EP3946771A1 - Utilisation d'au moins une huile végétale époxydée ou un de ses dérivés dans des sols pollués - Google Patents
Utilisation d'au moins une huile végétale époxydée ou un de ses dérivés dans des sols polluésInfo
- Publication number
- EP3946771A1 EP3946771A1 EP20728533.9A EP20728533A EP3946771A1 EP 3946771 A1 EP3946771 A1 EP 3946771A1 EP 20728533 A EP20728533 A EP 20728533A EP 3946771 A1 EP3946771 A1 EP 3946771A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- epoxidized
- vegetable oil
- oil
- epoxidized vegetable
- use according
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Definitions
- the present invention relates to the use of at least one epoxidized vegetable oil and / or at least one of its derivatives as a source of carbon in polluted soils, in particular for the bioremediation of polluted soils, more particularly to improve the bioremediation of polluted soils.
- the invention also relates to a method of bioremediation of polluted soil (s) comprising at least one step of injecting into a polluted soil an organic or hydro-organic composition comprising at least one epoxidized vegetable oil and / or at least one of its derivatives.
- Such processes have the advantage of being able to be operated on a large scale while being based on natural phenomena in order to reduce the quantities of extractable pollutants below the standards established in a period of time limiting the risks of dispersion or more contamination. wide.
- bioremediation typically designates biological processes using living organisms, most often microscopic, such as bacteria, microalgae or fungi, or even organisms such as plant species (in the case of phytoremediation), in order to degrade pollutants.
- bioremediation processes are treatments capable of taking advantage of the natural capacity possessed by organisms, in particular microorganisms, to decompose polluting substances. Bioremediation can take place under aerobic conditions and in some cases under anaerobic conditions. [0008] Bioremediation processes make it possible in particular to effectively clean up sites, such as soil or groundwater, most often contaminated by the presence of petroleum hydrocarbons or chlorinated solvents, or others by breaking them down thanks to the presence of bacteria.
- Bioremediation processes are generally based on organisms already present in contaminated sites (called indigenous organisms) or added to them (exogenous organisms adapted to the pollutants to be treated). Alternatively, such organisms can be collected from the contaminated site, cultivated in the laboratory and then reintroduced into the soil to increase the degradation of the contaminants.
- the natural capacity possessed by microorganisms, in particular bacteria, to biologically degrade the polluting substances present in contaminated sites can be increased thanks to the supply of nutrients, such as for example fertilizers, sources of carbon, trace elements and others, as well as possibly by adjusting the conditions of the medium, such as humidity and / or the oxidation-reduction potential of the medium.
- nutrients such as for example fertilizers, sources of carbon, trace elements and others
- the fertilizers preferably include nitrates, such as ammonium nitrates, nitrophosphates, ammonium phosphate sulfate, ammonium sulfate, calcium ammonium nitrates, calcium nitrate, sodium phosphate. diammonium, potassium chloride, monoammonium phosphate, sulphate of potash, sulphate of potash and magnesium, simple superphosphate, triple superphosphate, urea, sulfur, polyhalite and other complexes or mixture of fertilizers that contain several elements, for example those known by the acronym NPK.
- nitrates such as ammonium nitrates, nitrophosphates, ammonium phosphate sulfate, ammonium sulfate, calcium ammonium nitrates, calcium nitrate, sodium phosphate. diammonium, potassium chloride, monoammonium phosphate, sulphate of potash, sulphate of potash and magnesium, simple superphosphat
- the in situ activity of microorganisms in particular bacteria, can be stimulated by the addition of nutrients which will increase their development in order to improve the bioremediation of polluted sites.
- Such nutrients are preferably biodegradable and can be chosen from sugars, for example glucose, lactose or molasses, chitin, or even vegetable oils, for example soybean oil.
- patent application WO2004020339 describes the use of an emulsion containing soybean oil in contaminated soil and groundwater in order to promote bioremediation by microorganisms.
- patent application WO2014152350 describes compositions comprising in particular spirulina and lecithin in the form of powders.
- nutrients having a low viscosity can diffuse too quickly in the media to be decontaminated, especially in the case of injection into permeable soils, which has the disadvantage that the latter are not sufficiently available to increase the development of microorganisms, in particular bacteria.
- one of the objectives of the present invention is to provide one or more compounds having qualities of biodegradability, bioavailability and diffusion in the media to be decontaminated which are satisfactory in order to effectively stimulate the activity in situ microorganisms present in contaminated sites.
- one of the objectives of the present invention is to replace the compounds conventionally used as nutrients during bioremediation operations of polluted sites, in order to improve the bioremediation of said sites to be decontaminated, in particular of soils to clean up.
- a particular subject of the present invention is therefore the use of at least one epoxidized vegetable oil and / or at least one of its derivatives as a source of carbon in polluted soils. More particularly, the subject of the invention is the use of at least one epoxidized vegetable oil and / or of at least one of its derivatives in polluted soils, as a source of carbon for microorganisms, in particular bacteria.
- the use of at least one epoxidized vegetable oil and / or at least one of its derivatives as a carbon source makes it possible to effectively increase the development of microorganisms, in particular bacteria, and to stimulate their activity in situ for the bioremediation of sites to be decontaminated, and in particular with a view to improving the bioremediation of sites to be decontaminated.
- the epoxidized vegetable oils or derivatives of epoxidized vegetable oils exhibit an advantageous diffusion in the soils to be decontaminated, in particular in the soils having a more or less important permeability, as well as suitable parameters of biodegradability and bioavailability. in order to effectively stimulate the natural capacity of microorganisms to biologically degrade polluting substances found in such soils.
- Epoxidized vegetable oils as well as epoxidized vegetable oil derivatives have the particular advantage of being more effective as nutrients, providing a source of carbon for microorganisms in soils having more or less permeability. important, than their non-epoxidized counterparts, in particular compared to an identical vegetable oil free of group
- epoxidized vegetable oils as well as epoxidized vegetable oil derivatives diffuse more slowly in soils having a greater or lesser permeability which makes them more available biologically as a source of carbon for microorganisms. , in particular bacteria, that an identical vegetable oil free of epoxy group.
- the epoxidized vegetable oils and / or their derivatives used according to the invention make it possible to further stimulate the in situ activity of microorganisms, in particular bacteria, by increasing their development, and to further increase bioremediation. soils to be decontaminated with respect to a vegetable oil free of epoxy group.
- the epoxidized vegetable oils or their derivatives according to the invention can be easily formulated in a water-in-oil or oil-in-water emulsion, and prove to be more stable than a conventional vegetable oil free. epoxy group formulated under the same conditions.
- epoxidized vegetable oils and / or their derivatives may turn out to be less soluble in water than certain nutrients such as molasses which also makes them more efficient in permeable soils.
- the epoxidized vegetable oils and / or their derivatives used according to the invention are more advantageous as a carbon source for microorganisms, in particular for bacteria, than the nutrients conventionally used up to present. More generally, thanks to their viscosity, their solubility, their biodegradability as well as their bioavailability, epoxidized vegetable oils and / or their derivatives according to the invention are nutrients which can be used in a versatile manner depending on their formulations and applications, that is, their parameters allow them to adapt effectively to different types of soil.
- Another object of the present invention relates to a process for the bioremediation of polluted soils comprising at least one step of injecting into a soil an organic or hydro-organic composition comprising at least one epoxidized vegetable oil and / or at least an epoxidized vegetable oil derivative.
- an organic or hydro-organic composition comprising at least one epoxidized vegetable oil and / or at least one of its derivatives as defined above in a polluted soil allows to increase the 'in situ activity of microorganisms and to increase their ability to biologically degrade the pollutants present in such soil.
- the process according to the invention makes it possible to stimulate the in situ biodegradation of polluted soils.
- the method according to the invention makes it possible to increase the development of microorganisms, in particular bacteria, in polluted soils and, consequently, to accelerate bioremediation.
- the present invention relates to the use of at least one epoxidized vegetable oil and / or at least one of its derivatives as a source of carbon in polluted soils.
- the epoxidized vegetable oil and / or a derivative thereof is (or are) used as a source of carbon for microorganisms, in particular for bacteria, present in polluted soils.
- the epoxidized vegetable oil and / or one of its derivatives is (or are) used as a carbon source to stimulate and thus improve the in situ activity of bacteria.
- epoxidized vegetable oil and / or a derivative thereof is (or are) used as a source of carbon to increase the development of bacteria and stimulate their natural ability to degrade biologically. polluting substances found in contaminated soils.
- the bacteria or bacteria present in the polluted soils can be of any known genus, bacteria of the genus Pseudomonas, Achromobacter, Arthrobacter, Bacillus, Lactobacillus, Micrococcus, Nocardia, Vibrio, Acinetobacter, Brevibacterium, Corynebacterium, Flavobacterium, Leucothrix, Rhizobium, Spirillum, Xanthomonas, Alcaligenes, Cytophaga, Thermomicrobium, Klebsiella, Enterobacter, Blastochlorer, Thaurea, Azoarcus, Dechloromonas, Geobacter, Sphingomonas, Desborobacter, Deulfobacter or Desulfobacter, Desulospillo ⁇ 1 ⁇ 2, Desulospillo ⁇ 1 or Deshalospillo ⁇ 1 combination of two or more of these.
- the bacteria or bacteria present in the polluted soils is (or are) preferably anaerobic bacteria.
- the epoxidized vegetable oil and / or a derivative thereof is (or are) used to improve the bioremediation of polluted soils.
- the epoxidized vegetable oil and / or a derivative thereof is (or are) used to accelerate the bioremediation of polluted soils.
- the polluted soil (s) likely to be treated by the present invention comprises (s) one or more organic polluting substances.
- the polluted soil (s) likely to be treated by the present invention comprises (s) one or more organic polluting substance (s) chosen ( s) in the group consisting of hydrocarbons, in particular linear C6-C30 hydrocarbons, cyclic hydrocarbons, polycyclic hydrocarbons, solvents, in particular halogenated solvents, or their mixtures, and in particular chlorinated solvents, or their mixtures.
- organic polluting substance chosen ( s) in the group consisting of hydrocarbons, in particular linear C6-C30 hydrocarbons, cyclic hydrocarbons, polycyclic hydrocarbons, solvents, in particular halogenated solvents, or their mixtures, and in particular chlorinated solvents, or their mixtures.
- the polluted soil (s) capable of being treated by the present invention comprises (s) one or more selected organic polluting substance (s) (s) ( s) in the group consisting of hexane, octane, benzene, toluene, ethylbenzene, xylene, polycyclic aromatic hydrocarbons (PAHs) such as anthracene, naphthalene, pyrene, tetracene, coronene, benzopyrene, chrysene, phenanthrene, polychlorinated biphenyls (PCBs), chlorinated solvents, such as for example tetrachlorethylene, trichlorethylene, and mixtures thereof.
- PHAs polycyclic aromatic hydrocarbons
- PCBs polychlorinated biphenyls
- the polluted soil (s) capable of being treated by the present invention comprises (s) one or more polluting substance (s) organic (s) chosen from the group consisting of hydrocarbons, preferably hexane, octane, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), halogenated solvents, in particular chlorinated solvents, and their mixtures.
- polluting substance s
- organic chosen from the group consisting of hydrocarbons, preferably hexane, octane, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), halogenated solvents, in particular chlorinated solvents, and their mixtures.
- the polluted soil (s) likely to be treated by the present invention comprises (s) one or more organic polluting substance (s) ) chosen from halogenated solvents, in particular chlorinated solvents, and mixtures thereof.
- Epoxidized vegetable oils and / or their epoxidized vegetable oil derivatives which can be used in the context of the present invention are effective for all ranges of permeability of soils, and more particularly for permeable to very permeable soils.
- the epoxidized vegetable oil and / or its derivatives have (have) a viscosity ranging from 4 mPa.s to 700 mPa.s, in particular ranging from 25 mPa.s to 650 mPa.s, measured at a temperature of 25 ° C, as measured for example using an Ostwald type viscometer.
- the epoxidized vegetable oil (s) used according to the invention is or are in particular liquid triglycerides of unsaturated fatty acids C6-C30, preferably C10-C24, in particular in C12-C22, and which have undergone an epoxidation reaction, that is to say comprising at least one epoxide function.
- the epoxidized vegetable oils according to the invention are preferably prepared from:
- unsaturated fatty acids means that the fatty chain contains at least one unsaturation, preferably in the form of a double bond, which can be involved in an epoxidation reaction as indicated above.
- the epoxidized vegetable oil (s) used (s) according to the invention comprises (s) in its or their structure at least one epoxy group.
- the vegetable oils according to the invention are in particular liquid triglycerides of unsaturated fatty acids C6-C30, preferably C14-C22, in particular C12-C22, comprising in their structure at minus one epoxy group.
- liquid is meant within the meaning of the present invention that the vegetable oil is liquid at a temperature of 25 ° C and at atmospheric pressure (760 mm Hg, ie 1013.25 hPa).
- the epoxidized vegetable oil (s) according to the invention comprises (s) a number of epoxy groups ranging from 1 to 9, preferably ranging from 1 to 6, preferably still going from 2 to 6.
- the epoxidized vegetable oil used according to the invention is chosen from the group consisting of epoxidized soybean oil, epoxidized palm oil, epoxidized rapeseed oil, epoxidized linseed oil, epoxidized sunflower oil, epoxidized peanut oil, epoxidized camphor oil, epoxidized castor oil, and mixtures thereof.
- the epoxidized vegetable oil used in the invention is the epoxidized soybean oil, particularly epoxidized soybean oil sold under the trade name Vikoflex ® 7177 (obtained in the presence of formic acid) and Vikoflex ® 7170 (obtained in the presence of acetic acid) by the company Arkema.
- an epoxidized vegetable oil derivative is understood to mean a compound which has been synthesized from a vegetable oil as described above.
- an epoxidized vegetable oil derivative corresponds to a vegetable oil which has been chemically modified, or a compound obtained after opening one or more epoxy rings (i.e. epoxy group) of said epoxidized vegetable oil.
- the present invention relates to the use of at least one epoxidized vegetable oil and / or at least one epoxidized vegetable oil ester (trans-esterification of vegetable oil).
- the epoxidized vegetable oil ester used in the context of the present invention is more particularly chosen from the group consisting of methyl esters of epoxidized vegetable oil.
- the epoxidized vegetable oil ester used according to the invention is a methyl ester of epoxidized soybean oil, in particular that sold under the trade names ® Vikoflex 7010 by Arkema.
- the present invention relates to the use of at least one epoxidized vegetable oil and / or at least one ester of an epoxidized vegetable oil as a source of carbon in polluted soils. More preferably, the invention relates to the use of an epoxidized soybean oil and / or an epoxidized soybean oil ester as a source of carbon in polluted soils.
- the epoxidized soybean oil and / or the epoxidized soybean oil ester is used to improve the bioremediation of polluted soils, in particular to accelerate the bioremediation of soils.
- the invention relates to the use of epoxidized soybean oil as a carbon source in polluted soils.
- the invention also relates to the use of an ester of epoxidized soybean oil as a carbon source in polluted soils.
- the epoxidized soybean oil methyl ester is used as a carbon source in polluted soils.
- the invention also relates to the use of an epoxidized soybean oil and an ester of an epoxidized soybean oil as a source of carbon in polluted soils.
- the epoxidized vegetable oil and / or one of its derivatives can be used (s) as a source of carbon in polluted soils in combination with one or more other nutrients.
- these nutrients are chosen from the group consisting of sugars or vegetable oils free from epoxy groups.
- the invention also relates to a method of bioremediation of polluted soils comprising at least one step of injecting into at least one zone of polluted soil, as defined above, or near such a zone, of a composition, organic or hydroorganic, comprising at least one epoxidized vegetable oil and / or one of its derivatives as defined above.
- the soil comprises one or more organic substances as defined above.
- the epoxidized vegetable oil and / or one of its derivatives is in a content ranging from 1 to 100% by weight, preferably ranging from 5 to 100% by weight, preferably ranging from 10 to 100% by weight, preferably ranging from 20% to 100% by weight relative to the total weight of the composition.
- composition can also comprise one or more nutrients such as sugars or vegetable oils free from epoxy groups.
- the composition comprises at least one epoxidized vegetable oil and / or at least one ester of an epoxidized vegetable oil.
- Emulsions comprising 30 g of tap water, 70 g of organic compound (soybean oil, commercial products Vikoflex 7177 and Vikoflex ® ® 7170) and 0.1 g of a dye (Solvent Violet 59, CI62025, CAS 6408-72-6) were prepared by rapid stirring for a period of 15 minutes in a closed container using a bar magnet.
- the dye used is organic in nature and is only soluble in the organic phase of the emulsions prepared.
- the dye is used to visualize the state of progress of the organic phase. A verification by total carbon analysis confirmed that very little (content less than
- a chromatography column (diameter 3 cm), with sintered glass disc and stopcock was filled (stopcock closed) with 10 cm of soil from Saint-Auban (valley of the
- the column was filled with water to the upper level of the ground.
- the chromatography column was then pressurized with a constant air flow, controlled by a Brooks R2 15C flowmeter.
- a stopwatch was started when the tap was opened in order to measure the time for the emulsion to percolate through the soil.
- epoxidized soybean oil marketed under the name Vikoflex ® 7177
- epoxidized soybean oil marketed under the name Vikoflex ® 7170
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1903382A FR3094244B1 (fr) | 2019-03-29 | 2019-03-29 | Utilisation d’au moins une huile végétale époxydée ou un de ses dérivés dans des sols pollués |
| PCT/FR2020/050584 WO2020201657A1 (fr) | 2019-03-29 | 2020-03-18 | Utilisation d'au moins une huile végétale époxydée ou un de ses dérivés dans des sols pollués |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3946771A1 true EP3946771A1 (fr) | 2022-02-09 |
Family
ID=67742637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20728533.9A Withdrawn EP3946771A1 (fr) | 2019-03-29 | 2020-03-18 | Utilisation d'au moins une huile végétale époxydée ou un de ses dérivés dans des sols pollués |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20220176427A1 (fr) |
| EP (1) | EP3946771A1 (fr) |
| FR (1) | FR3094244B1 (fr) |
| WO (1) | WO2020201657A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR102020020168A2 (pt) * | 2020-10-01 | 2022-04-12 | Upl Corporation Ltd | Composição fotoestável e método de proteção de um herbicida triazolona de danos causados por luz |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6806078B2 (en) | 2002-08-27 | 2004-10-19 | William A. Newman | Substrate and method for anaerobic remediation |
| JP2008037921A (ja) * | 2006-08-02 | 2008-02-21 | Meidensha Corp | 絶縁性高分子材料組成物 |
| TW200904365A (en) * | 2007-07-03 | 2009-02-01 | Biosphere Ind Llc | Biodegradable and compostable composition having improved physical and chemical properties |
| US9139458B2 (en) * | 2013-03-15 | 2015-09-22 | Janet Angel | Compositions and methods of use |
| US20150076398A1 (en) * | 2013-09-16 | 2015-03-19 | John Archibald | Bioremediation of soil and groundwater |
| CN106479507A (zh) * | 2016-09-14 | 2017-03-08 | 浙江阿凡柯达环保科技有限公司 | 一种土壤复合修复剂及其在去除土壤中重金属的应用 |
-
2019
- 2019-03-29 FR FR1903382A patent/FR3094244B1/fr not_active Expired - Fee Related
-
2020
- 2020-03-18 US US17/442,910 patent/US20220176427A1/en not_active Abandoned
- 2020-03-18 EP EP20728533.9A patent/EP3946771A1/fr not_active Withdrawn
- 2020-03-18 WO PCT/FR2020/050584 patent/WO2020201657A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020201657A1 (fr) | 2020-10-08 |
| FR3094244A1 (fr) | 2020-10-02 |
| FR3094244B1 (fr) | 2022-07-29 |
| US20220176427A1 (en) | 2022-06-09 |
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