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26 results about "Phenol" patented technology

Phenol is an aromatic organic compound with the molecular formula C₆H₅OH. It is a white crystalline solid that is volatile. The molecule consists of a phenyl group (−C₆H₅) bonded to a hydroxy group (−OH). It is mildly acidic and requires careful handling due to its propensity for causing chemical burns.

Method for removing phenol in phenol contained wastewater by using hollow fiber membrane

InactiveCN103304005AImprove stabilityImprove mass transfer efficiencyWater contaminantsWater/sewage treatment bu osmosis/dialysisHollow fibre membraneBenzene
The invention discloses a method for removing phenol in phenol contained wastewater by using a hollow fiber membrane. The method comprises the following steps of: mixing a carrier and a diluent to prepare an extractant, wherein the adopted extractant carrier is tributyl phosphate, and the adopted diluent is coal oil or benzene; stirring and fully mixing the extractant and a stripping agent to prepare treating fluid; removing the phenol out of the phenol contained wastewater by using a hollow fiber membrane device; and after pretreating the hollow fiber membrane device, injecting the treating fluid into a tube pass of a membrane component, and injecting the phenol contained wastewater into a shell pass of the hollow fiber membrane component, wherein the wastewater can be treated through the same membrane component or a plurality of serial membrane components in a circular manner for many times; after the wastewater is subjected to two-stage treatment, the phenol concentration is less than 100mg/L; and after the wastewater is subjected to five-stage treatment, the phenol concentration is less than 5mg/L, the removal rate reaches up to 99.8 percent, and the wastewater reaches the national emission standard.
Owner:BEIJING UNIV OF CHEM TECH

Method for detecting polar phenol type chlorinated/brominated disinfection by-products in water

InactiveCN106124646AHigh sensitivityReduce mistakesComponent separationGradient elutionPhenol
The invention provides a method for detecting polar phenol type chlorinated/brominated disinfection by-products in water. The method comprises steps as follows: 1) standard working solutions of 13 polar phenol type chlorinated/brominated disinfection by-products required to be detected are prepared; 2) a to-be-detected water sample is acidized, salted out, subjected to continuous liquid-liquid extraction, separated, concentrated, filtered and pretreated in other modes; 3) analysis is performed by means of a UPLC/ESI-tqMS (ultra-high performance liquid chromatography/electrospray ionization-triple quadrupole mass spectrometer): mass spectrum parameters, liquid chromatography parameters and gradient elution process parameters of the UPLC/ESI-tqMS are established; 4) a calibration curve is drawn and the concentration is calculated after a chromatographic peak of a chromatogram sample is preliminarily determined to be identical to that of a known standard substance and the chromatogram sample and the known standard substance are the same substance. The detection method is high in sensitivity, precision and accuracy, can achieve the purpose of rapidly and efficiently measuring the 13 polar phenol type chlorinated/brominated disinfection by-products in the water, particularly can rapidly and efficiently detect a trace quantity of polar phenol type chlorinated/brominated disinfection by-products in the water, and has relatively high practical value.
Owner:NANJING UNIV

Novel fire retardant microencapsulated red phosphorus and preparation method thereof

InactiveCN103724664APrevent self-aggregationImprove surface activityPtru catalystEfficient catalyst
The invention discloses a novel fire retardant microencapsulated red phosphorus which is formed by wrapping phenol-formaldehyde prepolymer (PFP) on the surface of superfine red phosphorus powder. Due to addition of a high-efficient catalyst in the preparation process, the surface activity of the red phosphorus is improved, the surface of the red phosphorus is tightly wrapped with a PFP layer, and meanwhile as methanol is added to prevent formaldehyde auto-agglutination and the pH value of a reaction solution in the wrapping process is controlled to be 1-6, the stability and the resistivity of the red phosphorus are improved, the machining property is improved, and meanwhile the moisture absorption rate and the PH3 release amount are greatly reduced.
Owner:NANJING UNIV OF SCI & TECH

Method for preparing mercury-free ammonium detection test paper

InactiveCN101887055AEasy to makeEasy to carryAnalysis using chemical indicatorsNitrosoSodium phosphates
The invention relates to a method for preparing mercury-free ammonium detection test paper, and belongs to the field of analytical chemistry. Based on filter paper of 1 square centimeter, the ammonium test paper consists of 0.5 to 5.6 milligrams of soaked phenol, 0 to 0.1 milligram of sodium nitroprusside, 0.35 to 4.5 milligrams of disodium hydrogen phosphate, 3.0 to 10 milligrams of sodium phosphate, 0.3 to 4.6 milligrams of sodium hypochlorite and 0.15 to 0.5 milligram of sodium hydroxide. The reagent content of the ammonium test paper is only one percent of that in other ammonium ion test methods. The test paper of the invention has the advantages of simple manufacturing, convenience to carry, simple, convenient and rapid operation, vivid detection, high selectivity and capability of judging the ammonium ion content of a sample by visually comparing the color of the developing test paper with that of a standard color card. Reagents used by the method are ordinary chemical reagents which are non-toxic, safe and reliable and can be used for testing the ammonium content of various nitrogen fertilizers, soil, crop hydroponics nutrient solution, different kinds of ammonium-containing solution and sewage.
Owner:UNIV OF JINAN

Preparation method and application of efficient agricultural water suspension and dispersion agent

InactiveCN109042634AGood dispersionHigh suspension rateBiocideAnimal repellantsFunctional monomerPhosphate
The invention discloses a preparation method and application of an efficient agricultural water suspension and dispersion agent. The efficient agricultural water suspension and dispersion agent is prepared from the following components in percentage by weight: 90 to 10 weight percent of a substance A and 10 to 90 weight percent of a substance B, wherein the substance A is a water-soluble macromolecular polycarboxylate compounded with a comb type structure, which is formed by copolymerizing saturated carboxylic acid, unsaturated carboxylic acid and hydroxyl-containing fatty alcohol or phenol polyoxyethylene polypropylene oxide ether ester compound and a third functional monomer under the action of an initiator through solution copolymerization and alkali neutralization; the substance B comprises modified aryl phenol polyoxyethylene ether sulfonate, modified aryl phenol polyoxyethylene ether phosphate or modified aryl phenol polyoxyethylene ether carboxylate. The dispersant disclosed bythe invention is applicable to high-content, especially ether urea type and triazole type insecticidal bactericide pesticide water suspension agents, and provides good wetting and dispersion effects.The preparation method has the advantages of low production cost, practical and feasible technology, environment protection and no pollution and good application performance.
Owner:南京拓际生物科技有限公司

Preparation method of aspergillus niger compound killing agent in municipal waste transfer station

InactiveCN113383800AReduce in quantityQuick snapBiocideFungicidesMonoglycerideFatty acid glycerol esters
The invention provides a preparation method of an aspergillus niger compound killing agent in a municipal waste transfer station, wherein the preparation method comprises clove essential oil, artemisia apiacea essential oil, tea tree essential oil, clove hydrolat, artemisia apiacea hydrolat, tea tree hydrolat, a lotus leaf extract, fatty acid monoglyceride, 1-hexadecyl-3-methylimidazolium chloride, 1-ethyl-3-methylimidazolium chloride and borneol. The plant essential oil contained in the aspergillus niger compound killing agent in the municipal waste transfer station contains various terpenoids, aldehydes, phenols and other natural organic small molecule compounds, has extremely strong bactericidal activity, has killing and long-term inhibition effects on aspergillus niger in the municipal waste transfer station, and reduces the number of bacteria; and meanwhile, due to the special aromatic odor of the plant essential oil, malodorous gas molecules released by the mould can be efficiently, rapidly and safely captured, adsorbed and controlled, and the malodorous odor and peculiar smell of the air can be well removed.
Owner:HONGHU LANTIAN ANHUAN ENERGY SAVING EQUIP

Binder for resin composite material and preparation method of binder

ActiveCN112940651AReduce reunionGuaranteed decentralizationGraft polymer adhesivesPolymer sciencePtru catalyst
The invention provides a binder for a resin composite material and a preparation method of the binder, and the binder is prepared by polymerizing the following components in parts by mass: 20.8-22.7 parts of a phenol alcohol head (2-methoxy-6-(2-propenyl)phenol), 291.6-311.4 parts of a cyclic monomer, 0.8-1.6 parts of a catalyst, 137.8-145.3 parts of an unsaturated alcohol monomer, 24.7-32.9 parts of a silane coupling agent, 6.1-8.3 parts of a reducing agent, 5.2-9.4 parts of an initiator, 7.1-11.9 parts of a neutralizing agent, 2.7-4.3 parts of a chain transfer agent and the balance of deionized water. The total mass is 1000 parts. The self-made polyether, the unsaturated alcohol and the silane coupling agent are used as reaction raw materials, the dosage, the dropwise adding sequence and the dropwise adding time of reaction monomers are well controlled, and the adhesive polymer with ideal molecular structure and performance is prepared, so that the polymer has better adhesion and adaptability, and the prepared adhesive also has more excellent adhesion and adaptability.
Owner:HUBEI UNIV OF TECH

Method for strengthening rhodococcus to degrade aniline by utilizing environmental stress

ActiveCN111908620APromote degradationImprove degradation rateTreatment using aerobic processesWater contaminantsGroundwater remediationAniline
The invention discloses a method for strengthening Rhodococcus sp. to degrade aniline by utilizing environmental stress, and belongs to the field of biological strengthening treatment of environmentalpollution. According to the method disclosed by the invention, the Rhodococcus sp. is pretreated by using phenol, NaCl and low temperature (15-25 DEG C) mainly according to the principle that the response of the Rhodococcus sp. to phenol, NaCl, aniline and low temperature stress is the same or similar, so that the degradation capacity of the Rhodococcus sp. to aniline under abiotic environmentalstress is improved. The method provided by the invention has a remarkable effect of improving the aniline treatment capacity, is simple and convenient in process, low in cost and free of secondary pollution, and can be widely applied to industrial wastewater treatment, soil remediation, underground water remediation and other scenes.
Owner:CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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