CN111014272A - Method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid - Google Patents
Method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid Download PDFInfo
- Publication number
- CN111014272A CN111014272A CN201911134568.1A CN201911134568A CN111014272A CN 111014272 A CN111014272 A CN 111014272A CN 201911134568 A CN201911134568 A CN 201911134568A CN 111014272 A CN111014272 A CN 111014272A
- Authority
- CN
- China
- Prior art keywords
- soil
- ionic liquid
- triethylamine
- temperature
- plants
- 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.)
- Granted
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]) slowly adds concentrated sulfuric acid solution into triethylamine solution at constant low temperature. After completion of mixing, it was allowed to stand at the same temperature. And removing residual water and amine by using a rotary evaporator to obtain triethylamine bisulfate ionic liquid. And mixing the soil or plant polluted by the heavy metal with the obtained ionic liquid to realize the removal of the heavy metal. Compared with the prior art, the method has the advantages of simple process, controllable operation conditions, excellent cost benefit, remarkable heavy metal removal effect and no negative influence on the soil structure and the ecological system. The ionic liquid has excellent recyclability.
Description
Technical Field
The invention belongs to the technical field of new materials and application thereof, relates to removal of heavy metals in soil, and particularly relates to a method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid.
Background
With the development process of global industrialization, heavy metal elements are widely applied to a plurality of fields. A large amount of waste containing heavy metals is directly or indirectly discharged into the environment, so that the soil and plants are polluted, and the human health is greatly threatened, so that the finding of an effective method for separating and removing heavy metal ions is increasingly important. The prior method for separating and removing heavy metals in soil mainly comprises the following steps: liquid-liquid extraction, liquid-phase micro-extraction, solid-phase separation, cloud point separation, ion exchange, plant extraction and the like. The traditional liquid-liquid extraction method has high extraction rate, but the extraction process needs to consume a large amount of organic solvent, so that the cost is high, and secondary pollution is caused to the environment. Plant extraction is a promising, effective and low-cost process, utilizes the high heavy metal accumulation and rapid growth capacity of short-period plants to restore polluted soil, and does not cause adverse effect on soil structure or interfere with ecological system. Therefore, how to treat plants rich in heavy metals safely and effectively becomes a new challenging subject. The current methods for treating plants rich in heavy metals mainly comprise: mechanical methods (grinding, drying, ball milling, etc.), biochemical methods (hydrolysis, etc.), chemical methods, and water chemical pretreatment methods.
The technical problem of low extraction efficiency of separation and extraction technology of green biological materials and resins is faced, so that more attention is paid to the ionic liquid called green solvent. The ionic liquid is a molten salt composed of organic cations and organic/inorganic anions, and has many unique properties, such as low volatility, wide electrochemical window, strong conductivity, high ion mobility, easy recovery, adjustable structural characteristics, and the like. The ionic liquid can replace the traditional organic solvent to be used for extraction and separation of heavy metal ions, and has little pollution to the environment.
At the same time, the current ionic liquids still have disadvantages such as high price, low thermal stability, high viscosity and low moisture tolerance.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]), which takes cheap concentrated sulfuric acid and triethylamine as raw materials to prepare the ionic liquid with cheap price, good thermal stability, moderate viscosity and high water tolerance. As an extraction separation medium of soil heavy metal or plant heavy metal, the ionic liquid has the advantages of low cost, stable property, high metal universality and high removal efficiency; and the whole process is simple to operate, and the preparation conditions are easy to control.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]) comprises the following steps:
(1) preparation of Ionic liquids
Slowly adding a concentrated sulfuric acid solution (95.0-98.0 wt.%) to a triethylamine solution (99 wt.%) in a constant low temperature ice-water bath, the constant low temperature being 0-5 ℃, preferably 4 ℃, wherein the molar ratio of the concentrated sulfuric acid solution to the triethylamine solution is 1: 0.8-1.2, preferably 1:1, and after the mixing is completed, the mixture is allowed to stand at the same temperature for 30-60 minutes, preferably 30 minutes.
(2) Rotary evaporation
Putting the clear solution obtained in the step (1) into a rotary evaporator until water and redundant amine are completely sublimated and escaped;
in particular, when the mixing reaction is complete, the solution is placed in a rotary evaporator at a temperature of 70-85 ℃, preferably 80 ℃, at a rotation speed of 100-300r/min, preferably 200r/min, for a period of 8-12 hours, preferably 10 hours, until the excess water and amine are evaporated and escape.
(3) Intermediate temperature solid-liquid reaction
And (3) mixing the ionic liquid obtained in the step (2) with the dried heavy metal contaminated soil or the dried and ground plant sample in proportion, heating to a specified temperature, and reacting for a certain time to complete the process of removing the heavy metal in the soil by the ionic liquid.
Particularly, in the step (3), the soil polluted by the heavy metal or the plant sample after drying and grinding is cleaned and then ground into fine particles, and the particle size of the soil polluted by the heavy metal is 10-30 meshes, and is preferably less than 30 meshes. The dried and ground plant samples have particle sizes of 0.05, 0.25, 0.35, 0.45 and 0.65mm, preferably 0.35mm, and are dried at 60-90 deg.C, preferably 60 deg.C, for use. Mixing the dried and sieved soil with triethylamine bisulfate ionic liquid according to a proportion (1: 10-1: 30), preferably 1: 30 at 75-105 ℃, the heavy metal contaminated soil is preferably treated at 75 ℃, the dried and ground plant sample is preferably treated at 90 ℃, and the reaction time is 4-8h, preferably 8 h.
Further, after the moderate temperature solid-liquid reaction, the recovery of the ionic liquid and the collection of the treated soil or plant sample are carried out: after the reaction system is cooled to normal temperature, washing out the soil or plant sample by using 97% ethanol solution, and transferring the soil or plant sample into a 50mL centrifuge tube; the centrifuge is used, the centrifuge operating temperature is 10-20 ℃, preferably 15 ℃, and the rotation speed is 1800-2200Xg, preferably 2000 Xg. The centrifugation time is 50-60 minutes, preferably 50 minutes, and the ethanol centrifugation solution is collected. The centrifugation process was repeated 3 times. After centrifugation, the soil or plant sample is transferred to a cellulose cannula, the ethanol centrifugate is placed into a round-bottom flask, and the ionic liquid residue in the soil or plant sample is removed by utilizing a Soxhlet extraction device, wherein the temperature of the device is 120-180 ℃, preferably 150 ℃, and the extraction time is 12-24 hours, preferably 20 hours.
The plant in the invention is particularly a plant which is enriched with heavy metals because of absorbing the heavy metals in the soil after the contaminated soil is repaired by plant extraction.
Compared with the prior art, the method has the advantages of simple process, easily controlled operating conditions, guaranteed property of the ionic liquid, cost control, obvious heavy metal removal effect, no negative influence on the soil structure and the ecological system, and excellent recycling value of the obtained ionic liquid.
Detailed Description
In order to facilitate understanding for those skilled in the art, the concept of the present invention will be further described with reference to the following examples. Meanwhile, various raw materials designed in the specification are purchased from the market.
Example 1
A method for removing heavy metals in soil by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]) comprises the following steps:
(1) preparation of Ionic liquids
In a constant low temperature (4 ℃) ice-water bath, 150mL of a 5M concentrated sulfuric acid solution (95.0-98.0 wt.%) was slowly added to 104.5mL of a triethylamine solution (99 wt.%). After the mixing is finished, continuously standing for thirty minutes at the same temperature;
(2) rotary evaporation
Putting the clear solution obtained in the step (1) into a rotary evaporator until water and redundant amine are completely sublimated and escaped;
particularly, after the mixing reaction is completed, the solution is placed in a rotary evaporator at the temperature of 80 ℃ and the rotating speed of 200r/min for 10 hours until the excessive moisture and amine are evaporated and escaped.
(3) Intermediate temperature solid-liquid reaction
Cleaning the heavy metal contaminated soil, grinding into fine particles (below 30 meshes), and drying at 60 ℃ for later use. Mixing the dried and sieved soil and triethylamine bisulfate ionic liquid according to the weight ratio of 1: mixing at a ratio of 30 ℃ and reacting for 8 hours at a temperature of 90 ℃. After the reaction system is cooled to normal temperature, washing out a soil sample by using 97% ethanol solution, and transferring the soil sample into a 50mL centrifuge tube; the solution was centrifuged at 2000Xg for 50 minutes at 15 ℃ using a centrifuge, and the ethanol centrifugation solution was collected. The centrifugation process was repeated 3 times. After centrifugation, the soil was transferred to a cellulose thimble and the ethanol centrate was placed in a round bottom flask using a Soxhlet extraction apparatus at 150 ℃ for 20 hours to remove ionic liquid residues from the soil sample.
The removal rate of soil heavy metal As is 82.1%, the removal rate of Cd is 96.6%, the removal rate of Fe is 54.9%, the removal rate of Mn is 94.8% and the removal rate of Zn is 64.0% are detected.
Example 2
A method for removing heavy metals in soil by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]) comprises the following steps:
(1) preparation of Ionic liquids
In a constant low temperature (4 ℃) ice-water bath, 150mL of a 5M concentrated sulfuric acid solution (95.0-98.0 wt.%) was slowly added to 104.5mL of a triethylamine solution (99 wt.%). After the mixing is finished, continuously standing for thirty minutes at the same temperature;
(2) rotary evaporation
Putting the clear solution obtained in the step (1) into a rotary evaporator until water and redundant amine are completely sublimated and escaped;
in particular, after the mixing reaction is completed, the solution is placed in a rotary evaporator at the temperature of 85 ℃ and the rotating speed of 100r/min for 12 hours until the excessive moisture and amine are evaporated and escaped.
(3) Intermediate temperature solid-liquid reaction
Cleaning the heavy metal contaminated soil, grinding into fine particles (below 30 meshes), and drying at 60 ℃ for later use. Mixing the dried and sieved soil and triethylamine bisulfate ionic liquid according to the weight ratio of 1: mixing at a ratio of 20 ℃ and reacting for 6 hours at a temperature of 90 ℃. After the reaction system is cooled to normal temperature, washing out a soil sample by using 97% ethanol solution, and transferring the soil sample into a 50mL centrifuge tube; the solution was centrifuged at 2000Xg for 50 minutes at 15 ℃ using a centrifuge, and the ethanol centrifugation solution was collected. The centrifugation process was repeated 3 times. After centrifugation, the soil was transferred to a cellulose thimble and the ethanol centrate was placed in a round bottom flask using a Soxhlet extraction apparatus at 150 ℃ for 20 hours to remove ionic liquid residues from the soil sample.
The removal rate of the heavy metal As in the soil is 58%, the removal rate of Cd is 96.4%, the removal rate of Fe is 61.8%, the removal rate of Mn is 91.2% and the removal rate of Zn is 67.1% are detected.
Example 3
A method for removing heavy metals in plants by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]) comprises the following steps:
(1) preparation of Ionic liquids
In a constant low temperature (4 ℃) ice-water bath, 150ml of a 5M concentrated sulfuric acid solution (95.0-98.0 wt.%) was slowly added to 104.5ml of triethylamine solution (99 wt.%). After the mixing is finished, continuously standing for thirty minutes at the same temperature;
(2) rotary evaporation
Putting the clear solution obtained in the step (1) into a rotary evaporator until water and redundant amine are completely sublimated and escaped;
particularly, after the mixing reaction is completed, the solution is placed in a rotary evaporator at the temperature of 80 ℃ and the rotating speed of 200r/min for 10 hours until the excessive moisture and amine are evaporated and escaped.
(3) Intermediate temperature solid-liquid reaction
Cleaning plants (willow branches and leaves) growing in heavy metal contaminated soil, grinding into fine particles (0.35mm), and drying at 60 deg.C for use. Mixing the dried and sieved plants with triethylamine bisulfate ionic liquid according to the weight ratio of 1: mixing at a ratio of 30 ℃ and reacting for 8 hours at a temperature of 90 ℃. After the reaction system is cooled to normal temperature, washing out the plant sample by using 97% ethanol solution, and transferring the plant sample into a 50mL centrifuge tube; the solution was centrifuged at 2000Xg for 50 minutes at 15 ℃ using a centrifuge, and the ethanol centrifugation solution was collected. The centrifugation process was repeated 3 times. After centrifugation, the plant sample was transferred to a cellulose thimble and the ethanol centrate was placed in a round bottom flask using a Soxhlet extraction apparatus at 150 ℃ for 20 hours to remove ionic liquid residues from the plant sample.
The removal rate of heavy metal Cd in the plant is detected to be 72.66%, the removal rate of Zn is detected to be 89.47%, the removal rate of Fe is detected to be 74.51%, the removal rate of Mn is detected to be 87.53%, and the removal rate of Cu is detected to be 100%.
Example 4
A method for removing heavy metals in plants by using triethylamine bisulfate ionic liquid ([ TEA ] [ HSO4]) comprises the following steps:
(1) preparation of Ionic liquids
In a constant low temperature (4 ℃) ice-water bath, 150ml of a 5M concentrated sulfuric acid solution (95.0-98.0 wt.%) was slowly added to 104.5ml of triethylamine solution (99 wt.%). After the mixing is finished, continuously standing for thirty minutes at the same temperature;
(2) rotary evaporation
Putting the clear solution obtained in the step (1) into a rotary evaporator until water and redundant amine are completely sublimated and escaped;
in particular, after the mixing reaction is completed, the solution is placed in a rotary evaporator at the temperature of 85 ℃ and the rotating speed of 100r/min for 12 hours until the excessive moisture and amine are evaporated and escaped.
(3) Intermediate temperature solid-liquid reaction
Cleaning plants (willow branches and leaves) growing in heavy metal contaminated soil, grinding into fine particles (0.35mm), and drying at 60 deg.C for use. Mixing the dried and sieved plants with triethylamine bisulfate ionic liquid according to the weight ratio of 1: mixing at a ratio of 30, and reacting at 105 ℃ for 6 hours. After the reaction system is cooled to normal temperature, washing out the plant sample by using 97% ethanol solution, and transferring the plant sample into a 50mL centrifuge tube; the solution was centrifuged at 2000Xg for 50 minutes at 15 ℃ using a centrifuge, and the ethanol centrifugation solution was collected. The centrifugation process was repeated 3 times. After centrifugation, the plant sample was transferred to a cellulose thimble and the ethanol centrate was placed in a round bottom flask using a Soxhlet extraction apparatus at 150 ℃ for 20 hours to remove ionic liquid residues from the plant sample.
The removal rate of heavy metal Cd in the plant is detected to be 68.31%, the removal rate of Zn is detected to be 86.77%, the removal rate of Fe is detected to be 71.38%, the removal rate of Mn is detected to be 75.09%, and the removal rate of Cu is detected to be 100%.
Claims (10)
1. A method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid is characterized by comprising the following steps:
step (1) of preparing an ionic liquid
Slowly adding a concentrated sulfuric acid solution into a triethylamine solution at a constant low temperature, mixing, and standing at the constant low temperature to obtain a clear solution;
step (2), rotary evaporation
Putting the clear solution obtained in the step (1) into a rotary evaporator until water and redundant amine are completely sublimated and escaped to obtain ionic liquid;
step (3), intermediate temperature solid-liquid reaction
And (3) mixing the ionic liquid obtained in the step (2) with the dried heavy metal contaminated soil or the dried and ground plant sample, heating for reaction, and finishing the process of removing the heavy metal in the soil or the plant by the ionic liquid.
2. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein in the step (1), the constant low temperature is 0-5 ℃, and the molar ratio of the concentrated sulfuric acid solution to the triethylamine solution is 1: 0.8-1.2, the concentration of concentrated sulfuric acid solution is 95.0-98.0 wt.%, the concentration of triethylamine solution is 99.0 wt.%, and the standing time is 30-60 minutes.
3. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein in the step (1), the constant low temperature is 4 ℃, the molar ratio of the concentrated sulfuric acid solution to the triethylamine solution is 1:1, and the standing time is 30 minutes.
4. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein in the step (2), the temperature of the rotary evaporator is 70-85 ℃, the rotation speed is 100-.
5. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein in the step (2), the temperature of the rotary evaporator is 80 ℃, the rotation speed is 200r/min, and the time is 10 hours.
6. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein the mixing mass ratio of the ionic liquid obtained in the step (3) to the dried heavy metal contaminated soil or the dried and ground plant sample is 10-30: 1, heating at 75-105 ℃, reacting for 4-8h, wherein the particle size of the heavy metal contaminated soil is 10-30 meshes, and the particle sizes of the dried and ground plant samples are 0.05, 0.25, 0.35, 0.45 and 0.65 mm.
7. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein the mixing mass ratio of the ionic liquid obtained in the step (3) to the dried heavy metal contaminated soil or the dried and ground plant sample is 30: 1, the heating temperature of the heavy metal contaminated soil is 75 ℃, the particle size is 30 meshes, the heating temperature of the dried and ground plant sample is 90 ℃, the particle size is 0.35mm, and the reaction time is 8 hours.
8. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 1, wherein after the mesophilic-solid-liquid reaction in the step (3), the recovery of the ionic liquid and the collection of the treated soil or plant sample are carried out by the following steps:
after the reaction system is cooled to normal temperature, washing out the soil or plant sample by using an ethanol solution, transferring the soil or plant sample into a centrifuge tube, centrifuging, collecting the ethanol centrifugal solution, transferring the soil or plant sample into a cellulose sleeve after centrifugation, placing the ethanol centrifugal solution into a round-bottom flask, removing ionic liquid residues in the soil or plant sample by using a Soxhlet extraction device, placing the soil or plant sample with the residual ionic liquid removed in an oven, drying to constant weight, and testing, wherein the ionic liquid is collected for recycling.
9. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 8, wherein the concentration of the ethanol solution is 97%, the working temperature of the centrifuge is 10-20 ℃, the rotation speed is 1800-2200xg, the centrifugation time is 50-60 minutes, the centrifugation process is repeated for 3 times, the temperature of the Soxhlet extraction device is 120-180 ℃, the extraction time is 12-24 hours, and the temperature of the oven is 60-90 ℃.
10. The method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid as claimed in claim 8, wherein the concentration of the ethanol solution is 97%, the operating temperature of the centrifuge is 15 ℃, the rotating speed is 2000xg, the centrifugation time is 50 minutes, the centrifugation process is repeated for 3 times, the temperature of the Soxhlet extraction device is 150 ℃, the extraction time is 20 hours, and the temperature of the oven is 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911134568.1A CN111014272B (en) | 2019-11-19 | 2019-11-19 | Method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911134568.1A CN111014272B (en) | 2019-11-19 | 2019-11-19 | Method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111014272A true CN111014272A (en) | 2020-04-17 |
| CN111014272B CN111014272B (en) | 2021-06-15 |
Family
ID=70200615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911134568.1A Active CN111014272B (en) | 2019-11-19 | 2019-11-19 | Method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111014272B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210170379A1 (en) * | 2019-12-06 | 2021-06-10 | Centro de Investigación en Materiales Avanzados, S.C. | Hydration of alpha-Pinene to obtain alpha-terpineol, using an ionic liquid as solvent, which is synthesized from a tertiary amine and an inorganic acid |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527340A (en) * | 2011-12-16 | 2012-07-04 | 武汉凯迪工程技术研究总院有限公司 | Organic inorganic hybridized material for removing agent of heavy metal ions |
| CN102643170A (en) * | 2012-05-09 | 2012-08-22 | 河北工业大学 | Method for synthesizing para-tert-butylcatechol by using acid-mixed mixed system containing ionic liquid |
| CN102773078A (en) * | 2012-07-16 | 2012-11-14 | 武汉纺织大学 | Solid complexation extractant capable of simultaneously adsorbing cation and anion, and preparation and application thereof |
| CN103923315A (en) * | 2014-03-27 | 2014-07-16 | 济南大学 | Preparation method of modified polyaniline chelate resin with multiple coordination sites and adsorption performance of modified polyaniline chelate resin on heavy metal Cu<2+> |
| CN104289511A (en) * | 2014-08-21 | 2015-01-21 | 华南理工大学 | Eluting agent capable of synchronously removing polychlorinated biphenyl and heavy metal in soil, preparation method and application thereof |
| CN105363769A (en) * | 2015-12-17 | 2016-03-02 | 中国有色桂林矿产地质研究院有限公司 | Method for restoring cadmium-contaminated farmland soil |
| CN105478467A (en) * | 2016-01-25 | 2016-04-13 | 湖南农业大学 | Method for eluting heavy metals Cu, Zn, Pb and Cd in soil by use of EDTA calcium salt |
| DE102015008509A1 (en) * | 2015-07-03 | 2017-01-05 | Rainer Pommersheim | Process and technical process for cleaning contaminated soil using ionic liquids |
| CN106904703A (en) * | 2017-03-23 | 2017-06-30 | 湖北保灵华环保科技有限公司 | A kind of method of heavy-metal contaminated soil leachates treatment |
| CN107282624A (en) * | 2017-08-04 | 2017-10-24 | 王婧宁 | Remover for PCBs in Soil |
| CN109053912A (en) * | 2018-08-09 | 2018-12-21 | 山东东特环保科技有限公司 | A kind of preparation method of chelating agent and its application in heavy metal pollution medium |
| CN110076190A (en) * | 2019-05-09 | 2019-08-02 | 忻州师范学院 | A kind of restorative procedure of heavy-metal contaminated soil |
-
2019
- 2019-11-19 CN CN201911134568.1A patent/CN111014272B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527340A (en) * | 2011-12-16 | 2012-07-04 | 武汉凯迪工程技术研究总院有限公司 | Organic inorganic hybridized material for removing agent of heavy metal ions |
| CN102643170A (en) * | 2012-05-09 | 2012-08-22 | 河北工业大学 | Method for synthesizing para-tert-butylcatechol by using acid-mixed mixed system containing ionic liquid |
| CN102773078A (en) * | 2012-07-16 | 2012-11-14 | 武汉纺织大学 | Solid complexation extractant capable of simultaneously adsorbing cation and anion, and preparation and application thereof |
| CN103923315A (en) * | 2014-03-27 | 2014-07-16 | 济南大学 | Preparation method of modified polyaniline chelate resin with multiple coordination sites and adsorption performance of modified polyaniline chelate resin on heavy metal Cu<2+> |
| CN104289511A (en) * | 2014-08-21 | 2015-01-21 | 华南理工大学 | Eluting agent capable of synchronously removing polychlorinated biphenyl and heavy metal in soil, preparation method and application thereof |
| DE102015008509A1 (en) * | 2015-07-03 | 2017-01-05 | Rainer Pommersheim | Process and technical process for cleaning contaminated soil using ionic liquids |
| CN105363769A (en) * | 2015-12-17 | 2016-03-02 | 中国有色桂林矿产地质研究院有限公司 | Method for restoring cadmium-contaminated farmland soil |
| CN105478467A (en) * | 2016-01-25 | 2016-04-13 | 湖南农业大学 | Method for eluting heavy metals Cu, Zn, Pb and Cd in soil by use of EDTA calcium salt |
| CN106904703A (en) * | 2017-03-23 | 2017-06-30 | 湖北保灵华环保科技有限公司 | A kind of method of heavy-metal contaminated soil leachates treatment |
| CN107282624A (en) * | 2017-08-04 | 2017-10-24 | 王婧宁 | Remover for PCBs in Soil |
| CN109053912A (en) * | 2018-08-09 | 2018-12-21 | 山东东特环保科技有限公司 | A kind of preparation method of chelating agent and its application in heavy metal pollution medium |
| CN110076190A (en) * | 2019-05-09 | 2019-08-02 | 忻州师范学院 | A kind of restorative procedure of heavy-metal contaminated soil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210170379A1 (en) * | 2019-12-06 | 2021-06-10 | Centro de Investigación en Materiales Avanzados, S.C. | Hydration of alpha-Pinene to obtain alpha-terpineol, using an ionic liquid as solvent, which is synthesized from a tertiary amine and an inorganic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111014272B (en) | 2021-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111014272B (en) | Method for removing heavy metals in soil or plants by using triethylamine bisulfate ionic liquid | |
| CN105536715A (en) | Method for preparation of adsorption material by using maple leaf | |
| CN111468078B (en) | Reed stalk biochar composite material and application thereof in repairing cadmium-polluted soil | |
| CN113135581B (en) | Process for preparing magnesium potassium sulfate and potassium sulfate by extracting potassium from corn soaking liquid | |
| CN112076727A (en) | Heavy metal pollution repairing agent and preparation method thereof | |
| CN110639471B (en) | Ball-milling oxidation-sulfhydrylation modified biochar and preparation method and application thereof | |
| CN103849902A (en) | Recovery process of stibium and bismuth in copper electrolyte | |
| CN105198732A (en) | Method for extracting alpha-ketoglutaric acid from fermentation liquor | |
| CN110465262A (en) | The method for removing heavy metal cadmium in water removal using the modified Enteromorpha charcoal of potassium hydroxide | |
| CN104772111A (en) | Hydroxyl calcium phosphate-active carbon composite material and application thereof | |
| CN100469751C (en) | Process of rectifying gallic acid through eliminating metal impurity in small amount | |
| CN103981368B (en) | A kind of method of lithium in mesopore molecular sieve separation and recovery waste and old lithium ion battery | |
| CN111392712B (en) | Nitrogen modified mesoporous carbon material, preparation method thereof and application of nitrogen modified mesoporous carbon material as electro-adsorption desalination electrode material | |
| CN113135580A (en) | Process for preparing artificial carnallite and potassium chloride by extracting potassium from corn soaking solution | |
| CN111974352A (en) | Ramie leaf silicon-based biochar and preparation method and application thereof | |
| CN107831060A (en) | A kind of soil organic matter and its enrichment extracting method | |
| CN106179256A (en) | A kind of technique utilizing Folium fici microcarpae modification to prepare adsorbent | |
| CN104810071A (en) | Method and equipment for deep purifying of boron-containing radioactive waste liquid and recovery of boric acid | |
| CN114984930A (en) | Resin for separating Sr-90 in high-acid medium and preparation method thereof | |
| CN111574735B (en) | Polyvinylidene fluoride-based poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonate composite film and preparation and application thereof | |
| CN110183314B (en) | Chromatography purification method of quebrachitol | |
| CN109369339B (en) | Method for treating waste p-toluenesulfonic acid iron n-butanol solution | |
| CN109110765B (en) | Method for extracting silicon powder and silicon carbide from silicon wafer cutting waste sand mixture | |
| CN104974356A (en) | Method for extracting fulvic acid substances from diatomite | |
| CN113481014A (en) | Preparation and application methods of cadmium-polluted soil solid waste base passivator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |