an environmentally- save composition intended for localization and biological destruction of hydrocarbon contaminants (oil and petroleum products) in soils. Thereby two processes most important for environment protection - i.e. sorption binding and contaminant utilization - are realized.
The technical result is attained by means of the fact that the composition for soil clean up contains non-sterile peat filler, nitrogen and phosphorous fertilizers (at the relationship of N:
1 ), and also zeolite-clay rock (ZCR) whose surface is hydrophobized by the cationic surfactant (the halide of tetra-substituted ammonium) at the following maintenance of ingredients, weight %:
Low-moor or medium-located peat 98,989-84,79
Nitrogen fertilizer, N 0,01 -0, 15
Phosphorous fertilizer, P205 0,001 -0,06
Zeolite-clay rock modified by the cationic surfactant 1 -15
The modified ZCR containing in the proposed composition is a strong sorbent capable to link hydrophobic contaminants at any moisture conditions, up to completely hydrated ones. This effect is provided with the fact that during modification, the hydrophilic centers on the surface of minerals (both zeolite and clayey ones) are bond with the positively charged functional groups of the cationic surfactant, i.e. quarternary nitrogen. As a result, the exterior surface of a mineral sorbent is completely coated by hydrophobic alkyl groups. The interaction of ZCR with the cationic surfactant is carried out due to the reaction of substitution of exchange cations of minerals (both zeolite and clayey ones) by cations of the surfactant. The formed complex possesses high stability and is characterized by the practically total absence of washout of the modifier. Hereby the toxicity of used quarternary ammonium salts is extremely low (for this reason they are widely applied in medicine, cosmetics, pharmacology, and household chemical goods specimens).
In order to vary the ZCR sorption capacity, the various quantities of the cationic surfactant - from 1 to 10 % from ZCR weight - are used. The cationic surfactant has the formula R R2R3R4N+Hal". The substituents R1 -R3 are represented by a pyridinium or alkyl groups with Ci - C4 carbon length and/or by a benzyl group; the substituents R4 - by alkyl groups with with Ci - C18 carbon length; and the halogen anion Hal " - by chloride or bromide.
The preparation of this composition does not demand any temperature treatment of a mixture or its separate ingredients and in the result, low-moor or
medium-located peat containing in the composition preserves its intrinsic microbocenosis including hydrocarbon-oxidising microorganisms. In the natural peat, such hydrocarbon-oxidising microorganisms are formed and accumulated because of presence in the peat of saturated hydrocarbon compounds like vegetable waxes which serve as a nutrient medium for microorganisms. An important positive property of low-moor or medium-located peat is their capacity to keep nutritive elements which are inserted into the proposed composition in the form of nitrogen (ammonium and potassium saltpeters, carbamide) and phosphorous (various kinds of phosphates) fertilizers. The addition of these mineral fertilizers stimulates the microbial activity in a contaminated soil, raising thereby the intensity of biodegradation of oil and petroleum products.
Along with the modified ZCR, peat improves water-air properties of a soil polluted by oil and fuel hydrocarbons acting as an ameliorator. In the result, the relationship between processes of anaerobic and aerobic biodegradation of a contaminant changes in favour of the last process. As it is known, the aerobic degradation proceeds with the higher speed than anaerobic one, thus increasing the extent of destruction of hydrocarbons. Besides, the aerobic biodegradation is more environmentally preferably for it results in the full mineralization of a hydrocarbon contaminant with formation of C02 and water, whereas during the anaerobic process the methane is eliminated that is a greenhouse gas, 7 times more hazardous than C02.
Peat and especially modified ZCR reduce the toxic effect of hydrocarbon contaminants on microorganisms being their sorbents. This effect is achieved due to sorption binding free (i.e. , the most toxic) molecules of a hydrophobic contaminant.
For the purpose of obtaining an optimum relationship between the efficiency of biodegradation of a contaminant and the expenses for implementation of environmental arrangements, the quantity of the inserted modified ZCR is varied according to a level of pollution of a soil site subjected to treatment.
The composition is preparee as follows.
In a blender the non-sterile low-moor or medium-located peat are placed and the nitrogen and phosphorous fertilizers are added, then the mixture is intermixed to a homogeneous conditions, further the needed quantity of the modified ZCR is
added, and then the mixing is continued up to an uniform allocation of ingredients in the composition.
Example 1 .
The usage of the composition under the low contamination level (1 g of oil hydrocarbons on 1 kg of soil).
The composition containing low-moor peat (98,989 weight %), ammonium nitrate (0,01 N, weight %), superphosphate (0,001 P2O5, weight %), and also zeolite-clay rock of the Tatarsko-Shatrashansky deposit (1 ,0 weight %) hydrophobized by hexadecyltrimethylammonium bromide (1 ,0 weight % from mass of the ZCR) were inserted into the upper (0-20 cm) soil layer polluted by diesel fuel. The upper soil layer was loosened and moistened. After 3 months, the residual quantity of diesel fuel in the soil was determined. The decrease of the concentration of the contaminant was not less than 90 % from its initial quantity.
Example 2.
The usage of the composition under the medium contamination level (10 g of oil hydrocarbons on 1 kg of soil).
The composition containing low-moor peat (94,88 weight %), ammonium nitrate (0, 1 N, weight %), superphosphate (0,02 P2O5, weight %), and also zeolite- clay rock of the Tatarsko-Shatrashansky deposit (5,0 weight %) hydrophobized by hexadecyltrimethylammonium bromide (10,0 weight % from mass of the ZCR) were inserted into the upper (0-20 cm) soil layer polluted by diesel fuel. The upper soil layer was loosened and moistened. After 3 months, the residual quantity of diesel fuel in the soil was determined. The decrease of the concentration of the contaminant was not less than 94 % from its initial quantity. Example 3.
The usage of the composition under the high contamination level (50 g of oil hydrocarbons on 1 kg of soil).
The composition containing low-moor peat (84,82 weight %), ammonium
nitrate (0, 15 N, weight %), superphosphate (0,03 P205, weight %), and also zeolite-clay rock of the Tatarsko-Shatrashansky deposit (15,0 weight %) hydrophobized by benzyltetradecyldimethylammonium bromide (5,0 weight % from mass of the ZCR) were inserted into the upper (0-20 cm) soil layer polluted by diesel fuel. The upper soil layer was loosened and moistened. After 3 months, the residual quantity of diesel fuel in the soil was determined. The decrease of the concentration of the contaminant was not less than 97% from its initial quantity.
Claims
1. Composition for purification of soils polluted by oil and petroleum products, different in that it contains peat filler, nitrogen and phosphorous fertilizers, and also zeolite-clay rock hydrophobized by a cationic surfactant, at the following relationship of ingredients, weight %: peat filler - 98,989-84,79; nitrogen fertilizer, N - 0,01 -0, 15; phosphorous fertilizer, P2O5 - 0,001 -0,06; zeolite-clay rock modified by the cationic surfactant - 1 -15.
2. Composition as is claimed in claim 1 wherein used peat filler is the non- sterile low-moor or medium-located peat.
3. Composition as is claimed in claim 1 wherein used a nitrogen fertilizer is the carbamide, ammonium or potassium saltpeter, and used a phosphorous fertilizer is phosphate of alkaline and/or alkali-earth metals.
4. Composition as is claimed in claim 1 wherein used cationic surfactant is the quarternary ammonium salt having the formula Ri R2R3R4N+Har, where the substituents R1 -R3 are represented by a pyridinium or alkyl groups with Ci - C4 carbon length and/or by a benzyl group; the substituents R4 - by alkyl groups with with d - C18 carbon length; and the halogen anion Hal " - by chloride or bromide.
5. Composition as is claimed in claim 4 wherein the content of a cationic surfactant is 1-10 % from the weight of the zeolite-clay rock.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010136180/13A RU2450872C2 (en) | 2010-08-27 | 2010-08-27 | Composition for cleaning soil contaminated with oil and oil products |
| RU2010136180 | 2010-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012026844A1 true WO2012026844A1 (en) | 2012-03-01 |
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ID=45723661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2011/000085 WO2012026844A1 (en) | 2010-08-27 | 2011-02-17 | Composition for purification of soils polluted by oil and petroleum products |
Country Status (2)
| Country | Link |
|---|---|
| RU (1) | RU2450872C2 (en) |
| WO (1) | WO2012026844A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2637131C1 (en) * | 2017-04-07 | 2017-11-30 | Общество с ограниченной ответственностью "Сити Строй" | Method for purification of soil polluted by oil and oil products using biopreparation |
| CN112048311A (en) * | 2020-09-30 | 2020-12-08 | 曾敦华 | Salt return blocking agent for desert and saline-alkali soil and preparation method and application thereof |
| CN113731372A (en) * | 2021-09-15 | 2021-12-03 | 陕西环保产业研究院有限公司 | Peat adsorbent for treating oil spill contaminated soil and treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2519997C2 (en) * | 2012-07-16 | 2014-06-20 | Общество с ограниченной ответственностью "Биохимические экотехнологии" | Composition for cleaning soil contaminated with oil and motor fuel |
| RU2556062C1 (en) * | 2014-02-04 | 2015-07-10 | Федеральное государственное казенное образовательное учреждение высшего профессионального образования "Волгоградская академия Министерства внутренних дел Российской Федерации" (Волгоградская академия МВД России) | Composition for purification and remediation of soil from petroleum pollution |
| RU2620658C1 (en) * | 2016-04-08 | 2017-05-29 | Федеральное государственное бюджетное учреждение науки Геофизический институт Владикавказского научного центра Российской академии наук (ГФИ ВНЦ РАН) | Method for recovery of oil-contaminated land |
| RU2754448C1 (en) * | 2021-02-01 | 2021-09-02 | федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный аграрный университет" (ФГБОУ ВО Волгоградский ГАУ) | Method for cleaning and recultivating oil-contaminated soils |
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|---|---|---|---|---|
| US3843517A (en) * | 1970-01-08 | 1974-10-22 | Grace W R & Co | Methods for elimination of oil slicks |
| RU2238807C2 (en) * | 2001-07-18 | 2004-10-27 | Сибирский научно-исследовательский институт торфа | Composition for soil purification from oil pollutions |
| RU2283195C2 (en) * | 2004-07-05 | 2006-09-10 | Общество С Ограниченной Ответственностью "Научно-Техническое Объединение "Приборсервис" | Method of recultivation of soil contaminated with oil and oil products |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU704903A1 (en) * | 1977-02-15 | 1979-12-25 | Институт Торфа Ан Белорусской Сср | Adsorbent for purifying water from petroleum products oils and hydrocarbons |
| GB2440331A (en) * | 2006-07-25 | 2008-01-30 | Univ Newcastle | Treating contaminated soil with biodiesel |
| RU2396133C2 (en) * | 2008-10-29 | 2010-08-10 | Учреждение Российской академии наук Центр геофизических исследований Владикавказского научного центра РАН и Правительства Республики Северная Осетия-Алания (ЦГИ ВНЦ РАН и РСО-А) | Method of oily earth recovery |
-
2010
- 2010-08-27 RU RU2010136180/13A patent/RU2450872C2/en active
-
2011
- 2011-02-17 WO PCT/RU2011/000085 patent/WO2012026844A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3843517A (en) * | 1970-01-08 | 1974-10-22 | Grace W R & Co | Methods for elimination of oil slicks |
| RU2238807C2 (en) * | 2001-07-18 | 2004-10-27 | Сибирский научно-исследовательский институт торфа | Composition for soil purification from oil pollutions |
| RU2283195C2 (en) * | 2004-07-05 | 2006-09-10 | Общество С Ограниченной Ответственностью "Научно-Техническое Объединение "Приборсервис" | Method of recultivation of soil contaminated with oil and oil products |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2637131C1 (en) * | 2017-04-07 | 2017-11-30 | Общество с ограниченной ответственностью "Сити Строй" | Method for purification of soil polluted by oil and oil products using biopreparation |
| CN112048311A (en) * | 2020-09-30 | 2020-12-08 | 曾敦华 | Salt return blocking agent for desert and saline-alkali soil and preparation method and application thereof |
| CN113731372A (en) * | 2021-09-15 | 2021-12-03 | 陕西环保产业研究院有限公司 | Peat adsorbent for treating oil spill contaminated soil and treatment method |
| CN113731372B (en) * | 2021-09-15 | 2023-06-09 | 陕西环保产业研究院有限公司 | Peat adsorbent for treating spilled oil polluted soil and treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2010136180A (en) | 2012-03-10 |
| RU2450872C2 (en) | 2012-05-20 |
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