CN101195123A - Method for renovating polycyclic aromatic hydrocarbon contaminated soil by using cyclodextrin allotopia - Google Patents
Method for renovating polycyclic aromatic hydrocarbon contaminated soil by using cyclodextrin allotopia Download PDFInfo
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- CN101195123A CN101195123A CNA2007101951095A CN200710195109A CN101195123A CN 101195123 A CN101195123 A CN 101195123A CN A2007101951095 A CNA2007101951095 A CN A2007101951095A CN 200710195109 A CN200710195109 A CN 200710195109A CN 101195123 A CN101195123 A CN 101195123A
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- cyclodextrin
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- polycyclic aromatic
- aromatic hydrocarbon
- allotopia
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Abstract
The invention discloses a method for restoring soil which is polluted by polycyclic aromatic through utilizing cyclodextrin ectopics, which belongs to the technical field of chemical treatments for polluted soil. The invention comprises mixing the soil which is polluted by polycyclic aromatic with the solution of the cyclodextrin after the soil is air-dried, grinded, and sieved, and arranging mixed liquid in a rotary oscillator and treating, and then, separating the mixed liquid in a centrifugal machine, wherein the mass ratio between water and the cyclodextrin is 100: (3-10), the mass ratio between the soil and the solution of the cyclodextrin is 1: (1-4), and treating time in the rotary oscillator is 16-32 hours. The invention has the advantages of simple and easy operation, rapidity, high efficiency and non-secondary pollutions.
Description
Technical field
The invention belongs to the chemical treatment method field of polluted soil, be specifically related to a kind of method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution.
Background technology
Polycyclic aromatic hydrocarbon is the persistence organic pollutant of a quasi-representative, has carcinogenic, teratogenesis, mutagenesis, and ecological environment security and human health are caused very big threat.The octanol/water distribution coefficient is higher because the solubility of polycyclic arene compound in water is little, it is very easily adsorbed and enrichment by organic matter in soil or the deposit, polycyclic aromatic hydrocarbon has the trend that constantly increases the weight of to soil pollution in recent years, thus in the soil polycyclic aromatic hydrocarbon control with repair the important content become Chinese scholars research.
The method that polycyclic aromatic hydrocarbon pollution is administered mainly contains physics method, microbial method, plant method and chemical method at present.Mainly there is the high and halfway shortcoming of reparation of disposal cost in the physics restorative procedure.Though microbial method and plant method restorative procedure have simple to operate, advantages such as operating cost is low, non-secondary pollution, but in actual application, to be subjected to influences such as local environment geological conditions and climatic factor, and these influence factors are difficult to carry out Artificial Control, and repairing efficiency is longer simultaneously.In chemical method, there is the scholar to utilize polycyclic aromatic hydrocarbon in the wash-out soil such as organic solvent (as ethanol, n-hexane, carrene, chloroform, acetone) and surfactant both at home and abroad, but can has secondary pollution problems.
At the many problems that exist in the present polycyclic aromatic hydrocarbon pollution repair process, the invention provides a kind of cyclodextrin allotopia that utilizes simple, quick, that efficiently, do not produce secondary pollution and repair the method for polycyclic aromatic hydrocarbon pollution.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution.Its concrete scheme is:
1. polycyclic aromatic hydrocarbon pollution is ground after air-dry under field conditions (factors), the screen cloth that by the aperture is 2mm is to remove the foreign material in the soil;
2. the mass ratio in water and cyclodextrin is 100: the ratio preparation cyclodextrin solution of (3～10);
3. with step in 1. contaminated soil and step 2. in cyclodextrin solution be mixed and made into the soil mixed liquor, wherein the mass ratio of soil and cyclodextrin solution is 1: (1～4);
4. be to handle in 10～20r/min gyrate shaker 16～32 hours the soil mixed liquor of step in 3. at rotating speed;
5. with step 4. in the soil mixed liquor in rotating speed is the centrifuge of 3000～4000r/min, separate soil after can obtaining in 5～10 minutes handling.
Described cyclodextrin is methyl beta cyclodextrin, hydroxypropyl beta cyclodextrin, acetyl group beta cyclodextrin.
The mass ratio of described water and cyclodextrin is preferably 100: (5～7).
The mass ratio of described soil and cyclodextrin solution is preferably 1: (1.5～3).
The time that described soil mixed liquor is handled in gyrate shaker is preferably 20～26 hours.
The present invention has that operation is simple, fast, efficiently, do not produce advantages such as secondary pollution.
The specific embodiment
Further specify the present invention below in conjunction with example.
Material: (1) polycyclic aromatic hydrocarbon pollution: at room-dry, grind, the screen cloth of crossing 2mm is standby;
(2) methyl beta cyclodextrin: analyze pure;
(3) hydroxypropyl beta cyclodextrin: analyze pure;
(4) acetyl group beta cyclodextrin: analyze pure.
Embodiment 1
The preparation mass concentration is the methyl beta cyclodextrin solution of 60g/L.Take by weighing polycyclic aromatic hydrocarbon pollution 100g, add 200ml methyl beta cyclodextrin solution.Be to handle 24 hours in 10～20r/min gyrate shaker at rotating speed then.Be to separate in the centrifuge of 3000～4000r/min to obtain handling back soil in 10 minutes with the soil mixed liquor at rotating speed at last.Contaminated soil before and after the above-mentioned processing is carried out the extraction and the mensuration of polycyclic aromatic hydrocarbon.The result shows: by 48.4mg/kg, the 26.8mg/kg, the 12.5mg/kg that handle after preceding 205.8mg/kg, 74.9mg/kg, 76.7mg/kg are reduced to processing, clearance is respectively 76.5%, 64.2%, 83.7% to the concentration of phenanthrene, anthracene, pyrene respectively.
Embodiment 2
The preparation mass concentration is the hydroxypropyl beta cyclodextrin solution of 60g/L.Take by weighing polycyclic aromatic hydrocarbon pollution 100g, add 200ml hydroxypropyl beta cyclodextrin solution.Be to handle 24 hours in 10～20r/min gyrate shaker at rotating speed then.Be to separate in the centrifuge of 3000～4000r/min to obtain handling back soil in 10 minutes with the soil mixed liquor at rotating speed at last.Contaminated soil before and after the above-mentioned processing is carried out the extraction and the mensuration of polycyclic aromatic hydrocarbon.The result shows: by 72.8mg/kg, the 41.7mg/kg, the 21.2mg/kg that handle after preceding 205.8mg/kg, 74.9mg/kg, 76.7mg/kg are reduced to processing, clearance is respectively 64.6%, 55.7%, 72.3% to the concentration of phenanthrene, anthracene, pyrene respectively.
Embodiment 3
The preparation mass concentration is the acetyl group beta cyclodextrin solution of 60g/L.Take by weighing polycyclic aromatic hydrocarbon pollution 100g, add 200ml acetyl group beta cyclodextrin solution.Be to handle 24 hours in 10～20r/min gyrate shaker at rotating speed then.Be to separate in the centrifuge of 3000～4000r/min to obtain handling back soil in 10 minutes with the soil mixed liquor at rotating speed at last.Contaminated soil before and after the above-mentioned processing is carried out the extraction and the mensuration of polycyclic aromatic hydrocarbon.The result shows: by 99.4mg/kg, the 42.1mg/kg, the 26.9mg/kg that handle after preceding 205.8mg/kg, 74.9mg/kg, 76.7mg/kg are reduced to processing, clearance is respectively 51.7%, 43.8%, 64.9% to the concentration of phenanthrene, anthracene, pyrene respectively.
Claims (5)
1. method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution is characterized in that the concrete steps of this technology are as follows:
1. polycyclic aromatic hydrocarbon pollution is air-dry under field conditions (factors) and grind, the screen cloth that by the aperture is 2mm is to remove the foreign material in the soil;
2. the mass ratio in water and cyclodextrin is 100: the ratio preparation cyclodextrin solution of (3～10);
3. with step in 1. contaminated soil and step 2. in cyclodextrin solution be mixed and made into mixed liquor, wherein the mass ratio of soil and cyclodextrin solution is 1: (1～4);
4. be to handle in 10～20r/min gyrate shaker 16～32 hours the soil mixed liquor of step in 3. at rotating speed;
5. with step 4. in the soil mixed liquor in rotating speed is the centrifuge of 3000～4000r/min, separate soil after can obtaining in 5～10 minutes handling.
2. according to the described method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution of claim 1, it is characterized in that described cyclodextrin is methyl beta cyclodextrin, hydroxypropyl beta cyclodextrin, acetyl group beta cyclodextrin.
3. according to the described method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution of claim 1, it is characterized in that the mass ratio of described water and cyclodextrin is preferably 100: (5～7).
4. according to the described method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution of claim 1, it is characterized in that the mass ratio of described soil and cyclodextrin solution is preferably 1: (1.5～3).
5. according to the described method of utilizing cyclodextrin allotopia to repair polycyclic aromatic hydrocarbon pollution of claim 1, it is characterized in that the time that described soil mixed liquor is handled is preferably 20～26 hours in gyrate shaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101951095A CN101195123A (en) | 2007-11-29 | 2007-11-29 | Method for renovating polycyclic aromatic hydrocarbon contaminated soil by using cyclodextrin allotopia |
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| CNA2007101951095A CN101195123A (en) | 2007-11-29 | 2007-11-29 | Method for renovating polycyclic aromatic hydrocarbon contaminated soil by using cyclodextrin allotopia |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670363B (en) * | 2009-09-24 | 2011-09-14 | 江苏大学 | Method for eluting and restoring 1,2,4-trichlorobenzene polluted soil by cyclodextrin solution |
| CN102205345A (en) * | 2011-03-25 | 2011-10-05 | 中国科学院南京土壤研究所 | Ex-situ bioremediation method of benzopyrene-contaminated soils |
| CN102941225A (en) * | 2012-11-26 | 2013-02-27 | 中国科学院南京土壤研究所 | Chemistry-microorganism combination restoration method of polycyclic aromatic hydrocarbons and heavy metal composite contaminated site soil |
| CN103639184A (en) * | 2013-12-25 | 2014-03-19 | 武汉大学 | Method for circularly repairing organic polluted soil by cyclodextrin eluting solution |
| CN103878172A (en) * | 2014-04-14 | 2014-06-25 | 北京建筑材料科学研究总院有限公司 | Method for jointly treating polycyclic aromatic hydrocarbon polluted soil and urban organic waste |
| CN105127181A (en) * | 2015-08-23 | 2015-12-09 | 长春黄金研究院 | In-situ remediation treating method for gold tailing pond |
| CN105583223A (en) * | 2016-02-04 | 2016-05-18 | 周益辉 | Remediation agent and application for combined contaminated soil |
| CN105689385A (en) * | 2016-02-04 | 2016-06-22 | 周益辉 | Heavy-metal compound contaminated soil remediation agent and application |
| CN105855287A (en) * | 2016-05-30 | 2016-08-17 | 湖南恒凯环保科技投资有限公司 | Method for ex-situ remediation of organic contaminated soil by virtue of sodium percarbonate-biological pile technique |
| CN108753658A (en) * | 2018-06-19 | 2018-11-06 | 南京工程学院 | A kind of benzo [a] pyrene degradation bacteria and their usage and use and the minimal medium and its preparation method for preparing the bacterial strain |
| CN108854991A (en) * | 2018-04-17 | 2018-11-23 | 中国地质大学（武汉） | A kind of poly-dopamine cladding polyethylene sieve plate and its application |
| CN109382402A (en) * | 2017-08-03 | 2019-02-26 | 中国石油化工股份有限公司 | The method and its application of petroleum hydrocarbon in a kind of removal soil |
| CN110871212A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | Preparation for removing volatile organic compound, application thereof and method for removing volatile organic compound |
| CN111889505A (en) * | 2020-08-15 | 2020-11-06 | 中盾三润(山东)环境科技有限公司 | Method for restoring organic matter contaminated soil by cyclodextrin reinforced plants |
| CN115213215A (en) * | 2022-06-21 | 2022-10-21 | 北京师范大学 | Remediation agent for remediating polycyclic aromatic hydrocarbon contaminated soil and preparation method thereof |
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2007
- 2007-11-29 CN CNA2007101951095A patent/CN101195123A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670363B (en) * | 2009-09-24 | 2011-09-14 | 江苏大学 | Method for eluting and restoring 1,2,4-trichlorobenzene polluted soil by cyclodextrin solution |
| CN102205345A (en) * | 2011-03-25 | 2011-10-05 | 中国科学院南京土壤研究所 | Ex-situ bioremediation method of benzopyrene-contaminated soils |
| CN102205345B (en) * | 2011-03-25 | 2012-06-13 | 中国科学院南京土壤研究所 | Ex-situ bioremediation method of benzopyrene-contaminated soils |
| CN102941225A (en) * | 2012-11-26 | 2013-02-27 | 中国科学院南京土壤研究所 | Chemistry-microorganism combination restoration method of polycyclic aromatic hydrocarbons and heavy metal composite contaminated site soil |
| CN103639184A (en) * | 2013-12-25 | 2014-03-19 | 武汉大学 | Method for circularly repairing organic polluted soil by cyclodextrin eluting solution |
| CN103639184B (en) * | 2013-12-25 | 2015-02-18 | 武汉大学 | Method for circularly repairing organic polluted soil by cyclodextrin eluting solution |
| CN103878172A (en) * | 2014-04-14 | 2014-06-25 | 北京建筑材料科学研究总院有限公司 | Method for jointly treating polycyclic aromatic hydrocarbon polluted soil and urban organic waste |
| CN103878172B (en) * | 2014-04-14 | 2015-12-30 | 北京建筑材料科学研究总院有限公司 | A kind of method of polycyclic aromatic hydrocarbons contaminated soil and city organic waste Combined Treatment |
| CN105127181A (en) * | 2015-08-23 | 2015-12-09 | 长春黄金研究院 | In-situ remediation treating method for gold tailing pond |
| CN105689385A (en) * | 2016-02-04 | 2016-06-22 | 周益辉 | Heavy-metal compound contaminated soil remediation agent and application |
| CN105583223A (en) * | 2016-02-04 | 2016-05-18 | 周益辉 | Remediation agent and application for combined contaminated soil |
| CN105855287A (en) * | 2016-05-30 | 2016-08-17 | 湖南恒凯环保科技投资有限公司 | Method for ex-situ remediation of organic contaminated soil by virtue of sodium percarbonate-biological pile technique |
| CN109382402A (en) * | 2017-08-03 | 2019-02-26 | 中国石油化工股份有限公司 | The method and its application of petroleum hydrocarbon in a kind of removal soil |
| CN108854991A (en) * | 2018-04-17 | 2018-11-23 | 中国地质大学（武汉） | A kind of poly-dopamine cladding polyethylene sieve plate and its application |
| CN108753658A (en) * | 2018-06-19 | 2018-11-06 | 南京工程学院 | A kind of benzo [a] pyrene degradation bacteria and their usage and use and the minimal medium and its preparation method for preparing the bacterial strain |
| CN108753658B (en) * | 2018-06-19 | 2021-11-12 | 南京工程学院 | Benzo [ a ] pyrene degrading bacterium, use method and application thereof, inorganic salt culture medium for preparing strain and preparation method of inorganic salt culture medium |
| CN110871212A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | Preparation for removing volatile organic compound, application thereof and method for removing volatile organic compound |
| CN111889505A (en) * | 2020-08-15 | 2020-11-06 | 中盾三润(山东)环境科技有限公司 | Method for restoring organic matter contaminated soil by cyclodextrin reinforced plants |
| CN115213215A (en) * | 2022-06-21 | 2022-10-21 | 北京师范大学 | Remediation agent for remediating polycyclic aromatic hydrocarbon contaminated soil and preparation method thereof |
| CN115213215B (en) * | 2022-06-21 | 2023-05-26 | 北京师范大学 | Repairing agent for repairing polycyclic aromatic hydrocarbon polluted soil and preparation method thereof |
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Open date: 20080611 |