CN104403673A - Eluting agent for removing polybrominated diphenyl ethers in soil and preparation method and application thereof - Google Patents
Eluting agent for removing polybrominated diphenyl ethers in soil and preparation method and application thereof Download PDFInfo
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- CN104403673A CN104403673A CN201410566929.0A CN201410566929A CN104403673A CN 104403673 A CN104403673 A CN 104403673A CN 201410566929 A CN201410566929 A CN 201410566929A CN 104403673 A CN104403673 A CN 104403673A
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Abstract
The invention belongs to the field of soil pollution remediation, discloses an eluting agent for removing polybrominated diphenyl ethers in soil and a preparation method and an application thereof, and solves the current difficulty of separating the polybrominated diphenyl ethers from the soil. The eluting agent comprises an aqueous solution of Triton 100 and dimethyl sulfoxide, wherein the Triton 100 concentration is 0.8-4 g/L, and the volume of dimethyl sulfoxide accounts for 10-15% of the total volume of the solution. The application of the eluting agent in remediation of the polybrominated diphenyl ethers polluted soil is provided. The mixed eluting agent for removing the polybrominated diphenyl ethers in the soil is lower in price and wide in sources, and can be used for batch production and application. The mixed eluting agent for removing the polybrominated diphenyl ethers in the soil can effectively overcome the problems that the polybrominated diphenyl ethers are strong in hydrophobicity, are not easily separated from the soil and the like. The mixed eluting agent for removing the polybrominated diphenyl ethers in the soil has good effect in soil remediation, and relatively high in elution rate.
Description
Technical field
The present invention relates to the renovation agent of organic polluted soil.
Background technology
Now, the Negative environment effect that electronic waste brings has become the topic of domestic and global close attention.Disassemble in process at the electronic waste of extensive style, a large amount of hydrophobic organic compounds discharges from electronic original part, enters in the edatope of surrounding, and carries out Transport And Transformation along with surrounding medium.Because Polybrominated biphenyl ethers material has very strong hydrophobicity, therefore investigator is difficult to find effective means to be degraded.Although have some scholars to carry out the researchs such as microbiological deterioration, photodegradation, Nanoscale Iron reduction-debromination, the not realistic situation of most of research system at present.Poly Brominated Diphenyl Ethers is in soil, can combine closely with the soil organism, this hinders microorganism to a great extent to its utilization, be also unfavorable for that nano material contacts with it and reacts, therefore in process Poly Brominated Diphenyl Ethers contaminated soil, a step of most critical is exactly first make it separate from soil, improves its solubleness in the solution.
Summary of the invention
The present invention is difficult to remove Poly Brominated Diphenyl Ethers in soil completely to solve prior art, thus provides a kind of mixing eluent removing soil Poly Brominated Diphenyl Ethers, and described mixing eluent cost is low and efficient.
Technical scheme of the present invention is as follows:
Remove an eluent for Poly Brominated Diphenyl Ethers in soil, comprise the aqueous solution of Triton X-100 and dimethyl sulfoxide (DMSO), the concentration of Triton X-100 is 0.8 ~ 4g/L (i.e. 1.28 ~ 6.4mmol/L), and dimethyl sulfoxide (DMSO) accounts for 10 ~ 15% of overall solution volume.Described Poly Brominated Diphenyl Ethers is '-dibromobiphenyl ether BDE-15.
Described dimethyl sulfoxide (DMSO) accounts for 10% of overall solution volume.
The preparation method of above-mentioned eluent, comprises the steps: Triton X-100 to be added to the water abundant dissolving, leaves standstill 12 hours, adds dimethyl sulfoxide (DMSO) and make its volume ratio reach 10 ~ 15%, i.e. obtained described eluent.
The application of described eluent in Poly Brominated Diphenyl Ethers contaminated soil remediation.
Have particular application as: get Poly Brominated Diphenyl Ethers contaminated soil, add described eluent, mixing vibration drip washing, namely completes Poly Brominated Diphenyl Ethers contaminated soil remediation.
10L eluent is added in every kilogram of soil.
The time of described mixing vibration drip washing is 48h.
Triton X-100 tensio-active agent can form micella, provides hydrophobic space to Poly Brominated Diphenyl Ethers, reduction soil-water interfacial tension that simultaneously can be larger.By hydrophobicity distribution principle, a large amount of Poly Brominated Diphenyl Ethers can be transferred in solution from soil, thus improves the utilizability of Poly Brominated Diphenyl Ethers.Under the effect of Triton X-100, the maximum resolution factor of Poly Brominated Diphenyl Ethers can reach 67.3%.In addition, by reducing micella-water interfacial tension, the volume of micellar hydrophobic core can be increased, therefore can improve the resolution factor of Poly Brominated Diphenyl Ethers further adding of dimethyl sulfoxide (DMSO).Under the acting in conjunction of dimethyl sulfoxide (DMSO) and Triton X-100, the resolution factor of Poly Brominated Diphenyl Ethers is maximum reaches 92.9%.Therefore, in described removal soil, the mixing eluent of Poly Brominated Diphenyl Ethers is that ideal repairs medicament efficiently.
Accompanying drawing explanation
Fig. 1 is the resolution factor of pollutent under the effect of embodiment 1 eluent in Poly Brominated Diphenyl Ethers contaminated soil.
Fig. 2 is that the independent dimethyl sulfoxide solvent of embodiment 2 is to the resolution factor of '-dibromobiphenyl ether in soil.
Fig. 3 is the parsing effect of eluent combination to '-dibromobiphenyl ether in soil of embodiment 3.
Fig. 4 is the parsing effect of eluent combination to '-dibromobiphenyl ether in soil of embodiment 4.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto, and for the processing parameter do not indicated especially, can refer to routine techniques and carry out.
Embodiment 1
A kind of eluent removing Poly Brominated Diphenyl Ethers in soil, be made up of the aqueous solution of Triton X-100 (nonionogenic tenside) and dimethyl sulfoxide (DMSO) (DMSO), the concentration of Triton X-100 is 4g/L, and the volume ratio of dimethyl sulfoxide (DMSO) and overall solution volume is 10%.
The preparation method of above-mentioned eluent: Triton X-100 is added to the water abundant dissolving, leaves standstill 12 hours, adds dimethyl sulfoxide (DMSO) and make its volume ratio reach 10%, i.e. obtained described eluent.
The volume ratio preparing dimethyl sulfoxide (DMSO) and overall solution volume according to the method described above is respectively the eluent of 0.5%, 15%.
Triton X-100-dimethyl sulfoxide (DMSO) mixing eluent is to the analyzing efficiency of Poly Brominated Diphenyl Ethers in soil
Test materials: '-dibromobiphenyl ether (BDE-15), nonionogenic tenside (Triton X-100), dimethyl sulfoxide (DMSO) (DMSO).In test simulation contaminated soil, the concentration of '-dibromobiphenyl ether is 220.12mg/kg.
Adopt the concentration of '-dibromobiphenyl ether in Angilent1200 type high-performance liquid chromatogram determination solution.
Test method: take 2g contaminated soil in the centrifuge tube with tetrafluoroethylene pad, adds the mixing eluent described in 20ml.Research dimethyl sulfoxide (DMSO) and the independent eluent of Triton X-100 are to the resolution factor of '-dibromobiphenyl ether simultaneously.Application batch balanced oscillator method, sample is placed in 25 DEG C, rotating speed is in the shaking table of 150rpm, vibrates after 48 hours and samples.Sample is centrifugal 30min in the whizzer of 4000rpm/min, gets 1ml supernatant liquor, measures with after methanol dilution 10 times.
As shown in Figure 1, the resolution factor the highest of the independent eluent of Triton X-100 to '-dibromobiphenyl ether reaches 67.3%, after adding the dimethyl sulfoxide (DMSO) of 10%, in soil, the resolution factor of '-dibromobiphenyl ether can reach 92.9%, illustrates that dimethyl sulfoxide (DMSO) fully facilitates the parsing of '-dibromobiphenyl ether.Therefore provable, the combination eluent of Triton X-100/dimethyl sulfoxide (DMSO) can be used for the reparation of Poly Brominated Diphenyl Ethers contaminated soil.
Embodiment 2
Utilize dimethyl sulfoxide (DMSO) separate solvent to resolve '-dibromobiphenyl ether in soil, be made up of dimethyl sulphoxide aqueous solution, the volume ratio of dimethyl sulfoxide (DMSO) is 0.5 ~ 20%.The preparation method of dimethyl sulfoxide (DMSO) and to the operation steps of the parsing of '-dibromobiphenyl ether in soil with embodiment 1.Fig. 2 shows, independent dimethyl sulfoxide solvent can only reach 5% to the resolution factor of '-dibromobiphenyl ether is the highest in soil, almost negligible.Therefore further demonstrate Triton X-100 and dimethyl sulfoxide (DMSO) has synergy, after compound, just can reach better analyzing efficiency.
Embodiment 3
Compared for the parsing effect of different eluent combination to '-dibromobiphenyl ether in soil, be made up of the aqueous solution of Triton X-100 (nonionogenic tenside) and methyl alcohol, the concentration of Triton X-100 is 4g/L, and the volume ratio of methyl alcohol is 0.5% ~ 20%.
The preparation method of above-mentioned eluent: Triton X-100 is added to the water abundant dissolving, leaves standstill 12 hours, adds methyl alcohol and make its volume ratio reach 0.5 ~ 20%, i.e. obtained described eluent.
Triton X-100-methanol mixed eluent is to the analyzing efficiency of Poly Brominated Diphenyl Ethers in soil
Test materials: '-dibromobiphenyl ether (BDE-15), nonionogenic tenside (Triton X-100), methanol solvate.In test simulation contaminated soil, the concentration of '-dibromobiphenyl ether is 220.12mg/kg.
Adopt the concentration of '-dibromobiphenyl ether in Angilent1200 type high-performance liquid chromatogram determination solution.
Test method: take 2g contaminated soil in the centrifuge tube with tetrafluoroethylene pad, adds the mixing eluent described in 20ml.Research methyl alcohol and the independent eluent of Triton X-100 are to the resolution factor of '-dibromobiphenyl ether simultaneously.Application batch balanced oscillator method, sample is placed in 25 DEG C, rotating speed is in the shaking table of 150rpm, vibrates after 48 hours and samples.Sample is centrifugal 30min in the whizzer of 4000rpm/min, gets 1ml supernatant liquor, measures with after methanol dilution 10 times.
Fig. 3 shows, add methyl alcohol in Triton X-100 solution after, the analyzing efficiency of '-dibromobiphenyl ether has had lifting to a certain degree, and the highest resolution factor can reach 78.7%.It is a lot of that this effect and Triton X-100-dimethyl sulfoxide (DMSO) combine phase ratio.Therefore illustrated by above several example, Triton X-100-dimethyl sulfoxide (DMSO) is the drip washing medicament with development prospect.
Embodiment 4
The difference of the present embodiment and embodiment 3 is, solvent for use is ethanol.Fig. 4 shows, add ethanol in Triton X-100 solution after, the analyzing efficiency of '-dibromobiphenyl ether has had lifting to a certain degree, and the highest resolution factor can reach 77.5%.It is a lot of that this effect and Triton X-100-dimethyl sulfoxide (DMSO) combine phase ratio.
Claims (9)
1. remove an eluent for Poly Brominated Diphenyl Ethers in soil, it is characterized in that, comprise the aqueous solution of Triton X-100 and dimethyl sulfoxide (DMSO), the concentration of Triton X-100 is 0.8 ~ 4g/L, and dimethyl sulfoxide (DMSO) accounts for 10 ~ 15% of overall solution volume.
2. eluent according to claim 1, is characterized in that, described Poly Brominated Diphenyl Ethers is '-dibromobiphenyl ether BDE-15.
3. eluent according to claim 1 and 2, is characterized in that, the concentration of described Triton X-100 is 4g/L, and dimethyl sulfoxide (DMSO) accounts for 10% of overall solution volume.
4. the preparation method of eluent according to claim 1 or 2 or 3, it is characterized in that, comprise the steps: Triton X-100 to be added to the water abundant dissolving, leave standstill 12 hours, adding dimethyl sulfoxide (DMSO) makes its volume ratio reach 10 ~ 15%, i.e. obtained described eluent.
5. the application of eluent in Poly Brominated Diphenyl Ethers contaminated soil remediation described in claim 1 or 2 or 3.
6. application according to claim 5, is characterized in that, gets Poly Brominated Diphenyl Ethers contaminated soil, adds described eluent, and mixing vibration drip washing, namely completes Poly Brominated Diphenyl Ethers contaminated soil remediation.
7. the application according to claim 5 or 6, is characterized in that, adds 10L eluent in every kilogram of soil.
8. the application according to claim 5 or 6, is characterized in that, the time of described mixing vibration drip washing is 48h.
9. application according to claim 7, is characterized in that, the time of described mixing vibration drip washing is 48h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246785A (en) * | 2017-12-15 | 2018-07-06 | 昆明理工大学 | A kind of method for enhancing phytoremediation polycyclic aromatic hydrocarbon pollution efficiency |
| CN108284125A (en) * | 2018-03-30 | 2018-07-17 | 昆明理工大学 | A kind of method of continuous eluent solvent renovation of organic pollution soil |
-
2014
- 2014-10-22 CN CN201410566929.0A patent/CN104403673A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| XINGJIAN YANG: "Solubilization of 4,4′-dibromodiphenyl ether under combined TX-100 and cosolvents", 《ENVIRON SCI POLLUT RES》 * |
| 张方立等: "不同淋洗剂对土壤中多氯联苯的洗脱", 《环境科学研究》 * |
| 彭立君等: "淋洗修复重金属和多环芳烃复合污染土壤的", 《化工环保》 * |
| 陈涛等: "表面活性剂对土壤中多氯联苯的洗脱研究", 《环境科学与技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246785A (en) * | 2017-12-15 | 2018-07-06 | 昆明理工大学 | A kind of method for enhancing phytoremediation polycyclic aromatic hydrocarbon pollution efficiency |
| CN108246785B (en) * | 2017-12-15 | 2020-12-15 | 昆明理工大学 | Method for enhancing efficiency of phytoremediation of polycyclic aromatic hydrocarbon-polluted soil |
| CN108284125A (en) * | 2018-03-30 | 2018-07-17 | 昆明理工大学 | A kind of method of continuous eluent solvent renovation of organic pollution soil |
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Application publication date: 20150311 |