CN110184068A - A kind of surfactant solution of restoration of soil nitrobenzene contamination - Google Patents
A kind of surfactant solution of restoration of soil nitrobenzene contamination Download PDFInfo
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- CN110184068A CN110184068A CN201910499736.0A CN201910499736A CN110184068A CN 110184068 A CN110184068 A CN 110184068A CN 201910499736 A CN201910499736 A CN 201910499736A CN 110184068 A CN110184068 A CN 110184068A
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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
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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
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- 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
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
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- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of surfactant solution of restoration of soil nitrobenzene contamination, the surfactant solution includes following component: ethanol solution, phosphates ionic surface active agent, fatty alcohol sulfate salt anionoid type surfactant, polyethenoxy ether class nonionic surface active agent, ethyl alcohol and deionized water.The application method of the surfactant solution is the soil of nitrobenzene contamination to be placed into 90% ethanol solution to be pre-processed (soil is totally submerged in ethanol solution) first, after standing 20-30min, filtering, contaminated soil is to be used, furthermore phosphate ester salt, fatty alcohol sulfate salt anionoid type surfactant, polyethenoxy ether class nonionic surface active agent, ethyl alcohol and deionized water are stirred, surfactant solution p-nitrophenyl contaminated soil is finally subjected to elution enhanced remediation.Operation of the present invention is convenient, economical and practical, more Environmental Safety, has preferable enhanced remediation effect for the soil of nitrobenzene contamination.
Description
Technical field
The invention belongs to soil enhanced remediation technical field more particularly to a kind of synergy of p-nitrophenyl soil pollution type
Repair process technical field.
Background technique
With the continuous development of national economy, the development of chemical industry, environmental problem is also got worse, especially soil with
And water pollution etc. is the most closely bound up to daily life, soil pollution causes people's lives, diet etc.
More serious influence.And in soil pollution based on more hydrophobic organic compound, due to such organic compound
Itself the characteristics of, determines that such compound is easy absorption without being readily removable, to the pollution control band of soil in soil pollution
Very serious difficulty is carried out.It is mainly more serious with pollution of the nitrobenzene to soil in numerous hydrophobic organic compounds.
Nitrobenzene is a kind of important chemical intermediate, be prepare the essential important substance of the chemical substances such as aniline it
One, nitrobenzene is not soluble in water, there is a special odor, has biggish harm after human body sucking, can carcinogenic, teratogenesis, mutagenesis, be inflammable
Explosive substance, once will will cause very big influence into environment, which enters also not degradable after soil.
To solve the above-mentioned problems, influence of the nitrobenzene to soil pollution is reduced, people are also made that one in the research
The breakthrough for determining degree administers soil pollution using surfactant enhanced remediation technology, but administers at such upper past
Toward single surfactant enhanced remediation technology is used, although the enhanced remediation technology of single surfactant is to a certain extent
Influence of the nitrobenzene to soil pollution is also reduced, but effect is limited, in consideration of it, the invention proposes a kind of surfactants
The technology of solution enhancing restoration of soil nitrobenzene contamination.
Summary of the invention
At present while economic development and environment protection, on the one hand, nitrobenzene is as important industrial chemicals and change
Intermediate is learned, there is also the effects that can not be substituted in chemical production processes, but on the other hand, soil caused by nitrobenzene
Pollution, water pollution and atmosphere pollution etc. increasingly affect people's lives environment again, people's health are threaten, for soil
Nitrobenzene contamination in earth is administered, we have done a large amount of experimental study, and it is dirty that the invention proposes a kind of rehabilitating soil nitrobenzenes
The surfactant solution of dye.
To achieve the goals above, the surfactant solution of restoration of soil nitrobenzene contamination includes following composition: ethyl alcohol
Solution, phosphate ester salt, fatty alcohol sulfate salt anionoid type surfactant, polyethenoxy ether class non-ionic surfactant
Agent, ethyl alcohol and deionized water.
Preferably, the ethanol solution that the ethanol solution is 90%.
The method of the surfactant solution restoration of soil nitrobenzene contamination, includes the following steps:
1) soil is randomly choosed, plant undesirable root, stone etc., natural air drying are removed, the sieving of 100 mesh is kept in dark place；
2) nitrobenzene contamination pedotheque is prepared；
3) nitrobenzene contamination pedotheque is placed into ethanol solution and is pre-processed that (soil is totally submerged molten in ethyl alcohol
In liquid), after standing 20-30min, it is to be used to be contaminated soil for filtering；
4) phosphate ester salt, fatty alcohol sulfate salt anionoid type surfactant, polyethenoxy ether class is non-ionic
Surfactant, 90% ethyl alcohol and deionized water stir, and prepare surfactant solution；
5) finally surfactant solution elutes self-control nitrobenzene contamination soil, the soil repaired.
Soil is removed into undesirable root in the present invention, the purpose that stone carries out 100 mesh sievings mainly is to be further reduced soil
Sundries in earth, so that soil is more preferably clean, on the one hand in order to weed out residue, on the other hand mainly the sieving of 100 mesh is mainly
It is in order to enable soil size is uniform, convenient for the processing operation in later period.
It is pre-processed, why sample is carried out pre- using 90% ethyl alcohol p-nitrophenyl contaminated soil sample in the present invention
Processing is pre-processed, is being filtered, mainly using ethanol solution p-nitrophenyl because nitrobenzene is soluble in ethyl alcohol
Be in order to before surfactant enhanced remediation as far as possible can remove the nitrobenzene being mostly present in soil.Why
Using 90% ethanol solution, on the other hand the considerations of being on the one hand for economic cost is because ethanol solution exists
Volatilize in air very fast, a small amount of water, which is added, can be effectively reduced the rate of ethyl alcohol volatilization, the amount of certain water can not it is more more more
Good, although excessive water will lead to ethyl alcohol volatilization slack-off, but also will affect the solvability of ethyl alcohol p-nitrophenyl.
Preferably, the above-mentioned preferred dodecyl polyoxyethylene ether phosphate of phosphate ester salt analog anion surfactants
Sodium, dodecyl polyoxyethylene ether phosphate ammonium, 1-isobutyl-3,5-dimethylhexylphosphoric acid sodium, laurel alcohol ether phosphate potassium, dodecylphosphoric acid
One of ester ammonium or any multiple combinations.
Preferably, the preferred sodium lauryl sulfate of fatty alcohol sulfate salt analog anion surfactants, laruyl alcohol sulfuric acid
The combination of one or both of ester sodium.
Preferably, the preferred polyoxyethylene ether of polyethenoxy ether class nonionic surface active agent, laruyl alcohol are poly-
One of ethylene oxide ether, isomerous tridecanol polyoxyethylene ether or any two kinds of combinations.
The starting point of above-mentioned preferred each anionoid and nonionic surface active agent consider enhanced remediation effect,
The result of the various aspects comprehensive consideration such as economic cost, smell, risk.
The surfactant solution be by phosphate ester salt, fatty alcohol sulfate salt anionoid type surfactant,
Polyethenoxy ether class nonionic surface active agent, ethyl alcohol and deionized water stir rear obtained solution.It should
On the one hand the ethyl alcohol at place primarily serves the effect of solubilising, Adsorption of Nitrobenzene from Aqueous Solution, another party is to dissolve the insoluble type surface of part water
Activating agent.
The pollution soil sample, 90% ethanol solution, phosphate ester salt, fatty alcohol sulfate salt anionoid type surface-active
Agent, polyethenoxy ether class nonionic surface active agent, ethyl alcohol and deionized water respectively Zhan always feed intake mass ratio 10%,
25%, 1.3%, 1.3%, 3.9%, 20%, remaining is deionized water, amounts to 100%.
The utility model has the advantages that
Surfactant solution of the present invention and other surfactants are deposited on treatment of Nitrobenzene contaminated soil enhanced remediation
In the apparent advantage of the following aspects: (1) reducing the concentration and dosage of single surfactant, improve solubilized effect
Rate；(2) secondary pollution of surfactant is reduced；(3) avoid anion and cation surfactant fluid react or
The possibility of person's sedimentation；(4) intermolecular hydrogen bonding acts on, and enhanced remediation effect is more significant；(5) complexed surfactant easily forms mixed
Micella and mixing and absorption layer are closed, the repulsion between surfactant is weaker, is more likely formed micella；(6) organic pollutant is compound
Distribution coefficient is larger in surfactant solution, is easier to increase the solubilizing effect of surfactant.
Specific embodiment
Following embodiment further illustrates the contents of the present invention, but should not be construed as limiting the invention.Without departing substantially from
In the case where spirit of that invention and essence, to modification made by the method for the present invention, step or condition and replaces, belong to the present invention
Range.
Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art.
One, preparation process
Pedotheque is weighed, artificially uniform contaminated soil sample, control soil pollution amount are with the methanol solution of nitrobenzene
Every gram of soil 10mg nitrobenzene is made contaminated soil sample to be used, is kept in dark place as the methanol solution to the greatest extent that volatilizees at dark wind.
Quartz sand is completed in the bottom of the organic glass pillar of diameter about 3cm, contaminated samples 100g is weighed, is put into column,
Glass column is gently beaten, guarantees that soil dense distribution in Organic glass column, is then covered with one layer of quartz sand, uses various concentration
Surfactant solution elutes from top to down, and every 100ml collects one layer of efflux.Measure the content of nitrobenzene in solution.
Each Materials Example that each scheme uses is as follows::
Embodiment 1: pollution soil sample 100g, 90% ethanol solution 250g, 1-isobutyl-3,5-dimethylhexylphosphoric acid sodium 13g, lauryl alcohol sulfuric acid
Sodium 13g, isomerous tridecanol polyoxyethylene ether 39g, ethyl alcohol 200g, remaining is deionized water, amounts to 1000g.
Embodiment 2: pollution soil sample 100g, 90% ethanol solution 250g, laurel alcohol ether phosphate potassium 10g, lauryl alcohol sulfuric acid
Sodium 10g, ethoxylated dodecyl alcohol 45g, ethyl alcohol 200g, remaining is deionized water, amounts to 1000g.
Embodiment 3: pollution soil sample 100g, 90% ethanol solution 250g, 1-isobutyl-3,5-dimethylhexylphosphoric acid sodium 16g, laruyl alcohol sulfuric acid
Ester sodium 16g, polyoxyethylene ether 34g, ethyl alcohol 200g, remaining is deionized water, amounts to 1000g.
Embodiment 4: pollution soil sample 100g, 90% ethanol solution 250g, dodecyl polyoxyethylene ether sodium phosphate 20g,
Sodium lauryl sulfate 20g, isomerous tridecanol polyoxyethylene ether 25g, ethyl alcohol 200g, remaining is deionized water, amounts to 1000g.
Comparative example
One, preparation process
Pedotheque is weighed, artificially uniform contaminated soil sample, control soil pollution amount are with the methanol solution of nitrobenzene
Every gram of soil 10mg nitrobenzene is made contaminated soil sample to be used, is kept in dark place as the methanol solution to the greatest extent that volatilizees at dark wind.
Quartz sand is completed in the bottom of the organic glass pillar of diameter about 3cm, contaminated samples 100g is weighed, is put into column,
Glass column is gently beaten, guarantees that soil dense distribution in Organic glass column, is then covered with one layer of quartz sand, uses various concentration
Single surfactant solution elutes from top to down, and every 100ml collects one layer of efflux.Measure the content of nitrobenzene in solution.
Comparative example 1: pollution soil sample 100g, 90% ethanol solution 250g, lauryl sodium sulfate 65g, ethyl alcohol 200g,
Remaining is deionized water, amounts to 1000g.
Comparative example 2: pollution soil sample 100g, 90% ethanol solution 250g, neopelex 65g, ethyl alcohol
200g, remaining is deionized water, amounts to 1000g.
Comparative example 3: pollution soil sample 100g, 90% ethanol solution 250g, cetyl trimethylammonium bromide 65g, second
Alcohol 200g, remaining is deionized water, amounts to 1000g.
Comparative example 4: pollution soil sample 100g, 90% ethanol solution 250g, Tween 80 65g, ethyl alcohol 200g, remaining is
Deionized water amounts to 1000g.
Conclusion
Through the foregoing embodiment and the research of comparative example, specific visible Tables 1 and 2, the present invention can be prepared
Surfactant solution it is truly feasible in terms for the treatment of of Nitrobenzene contaminated soil enhanced remediation improvement, than single surfactant
Solution treatment of Nitrobenzene contaminated soil enhanced remediation, which is administered, has more apparent advantage.When anionic surfactant and it is non-from
Sub- surfactant mixing ratio be 0.67 when, nitrobenzene accumulate elution amount it is preferable, the present invention it is practical, to a certain extent for
The enhanced remediation improvement of nitrobenzene soil pollution provides strong theoretical research foundation, has stronger economic benefit.
Table 1
| Embodiment | Mixing ratio (anion: nonionic) | Nitrobenzene accumulates elution amount (mg) |
| Embodiment 1 | 0.67 | 905.6 |
| Embodiment 2 | 0.44 | 792.8 |
| Embodiment 3 | 0.94 | 833.3 |
| Embodiment 4 | 1.6 | 870 |
Table 2
| Embodiment | Nitrobenzene accumulates elution amount (mg) | Enhanced remediation effect | Elution amount | Micella stability |
| Comparative example 1 | 750.0 | Generally | It is good | Generally |
| Comparative example 2 | 753.1 | Generally | It is good | Generally |
| Comparative example 3 | 752.1 | Generally | It is good | Generally |
| Comparative example 4 | 756.2 | Generally | It is good | Generally |
| Embodiment 1 | 905.6 | Preferably | Preferably | Enhancing |
Claims (7)
1. a kind of surfactant solution of restoration of soil nitrobenzene contamination, which is characterized in that the surfactant solution packet
Containing following component: ethanol solution, phosphates ionic surface active agent, fatty alcohol sulfate salt anionoid type surface-active
Agent, polyethenoxy ether class nonionic surface active agent, ethyl alcohol and deionized water.
2. the surfactant solution of restoration of soil nitrobenzene contamination according to claim 1, which is characterized in that the second
The ethanol solution that alcoholic solution is 90%.
3. the surfactant solution of restoration of soil nitrobenzene contamination according to claim 1, which is characterized in that the phosphorus
Acid esters salt analog anion surfactants are dodecyl polyoxyethylene ether sodium phosphate, dodecyl polyoxyethylene ether phosphate
One of ammonium, 1-isobutyl-3,5-dimethylhexylphosphoric acid sodium, laurel alcohol ether phosphate potassium, 1-isobutyl-3,5-dimethylhexylphosphoric acid ammonium or any multiple combinations.
4. the surfactant solution of restoration of soil nitrobenzene contamination according to claim 1, which is characterized in that the height
Grade alcohol sulfuric ester salt analog anion surfactants are one or both of sodium lauryl sulfate, laruyl alcohol sodium sulfovinate group
It closes.
5. the surfactant solution of restoration of soil nitrobenzene contamination according to claim 1, which is characterized in that described poly-
Ethylene oxide ether nonionic type surfactant is polyoxyethylene ether, ethoxylated dodecyl alcohol, isomerous tridecanol polyoxyethylene
One of ether or any two kinds of combinations.
6. the surfactant solution of restoration of soil nitrobenzene contamination according to claim 1, which is characterized in that its feature
It is, ethanol solution, phosphates anionic surfactant, fatty alcohol sulfate salt anionoid type surface-active
Agent, polyethenoxy ether class nonionic surface active agent, ethyl alcohol and deionized water respectively Zhan always feed intake mass ratio 25%,
1.3%, 1.3%, 3.9%, 20%, remaining is deionized water, amounts to 100%.
7. a kind of method of surfactant solution restoration of soil nitrobenzene contamination, which comprises the steps of:
1) soil is randomly choosed, plant undesirable root, stone etc., natural air drying are removed, the sieving of 100 mesh is kept in dark place；
2) nitrobenzene contamination pedotheque is prepared；
3) nitrobenzene contamination pedotheque is placed into 90% ethanol solution and is pre-processed that (soil is totally submerged in ethyl alcohol
In solution), after standing 20-30min, it is to be used to be contaminated soil for filtering；
4) surfactant solution is prepared: by phosphate ester salt, fatty alcohol sulfate salt anionoid type surfactant, polyoxy second
Alkene ether nonionic type surfactant, ethyl alcohol and deionized water stir；
5) capable elution is put into the surfactant solution p-nitrophenyl contaminated soil sample of preparation, the soil repaired.
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| CN201910499736.0A CN110184068A (en) | 2019-06-11 | 2019-06-11 | A kind of surfactant solution of restoration of soil nitrobenzene contamination |
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| CN201910499736.0A CN110184068A (en) | 2019-06-11 | 2019-06-11 | A kind of surfactant solution of restoration of soil nitrobenzene contamination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360053A (en) * | 2020-03-09 | 2020-07-03 | 上海应用技术大学 | Polluted soil oxidation remediation method |
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| SU699424A1 (en) * | 1978-07-10 | 1979-11-25 | Северо-Кавказский Научно-Исследовательский Институт Садоводства И Виноградарства | Method of preparation of soil for structure analysis |
| CN101181716A (en) * | 2007-12-20 | 2008-05-21 | 上海交通大学 | Method for enhancing restoration of soil nitrobenzene contamination by anion-nonionic surfactant |
| CN102172614A (en) * | 2011-01-28 | 2011-09-07 | 南京市环境保护科学研究院 | Ex-situ washing remediation method for nitrochlorobenzene-contaminated soil |
| CN109060589A (en) * | 2018-09-26 | 2018-12-21 | 三峡大学 | A method of measurement soil agreegate |
| CN109092875A (en) * | 2018-09-12 | 2018-12-28 | 郑州航空工业管理学院 | A kind of restorative procedure of organophosphorus pesticide pollution soil |
-
2019
- 2019-06-11 CN CN201910499736.0A patent/CN110184068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU699424A1 (en) * | 1978-07-10 | 1979-11-25 | Северо-Кавказский Научно-Исследовательский Институт Садоводства И Виноградарства | Method of preparation of soil for structure analysis |
| CN101181716A (en) * | 2007-12-20 | 2008-05-21 | 上海交通大学 | Method for enhancing restoration of soil nitrobenzene contamination by anion-nonionic surfactant |
| CN102172614A (en) * | 2011-01-28 | 2011-09-07 | 南京市环境保护科学研究院 | Ex-situ washing remediation method for nitrochlorobenzene-contaminated soil |
| CN109092875A (en) * | 2018-09-12 | 2018-12-28 | 郑州航空工业管理学院 | A kind of restorative procedure of organophosphorus pesticide pollution soil |
| CN109060589A (en) * | 2018-09-26 | 2018-12-21 | 三峡大学 | A method of measurement soil agreegate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360053A (en) * | 2020-03-09 | 2020-07-03 | 上海应用技术大学 | Polluted soil oxidation remediation method |
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