CN106986406B - Method for removing bis-p-chlorophenyl trichloroethane - Google Patents
Method for removing bis-p-chlorophenyl trichloroethane Download PDFInfo
- Publication number
- CN106986406B CN106986406B CN201710247118.8A CN201710247118A CN106986406B CN 106986406 B CN106986406 B CN 106986406B CN 201710247118 A CN201710247118 A CN 201710247118A CN 106986406 B CN106986406 B CN 106986406B
- Authority
- CN
- China
- Prior art keywords
- organic solvent
- adsorbed
- water
- porous
- bis
- 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.)
- Active
Links
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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/306—Pesticides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
A method for removing bis-p-chlorophenyl trichloroethane, comprising the steps of: the first step is as follows: soaking porous polydimethylsiloxane into an organic solvent to fill the organic solvent into pores of the porous polydimethylsiloxane to obtain the porous polydimethylsiloxane adsorbed with the organic solvent, wherein the organic solvent is toluene, n-hexane or trichloromethane; the second step is that: and putting the porous polydimethylsiloxane adsorbed with the organic solvent into water to be treated, and stirring to ensure that the bis-p-chlorophenyl trichloroethane in the water is adsorbed to the porous polydimethylsiloxane adsorbed with the organic solvent. The invention establishes a porous PDMS liquid phase binding system for enriching trace DDT in a water sample and establishes a method for efficiently and quickly enriching DDT in water to remove DDT.
Description
Technical Field
The invention belongs to the technical field of water treatment, and relates to a method for removing bis-p-chlorophenyl trichloroethane.
Background
DDT is named as dichlorodiphenyl trichloroethane in Chinese, has a chemical name of bis-p-chlorophenyl trichloroethane, and is a widely used organochlorine pesticide. It is a odorless and tasteless white crystal, is insoluble in water, is soluble in most organic solvents, grease and fat, and is particularly easy to produce enrichment effect in an ecological system. DDT has physiological and "trio" effects that can be extremely harmful to the ecological environment and human health, and DDT and similar compounds DDD, DDE are 3 of the 20 pesticides listed as the priority pollutants by the U.S. EPA, and are also the first persistent organic pollutants of the international pops convention. Although the use of DDT began to be banned or restricted in many countries in the 50's of the 20 th century, malaria, dengue fever, yellow fever, etc. were heavily charged worldwide, and the World Health Organization (WHO) announced re-enabling DDT to cope with this problem. Due to the structures of the benzene ring and the substituent chlorine atom, the DDT compound has super strong photolysis resistance, chemical decomposition resistance and biodegradation resistance. The traditional physical and chemical methods have not ideal treatment effect on DDT, and bioadsorption and degradation are one of the most potential methods for solving DDT pollution, but the selectivity of the biological pair compound is high, the time consumption is long, and the bioremediation effect is relatively worse especially when the content of DDT in a water sample is low.
Disclosure of Invention
The invention aims to provide a method for removing bis-p-chlorophenyl trichloroethane.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a method for removing bis-p-chlorophenyl trichloroethane, comprising the steps of:
the first step is as follows: soaking porous polydimethylsiloxane into an organic solvent to fill the organic solvent into pores of the porous polydimethylsiloxane to obtain the porous polydimethylsiloxane adsorbed with the organic solvent, wherein the organic solvent is toluene, n-hexane or trichloromethane;
the second step is that: and putting the porous polydimethylsiloxane adsorbed with the organic solvent into water to be treated, and stirring to ensure that the bis-p-chlorophenyl trichloroethane in the water is adsorbed to the porous polydimethylsiloxane adsorbed with the organic solvent.
The preferable technical scheme is as follows: the organic solvent is n-hexane.
The preferable technical scheme is as follows: the time of the second step treatment is greater than or equal to 2.5 hours.
The preferable technical scheme is as follows: sodium chloride is added to the water in an amount of 20% by mass or more of the water.
Due to the application of the technical scheme, compared with the prior art, the invention has the advantages that:
the invention establishes a porous PDMS liquid phase binding system for enriching trace DDT in a water sample and establishes a method for efficiently and quickly enriching DDT in water to remove DDT.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The first embodiment is as follows: method for removing bis-p-chlorophenyl trichloroethane
A method for removing bis-p-chlorophenyl trichloroethane, comprising the steps of:
the first step is as follows: soaking porous polydimethylsiloxane into an organic solvent to fill the organic solvent into pores of the porous polydimethylsiloxane to obtain the porous polydimethylsiloxane adsorbed with the organic solvent, wherein the organic solvent is toluene;
the second step is that: and putting the porous polydimethylsiloxane adsorbed with the organic solvent into water to be treated, and stirring to ensure that the bis-p-chlorophenyl trichloroethane in the water is adsorbed to the porous polydimethylsiloxane adsorbed with the organic solvent.
The preferred embodiment is: the time for the second treatment was 3 hours.
The preferred embodiment is: sodium chloride was added to the water in an amount of 20% by mass of the water.
And (3) after enriching for a period of time, taking out the porous PDMS material, extruding, putting into a centrifugal tube, centrifuging at 4000r/min for 5 minutes, taking the organic solvent, wherein the porous PDMS can be recycled. The results show that: the recovery of toluene was 23.5%.
Example two: method for removing bis-p-chlorophenyl trichloroethane
A method for removing bis-p-chlorophenyl trichloroethane, comprising the steps of:
the first step is as follows: immersing porous polydimethylsiloxane into an organic solvent to fill the organic solvent into pores of the porous polydimethylsiloxane to obtain the porous polydimethylsiloxane adsorbed with the organic solvent, wherein the organic solvent is n-hexane;
the second step is that: and putting the porous polydimethylsiloxane adsorbed with the organic solvent into water to be treated, and stirring to ensure that the bis-p-chlorophenyl trichloroethane in the water is adsorbed to the porous polydimethylsiloxane adsorbed with the organic solvent.
The preferred embodiment is: the time for the second treatment was 2.5 hours.
The preferred embodiment is: sodium chloride was added to the water in an amount of 25% by mass of the water.
The results show that: the recovery rate of n-hexane was 108.32%.
The results show that: since NaCl is a very polar compound, it increases the polarity of the solution, thereby decreasing the solubility of DDT in aqueous solution. When the concentration of NaCl in the aqueous solution is continuously increased, van der waals force of DDT and NaCl ion concentration is increased, so that the transfer rate between the two is decreased, and thus the enrichment efficiency shows a downward trend after 20%.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (3)
1. A method for removing bis-p-chlorophenyl trichloroethane is characterized in that: comprises the following steps:
the first step is as follows: soaking porous polydimethylsiloxane into an organic solvent to fill the organic solvent into pores of the porous polydimethylsiloxane to obtain the porous polydimethylsiloxane adsorbed with the organic solvent, wherein the organic solvent is toluene, n-hexane or trichloromethane;
the second step is that: putting the porous polydimethylsiloxane adsorbed with the organic solvent into water to be treated, and stirring to ensure that the bis-p-chlorophenyl trichloroethane in the water is adsorbed to the porous polydimethylsiloxane adsorbed with the organic solvent;
the time of the second step treatment is greater than or equal to 2.5 hours.
2. The process for the removal of bis-p-chlorophenyl trichloroethane as claimed in claim 1, wherein: the organic solvent is n-hexane.
3. The process for the removal of bis-p-chlorophenyl trichloroethane as claimed in claim 1, wherein: sodium chloride is added to the water in an amount of 20% by mass or more of the water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247118.8A CN106986406B (en) | 2017-04-17 | 2017-04-17 | Method for removing bis-p-chlorophenyl trichloroethane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247118.8A CN106986406B (en) | 2017-04-17 | 2017-04-17 | Method for removing bis-p-chlorophenyl trichloroethane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106986406A CN106986406A (en) | 2017-07-28 |
| CN106986406B true CN106986406B (en) | 2021-01-05 |
Family
ID=59415182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710247118.8A Active CN106986406B (en) | 2017-04-17 | 2017-04-17 | Method for removing bis-p-chlorophenyl trichloroethane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106986406B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068026A1 (en) * | 2011-11-07 | 2013-05-16 | Tehran University Of Medical Sciences (Tums), Faculty Of Environmental University Of Tehran | Development of a new coating for sorptive extraction by stir bars |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024527A (en) * | 2007-02-06 | 2007-08-29 | 天津大学 | Use of modified montmorillonite as organic chlorine farm chemicals adsorbant in dewatering system |
-
2017
- 2017-04-17 CN CN201710247118.8A patent/CN106986406B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068026A1 (en) * | 2011-11-07 | 2013-05-16 | Tehran University Of Medical Sciences (Tums), Faculty Of Environmental University Of Tehran | Development of a new coating for sorptive extraction by stir bars |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106986406A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103877953B (en) | A kind of hydrogel for sewage disposal and preparation method thereof | |
| Zhou et al. | Cellulose/chitin beads for adsorption of heavy metals in aqueous solution | |
| CN106311185B (en) | A kind of polyvinyl alcohol/Aminosilylation graphene oxide macropore composite balls and its preparation method and application | |
| CN108467036B (en) | Desiliconized rice hull-based activated carbon and preparation method and application thereof | |
| RU2015125059A (en) | TOBACCO MATERIAL PROCESSING | |
| CN106853362B (en) | A kind of chitosan/aluminium hydroxide compound adsorbent preparation method for adsorbing fluorine | |
| CN107913677B (en) | Nano heavy metal wastewater ion adsorption microspheres and preparation method thereof | |
| CN102218445B (en) | Ultrasonic leaching method for restoring organic contaminated soils | |
| Husin et al. | Sorption equilibrium and kinetics of oil from aqueous solution using banana pseudostem fibers | |
| CN103962110A (en) | Multifunctional Fe3O4 magnetic nanometer material, as well as preparation method and application thereof | |
| CN106986406B (en) | Method for removing bis-p-chlorophenyl trichloroethane | |
| CN106040014B (en) | A kind of antioxidant nanofiltration membrane and preparation method thereof that nanocrystalline cellulose is compound | |
| CN109847597A (en) | A kind of high throughput high desalination reverse osmosis membrane and preparation method thereof | |
| CN103694770A (en) | Paint cleaning agent | |
| CN108722203A (en) | A kind of preparation method of high throughput polyphenyl amine composite nanofiltration membrane | |
| CN104014311A (en) | Preparation for removing hydrophobic bisphenol A in water in adsorption manner and application method | |
| Fosso-Kankeu et al. | Surfactant impregnated bentonite clay for the adsorption of anionic dyes | |
| Dai et al. | Hybrid extraction of oily sludge by tertiary amines and protonated tertiary amines | |
| Vijayakumaran et al. | Equilibrium and kinetic modeling on the removal of malachite green from aqueous solution using odina wodier bark carbon | |
| RU2529233C1 (en) | Method of producing modified activated carbon | |
| Fariba et al. | Nanocomposite silica aerogel activated carbon: preparation, characterization and application to remove lead (ii) from aqueous solutions | |
| CN104069799A (en) | Formaldehyde adsorbent capable of modifying coal cinder through acid | |
| CN102774949A (en) | Method for decolorizing cationic dye waste water | |
| CN109621894A (en) | A kind of methylene blue quick adsorption agent and preparation method | |
| CN108993390A (en) | A method of utilizing residual tetracycline in pharmacy waste water after ZnO support type expanded graphite removal flocculation treatment |
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 |