WO2000040666A1 - Procede et composition de traitement de matieres contaminees par des hydrocarbures - Google Patents

Procede et composition de traitement de matieres contaminees par des hydrocarbures Download PDF

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Publication number
WO2000040666A1
WO2000040666A1 PCT/CA1999/001239 CA9901239W WO0040666A1 WO 2000040666 A1 WO2000040666 A1 WO 2000040666A1 CA 9901239 W CA9901239 W CA 9901239W WO 0040666 A1 WO0040666 A1 WO 0040666A1
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WO
WIPO (PCT)
Prior art keywords
hydrocarbon
composition
test
mix
contaminant
Prior art date
Application number
PCT/CA1999/001239
Other languages
English (en)
Inventor
Paul Sicotte
Ari Laurell
Original Assignee
Unotec Services International Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CA002257706A external-priority patent/CA2257706C/fr
Application filed by Unotec Services International Inc. filed Critical Unotec Services International Inc.
Priority to BR9917122-8A priority Critical patent/BR9917122A/pt
Priority to AU18526/00A priority patent/AU767753B2/en
Priority to APAP/P/2001/002209A priority patent/AP2001002209A0/en
Priority to EP99962017A priority patent/EP1147159A1/fr
Priority to NZ512641A priority patent/NZ512641A/en
Priority to EA200100740A priority patent/EA002537B1/ru
Priority to JP2000592366A priority patent/JP2002534254A/ja
Priority to MXPA01007617A priority patent/MXPA01007617A/es
Publication of WO2000040666A1 publication Critical patent/WO2000040666A1/fr
Priority to NO20013286A priority patent/NO20013286L/no

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Classifications

    • 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
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • 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

Definitions

  • the present invention relates to methods for treating materials contaminated with hydrocarbon substances and to compositions for such method.
  • the invention is particularly related to oil contamination in drill cuttings generated from drilling well bores.
  • Oil contamination of land and water has become a major environmental problem. Many instances have been encountered where ecosystems have been severely damaged due to the accidental spillage of oils or other hydrocarbon compounds.
  • One area where oil contamination is regularly encountered is in bore-hole drilling systems either on or offshore.
  • oil contaminated drill cuttings are brought to the surface and collected.
  • the cuttings and other material brought to the surface must be treated to remove the oil contaminants in order to prevent them from seeping into the soil or from being dumped into the water.
  • various solutions have been proposed such as, for example, burning the cuttings or washing them with a detergent solution.
  • the first method results in both safety and environmental risks.
  • the second method involves a long process time and, possibly, further contamination risks depending upon the detergent used.
  • US patent 5,395,535 teaches a process for removing hydrocarbon materials from water or land comprising spreading dried plant or vegetable matter over the spill.
  • Cotton gin "trash" or waste is indicated as material for use in this process.
  • the cotton material is spread over the oil spill to absorb and retain the contaminant.
  • the material with absorbed oil is then allowed to ferment wherein bacteria indigenous to the cotton material biodegrade the hydrocarbon contaminants.
  • US patent 5,635,392 also teaches a process for treating oil-contaminated material wherein microbial action is used to remove the contaminant.
  • a nutrient mixture along with a microbial inoculum, is taught for addition to hydrocarbon contaminated material to stimulate the growth of the culture. In such manner, the contaminant is removed from the system.
  • the present invention seeks to provide a means of: - on-site containment and treatment of drilling residue.
  • the present invention provides a composition for treating hydrocarbon-contaminated material including a protein component and a bulking component.
  • the invention provides a process for treating hydrocarbon contaminated material with a treatment composition comprising a protein component, a bulking agent and a microbial culture capable of metabolizing the hydrocarbon contaminant, the process comprising the steps of: 1) contacting the material with the treatment composition to immobilize the hydrocarbon contaminant; and,
  • Figure 1 illustrates the total extractable hydrocarbon mass fraction profiles on Day 0 and Day 41 under different additive conditions in the biodegradation tests.
  • Figure 2 illustrates the changes in total extractable hydrocarbon mass fractions after 41 days under different additive conditions in the biodegradation tests.
  • Figure 3 illustrates the changes in initial total extractable hydrocarbon mass fractions after 41 days under control additive conditions in the biodegradation tests.
  • Figure 4 illustrates the oxygen uptake rate under different additive conditions in the biodegradation tests.
  • Figure 5 illustrates the carbon dioxide production rate under different additive conditions in the biodegradation tests.
  • Figures 6 and 7 illustrate the hydrocarbon reduction during the bioremediation field plot tests.
  • Hydrocarbon contaminants according to the invention include any liquid contaminant that is organic, leachable and hydrophobic in nature such as gasoline, oil, creosote, etc. Such contaminants may be found as spills on water or land or in soil substrates, i.e. litter, clay, shale, drill cuttings etc., contaminated by such liquid contaminants.
  • the present invention will be described in relation to the treatment of drill cuttings. However, it will be appreciated that a variety of applications are possible for the invention.
  • the present invention provides, in one embodiment, a treatment composition for treating material contaminated by hydrocarbon contaminants as described above whereby such contaminants are safely removed by biodegradation.
  • the composition of the invention comprises, as the active ingredients, a protein component and a bulking agent.
  • the protein component and bulking agent are organic in nature.
  • the treatment composition according to a preferred embodiment of the invention is characterized by its ability to:
  • the protein component of the composition serves various purposes. Firstly, it provides a source of indigenous microorganisms that have the capability of biodegrading hydrocarbon contaminants. Secondly, the protein component serves as a source of nutrients for the microorganisms conducting the biodegradation process. In another embodiment, the required microorganisms may be comprise a separate additive to the treatment composition to provide the required microbial culture or to supplement or complement the culture included in the protein component. Whether or not the protein component provides a source of microorganisms is dependent upon the selection of the protein material. For example, it is mentioned above that cotton waste provides a source of indigenous hydrocarbon consuming microorganisms. Similar proteinaceous sources of microorganisms may also be used. For example, suitable sources for the protein component of the present invention include canola (or rape), soy, cotton, corn, or peanut material or from other protein based material or any combination thereof. Generally, the protein component comprises organic protein meal.
  • the protein component of the invention is characterized by its ability to absorb or adsorb the hydrocarbon contaminant. This sorptive capacity aids in immobilizing the hydrocarbon thereby preventing leaching of such compounds out of the containment mix, which is the combination of the contaminated material and treatment composition. Therefore, the protein component of the invention is characterized by its ability to:
  • the bulking agent is preferably organic in nature.
  • the bulking agent may comprise, for example, wood shavings, peat moss, straw, etc., or any combination thereof.
  • the main function of the bulking agent is to build structure in the containment mix and secondly to provide additional contaminant absorbency. Such structure results in efficient gas or air exchange properties. This is important since in biodegradation processes, aerobic conditions are necessary to maintain the desired accelerated levels of microbial activity. Such conditions improve the efficiency of biodegradation, which is important when dealing with hydrocarbon contaminants.
  • a single type of bulking agent or a combination of several may be used. Ideally, the bulking agents are chosen on their ability to reduce the overall bulk density of the containment mix and to provide appropriate conditions for microbial activity.
  • the invention provides a process for treating hydrocarbon- contaminated material using a composition as described above.
  • the process immobilizes and stabilizes the contaminants in a homogeneous containment mixture. This is accomplished by contacting the contaminated material with the treatment composition of the invention as described above. Such contacting may be accomplished in a number of ways including mechanical or physical blending or mixing.
  • the contacting phase serves to: - Achieve homogeneity (contaminant immobilization) on a macroscopic as well as microscopic level;
  • microorganism inocula and/or additives (such as fertilizers, bionutrients, slow release oxygen agents, bioaugmentation agents, hydrocarbon washing/chain-severing agents, etc.) intended to stimulate or accelerate microbial activity in the containment mix.
  • additives such as fertilizers, bionutrients, slow release oxygen agents, bioaugmentation agents, hydrocarbon washing/chain-severing agents, etc.
  • the blending or mixing phase provides an opportunity to "wash” or dissolve soluble salts, metals, and other analytes from the contaminated material in order to alter the electrical conductivity, sodium adsorption ratio and pH of the containment mix produced.
  • the immobilization step is used to prevent or reduce any leaching of the contaminant.
  • leaching is quantified by the Toxicity Characteristic Leaching Procedure (TCLP) which is a standardized leaching analysis test accepted by regulatory agencies. It is designed to determine the mobility of both organic and inorganic analytes present in liquid, solid and multiphase wastes. The test is conducted as follows: for wastes containing greater than or equal to 0.5% solids, a minimum of lOOg of solid phase sample is mixed with a volume of water equal to 20 times the weight of the solid phase. In this case, water is referred to as the extraction fluid. Characteristically, the water must be purified, de-ionized and organic-free.
  • Sample preparation requires crushing, grinding and cutting if solids are greater than 9.5 mm in size.
  • the mixture is placed into a specialized bottle extraction vessel with a minimum capacity of 2L.
  • the vessel is then placed into an agitation apparatus that rotates the vessel in an end-over-end fashion at 30 rpm for 18 hours.
  • the mixture is poured over a 0.6 to 0.8 ⁇ m glass fiber filter.
  • the leachate is collected and analyzed for the presence of hydrocarbons.
  • microbial activity in the containment mix i.e. the mixture of the contaminated material, treatment composition and any other additives
  • the source of the microorganisms for the biodegradation phase may be inherent or introduced.
  • the protein component and bulking agent(s) constitute a primary source of indigenous microorganisms.
  • manure, sewer sludge, or any other microbially active liquids or soils can also be used to introduce naturally-occurring microorganisms, capable of metabolizing hydrocarbons, to the containment mix during or following mixing.
  • genetically synthesized microbial inocula or cultures can also be used to introduce additional microorganisms into containment mixes during or following mixing activities.
  • hydrocarbon contaminants are disposed of safely without any further processing while limiting or preventing any leaching of the contaminants during the course of biodegradation.
  • the invention has been described in connection with treating contaminated drill cuttings.
  • the process and composition of the invention can similarly be applied to oil spills on land or water or to other material affected by hydrocarbon contamination.
  • a treatment mixture is placed into a sealed container.
  • Water is added at a ratio of 5 parts solution to 1 part solids (residue), according to the following calculation: Conversion: An average of 500 mm of annual precipitation occurs over an area with a maximum depth of 10 cm (100 mm), therefore the conversion ratio is 500:100 or the equivalent of 5 : 1 ratio of water to mixture.
  • the Roof-Top Leach Tray has a design similar to that of a steep pitched roof (30% slope) intended to simulate a worst case scenario.
  • a volume of 20 L of the sample mix is spread into each side of the leach tray (having dimensions 45 cm x 45 cm or 20 cm x 20 cm) up to a maximum thickness of 10 cm.
  • Mixtures are held in place by screens that prevent the migration of solids but allow water flow freely.
  • water is sprayed over the mixtures.
  • the objective of the above analytical testing was to use the presence or absence of detectable hydrocarbons in liquids and solids following leaching or filtration, to indicate how effectively rape meal (canola meal) and cuttings can immobilize hydrocarbons.
  • the hydrocarbon concentration of leachates and filtrates is inversely proportional to the amount of hydrocarbons immobilized.
  • the greatest concentration of hydrocarbons (8.7%) occurred in the sample of raw (untreated) residue. This value is somewhat conservative compared to average retort results of 14%. The difference may be caused by the dilution resulting from varying amounts of cellulose among the samples as contributed by the hog fuel constituent.
  • TPH testing is widely used as an accurate analysis of the presence of petroleum hydrocarbons, one limitations does exist.
  • the TPH or MOG (mineral/oil/grease) test is non-selective. It will not differentiate between the different types of petroleum hydrocarbons such as the lighter aromatics (hydrocarbon rings) and the heavier aliphatics (hydrocarbon chains).
  • the present invention is concerned with the immobilization of all petroleum hydrocarbons present in drilling residue, the TPH test analysis is sufficient for the purposes of illustration.
  • Re- Activated Sludge obtained from the City of Calgary sewage treatment plant intended to provide an initial inoculum of bacteria, potentially with hydrocarbon-degrading ability.
  • Biocat 4000 an organic and inorganic liquid nutrient source intended to provide a complete nutrient source to support microbial growth and hydrocarbon biodegradation activity.
  • Percarbonate (OX) - a solid oxygen release compound intended to provide more oxygen for faster biodegradation rates.
  • test was run for six weeks (41 days) at room temperature without mixing to assess the effect of the various additives in enhancing the hydrocarbon biodegradation rate over that of a control (no additives).
  • TLB Total heterotrophic bacteria
  • MPN Most Probable Number
  • HDB Hydrocarbon-degrading bacteria
  • each reactor was exposed to the room light for about 8 hours a day.
  • the gasket lids were placed on the reactors and the rate of oxygen uptake and carbon dioxide evolution was recorded. Following determination of the respiration rate, the lids were removed to ensure continued passive aeration of the mix. To assess the potential for passive diffusion of air from the surface, no further mixing was done. Depth of each test mix in the reactors was recorded at the start and end of the test to determine the extent of compaction following active degradation.
  • the initial mix contained about 114,600 mg/kg total extractable hydrocarbons. This is shown in Figure 1, which illustrates the mass fractions of the total extractable hydrocarbons (T.E.H.) from the initial mix at test Day 0 compared to the residual T.E.H. from each test after Day 41. Only about 3% of the T.E.H. was C30+ material. Test 1 - Control
  • control was the same as the initial mix, but received sufficient water to support good bioactivity. Overall, the control appears to have yielded the best hydrocarbon degradation results.
  • Figures 2 and 3 illustrate the results of the GC FID analysis of the residual hydrocarbons in the C8-C30 range compared to the initial hydrocarbons present at Day 0.
  • a negative change in the mass fraction of the residual hydrocarbons indicates that there is less of that fraction than in the initial hydrocarbon.
  • the loss of both light (C8-C11) and heavy (C21-C3O+) hydrocarbons shows that biodegradation is occurring. Some of the C8-C11 loss may be due to volatilization during preparation of the additive containing test mixes.
  • the apparent increase in the C12-C20 range hydrocarbons results from the mass fractions needed for total unity (1). Some of the heavy fractions may have been degraded to smaller hydrocarbons in the C12-C20 range. Nutrient analysis showed that no nutrients were limiting following the 41 -day test.
  • FIG. 2 shows the results of the GC/FID analysis of the residual hydrocarbons in the C8-C30 range compared to the initial hydrocarbons present at Day 0. Similar to the Test 1 results, the loss of both light (C8-C11) and heavy (C21-C30+) hydrocarbon, together with positive respiration data, shows that biodegradation is occurring. Some of the C8-C 11 loss may be due to volatilization during preparation of the test mixes. Nutrient analysis showed that no nutrients were limiting following the 41 -day test.
  • the RAS additive caused a high ammonia content to develop in the test mix by Day 41 (1700 mg/kg NH 4 -N). This could be a result of the degradation of the some RAS bio-solids, releasing ammonia through de-amination of proteins. This level of ammonia may be toxic to some bacteria.
  • the heterotrophic bacterial count remained high (>10 ] ' MPN/g) indicating that significant bacteria death had not occurred.
  • the hydrocarbon- degrading bacteria population had not increased, or had not remained viable by Day 41.
  • Test 3 showed the highest sustained temperature increase, indicating the greatest bioactivity.
  • the test mix retained 92% of its initial height after 41 days.
  • RAS re-activated sludge
  • the initial hydrocarbon-degrading bacteria count would also be similar to Test 2 as the Biocat 4000 does not contain live bacteria (not confirmed in this test).
  • the RAS+Biocat 4000 additive provided the third greatest extent of hydrocarbon biodegradation (39%, based on a single composite sample analysis).
  • Figure 2 shows the results of the GC/FID analysis of the residual hydrocarbons in the C8-C30 range compared to the initial hydrocarbons present at Day 0. A greater loss of light (C8-C14) and less loss of heavy (C22 only) hydrocarbons was observed. The change in hydrocarbon from the initial shows that biodegradation is occurring, but to a lesser extent then in Tests 1 and 2. As before, some of the C8-C11 loss may be due to volatilization during preparation of the test mixes. Biocat 4000 may also have introduced some vegetation-based organics that show up in GC/FID analysis as hydrocarbons in the C15-C30+ range, although this remains to be determined.
  • Test 3 had the overall highest rate of respiration, which agrees with the highest observed temperature in this test mix.
  • the low moisture present at the end of the test would explain the drop off of respiration activity as shown in Figures 4 and 6 after Day 13. This may also explain the low hydrocarbon-degrading bacteria count.
  • Test 3 showed the highest apparent bioactivity, but only the third highest reduction in residual T.E.H. This may have resulted because the RAS additive introduced a significant population of bacteria more adapted to degrading the wood shavings (cellulolytic activity) and organic nitrogen source in the initial mix than the hydrocarbons and was stimulated by the Biocat 4000.
  • Test 4 RAS + Biocat 4000 + Percarbonate oxygen release, compound (OX Composting activity was evident by the increase in temperature within the test mix on
  • Biocat 4000 may also have introduced some vegetation-based organics that show up in GC/FID analysis as hydrocarbons in the C15-C30+ range, although this remains to be determined.
  • Tests were conducted to determine the efficacy of using a combination of canola meal and dry wood shavings to contain and microbially decompose oily drilling residuals in a homogenous mix.
  • the main objective was to collect analytical data from laboratory and field applications to characterize the on-site treatment (mixing) of the present invention and the land spreading process.
  • FIGS 6 and 7 illustrate the results of the above field tests.
  • Preliminary field results for a period of 107 days indicated that the total reduction in hydrocarbons under field conditions is as high as 57% for invert based containment mixes and 37% for salt water free based containment mixes with minimal leaching limited to the top2.5 cm of the underlying soil.
  • canola (or rape) meal as the protein source
  • various other sources are also possible. Some examples are as follows: cottonseed meal, soybean meal, alfalfa meal, bone meal, blood meal, feather meal, kelp meal, peanut meal, borage meal, com meal, coconut meal, sesame seed meal, safflower meal, sunflower meal, hemp meal, and sugar beat meal. It will be understood by persons skilled in the art that any other similar protein source can be used in the present invention.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Public Health (AREA)
  • Materials Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

Une composition de traitement de matières contaminées par des composés hydrocarbures comprend un constituant protéique, un agent gonflant et une culture microbienne capable de métaboliser les contaminants hydrocarbures. La composition est mélangée à la matière contaminée et elle absorbe ou adsorbe les contaminants empêchant ainsi qu'ils ne filtrent dans l'environnement. La culture microbienne permet une biodégradation du contaminant éliminant ainsi tout risque environnemental associé à la matière contaminée. Le constituant protéique et l'agent gonflant sont de préférence de nature organique et la culture microbienne peut être indigène à la matière protéique. L'invention concerne également un procédé de traitement de matière contaminée par des hydrocarbures utilisant une composition telle que ci-dessus décrite. L'invention est particulièrement adaptée au traitement de déblais de forage contaminés.
PCT/CA1999/001239 1998-12-31 1999-12-31 Procede et composition de traitement de matieres contaminees par des hydrocarbures WO2000040666A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
BR9917122-8A BR9917122A (pt) 1998-12-31 1999-12-31 Composição e processo para o tratamento de um material contaminado com hidrocarbonetos
AU18526/00A AU767753B2 (en) 1998-12-31 1999-12-31 Process and composition for treating hydrocarbon contaminated material
APAP/P/2001/002209A AP2001002209A0 (en) 1998-12-31 1999-12-31 Process and composition for treating hydrocarbon contaminated material.
EP99962017A EP1147159A1 (fr) 1998-12-31 1999-12-31 Procede et composition de traitement de matieres contaminees par des hydrocarbures
NZ512641A NZ512641A (en) 1998-12-31 1999-12-31 Process and composition for treating hydrocarbon contaminated solid material
EA200100740A EA002537B1 (ru) 1998-12-31 1999-12-31 Способ и композиция для обработки загрязненного углеводородами материала
JP2000592366A JP2002534254A (ja) 1998-12-31 1999-12-31 炭化水素で汚染されている物質を処理するための方法および組成物
MXPA01007617A MXPA01007617A (es) 1998-12-31 1999-12-31 Proceso y composicion para tratar material contaminado con hidrocarburos.
NO20013286A NO20013286L (no) 1998-12-31 2001-06-29 Blanding og fremgangsmate til behandling av hydrokarbonforurenset materiale

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002257706A CA2257706C (fr) 1998-12-31 1998-12-31 Procede et composition pour traiter les materiaux contamines par des hydrocarbures
CA2,257,706 1998-12-31
US09/339,385 1999-06-24
US09/339,385 US6187581B1 (en) 1998-12-31 1999-06-24 Process and composition for treating hydrocarbon contaminated material

Publications (1)

Publication Number Publication Date
WO2000040666A1 true WO2000040666A1 (fr) 2000-07-13

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PCT/CA1999/001239 WO2000040666A1 (fr) 1998-12-31 1999-12-31 Procede et composition de traitement de matieres contaminees par des hydrocarbures

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EP (1) EP1147159A1 (fr)
JP (1) JP2002534254A (fr)
CN (1) CN1334852A (fr)
AP (1) AP2001002209A0 (fr)
AU (1) AU767753B2 (fr)
BR (1) BR9917122A (fr)
DZ (1) DZ2980A1 (fr)
EA (1) EA002537B1 (fr)
EG (1) EG21951A (fr)
ID (1) ID30305A (fr)
MX (1) MXPA01007617A (fr)
NO (1) NO20013286L (fr)
NZ (1) NZ512641A (fr)
OA (1) OA11744A (fr)
WO (1) WO2000040666A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU737258B2 (en) * 1997-12-17 2001-08-16 Daryl R Leathers & Associates Pty Ltd Process for the removal of contaminants from wastewater utilizing peat
WO2009124537A1 (fr) * 2008-04-09 2009-10-15 Hotrega-Gmbh Composition de liants biodégradable et système de liants pour produits chimiques et huiles
WO2018096210A1 (fr) * 2016-11-25 2018-05-31 University Of Helsinki Farine d'os et/ou viande en tant qu'additif pour l'assainissement environnemental de matières polluées

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008742B (zh) * 2017-06-06 2020-11-27 南昌工程学院 一种加快修复石油污染土壤的方法

Citations (8)

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US3617564A (en) * 1970-06-01 1971-11-02 Anderson Cob Mills Inc Removing oil or oil substance from water and land areas using corncob components
EP0414382A1 (fr) * 1989-07-24 1991-02-27 Robert L. Raible Compositions pour enlever des nappes de pétrole
US5009790A (en) * 1990-08-20 1991-04-23 Damcosur S.A. De C.V. Method for absorbing liquids using dealginate kelp
WO1994019942A1 (fr) * 1993-03-08 1994-09-15 Nurture, Inc. Dispersant proteique d'une fuite de petrole
US5395535A (en) * 1994-09-12 1995-03-07 Pinckard; Joseph A. Removal of hazardous chemical substances floating on water
US5554575A (en) * 1994-11-15 1996-09-10 Precision Remediation & Supply, Inc. Biodegradable and bioremedial absorbent compound for liquids
US5618725A (en) * 1992-08-31 1997-04-08 Elf Aquitaine Oleophilic biodegrading additive and method of treating hybrocarbon polluted medium
US5700558A (en) * 1995-12-08 1997-12-23 Bopp; Alvin F. Hydrocarbon absorbent

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617564A (en) * 1970-06-01 1971-11-02 Anderson Cob Mills Inc Removing oil or oil substance from water and land areas using corncob components
EP0414382A1 (fr) * 1989-07-24 1991-02-27 Robert L. Raible Compositions pour enlever des nappes de pétrole
US5009790A (en) * 1990-08-20 1991-04-23 Damcosur S.A. De C.V. Method for absorbing liquids using dealginate kelp
US5618725A (en) * 1992-08-31 1997-04-08 Elf Aquitaine Oleophilic biodegrading additive and method of treating hybrocarbon polluted medium
WO1994019942A1 (fr) * 1993-03-08 1994-09-15 Nurture, Inc. Dispersant proteique d'une fuite de petrole
US5395535A (en) * 1994-09-12 1995-03-07 Pinckard; Joseph A. Removal of hazardous chemical substances floating on water
US5554575A (en) * 1994-11-15 1996-09-10 Precision Remediation & Supply, Inc. Biodegradable and bioremedial absorbent compound for liquids
US5700558A (en) * 1995-12-08 1997-12-23 Bopp; Alvin F. Hydrocarbon absorbent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU737258B2 (en) * 1997-12-17 2001-08-16 Daryl R Leathers & Associates Pty Ltd Process for the removal of contaminants from wastewater utilizing peat
WO2009124537A1 (fr) * 2008-04-09 2009-10-15 Hotrega-Gmbh Composition de liants biodégradable et système de liants pour produits chimiques et huiles
WO2018096210A1 (fr) * 2016-11-25 2018-05-31 University Of Helsinki Farine d'os et/ou viande en tant qu'additif pour l'assainissement environnemental de matières polluées

Also Published As

Publication number Publication date
NZ512641A (en) 2003-12-19
AU1852600A (en) 2000-07-24
EA200100740A1 (ru) 2001-12-24
NO20013286D0 (no) 2001-06-29
MXPA01007617A (es) 2005-10-04
BR9917122A (pt) 2002-01-29
DZ2980A1 (fr) 2004-03-15
ID30305A (id) 2001-11-22
AP2001002209A0 (en) 2001-09-30
EG21951A (en) 2002-04-30
EA002537B1 (ru) 2002-06-27
JP2002534254A (ja) 2002-10-15
NO20013286L (no) 2001-08-30
EP1147159A1 (fr) 2001-10-24
CN1334852A (zh) 2002-02-06
OA11744A (en) 2005-05-13
AU767753B2 (en) 2003-11-20

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