19 results about "Trichlorophenol" patented technology

The invention discloses an application of an electronic waste pollution human body exposure fingerprint spectrum in exposure risk prediction, and the human body exposure fingerprint spectrum is composed of more than three of exposure markers of 2, 4, 6-tribromophenol, 2, 4, 5-trichlorophenol, 4-bromophenol, 1-hydroxypyrene and bisphenol A. The invention further discloses an application of the electronic waste pollution human body exposure fingerprint spectrum in exposure risk prediction. According to the method, a systematic method of urine pollutant exposure omics is adopted for the first time, comprehensive screening and characterization of pollutant exposure markers related to specific components and by-products are achieved in electronic waste exposure worker groups, and the method is the most systematic organic pollutant exposure research known in the field at present.

The invention discloses a preparation method and application of a nano zero-valent iron-zeolite core-shell structure composite material, and relates to the technical field of nano zero-valent iron composite material preparation. A layer of zeolite core-shell structure is generated on the surface of the nano zero-valent iron to prevent iron oxide from being generated on the surface of nZVI to reduce the reaction activity, and meanwhile, the mass ratio of zeolite / zero-valent iron strongly affects gradual release of Fe < 2 + > in the nano zero-valent iron-zeolite core-shell structure composite material, so that iron core oxidation is slowed down, and the reaction activity of nZVI is improved. The release speed of electrons is also slowed down, the gradually released electrons form a long-time and stable activation effect on persulfate, and the degradation of trichlorophenol can be promoted. According to the preparation method and application of the nano zero-valent iron-zeolite core-shell structure composite material, the nano zero-valent iron-zeolite core-shell structure composite material can be obtained.

This invention discloses the application of human exposure fingerprinting of electronic waste pollution in exposure risk prediction. The human exposure fingerprinting consists of three or more of the following exposure markers: 2,4,6-tribromophenol, 2,4,5-trichlorophenol, 4-bromophenol, 1-hydroxypyrene, and bisphenol A. This invention is the first to employ the systematic method of urinary contaminant exposure profiling to achieve comprehensive screening and characterization of contaminant exposure markers related to specific components and byproducts in workers exposed to electronic waste. This is currently the most systematic organic contaminant exposure study known in this field.

The invention belongs to the field of environmental functional materials, particularly relates to an efficient catalyst based on industrial solid waste recycling, and provides an iron-nitrogen co-doped biochar catalyst based on papermaking sludge recycling and a preparation method thereof.The preparation method comprises the two steps that 1, after blended sludge and composite ferric salt ML are subjected to ultrasonic blending in water, a hydrothermal reaction is completed, and an iron-nitrogen co-doped biochar catalyst is obtained; carrying out post-treatment to construct a carbonaceous precursor; and (2) calcining and pyrolyzing the carbonaceous precursor and a nitrogen source in an inert atmosphere to obtain the iron-nitrogen co-doped sludge-based biochar catalyst. According to the method disclosed by the invention, the dual goal of treating pollution by waste is achieved, and experimental results show that the prepared biochar has a high specific surface area and a rich pore structure, and can be used for quickly and efficiently activating PMS, generating persistent free radicals and quickly degrading residual pollutant trichlorophenol (TCP) in a water body.

The present invention discloses a method for dechlorinating and removing trichlorophenol in wastewater containing nitrate, and the method is carried out as follows: adding methanol to wastewater containing trichlorophenol and nitrate, adjusting the pH to 9-12, and irradiating the wastewater with a medium-pressure ultraviolet lamp under stirring to achieve dechlorination and removal of trichlorophenol. The method of the present invention only requires adding relatively economical methanol to the trichlorophenol wastewater containing nitrate and irradiating it with ultraviolet light, and the reaction system is simple and easy to operate. Different from the oxidative deep treatment technology of advanced oxidation, which requires adjusting the pH to a strongly acidic state, the system has a good dechlorination effect under weakly alkaline and alkaline conditions, thereby reducing costs. The present invention utilizes NO3 widely present in sewage. ‑ As one of the system components, it saves reagent costs and does not produce toxic or harmful byproducts. The present invention can be applied to the deep treatment of trichlorophenol in wastewater containing nitrate.

The invention discloses a modified plastic film with an antistatic function and a preparation method of the modified plastic film, and relates to the technical field of plastic films. Wherein the plastic matrix is prepared from the following components in parts by weight: 42 to 48 parts of resin, 25 to 32 parts of polyaryl phosphate, 15 to 18 parts of low-density polyethylene, 12 to 16 parts of alumina-based spinel, 7 to 9 parts of carbon nanotubes, 6 to 8 parts of trichlorophenol methane, 5 to 7 parts of hexamethylene diisocyanate, 1 to 2 parts of zinc borate, 0.5 to 1 part of impact-resistant modifier, 0.2 to 0.5 part of cross-linking agent and 0.5 to 1 part of conductive active component. According to the invention, the vapor phase sedimentation layer forms a conductive metal coating on the surface of a high polymer material through a coating type antistatic film and a composite antistatic film which are produced by an evaporation technology, and the mounting ring is of a wedge-shaped structure which is concave downwards and inwards, so that structural protection of corners of the coating of the vapor phase sedimentation layer is realized; and the structural stability of the gas-phase sedimentation layer is improved.

The invention discloses a preparation method and application of a carbon-based nanoscale zero-valent iron material capable of being used for microwave activation and degradation of organic pollutants, and relates to the technical field of carbon-based nanoscale zero-valent iron preparation. The invention aims to solve the problems that a traditional carbon-based metal organic framework is unstable, and incompletely decomposed toxic by-products are released into water in an adsorption process, so that secondary organic pollution is caused. The method comprises the following steps: adding nitrogen-doped biochar into a ferric chloride solution, uniformly stirring in a nitrogen atmosphere, adding a sodium borohydride aqueous solution, fully stirring, filtering, washing in the nitrogen atmosphere, and finally drying by a freeze dryer to obtain the carbon-based nano zero-valent iron material for degrading organic pollutants under microwave activation. The organic pollutants comprise but are not limited to sulfamethoxazole, bisphenol A, 4-chlorophenol and trichlorophenol. The invention can obtain the preparation method and the application of the carbon-based nano zero-valent iron material capable of being used for microwave activation and degradation of organic pollutants.

The invention provides a method for resource utilization of 2, 4-dichlorophenol rectification residual liquid, and belongs to the technical field of chemical production waste treatment. According to the method, the 2, 4-dichlorophenol rectification residual liquid is used as a raw material, and the 2, 4, 6-trichlorophenol component and the phenyl sulfide catalyst are effectively separated from the 2, 4-dichlorophenol rectification residual liquid through sectional distillation operation and optimization of distillation conditions, the cyclic utilization proportion of the phenyl sulfide catalyst and the use amount of a Lewis acid catalyst, so that the 2, 4, 6-trichlorophenol and the phenyl sulfide catalyst are effectively separated from the 2, 4-dichlorophenol rectification residual liquid. According to the method, the content of 2, 4-dichlorophenol in the chlorinated liquid obtained by efficiently recycling the 2, 4, 6-trichlorophenol component and recycling the polyphenylene sulfide catalyst is greater than 96%. According to the method, the production efficiency is improved, the 2, 4-dichlorophenol rectification residual liquid needing to be treated is reduced, and the production cost is remarkably reduced; the method is simple to operate and easy to implement, avoids complex operation steps in an existing recovery method, effectively solves the problems of high cost and poor adaptability of a traditional process, and provides powerful support for large-scale industrial production and application.

The invention discloses a preparation method of a high-crystallinity Sb2S3 antimony sulfide film, which not only can be applied to a PEC photocathode, but also can be applied to the fields of solar cells, photoelectric detection and the like. According to the method, 2, 4, 6-trichlorophenol is used as an additive and dissolved in acetone together with antimony trichloride, and the high-quality Sb2S3 antimony sulfide thin film is obtained through chemical bath deposition. According to the method, the Sb2S3 precursor and the acetone solvent serve as raw materials, the interaction between Cl atoms and Sb atoms at the tail ends of 2, 4, 6-trichlorophenol molecules is utilized, the intermolecular interaction between the Sb2S3 precursor and the acetone solvent can be enhanced through the interaction, the number of Sb2S3 crystal nucleuses is reduced along with reduction of the supersaturation degree, and growth of the crystal nucleuses is further promoted. And the crystallization peak intensity is enhanced from 150 to 500. Meanwhile, the Fermi level of semiconductor antimony sulfide is reduced, P-type conductivity is enhanced, and therefore the performance of the antimony sulfide photoelectric cathode is improved.

The invention discloses a Cu-Ce [gamma]-Al2O3 (111) particle electrode and application of the Cu-Ce [gamma]-Al2O3 (111) particle electrode in degradation of 2, 4, 5-trichlorophenol wastewater, triethyl aluminum is taken as a raw material, polyvinylpyrrolidone is taken as a template agent, EDTA (ethylene diamine tetraacetic acid) is taken as a structural auxiliary agent, and a solvothermal method is adopted to prepare exposed (111) crystal face [gamma]-Al2O3; and then loading cerium and copper on the exposed (111) crystal face gamma-Al2O3 by adopting a multi-time impregnation method to obtain the Cu-Ce (at) gamma-Al2O3 (111) particle electrode. The Cu-Ce-at-gamma-Al2O3 (111) particle electrode is filled between the main cathode and the anode to realize a three-dimensional electrocatalytic oxidation reaction, the Cu-Ce-at-gamma-Al2O3 (111) particle electrode shows excellent electrochemical performance when applied to electrochemical degradation of 2, 4, 5-trichlorophenol wastewater, and the removal rate of the Cu-Ce-at-gamma-Al2O3 (111) particle electrode to the 2, 4, 5-trichlorophenol reaches 98.4%. The electrode has great application potential as an efficient electrochemical wastewater treatment method.

The application discloses a method for analyzing multiple halogenated phenols based on hydrogen bond enhanced halogen bond recognition, which mainly comprises the following steps: constructing a selective recognition surface enhanced Raman substrate, selectively capturing target molecules, collecting signals and extracting chemical characteristics, embedding physical / chemical prior knowledge into machine learning multi-component decoupling, and the like. The application overcomes the interference of complex matrix in water, realizes selective capture, breaks through the black box limitation of traditional pure data driven model, constructs a physical information guided machine learning model, and realizes the detection of multiple halogenated phenols. The application can be used for selectively capturing halogenated phenol persistent organic pollutants (such as trichlorophenol, tribromophenol, tetrabromobisphenol A and the like) in a water phase environment containing background inorganic salt or non-halogenated aromatic organic matter interference, and realizes the qualitative screening of target pollutants in combination with a surface enhanced Raman spectroscopy technology.

The invention discloses a method and device for preparing prochloraz using microfluidic reaction technology, and the preparation method comprises the following steps: 2,4,6-trichlorophenol is dissolved with liquid caustic soda and an excess of 1,2-dichloroethane is pumped into a microfluidic reactor to react to obtain 2,4,6-trichlorophenoxyethyl chloride, and then ammoniated with n-propylamine in a microchannel reactor after liquid separation distillation and refining to obtain N-(2,4,6-trichlorophenoxyethyl) propylamine, and in the presence of triethylamine, a microfluidic dynamic reactor is used to generate acyl chloride with triphosgene and then react with imidazole to obtain the final product prochloraz. Wherein, the reaction pipeline of the microfluidic tubular reactor contains novel internal components, and a novel microfluidic dynamic reactor is used. In the preparation method of prochloraz of the present invention, microfluidic technology is used and a new microfluidic device is matched, with high yield, few by-products, short reaction time, small equipment footprint, safety and energy saving, etc., and it is suitable for large-scale industrial production.

The application relates to a device for continuously extracting and recovering trichlorophenol from prochloraz, and relates to the technical field of trichlorophenol, which comprises a hydrochloric acid tank, an alkaline wastewater tank, a dichloroethane tank, a first mixer, a first continuous extractor, an acid washing water layer tank, an acid washing oil layer tank, a liquid alkali tank, a second mixer, a second continuous extractor, an alkali washing oil layer tank and an alkali washing water layer tank, the hydrochloric acid tank, the alkaline wastewater tank and the dichloroethane tank are connected with the first mixer through pipes, and the first mixer is connected with the first continuous extractor through a pipe, the complete connection system of the hydrochloric acid tank, the alkaline wastewater tank, the dichloroethane tank, two-stage mixers, two-stage continuous extractors and multiple layering tanks realizes a continuous extraction and recovery process of trichlorophenol in prochloraz amination wastewater, the structure does not need to set a solid-liquid separation link, the process steps are simplified, and meanwhile, the processing capacity is improved through a closed continuous operation design.

The invention relates to a preparation method of 2, 4, 6-trichlorophenol, which comprises the following steps: taking phenol as a raw material, taking tetrachloroethylene and water according to a certain ratio as a directional catalyst and an inhibitor, chlorinating to generate a crude product of 2, 4, 6-trichlorophenol, and separating and purifying through a rectifying tower to obtain a target product. Tetrachloroethylene and water serve as catalysts and have a positioning function, the problem of flash points is avoided, the safety in the preparation process is high, the conversion rate of 2, 4, 6-trichlorophenol is improved, meanwhile, generation of 2, 3, 6-trichlorophenol, 2, 4, 5-trichlorophenol and other parachlorophenols generated by side reactions is inhibited, and the total yield of 2, 4, 6-trichlorophenol is 98% or above. The purity of 2, 4, 6-trichlorophenol obtained after purification through the rectifying tower is 99.5% or above, and 2, 3, 6 / 2, 5, 6-trichlorophenol is smaller than or equal to 0.1%, so that market requirements can be met.

The present invention provides a novel trichlorophenol degrading enzyme, the amino acid sequence of which is shown in any one of SEQ ID NO.2~SEQ ID NO.5. The present invention also provides the application of the novel trichlorophenol degrading enzyme in degrading trichlorophenol and repairing trichlorophenol-contaminated environments, as well as a method for degrading trichlorophenol or repairing trichlorophenol-contaminated environments. The present invention uses the AlphaFold2 artificial intelligence model to construct the three-dimensional structure of the degradation enzyme TcpA, and analyzes its structure, and finally combines the mutation technology to screen out Tyr490His, Tyr490Arg, Ala494Ile, Ala494Ile-Tyr490Arg mutant enzymes with better degradation effects; the optimized mutant enzyme of the present invention can efficiently and quickly degrade trichlorophenol, and can also be used to repair natural environments such as water bodies contaminated by trichlorophenol, and efficiently and quickly remove the residual amount of such pesticides in water bodies.

The application discloses a kind of high-density buffer sponges and preparation methods thereof, belong to the technical field of polymer materials.Aiming at the problems of poor moisture resistance, easy mildew, serious mechanical property attenuation under humid environment and other problems of existing high-density buffer sponges, the sponge uses polyether polyol and isocyanate as basic raw materials, adds KH-570 modified nano-silica as a moisture-proof modifier, the mildew-resistant agent compounded by artemisia extract, mint extract and 2,4,6-trichlorophenol, and carbon fiber powder reinforcing agent, and is prepared through the steps of raw material pretreatment, component preparation, foaming mixing, injection molding foaming, curing and post-processing.The sponge has excellent moisture resistance, long-term mildew resistance and stable cushioning mechanical properties, is environmentally friendly and non-toxic, has simple preparation process, does not require special equipment, is suitable for industrial large-scale production, and is suitable for sofas, pillows, mattresses and other furniture, especially for humid environment.

This invention discloses a highly efficient bacterium with a metabolic preference for chlorophenol pollutants and its applications, belonging to the field of microbial technology. Through long-term domestication and screening of activated sludge, a bacterium was isolated that efficiently degrades chlorophenols and exhibits preferential and efficient degradation ability for 2,4,6-trichlorophenol. This bacterium is classified and named... Cupriavidus sp. RT8. This bacterium overcomes the limitation of existing strains having a narrow degradation spectrum, and can simultaneously and efficiently degrade multiple chlorophenol compounds such as monochlorophenol, dichlorophenol, and trichlorophenol. It also overcomes the "carbon metabolite inhibition" effect, and can still maintain high efficiency in degrading chlorophenols under conditions where an additional carbon source is readily available. It has high adaptability and treatment efficiency in real polluted environments, and promotes the practical engineering application of microbial remediation technology.

This invention discloses a highly efficient bacterium with a metabolic preference for chlorophenol pollutants and its applications, belonging to the field of microbial technology. Through long-term domestication and screening of activated sludge, a bacterium was isolated that efficiently degrades chlorophenols and exhibits preferential and efficient degradation ability for 2,4,6-trichlorophenol. This bacterium is classified and named... Cupriavidus sp. RT8. This bacterium overcomes the limitation of existing strains having a narrow degradation spectrum, and can simultaneously and efficiently degrade multiple chlorophenol compounds such as monochlorophenol, dichlorophenol, and trichlorophenol. It also overcomes the "carbon metabolite inhibition" effect, and can still maintain high efficiency in degrading chlorophenols under conditions where an additional carbon source is readily available. It has high adaptability and treatment efficiency in real polluted environments, and promotes the practical engineering application of microbial remediation technology.

The present invention relates to a rapid domestication device and method for 2,4,6-trichlorophenol-degrading functional bacteria. The present invention is applicable to the technical field of wastewater biological treatment. The technical problem to be solved by the present invention is: to provide a rapid domestication device and method for 2,4,6-trichlorophenol-degrading functional bacteria. The technical solution adopted by the present invention is: a rapid domestication system for 2,4,6-trichlorophenol-degrading functional bacteria, characterized in that it includes: a chlorophenol inlet water tank; an aeration tank having a closed chamber; a stripping gas collection tank connected to the aeration tank through a gas transmission pipe; an upflow chlorophenol degradation reactor, which is vertically separated into a plurality of reaction chambers by a plurality of microfiltration membranes capable of retaining bacteria; a reflux pipe connecting the overflow tank and the aeration tank, and a reflux pump is equipped thereon; an outlet water tank connected to the overflow tank through a drain pipe; a control unit, which is electrically connected to the water supply pump, the water transmission pump, the reflux pump, and an aeration device and a dissolved oxygen detector installed in the aeration tank.