130 results about "Trichlorophenol" patented technology

The invention relates to the technical field of preparation of environment functional materials, in particular to a magnetic composite material surface imprinting thermosensitive adsorbent, and a preparation method and the application thereof. The method comprises the following steps that: firstly, a ferroferric oxide/nerchinskite nanotube magnetic composite material is prepared by a solvent thermal synthesis method; secondly, the magnetic composite material is modified on ethenyl by using 3-(methacrylo) propyltrimethoxyl silane; and finally, the nerchinskite nanotube magnetic composite material is prepared by using the ethenyl-modified magnetic composite material as a substrate material, 2, 4, 5-trichlorophenol as a template molecule, methacrylate as a functional monomer, N-isopropylacrylamide as a thermosensitive functional monomer, ethylene glycol dimethacrylate as a cross-linking agent, and 2,2'-azodiisobutyronitrile as an initiator. The prepared thermosensitive imprinting adsorbent is obvious in thermal stability and magnetic stability, sensitive in magnetic effect and thermosensitive effect, relatively high in adsorption capacity, obvious in reversible absorption/release function along with temperature and obvious in tertiary calcium phosphate (TCP) molecule recognition performance.

The invention belongs to the technical field of semiconductor photocatalysis, and in particular relates to a sulfur doped graphite phase carbon nitride pholocatalyst and application thereof in photocatalysis TCP (2,4,6-trichlorophenol) degradation reaction and photocatalysis hydrogen preparation reaction. A dielectric barrier discharge plasma generator is adopted, and H2S is used as a discharge gas to perform discharge treatment on a graphite phase carbon nitride catalyst. The sulfur species have high activity under a plasma state, so that compared with a conventional preparation method, graphite phase carbon nitride catalysts can be doped more easily. The sulfur doped graphite phase carbon nitride pholocatalyst provided by the invention has the advantages that the sulfur doped amount is adjustable, the specific area of a product catalyst is large, the visible light absorbability is strong, the electron-hole separation efficiency is high, and the photocatalysis performance is good. The catalyst prepared by the method provided by the invention is applied to a photocatalysis degradation process of a common pollutant namely 2,4,6-trichlorophenol (TCP) and a photocatalysis water decomposition hydrogen preparation process, the same evaluation device is adopted, and compared with the sulfur doped graphite phase carbon nitride pholocatalyst prepared by a conventional method, the sulfur doped graphite phase carbon nitride pholocatalyst provided by the invention shows more superior catalytic activity.

The invention relates to a method for preparing magnetic molecularly imprinted polymers (MIPs) through suspension polymerization, belonging to the technical field of preparation of environmental functional materials. In particular, in the method for preparing the magnetic MIPs through suspension polymerization, Fe3O4 magnetic particles are synthesized through a hydrothermal synthesis method, methacrylic acid is taken as a functional monomer, 2,4,6-trichlorophenol (2,4,6-TCP) is taken as template molecules, azodiisobutyronitrile is taken as an initiator, methylbenzene is taken as a pore-foaming agent, ethylene glycol dimethacrylate is taken as a crosslinking agent, and polyvinyl alcohol is taken as a stabilizing agent. The obtained MIPs are regular spheres, holes of specific shapes and sizes left by a plurality of template molecules are formed in the surfaces of the polymers, and specifically-arranged binding sites are arranged in the holes. By adopting the MIPs, highly-selective adsorption of a target pollutant, namely, 2,4,6-trichlorophenol can be realized.

The invention discloses a Pseudomonas aeruginosa strain TBPY, which is screened from tribromophenol(TBP)-polluted sludge and purified. The purified strain is domesticated by a pressure type domesticating method with gradually increased TBP concentration in an organic salt culture medium, and the domesticated strain can be used for the biological control of waste water containing persistent organic pollutants such as phenol, pyrocatechol, resorcinol, benzoic acid, p-hydroxybenzoic acid, vanillin, 4-chlorophenol, 2,4-dichlorophenol, trichlorophenol and tribromophenol and has high research and application values.

The invention provides a purpose of modified hydrotalcite based on dodecyl benzene sulfonate and lauryl sulfate, and particularly relates to an adsorbing agent used for adsorbing 2, 4, 6-trichlorophenol in a wastewater solution. According to modified hydrotalcite, with sodium dodecyl benzene sulfonate (SDBS) and sodium dodecyl sulfate (SDS) as a modifying agent, modified Zn2Al-LDHs is prepared and obtained by a co-precipitation method, the adsorbing agent has larger laminated plate spacing compared with the adsorbing agent before modification, and the hydrophilic surface becomes hydrophobic after modified. The adsorbing agent adsorbs 2, 4, 6-trichlorophenol and reaches adsorbing balance after 2-3 hours under the conditions that the pH value is 3-5 and the temperature is 25-35 DEG C; the adsorbing capacity reaches 100-160mg/g, and the adsorption rate reaches 70-83%. The adsorbing agent is applicable to 30-300mg/L wastewater solution containing 2, 4, 6-trichlorophenol and has the characteristics that the price is low, the adsorbing capacity is large and the adsorbing process is simple and convenient and is easy to operate and the like.

The invention relates to a preparation method of a beta-cyclodextrin/mesoporous attapulgite composite adsorbent and belongs to the technical field of environment function material preparation. According to the preparation method, attapulgite is used as a silicon-based raw material and cetyl trimethyl ammonium bromide is used as a template to prepare mesoporous attapulgite (mATP), and mesoporous attapulgite is modified by the use of beta-cyclodextrin (beta-CD) so as to synthesize the beta-CD/mATP composite material. The composite material can be applied in adsorption and separation of 2,4,6-trichlorophenol and 2,4,5-trichlorophenol in an aqueous solution. The product has an open pore structure which has advantages of narrow pore diameter distribution, high specific surface area and pore volume and the like. The product is widely used in fields of environment, chemical industry and the like.

The invention discloses a preparation method and application of a high-efficiency ultraviolet visible full-spectrum photocatalytic material and relates to a preparation method of a nano material which is doped with bromine and/or iodine and uses bismuth oxychloride as the matrix. The invention prepares the novel core-shell structured high-efficiency ultraviolet visible full-spectrum halogen-doped bismuth oxychloride photocatalytic material for the first time. The technical scheme is characterized in that the photocatalytic material has extremely high catalytic efficiency under the irradiation of a filament lamp, an iodine tungsten lamp, a daylight lamp and sunlight; the photocatalytic material has a wide catalytic degradation range and can carry out high-efficiency visible light catalytic decomposition on researched organic pollutants such as rhodamine B, methylene blue, methyl orange, 2,4,6-trichlorophenol, formaldehyde and the like; the degradation efficiency of the catalyst on the typical organic pollutant rhodamine B is up to 91% after the irradiation of sunlight for 10 minutes; the catalyst can be directly added to the paint to perform photo-absorption or degradation on formaldehyde and other harmful gases generated by interior finish and furniture; and the preparation method has the advantages of simple and convenient operation, energy saving and environment friendliness, thereby being applicable to large-scale industrial production.

The invention discloses an urchin-shaped carbon-covered ferroferric oxide material with functionalized hydroxyl groups and amino groups, and a preparation method thereof, relating to a nano-carbon material, i.e., an urchin-shaped carbon-covered ferroferric oxide material with functionalized hydroxyl groups and amino groups and a preparation method thereof are provided. The urchin-shaped carbon-covered ferroferric oxide material takes nano ferroferric oxide as an inner core; the surface of the inner core is covered with a layer of carbon coating; the surface of the carbon coating contains amino groups and hydroxyl groups; the surface of the carbon coating has urchin-shaped protuberances; and the carbon coating contains amorphous carbon and graphitized carbon. The preparation method comprises the steps: trichlorophenol and dicyclopentadienyl iron are dissolved in a polymer to form solution A; then, ammonia is added and dissolved in the solution A to form a solution B; the solution B is transferred to a reaction kettle for reaction; and finally, the reaction products are collected together and washed to obtain the urchin-shaped carbon-covered ferroferric oxide material with functionalized hydroxyl groups and amino groups.

The invention provides a preparation method of a quantum-dot phosphorescent imprinted polymer, belonging to the technical field of preparation of environment function materials. The preparation method comprises the following steps: first, synthesizing Mn-ZnS quantum dots by ZnSO4.7H2O, MnCl2.4H2O and Na2S.9H2O; then, adding (3-mercaptopropyl) trimethoxyl silane (MPTS) to modify to obtain the MPTS-modified Mn-ZnS quantum dots; and then, synthesizing a phosphorescent molecularly imprinted polymer with 2,4,5-trichlorophenol as template molecules by means of hydrolysis of tetraethoxysilane (TEOS) and optically detecting 2,4,5-trichlorophenol by the polymer. The phosphorescent molecularly imprinted polymer is good in optical and pH stability, and has the ability of selectively identifying 2,4,5-trichlorophenol.

The invention relates to a method for industrially producing disinfecting agent prochloraz, which is characterized by comprising the following steps: 2, 4, 6-trichlorophenol and dichloroethane taken as major raw materials directly react with propylamine after the 2, 4, 6- trichlorophenol and the dichloroethane are subjected to pressure condensation, are subjected to acyl chlorination through trichloromethyl carbonate, and react with imidazole to produce the prochloraz in the presence of triethylamine. Compared with the prior producing process, the method cancels intermediate washing, greatly reduces factory effluent, and improves product yield.

The invention discloses a nanofiber cellulose-based hydrogel loaded metal catalyst for degrading trichlorophenol in a water body and a preparation method of the catalyst. The preparation method comprises the following steps: (1)adding a nanofiber suspension, a polyvinyl alcohol solution and a carboxymethyl cellulose solution, performing water bath heating; (2) adding glacial acetic acid and a glutaraldehyde solution to perform reaction; (3) performing vacuuming treatment, centrifuging, performing freeze thawing circulation, slicing, and drying; (4) soaking in a salt solution containing Fe<2+>, and performing reaction; (5) soaking in a sodium borohydride solution, and performing reduction; (6) soaking in a potassium chloropalladate solution, and performing reaction; (7) washing with anaerobic water, and performing vacuum drying, so as to obtain the nanofiber cellulose-based hydrogel loaded metal catalyst. The hydrogel loaded metal catalyst disclosed by the invention has an efficient and thorough reduction and degradation property on trichlorophenol and chlorophenol compounds in wastewater, has very good adsorption on trichlorophenol, is capable of treating a relatively small amount of trichlorophenol in the water body, and has a very good effect.

The invention provides a preparation method for a ternary composite photocatalyst. The method comprises the following steps: slowly adding carbon spheres into an aqueous solution containing absolute ethanol, and performing stirring to obtain a dispersion liquid A; slowly adding tetrabutyl titanate into anhydrous ethanol, performing full stirring to obtain a dispersion liquid B; slowly adding the dispersion liquid B into the dispersion liquid A, and uniformly depositing a layer of reduction type TiO2-x on the surfaces of the carbon spheres through a solvothermal method to obtain a C@TiO2-x composite material; dispersing g-C3N4 into pure water to obtain a mixed liquid F; and dispersing the C@TiO2-x composite material into the mixed liquid F, and performing hydrothermal synthesis to obtain the ternary C@TiO2-x/g-C3N4 heterojunction material. According to the method provided by the invention, the ternary composite photocatalyst prepared by the method is a ternary heterojunction material, can be used for degrading medical wastewater such as 2,4,6-trichlorophenol under visible light and preparing hydrogen by photolysis of water, and has good photocatalytic performance.

The invention provides a preparation method of an electrochemical sensor for detecting 2,4,6-trichlorophenol. The preparation method comprises steps as follows: Cu-MOF-74 crystals are prepared from 2,5-dihydroxyterephthalic acid and copper nitrate trihydrate with a hydrothermal synthesis method; hemin is dissolved in a methanol aqueous solution, and a hemin stock solution is prepared; the Cu-MOF-74 crystals and the hemin stock solution are mixed, hemin and Cu-MOF-74 are subjected to coordination, hemin is immobilized on surface of Cu-MOF-74 and in pore channels, and a hemin/Cu-MOF-74 compositematerial is prepared; the hemin/Cu-MOF-74 composite material is dispersed in DMF, an electrode modification solution is prepared and dropwise applied to the surface of a polished glassy carbon electrode, then the glassy carbon electrode is put in a dryer and dried at room temperature, and the electrochemical sensor for detecting 2,4,6-trichlorophenol is obtained. The prepared hemin/Cu-MOF-74 electrochemical sensor has lower detection limit, can flexibly detect and measure 2,4,6-trichlorophenol in an actual sample, and is simple in technical operation, high in sensitivity and low in cost.

The invention provides a humic acid esterificaton and etherification modification based adsorption material and belongs to the technical field of environmental adsorption materials. The adsorption material is characterized in that esterified humic acid is prepared from humid acid, glycerinum and organic acid under the action of an acid catalyst, and the esterified and etherized humid acid adsorption material is prepared under the action of reduced ether. The invention further relates to the preparation method of the adsorption material. The adsorption rate of the etherified humic acid ester adsorption material on 2, 4, 6-trichlorophenol can reach more than 91%; meanwhile, the etherized humic acid ester adsorption material has preferential adsorption and good hydrophobic performance on organic chloride pollutants in media of water, soil and the like, the adsorption material can be separated from the soil and water by the aid of the hydrophobic property after the organic chloride pollutants are adsorbed, efficient separation and enrichment of the organic chloride pollutants and soil and high-efficiency recovery and the humic acid modified material are realized, and pollution to environment is lowered.

The invention belongs to the field of molecular imprinting detection, particularly relates to an electrochemical sensor for determining 2,4,6-trichlorophenol on the basis of the molecular imprinting technique as well as preparation and application of the electrochemical sensor, and aims to solve the problem that in the conventional electrochemical analysis technique for 2,4,6-trichlorophenol, specific recognition of the target object is poor because 2,4,6-trichlorophenol has similar oxidation potential with an analogue of 2,4,6-trichlorophenol. The prepared electrochemical sensor is based on the molecular imprinting technique and can be used for specifically recognizing 2,4,6-trichlorophenol. A carbon quantum dot-polymer composite film is adopted as an electrode modification material and is cheap and environmentally friendly; the sensor is simple to prepare, reaction conditions are mild, the process is easy to control, and the sensor has higher sensitivity for template molecules and has higher anti-interference performance and can be used for quantitative analysis of 2,4,6-trichlorophenol.

A method for a separating chloro phenol reaction solution comprises the specific steps of: enabling the chloro phenol reaction solution (the chloro phenol reaction solution is prepared by phenol and chlorine and comprises such all or part of the main components as phenol, o-chlorophenol, p-chlorophenol, 2,4-dichlorophenol, 2,6-dichlorophenol, 2,4,6-trichlorophenol and a small amount of tar) to continuously flow through a tower 1, a tower 2, a tower 3, a tower 4, a detar device (scraper film evaporator 6) and a tower 5, and controlling the temperatures of tower tops and tower bottoms of rectifying towers according to the different boiling points of the components of the reaction solution so as to separate the components from the tower tops. According to the method, the production capacity is large, the separation effect is excellent, the energy consumption is low, and the chloro phenol reaction solution is applicable to large-scale production.

The invention relates to a preparation method of a trichlorophenol blocked isocyanate prepolymer micelle. The invention provides a trichlorophenol blocked isocyanate prepolymer micelle which can be stable in a water solution for more than 3 months under the condition of high R value and can be subjected to unblocking reaction at low temperature (110 DEG C). The method comprises the following steps: 1. carrying out vacuum drying on polyethyleneglycol; 2. mixing and stirring the polyethyleneglycol, DMPA (dimethylolpropionic acid) and a composite solvent, introducing nitrogen, and keeping the temperature to react; 3. dropwisely adding HDI (hexamethylene diisocyanate) or TDI (toluene diisocyanate) to prepare the prepolymer; 4. blocking; 5. emulsifying; and 6. removing the solvent to obtain the trichlorophenol blocked isocyanate prepolymer micelle. The product provided by the invention can be used as an adhesive for artificial boards, a crosslinking agent or a single-component environment-friendly adhesive; and the product can be used in the fields of wood paints, leather coating agents, water-based adhesives and the like, and can also be used in the fields of enamel wires, textiles, leather, paper conditioning agents and the like.

The invention relates to a preparation method of a carbon-based magnetic temperature-sensitive surface imprinted adsorbent, belonging to the technical field of preparation of an environmental functional material. The preparation method comprises the following steps: preparing a ferroferric oxide/carbon (Fe3O4/C) magnetic composite material through a simple effective hydrothermal synthesis method; performing vinyl modification on the magnetic composite material; and preparing the magnetic carbon composite material surface temperature-sensitive imprinted adsorbent through a free-radical polymerization process, and using the adsorbent for selective recognition and separation of 2,4,5-trichlorophenol in a water solution. Due to the addition of a temperature-sensitive monomer, the material can realize controllable release under the acid-free conditions. The coating of the carbon layer ensures that the prepared imprinted adsorbent has remarkable magnetic stability under acidic conditions, and effectively prevents the aggregation phenomenon of ferric oxide. The material has high adsorption capacity, and obvious 2,4,5-trichlorophenol molecule recognition performance, magnetic separation and temperature-sensitive property.

The invention discloses a screening separation method of a bacterial strain for degradation of 2,4,6-trichlorophenol, and relates to the technical field of treatment of organic pollutants. The method comprises the steps: collecting activated sludge in a papermaking wastewater inner circulation anaerobic reactor, carrying out enrichment acclimation in a strictly anaerobic environment, then inoculating solid screening culture mediums having addition of 2,4,6-trichlorophenol respectively with the acclimated sludge according to the dilution gradient, and separating to obtain various purified bacterial strains having the ability to degrade 2,4,6-trichlorophenol; and finally, respectively inoculating degradation culture mediums having addition of 2,4,6-trichlorophenol with the various purified bacterial strains, and screening to obtain the bacterial strain having the highest degradation efficiency on 2,4,6-trichlorophenol. The method is simple, and the obtained spindle-shaped lysine bacillus has relatively high purity and high yield. The invention also provides the bacterial strain for degradation of 2,4,6-trichlorophenol; the bacterial strain can degrade chlorophenol organic matters through reductive dechlorination under anaerobic conditions, and has good degradation effect.

The invention relates to a method for preparing a magnetic/core-shell molecularly imprinted adsorbent employing miniemulsion polymerization, and belongs to the technical field of preparation of an environment function material. Particularly, the magnetic/core-shell molecularly imprinted adsorbent is prepared by adopting styrene and a methacrylic acid as monomers, 2,4,6-trichlorophenol (2,4,6-TCP) as a template molecule, divinyl benzene as a crosslinking agent, lauryl sodium sulfate as an emulsifier, and potassium peroxodisulfate as an initiator, and introducing bacillus subtilis as a template by adopting a miniemulsion polymerization method. The adsorbent can be applied to selective adsorption of the 2,4,6-trichlorophenol in a water environment. The static absorption experiment is used for researching adsorption equilibrium and thermodynamic property of the adsorbent. The result shows that the magnetic/core-shell molecularly imprinted adsorbent obtained by using the method has good selective adsorption ability.

The invention provides a 2, 4, 6-trichlorophenol molecular engram microsphere polymer. The invention also provides a method for preparing the 2, 4, 6-trichlorophenol molecular engram microsphere polymer. The invention also provides application of the 2, 4, 6-trichlorophenol molecular engram microsphere polymer in enriching and/or separating 2, 4, 6-trichlorophenol. The invention also provides the application of the 2, 4, 6-trichlorophenol molecular engram microsphere polymer in monitoring and/or processing the 2, 4, 6-trichlorophenol in an environmental water sample. The invention also provides a method for detecting and/or processing the 2, 4, 6-trichlorophenol in a sample through the 2, 4, 6-trichlorophenol molecular engram microsphere polymer. The polymer has simple and convenient preparation, an even grain size, a large specific surface area and pore volume, and high absorption selectivity. The polymer can be used for carrying out the experiment directly in the water environment without excessive other organic agents. The polymer is environmentally friendly and has a high absorption speed.

An accelerating agent used for printing and dyeing of linen and a using method thereof are disclosed. The accelerating agent comprises following raw materials by weight: 2 parts of rare earth elements, 2 parts of chitosan, 1 part of sodium chloride, 15 parts of 2,4,5-trichlorophenol, 5 parts of citric acid and 100 parts of water. The using method of the accelerating agent used for printing and dyeing of linen is also disclosed. The method includes 1) fully stirring the components by mass to prepare the accelerating agent; 2) dipping linen into the accelerating agent having a temperature of 90 DGE C for 30 min, and treating with microwave having power of 70 W as assistant; 3) dipping the linen obtained in the step 2) into a caustic soda solution having a temperature of 85 DEG C for 50 min; 4) dipping the linen obtained in the step 3) into an acetic acid solution having a temperature of 45 DEG C for 20 min; and 5) dipping the linen obtained in the step 4) into a sodium carbonate solution having a temperature of 80 DEG C for 35 min.

The invention discloses a separation method of an efficient chlorophenol degrading bacterial strain, and the efficient chlorophenol degrading bacterial strain Pseudomonassp.TB-1, with the collection number of CGMCCNo.9686. obtained through the separation method. The separation method comprises the following steps: obtaining anaerobic activated sludge from an internal-circulating anaerobic papermaking wastewater treatment reactor, domesticating and screening for a long time, and separating to obtain a bacterial strain for efficiently degrading 2, 4, 6-trichlorophenol through reductive dechlorination. The bacterial strain can completely degrade the 2, 4, 6-trichlorophenol with a concentration of 30mg/ L within 72 hours, and still has a degrading rate of 72% when the concentration of the 2, 4, 6-trichlorophenol (2, 4, 6-TCP) is as high as 150mg/ L.