47 results about "Potassium persulfate" patented technology

The application relates to a sensor for synchronously detecting enniatin and roquefortine based on a double-potential electrochemiluminescence immunoassay technology as well as a preparation method and a detection method thereof. The sensor comprises a base electrode, a sensing interface composed of a nanocomposite is modified on the surface of the base electrode, mixed coated antigens including ENNs-BSA and AOH-BSA fixed on the sensing interface, mixed probes including a cathode probe and an anode probe, the cathode probe is Zr-Por-MOF-ENNs Ab which is obtained by marking ENNs antibodies with a porphyrin zirconium metal organic framework, the anode probe is Ce-In-MOF@ABEI-AOH Ab which is obtained by marking AOH antibodies with ABEI loaded on a cerium-doped indium metal organic framework, and a detection solution containing a single co-reactant potassium persulfate. The application can realize one-time sample adding, double-potential scanning and synchronous quantification for two kinds of mycotoxins of enniatin and roquefortine.

This invention relates to a method for preparing a broadband absorption hydrogel. The method comprises the following steps: S1, mixing solvent A (N,N-dimethylformamide or acetonitrile) with deionized water to obtain a mixed solvent; S2, adding polyethylene glycol methyl ether acrylate-480 and acryloylmorpholine to the solvent in S1 and dissolving them to obtain a mixed solution; S3, removing dissolved oxygen from the mixed solution in S2, sealing the container, and stirring under ice bath conditions; S4, adding potassium persulfate and N,N,N',N'-tetramethylethylenediamine to the mixed solution after stirring in S3, and sealing the container again; S5, completing the polymerization reaction in the container at 60 °C to obtain the hydrogel. Compared with the prior art, the hydrogel material provided by this invention has improved reflection loss intensity and effective absorption bandwidth performance, thus providing a new perspective for developing highly flexible and efficient electromagnetic wave absorbers.

This invention belongs to the field of complex pollutant removal technology in water bodies, and specifically relates to a microbial composite hydrogel, its preparation method, and its application. The microbial composite hydrogel, by weight, comprises: 1-3 parts polyvinyl alcohol, 3-8 parts polyethylene glycol, 2-6 parts sodium alginate, 0.05-0.08 parts nano-titanium dioxide, 10-25 parts CaCl2, 10-25 parts boric acid, 5-15 parts potassium persulfate, and *Bacillus velezensis*, wherein the concentration of *Bacillus velezensis* is 0.35 × 10⁻⁶. 8 -0.6*10 8 Cells / mL. The microbial composite hydrogel of this invention can effectively treat multiple pollutants in wastewater simultaneously, has a more efficient pollutant degradation capacity and a wider range of applications, and realizes comprehensive integrated treatment of food wastewater.

The application discloses a preparation method of organic garbage carbon source by composite enzyme combined with nitrogen precipitation. Firstly, enzyme pretreatment is performed on organic garbage materials, starch enzyme, cellulase and hemicellulase are used in cooperation to make macromolecular structure of organic matter be broken, so that preliminary release and partial dissolution of carbon source substances are realized; subsequently, sodium tetraphenylborate is added in the pretreatment system to selectively precipitate nitrogen substances in the solution, and centrifugal separation is performed to reduce nitrogen content of the system; on the basis, potassium persulfate and iron substances are added into the obtained suspension liquid to build a Fenton-like reaction system, residual organic macromolecules are further oxidized and degraded, and the structure is optimized, so that availability and stability of the carbon source are improved. In the whole process, each link cooperates, so that the organic garbage can be efficiently converted into high-quality carbon source with high C / N ratio and COD value, and can be used in a sewage treatment system as stable external carbon source.

The application relates to the technical field of soil chemical analysis, and discloses a multi-component grading detection method and a detection system for phosphorus in soil, which comprises the following steps: placing a soil sample in a centrifugal tube, and sequentially completing continuous extraction of at least two levels of different extractants without sample transfer in the whole process; after extraction, using a quantitative nondestructive transfer kit to transfer soil residues to a digestion container; adopting a two-step digestion procedure of low-temperature pre-digestion and high-temperature complete digestion to digest the soil residues; and using potassium persulfate solution to rapidly digest part of the extractant containing organic phosphorus; the application also provides a detection system for realizing the method, which comprises an extraction module, an organic phosphorus processing module, a residue phosphorus processing module and a detection module. The application completes multi-step extraction in a single container and optimizes key digestion steps, effectively solves the inaccuracy problem caused by sample transfer loss in the prior art, and significantly improves operation safety and analysis efficiency.

This invention belongs to the field of packaging and printing materials, specifically relating to a high-temperature resistant water-based micro-crosslinked transfer coating. The raw materials for this high-temperature resistant water-based micro-crosslinked transfer coating consist of the following components: methacrylic acid, N-hydroxymethylacrylamide, butyl acrylate, methyl methacrylate, diallyl phthalate, 1,6-hexanediol diacrylate, tricyclodecanedimethylol diacrylate, trimethylolpropane triacrylate, di(trimethylolpropane)tetraacrylate, potassium persulfate, sodium bicarbonate, alkylphenol polyoxyethylene ether ammonium sulfate, nonylphenol polyoxyethylene ether, deionized water, ethanol, ammonia, wetting agent, defoamer, and film-forming agent. Its beneficial effects include a stable reaction process during the preparation of this high-temperature resistant water-based micro-crosslinked transfer coating, reducing the likelihood of slag formation or explosive polymerization; high gloss in the coating film; good adhesion to vacuum metallization; minimal fogging or whitening; high-temperature molding resistance up to 180℃; and easy peeling of PET film with a high yield.

The application relates to a preparation method of high-concentration lithium tetrafluoroborate concentrate, and belongs to the technical field of lithium ion battery electrolyte. Fluoroboric acid solution and lithium carbonate are added into a reaction kettle, stirred and reacted to obtain lithium tetrafluoroborate crude solution; barium chloride solution is first added into the lithium tetrafluoroborate crude solution, stirred and filtered to remove barium sulfate precipitate; cation exchange resin, active alumina and modified adsorption auxiliary agent are further added into the filtrate, filtered to obtain refined lithium tetrafluoroborate solution; the refined lithium tetrafluoroborate solution is vacuum concentrated, filtered through a polytetrafluoroethylene filter membrane, and high-concentration lithium tetrafluoroborate concentrate is obtained; the modified adsorption auxiliary agent is prepared by 13X molecular sieve, isopropyl alcohol, deionized water, dimethyl diallyl ammonium chloride, indole-3-acrylic acid and potassium persulfate; the application can effectively improve the mass concentration of the lithium tetrafluoroborate concentrate, reduce the content of impurity ions, and the solution is clear and stable after being stored for 6 months at room temperature in a sealed state without stratification and precipitation.

This invention provides a novel powder and method for its use for the extraction and complexation of gold from sources containing this metal. The powder comprises an optimized combination of borax, sodium bicarbonate, and glycine as a triple buffer system, iodide ion as a leaching agent, a complementary combination of potassium persulfate and potassium monopersulfate (Oxone®) as an oxidant, and a copper salt as a catalyst for the oxidation-reduction cycle. In the proposed method, the powder is contacted with a solid gold-containing feed under mild alkaline conditions and ambient temperature to form a stable iodide-gold complex. This complex can be recovered to pure metallic gold through chemical or electrochemical reduction, and the leaching solution can be reused after recovery without loss of yield.

The present application belongs to the technical field of packaging materials. More particularly, it relates to a PVA adhesive tape adhesive and a preparation method thereof. The specific preparation steps of the present application include: after guar gum and water are mixed and swelled according to a mass ratio of 1:15-20, 0.3-0.5% of endo-beta-glucanase of the mass of the guar gum is added, under the conditions of pH 5.0-5.2, temperature 48-52 DEG C, ultrasonic frequency 50-60 kHz, ultrasonic enzymolysis reaction for 30-45 min, enzyme inactivation by heating, cooling, and then activated plant gum solution is obtained; after the PVA solution and the activated plant gum solution are stirred and mixed uniformly, a thickening agent solution is added, and after continued stirring and uniform mixing, a composite modifier and potassium persulfate are added, under the condition of temperature 40-45 DEG C, incubation and maturation reaction for 2-4 h, aging for 24-36 h, and then discharging, a mixed glue solution is obtained; after the mixed glue solution is coated and dried, a PVA adhesive tape adhesive is obtained.

The application discloses a flocculant for papermaking wastewater treatment and a preparation method thereof, and relates to the technical field of papermaking wastewater treatment and prevention agents. The method comprises the following steps: sequentially performing alkalization, quaternary ammonium and free radical graft copolymerization modification on chitosan to construct a high-molecular skeleton with strong cationic and comb structure; then introducing tannic acid for interface coordination pre-anchoring, and combining formic acid as a defect inducer to in-situ grow a zirconium-based MOF shell layer with a mesoporous structure on the surface of the graft copolymer to form an organic-inorganic composite carrier; finally, anhydrous ferrous sulfate is loaded by dry mixing, and the final product is independently packaged with potassium persulfate and polyaluminum ferric chloride respectively. The flocculant prepared by the application has the functions of strong electric neutralization, efficient adsorption bridging and in-situ catalytic oxidation, has a deep removal effect on COD in papermaking wastewater, especially on refractory organic matter, and has good product stability, and is convenient to store and use.

The application discloses a preparation method of a chaenomeles fruit bio-fertilizer additive, which comprises the following steps: collecting chaenomeles fruit seeds, adding water to the chaenomeles fruit seeds to stir and extract, and concentrating to obtain a concentrated solution containing chaenomeles fruit seed gum, and then crushing the chaenomeles fruit seeds to obtain chaenomeles fruit seed powder; taking chaenomeles fruit residues, crushing the chaenomeles fruit residues, mixing the crushed chaenomeles fruit residues with citric acid, the chaenomeles fruit seed powder and water, filtering, mixing the filtered mixture with water and a compound microbial agent to ferment, and continuously fermenting the mixture to obtain a primary fermentation product; taking the concentrated solution, mixing the concentrated solution with biochar, chitosan and potassium persulfate to react, adding the secondary fermentation product to the mixture to stir and mix to obtain a mixture, and then sending the mixture to a granulator to granulate to obtain the chaenomeles fruit bio-fertilizer additive. The application fully utilizes the waste, such as peels, fermentation residues, rotten fruits and chaenomeles fruit seeds, generated in the processing of chaenomeles fruits to produce the high-quality chaenomeles fruit bio-fertilizer additive, and solves the problem of poor utilization effect of the existing chaenomeles fruit waste.

The application discloses a kind of polymeric quaternary phosphonium salt fungicides and its preparation method and application the method includes steps: S1, 3, 5-dihydroxyacetophenone, water, organic acid, organic phosphine reaction obtains intermediate product A;S2, brown intermediate product A is reacted in alcohol and halogenated hydrocarbon, and brown viscous product is obtained;S3, brown viscous product is dissolved in ester solvent, filtration is carried out, and the polymeric quaternary phosphonium salt fungicide monomer separated in filtrate is taken;S4, polymeric quaternary phosphonium salt fungicide monomer is added in water, and aqueous solution of potassium persulfate, aqueous solution of sodium bisulfite are sequentially added dropwise, and viscous liquid is obtained;S5, viscous liquid is filtered to obtain light yellow solid, and the light yellow solid is placed in oven and dried overnight, and polymeric quaternary phosphonium salt fungicide is obtained.The polymeric quaternary phosphonium salt fungicide of the application has killing effect on SRB, TGB and IB in oil-containing sewage, and has the advantages of low use concentration and high sterilization efficiency.

The application relates to a preparation method and application of a 2-acyl benzothiazole compound, which comprises the following steps: placing sulfur ylide in a sealed tube, adding a solvent to dissolve, and obtaining a first reaction system; adding nitrosobenzene into the first reaction system, stirring at a certain temperature for a certain time, and obtaining a second reaction system; adding sodium hydrosulfide, dimethyl sulfoxide, a metal salt, potassium persulfate and an alkali into the second reaction system, heating and stirring in the sealed tube to react, and obtaining a third reaction system; and carrying out post-treatment on the third reaction system to obtain the 2-acyl benzothiazole compound.The application has the advantages that the reaction condition is mild, the price of the sodium hydrosulfide sulfur source is low, and the reaction yield is high; the substrate applicability range is wide, various substrate structures can tolerate the reaction condition, and the 2-acyl benzothiazole derivative with diversified structures can be rapidly prepared.

This invention discloses a method for preparing polystyrene-loaded activated carbon fibers. Using styrene and acrylic acid as raw materials, potassium persulfate (KPS) as an initiator, polyvinylpyrrolidone (PVP) as a binder, and activated carbon fibers (ACF) as the load, an in-situ loading method is employed. The specific steps are as follows: (1) The ACF is thoroughly rinsed with deionized water to remove surface impurities and then dried; (2) A measured amount of styrene and acrylic acid are slowly added dropwise to a bottom solution (PVP, sodium bicarbonate, and water) under a nitrogen atmosphere at room temperature, while a KPS aqueous solution is injected at a certain rate. After the addition is complete, the reaction is continued with stirring. After filtration, a polystyrene emulsion is obtained; (3) The obtained emulsion is used to impregnate the activated carbon fibers. After thorough impregnation, the fibers are dried to obtain polystyrene-loaded activated carbon fibers. The activated carbon fiber material prepared by this method is low in cost, simple in process, and has good adsorption effect, and can be used to improve the impurity removal effect of acesulfame potassium water.

This invention discloses a method using arylmethyl ketones and 2-aryl- N This invention relates to a method for synthesizing dihydropyrrole derivatives using toluenesulfonylaziridine as a starting material, belonging to the field of organic synthetic chemistry. The method uses tris(dibenzylacetone)dipalladium (Pd2(dba)3) as a catalyst, and 2-iodobenzoic acid (IBX) and potassium persulfate (K2S2O8) as co-oxidants. N,N Using dimethylformamide (DMF) as both solvent and carbon source, the reaction is carried out in an oil bath at 100℃–120℃ for 15–24 h, followed by post-treatment to obtain dihydropyrrole derivatives. This invention utilizes readily available raw materials, is simple to operate, employs mild reaction conditions, exhibits broad functional group compatibility, provides high product selectivity, and is environmentally friendly. Yields can reach 51%–90%, making it suitable for large-scale preparation of structurally diverse dihydropyrrole derivatives. It has significant application value in drug development, natural product synthesis, and materials chemistry.

The application belongs to the technical field of oil field chemical additives, and provides a fluid loss additive for oil well cement and a preparation method thereof.The fluid loss additive for oil well cement comprises raw materials, i.e., a high molecular polymer, a composite hydration agent, an additive, deionized water and potassium persulfate; the high molecular polymer is formed by graft polymerization of sulfonated polyether sulfone, acrylonitrile, hydroxyethyl methacrylate and sodium allyl sulfonate monomers; and the composite hydration agent is formed by compounding and cross-linking of TPEG-2400, silica ash, metakaolin and polyethylene glycol diacrylate.The preparation method comprises the following steps: mixing the above raw materials, and obtaining the fluid loss additive after constant temperature stirring reaction.The fluid loss additive for oil well cement can utilize the synergistic effect among raw materials, improve the temperature resistance and salt resistance of the fluid loss additive, the fluid loss performance and the cement stone strength, and has the advantages of simple preparation process, easily obtained raw materials, controllable cost, suitability for industrialized scale-up production, adaptability to cementing operation in deep well, ultra-deep well and high salinity environment, etc.

This invention discloses a water-saving foam washing agent for cotton fabrics. The foam washing agent comprises, by mass percentage, one or more of a polyoxyethylene ether compound, sodium dodecyl sulfate, or sodium dodecylbenzene sulfonate, accounting for 0.1-3%; potassium persulfate, accounting for 0.1-2%; and the balance being water. A treatment process using this water-saving foam washing agent for cotton fabrics includes dyeing the cotton fabric with reactive dyes, spraying the fabric with the foam washing agent, and steaming. The advantages of this invention lie in its ability to effectively reduce water consumption during the washing process, achieving water conservation, and addressing the generation of colored wastewater at its source, thus greatly assisting in the treatment of subsequent dyeing wastewater.

The application discloses a synthesis method of 4-trifluoroethyl-2-quinozolinone compound and belongs to the field of organic chemistry. The method can quickly realize one-pot synthesis of 4-trifluoroethyl-2-quinozolinone compound under blue light irradiation by using a novel trifluoromethyl copper complex, an ortho alkenyl aryl urea compound, potassium carbonate and potassium persulfate as reactants. The method has wide substrate applicability, simple raw materials and low economic cost. In addition, the method realizes synthesis of the target product, does not need to add a catalyst for catalysis, and can obtain the target product in a good yield only by reacting for 12 hours. The target compound has wide application in the fields of medicines, pesticides and the like.

The application relates to the field of industrial waste gas treatment, and discloses a kind of ultrasonic atomization wet removal industrial flue gas NO x Process with SO2: S1, industrial flue gas cooling and dust removal; S2, using first washing liquid and second washing liquid to oxidize and wash NO respectively; S3, using ultrasonic atomization absorption liquid to oxidize NO of industrial flue gas x Absorption with SO2; S4, industrial flue gas demisting treatment; the first washing liquid of S2 step is 0.5-1.5wt% potassium persulfate aqueous solution, and the second washing liquid is composed of 1-2wt% ferrous sulfate, 0.5-1wt% EDTA and the rest water; the absorption liquid of S3 step is prepared from alkaline hydroxide, carbonate, interface modifier and water.The ultrasonic atomization wet process of the application has less solid precipitation amount of absorption liquid, high absorption rate of NO x and SO2, and will not corrode equipment in long-term use.

The application relates to the field of mortar, in particular to high-strength rapid-setting repair mortar and a preparation process thereof. The preparation process of the high-strength rapid-setting repair mortar comprises the following steps: preparing a coagulant; preparing modified bamboo fiber; preparing composite polypropylene fiber; preparing an anti-freezing agent; and preparing the repair mortar. The coagulant is prepared by taking acrylic acid, potassium persulfate and deionized water as raw materials to prepare A liquid, taking L-ascorbic acid, thio glycolic acid and deionized water as raw materials to prepare B liquid, then uniformly mixing methyl alkenyl polyoxyethylene ether, sodium methallyl sulfonate, acrylic amine and deionized water, and adding the A liquid and the B liquid to react, and finally adding the coagulant into the repair mortar. The coagulant can not only efficiently disperse the cement particle flocculation structure, release the free water wrapped therein, greatly reduce the mixing water consumption and reduce the water-cement ratio, but also effectively shorten the setting time of the repair mortar and improve the early strength.

This invention discloses a method for preparing 2-carboxylic acid diphenyl iodide ester. The method involves using 2-iodobenzoic acid and benzene as raw materials in an acidic solvent, with potassium persulfate and a heteropolyacid metal salt as a mixed catalyst, and controlling the reaction temperature at 10℃~20℃ to synthesize 2-carboxylic acid diphenyl iodide ester. The product is then purified. The mass ratio of 2-iodobenzoic acid, benzene, and the mixed catalyst in this invention is 250:85~95:2~5. The synthetic route is simple, and the purity of the prepared product is over 99.9%, meeting the high purity requirements of electronic chemical raw materials. The yield can reach approximately 90%, demonstrating high industrial application value. Furthermore, the catalyst used in this invention can be recycled, further reducing production costs.

The application discloses a kind of composite membrane for coal chemical industry wastewater treatment and preparation method thereof, belong to coal chemical industry wastewater treatment technical field, preparation steps are as follows: base film is placed in cold plasma processor and is handled, then it is transferred to pyridine and deionized water mixture, temperature 65-75 ℃, 3-chloro-2-hydroxypropyl methyl diallyl ammonium chloride is added, and heat preservation treatment 2-3h, obtain pretreatment film;Acrylic acid, acrylamide are added to acetic acid solution, after stirring, modified chitosan, potassium persulfate and N,N'-methylene bisacrylamide are added, continue stirring 2-3h, obtain treatment liquid;Pretreatment film is soaked in treatment liquid, nitrogen atmosphere, 60 ℃ is handled 2h, the application composite membrane can overcome the problem that existing treatment film is poor in use effect in treating wastewater containing oxidant, and stable performance, with high hydrophilicity, pollution resistance, adsorption, preparation method is simple, easy to scale production.

This invention discloses a method for preparing a Zr-MOF catalyst containing a Co single-atom site, belonging to the field of metal-organic framework synthesis and advanced oxidation catalysis technology. First, mesoporous Zr-MOFs (NKM-508) are prepared via a solvothermal method using H4TCPB-CH3 ligand and ZrCl4. Based on NKM-508, N,O coordination sites are constructed through aspartic acid amino modification and salicylaldehyde Schiff base reaction, ultimately anchoring a Co single atom to obtain the NKM-508-Co catalyst. This catalyst exhibits good stability, can efficiently activate potassium persulfate (PMS) to generate reactive oxygen species, can rapidly degrade various azo dyes such as eosin Y, orange G, methylene blue, and rhodamine B, and demonstrates excellent recyclability.

This invention discloses a modified sodium carboxymethyl cellulose and its preparation method, belonging to the field of polymer materials technology. It includes adding alkenylated modified cashew nut shell powder and methacryloyloxyethyltrimethylammonium chloride to anhydrous ethanol, followed by ultrasonic treatment to obtain a mixed organic solution; then adding sodium carboxymethyl cellulose to deionized water, stirring to dissolve, and heating to 65-70°C under nitrogen protection, adding potassium persulfate to control its concentration at 3×10⁻⁶. ‑3 Activate the solution by stirring for 10-15 min at a concentration of mol / L, then add a mixed organic solution dropwise while stirring. After the addition is complete, react at 65-70℃ for 5-8 h. After the reaction is complete, precipitate with acetone, wash 2-3 times with deionized water and anhydrous ethanol, filter, and dry in a vacuum drying oven at 55-65℃ to constant weight. Cool to obtain modified sodium carboxymethyl cellulose. The modified sodium carboxymethyl cellulose of this invention has good salt resistance and temperature resistance.

This invention discloses a method for predicting the dosage of potassium persulfate compound salt in the factory farming of Litopenaeus vannamei, belonging to the field of intelligent disinfection control in aquaculture. The method includes: acquiring the biomechanical parameters of potassium persulfate compound salt's inactivation of pathogenic Vibrio, reactive oxygen species attenuation parameters, Vibrio growth kinetic parameters, and shrimp safety threshold; constructing a microbial growth sub-model, a disinfectant inactivation sub-model, and a disinfectant concentration attenuation sub-model, respectively; and dynamically coupling these three sub-models into a dosage prediction model in system dynamics software. Real-time physicochemical parameters of the aquaculture water are input into the model, and the initial dosage concentration of potassium persulfate compound salt, effective sterilization duration, pathogen regrowth warning, and dosing interval are dynamically output. This invention can dynamically and accurately predict the disinfectant dosage based on the water quality parameters at the aquaculture site, achieving efficient Vibrio control while ensuring shrimp safety, and is suitable for intelligent disinfection management in factory shrimp farming.

The present application belongs to the technical field of contaminated soil remediation, and relates to a gel slow-release remediation material for organic contaminated soil and a preparation method thereof, which comprises the following steps: inoculating high-efficiency petroleum hydrocarbon-degrading bacteria into LB liquid culture medium and oscillating culture, centrifuging and resuspending to obtain a bacterial suspension; dispersing attapulgite powder in the bacterial suspension to obtain a compound; uniformly mixing the compound with a sodium alginate solution to obtain a core slurry; dropping the core slurry into a calcium chloride solution through a syringe to obtain a core microsphere; uniformly mixing potassium persulfate, calcium lactate and deionized water to obtain a cross-linking solution; soaking the core microsphere in the pre-cooled cross-linking solution, and cross-linking under light-proof conditions to obtain an intermediate microsphere; uniformly mixing sodium alginate, sodium lactate, sodium bicarbonate, a surfactant and deionized water to obtain a coating solution; soaking the intermediate microsphere in the coating solution, filtering out, and then soaking in a calcium chloride solution again, and cross-linking by standing.