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153results about How to "Effective inactivation" patented technology
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Preparation method for cellfree intestinum tenue submucosa biological material
ActiveCN101366975ARepair defectRepair membranous defectsProsthesisBiocompatibility TestingIntestinal submucosa
The invention relates to a method for preparing a biomaterial of acellular small intestinal submucosa, which comprises the steps of preposition treatment, acellular treatment, enzyme treatment, preparations of membranous products and particle products. Compared with the prior art, the biomaterial has higher bioactivity and biocompatibility, no obvious immune rejection and no toxic effect on cells; besides, the biomaterial has a certain mechanical strength and toughness, and variable shape, size and thickness, thereby being convenient for clinical suturing and fixing. At the same time, the preparation method has the advantages of unlimited raw material source, cell-free residues, no ethical issues and being capable of effectively inactivating virus. The prepared products are applicable to the biomedical engineering fields, such as repairing defections of body tissue, serving as tissue filling materials, repairing facial depression deformity, serving as tissue reinforcements to replace fascia, repairing membranous defections and malnourished and infected surfaces of wound, serving as materials for biodegradable stents, and serving as injectable filling materials.
Owner:SHAANXI RUISHENG BIOTECH
Production method of human fibrinogen
ActiveCN101703763AEnsure product safetyLow content of impurity proteinPowder deliveryPeptide/protein ingredientsProtein contentRNA
The invention provides a production method of human fibrinogen, which is against the method that domestic conventional manufacturers extract and separate human fibrinogen from component I, and the method for extracting fibrinogen from cryoprecipitate is adopted; an S / D method and a water-bath heat treating method are adopted to carry out double-virus inactivation, thereby effectively inactivating fat enveloped virus and non-fat enveloped virus, and ensuring the security of products; the purity of extracted products reaches as high as more than 90%, the protein content of impurities is low, and the clinical side reaction of the product is small. In the production process of the human fibrinogen of the invention, glycine is utilized as a stabilizer, the freeze-drying time is prolonged about 6-8 days to ensure the temperature variation of the product to be stable in freeze-dying process, but the freeze-drying time of general manufacturers is about 3 days; after being freeze-dried for 6-8 days, the product has uniform structure, then water bath heat treatment is carried out on the product, thus the product can be evenly heated in the shortest time, thereby achieving the purposes of effectively inactivating DNA and RNA non-fat enveloped virus and simultaneously ensuring the stability of human fibrinogen.
Owner:GREEN CROSS CHINA BIOLOGICAL PRODS
Process for producing immunolobulins for intravenous administration and other immunolobulin products
InactiveCN1311797AImprove product purityEfficient removalSerum immunoglobulinsAntiviralsIntrathecalImmunoglobulin products
The presenten invention also relates to a liquid immunoglobulin G (IgG) product which has a purity of more than 95%, a content of IgG monomers and dimers of at least 95% and, a content of IgA of less than 6 mg of IgA / I. The liquid product is stable and ready for instant intravenous administration.
Owner:CSL BEHRING AG
Ship ballast water treatment method and discharge reactor
InactiveCN101759319APromote decompositionEffective inactivationWater/sewage treatment by irradiationWater/sewage treatment by magnetic/electric fieldsBallast water treatmentHigh voltage pulse
The invention provides a ship ballast water treatment method and a discharge reactor. Ballast water firstly reaches a stainless steel filter screen through a water inlet pipeline, and is filtered by a microporous filter to enter the discharge reactor with particle catalyst; pulse high voltage is applied between a high voltage electrode and a ground electrode of the discharge reactor to generate high voltage pulse discharge; oxygen-containing gas is communicated with the discharge reactor during discharging process, the ballast water treated by the discharge reactor enters a ballast cabin via a filter arranged at the outlet of the discharge reactor. The invention enables the plasma generated by discharging to directly and rapidly react with exotic causative agent and harmful aquatic matter in ballast water, and kills and inactivates the exotic causative agent and harmful aquatic matter under a series of online generated physical and chemical efficacies, and accordingly reduces the pollution of the ballast water to the ocean.
Owner:HARBIN ENG UNIV
Sludge treatment method based on wet oxidation
ActiveCN104355514AReduce processing costsRealize harmless treatmentSludge treatment by de-watering/drying/thickeningSludge treatment by oxidationWater vaporProduct gas
The invention relates to a sludge treatment method based on wet oxidation. The sludge treatment method comprises the following steps: fully mixing a sludge material and hot liquid in a physical-chemical pre-treater during a pretreatment process; after the preparation of the sludge material is completed, conveying the sludge material into an oxidation reaction process; during the oxidation reaction process, carrying out wet oxidation reaction between the sludge material and oxygen of which the temperature is 60 DEG C-80 DEG C in an oxidation reactor, wherein gas and high-temperature material are generated after the wet oxidation reaction is completed, and the gas mainly contains carbon dioxide and water vapor and is directly discharged into the air; enabling the high-temperature material to enter into a flash dehydration process, wherein the high-temperature material firstly enters a flash tank for flashing to produce gas and material, the produced gas is purified and then discharged into the air; enabling the generated material to pass through a heat exchanger, then carrying out solid-liquid separation to obtain separated solids and liquid which can be used for the second time. By the sludge treatment method, the sludge can be efficiently and reasonably treated so that the treated sludge can be recycled. The sludge treatment method can be widely applied to sludge treatment.
Owner:北京绿创生态科技有限公司
Method for removing harmful algae in water body by adopting electro-Fenton
InactiveCN101962216AStable in natureNo electrocoagulationWater/sewage treatment by oxidationFerric hydroxideElectrolysis
The invention belongs to the technical field of environmental protection and in particular relates to a method for removing harmful algae pollution in water body by adopting electro-Fenton. Hydrogen peroxide and ferrous ions in a reactor react to generate hydroxyl radicals, at the same time, the ferrous ions are regenerated from iron ions and iron hydroxide in the cathode region for electrolysis through reduction, thus continuously generating vast hydroxyl radicals, efficiently inactivating algae cells, simultaneously rapidly carrying out oxidation degradation on the microcystins and effectively avoiding secondary pollution. The body part of the reactor comprises a power source, electrodes, an electrolytic bath and a magnetic stirrer. After the algae liquid to be treated is introduced to the electrolytic bath, the magnetic stirrer at the bottom of the electrolytic bath is used for ensuring the algae liquid to be uniformly distributed in the whole reactor. Under the set process parameters, the method can realize rapid inactivation of the harmful algae and simultaneously realize efficient degradation of the microcystins.
Owner:FUDAN UNIV
Method for catalytic wet oxidation of industrial sludge
InactiveCN105776794ALow solidsAchieve reductionSludge treatment by de-watering/drying/thickeningSludge treatment by oxidationSludgeOrganic content
The invention relates to a method for catalytic wet oxidation of industrial sludge. The method includes the steps of (1), uniformly mixing industrial sludge raw materials with a catalyst, delivering the mixture into a reaction kettle, and feeding oxygen into the reaction kettle so as to subject the industrial sludge to wet oxidation; (2), delivering the industrial sludge subjected to wet oxidation into a cooler to cool, and delivering the cooled industrial sludge into a three-phase separator so as to obtain solid sludge at the bottom of the three-phase separator; (3), subjecting the solid sludge to dehydration treatment. Compared with the prior art, the method for catalytic wet oxidation of the industrial sludge has the advantages that the industrial sludge is reduced remarkably, refractory organics are removed to kill harmful pathogenic bacteria, treated sludge organic content is low to facilitate subsequent treatment, a liquid phase obtained after solid waste separation returns to an industrial wastewater treatment system to supplement a carbon source, and wet oxidation conditions can be lowered remarkably by the catalyst, so that energy consumption is reduced.
Owner:SHANGHAI HUANGU INVESTMENT MANAGEMENT CO LTD
Method for producing human prothrombin complex
ActiveCN102151289AInhibition of activationHigh yieldPeptide/protein ingredientsMammal material medical ingredientsActivation methodVirus inactivation
The invention relates to a method for producing a human prothrombin complex. The method is characterized in that the following steps of direct separation and extraction from blood plasma, virus inactivation, refining and secondary virus inactivation are adopted to obtain finished human prothrombin complex. As the method adopts the step of direct separation and extraction from the blood plasma, the separation condition is mild, the batch-to-batch difference of the products is small, the blood coagulation factor activity is stable, the yield rate is high, and the activation phenomenon basicallydoes not exist. The virus inactivation process adopts a method of combining an S / D (organic solvent / detergent) method and a dry and thermal activation method and fully ensures that the virus safety of the human prothrombin complex.
Owner:哈尔滨派斯菲科生物制药有限公司
High-temperature kitchen waste degradation microbial agent and preparing and using method thereof
InactiveCN104531550AFully degradedPromote degradationBacteriaSolid waste disposalEscherichia coliMicrobial agent
The invention discloses a high-temperature kitchen waste degradation microbial agent and a preparing and using method thereof. A microbial strain comprises, by weight, 15-30 parts of nuby land anoxybacillus, 10-25 parts of liquefaction thermophilic bacillus, 20-40 parts of hot nitrogen bacillus and 25-50 parts of geobacillus stearothermophilus. Compared with the prior art, the high-temperature kitchen waste degradation microbial agent has the beneficial effects that as for kitchen waste with different integrants, reasonable matching on single bacterium powder can be carried out, and single bacterial strains are cooperated for degrading the kitchen waste in a collaborative mode; the number of effective viable bacteria in the single bacterium powder in the composite microbial agent is large, and when the microbial agent is used for degrading the kitchen waste, only a small number of microbial agents is needed for sufficiently and rapidly degrading the kitchen waste; components in the microbial agent are high-temperature cultures, the optimum fermentation temperature ranges from 55 DEG C to 65 DEG C, pathogenic bacteria such as escherichia coli and staphylococcus aureus in the kitchen waste can be effectively inactivated in the fermentation process, and the biosecurity is high.
Owner:SHANDONG URBAN MINING REGENERATION RESOURCE
Protoporphyrin fluorescent carbon dot, and preparation method and application thereof
ActiveCN107011511AGood water solubilityThe reaction steps are simpleBiocideFungicidesBactericidal effectSolubility
The invention relates to a protoporphyrin fluorescent carbon dot, and a preparation method and application thereof. The preparation method comprises the following concrete steps: reacting protoporphyrin with polyethyleneimine (PEI) at 170 to 220 DEG C for 7 to 10 h; and then successively carrying out cooling, dialysis and filtering so as to obtain the protoporphyrin fluorescent carbon dot. The protoporphyrin fluorescent carbon dot prepared in the invention has good water solubility and maintains the intact properties of protoporphyrin; photodynamic effect produced by a porphyrin photosensitizer can effectively inactivate yeast cells, so bactericidal effect is exerted; and the preparation method has the advantages of simple reaction steps, mild reaction conditions, small danger, low toxicity, etc.
Owner:SOUTHWEST UNIVERSITY
Preparation method of high-purity human coagulation factor IX
InactiveCN105175486AReduce lossesPrevent denaturation and inactivationPeptide preparation methodsUltrafiltrationPolyethylene glycol
The invention relates to a preparation method of a high-purity human coagulation factor IX, which comprises the following steps: melting refrigerated plasma, and carrying out low-temperature centrifugation; adsorbing with a DEAE (diethylaminoethanol) Sephadex A-50 gel to remove the coagulation factor IX in the cold-glue plasma; removing impure proteins in the solution by using polyethyleneglycol; carrying out S / D virus inactivation; carrying out anion exchange column chromatography to obtain a purified coagulation factor IX solution; passing through a heparin affinity column for further chromatography to obtain a high-purity coagulation factor IX solution; carrying out ultrafiltration, dialysis and concentration, and adding arginine hydrochloride and glycinate as protective agents; filtering through a 20nm filter element to remove viruses; carrying out freeze-drying; and carrying out dry heat virus inactivation. The protein protective agents are added during the gel adsorption, column chromatography and ultrafiltration dialysis, thereby lowering the activation probability of the FIX product thrombin and enhancing the qualification rate of the product. The technique has high product yield; the FIX specific activity can reach 150 IU / mg or so which is much higher than that of the traditional product; and by performing the three-step virus inactivation, the product is safe and reliable to use.
Owner:上海洲跃生物科技有限公司
Ship exhaust and ballast water integrated treatment system
PendingCN106865840AAvoid safety hazardsReduce processing costsWater/sewage treatment by electrochemical methodsDispersed particle separationExhaust gasScrubber
The invention discloses a ship exhaust and ballast water integrated treatment system and belongs to the field of an environmental technology. The integrated treatment system comprises an electrochemical seawater modification reactor, a ballast water treatment reactor and an exhaust gas purifying scrubbing tower and is characterized in that the exhaust gas purifying scrubbing tower comprises a micro-nano-bubble generating device, an oxidizing scrubber and an alkaline absorbing scrubber. The basic principle of the system is that the electrochemical seawater modification reactor carries out electrolysis on seawater so that two liquid flows such as a strong oxidizing liquid flow and an alkaline liquid flow having different performances are formed. The strong oxidizing liquid flow can be used to deactivate microbes in ballast water and to oxidize ship exhaust. The alkaline liquid flow can be used to neutralize and absorb oxidized ship exhaust. H2 produced by the electrochemical seawater modification reactor is used for a hydrogen fuel cell so that H2 recovery and recycle are realized and explosion damage is prevented. The system provides a novel energy supply method for a ship with limited energy. The system realizes efficient treatment on ship exhaust and ballast water, has a small size and is conducive to use in the ship.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
Preparation method of wear-resisting ceramic tile capable of releasing negative ion
The invention discloses a preparation method of a wear-resisting ceramic tile capable of releasing a negative ion. A finished product of the ceramic tile is obtained by ball-milling a powder material,pulping, spraying a powder, forming, biscuiting, glazing, glaze-firing and edging; a used glaze comprises a negative ion powder; the powder material comprises potassium feldspar, albite, nepheline, kaolin, washing mud, barium carbonate, calcined talcum, nano-zinc oxide, methylcellulose, sodium tripolyphosphate, a preservative. The preparation method adopts the low-temperature biscuiting and high-temperature glaze-firing process; the ceramic tile produces a large quantity of negative ions, the glaze is flat and smooth, the resistance to thermal shock and the stain resistance are good, and thepreparation method has excellent performances of wear resistance and acid corrosion resistance, and has excellent economic and social benefits.
Owner:广西亚欧瓷业有限公司
Preparing method for pig thrombin freeze-dried powder
ActiveCN105250226AEffective inactivationImprove securityPowder deliveryPeptide/protein ingredientsFreeze-dryingDEAE-Sepharose
The invention discloses a preparing method for pig thrombin freeze-dried powder. The preparing method comprises the following steps that anticoagulant pig plasma and gel are mixed and stirred for adsorption and pass through a column for elution, and a prothrombin solution is obtained; normal saline is added to rabbit brain powder, then the prothrombin solution and CaCl2 are added for zymogen activation, a crude thrombin enzyme solution is obtained, subjected to ultrafiltration for desalination and concentrated, viral inactivation is carried out, an obtained crude enzyme solution passes through DEAE-Sepharose Fast Flow chromatographic column, elution is carried out, target peaks are collected, and pig thrombin is obtained; the pig thrombin is added with mannitol or dextran 40, filtering, sterilizing, subpackaging, freeze drying and vacuum tamponing are carried out, an aluminum plastic combined cover is rolled, and a pig thrombin freeze-dried product is obtained; the freeze-dried product is subjected to dry heat treatment at 100 DEG C for secondary virus inactivation, and the pig thrombin freeze-dried powder is obtained after packaging. The specific activity of pig thrombin in the product is not lower than 130 U / mg, the whole process is simple in step and easy to implement, the product safety is improved, and the preparing method is suitable for industrial production.
Owner:WUHAN HITECK BIOLOGICAL PHARMA
Microfiber collagen hemostatic material and preparation method thereof
ActiveCN107137758ASufficient tensile strengthGood hemostatic effectSurgical adhesivesHeatFibrosisRadiation Sterilization
The invention relates to a microfiber collagen hemostatic material and a preparation method thereof. The preparation method of the material includes the first step of sodium sulfide unhairing, the second step of shredding and fibrosis, the third step of swelling control, the fourth step of drying, the fifth step of depolymerisation and fluffing, and the sixth step of Co60 radiation sterilization, wherein in the fifth step, the obtained fasciculus is treated using a hammer mill to obtain a microfiber collagen product. According to the method, the use concentration of sodium sulphide is reduced, the efficiency of unhairing is improved, and degreasing and impure protein removal are effectively conducted; collagen materials are not oxidized and degenerated, the activity of microfiber collagen is easy to maintain, and the hemostatic effect is improved. Acid is introduced in the treating process, the degreasing and protein removal are more effective, and the adhesion property of the hemostatic material is guaranteed.
Owner:林贵梅
Virus inactivation method for solution of globulin
ActiveCN101927011AHigh recovery rateDoes not affect biological activityPeptide preparation methodsImmunoglobulinsGlobulinVirus inactivation
The invention provides a virus inactivation method for solution of globulin. An optimum proportion with a practical value of various parameters during virus inactivation with sodium caprylate is provided by a large number of researches on various conditions such as a temperature, a pH value, concentration of caprylate, concentration of protein and hatch time during the virus inactivation. Experiments prove that the virus inactivation method for the solution of the globulin has the advantages of simpleness, safety, rapidness, effectiveness, high protein recovery and no effect on the bioactivity of a target protein.
Owner:国药集团武汉血液制品有限公司
Photodynamic sterilization fresh-keeping film for packaging ready-to-eat jellyfish
ActiveCN109517226AHigh sterilization rateImprove the bactericidal effectFruit and vegetables preservationFood ingredient for microbe protectionFlavorReady to eat
The invention discloses a photodynamic sterilization fresh-keeping film for packaging ready-to-eat jellyfish. The photodynamic sterilization fresh-keeping film is prepared in the mode that food-gradecurcumin and food-grade EDTA disodium are compounded to serve as a photosensitizer compound, chitosan and glycerinum are combined to serve as a matrix material, and a solution-casting method is conducted. After the photodynamic sterilization fresh-keeping film is adopted to package the ready-to-eat jellyfish, the photodynamic sterilization fresh-keeping film is matched with non-toxic LED visible light sources for use, and thus the aerobic bacterial count on the ready-to-eat jellyfish is effectively decreased. The tests show that the disinfection rate of the photodynamic sterilization fresh-keeping film on the ready-to-eat jellyfish is up to 99.9%, the sterilization effect is significant, the flavor and taste of the ready-to-eat jellyfish are not significantly affected, the shelf life of the ready-to-eat jellyfish can be prolonged from one month to five months, and the food safety problem of the ready-to-eat jellyfish is ensured.
Owner:FUJIAN AGRI & FORESTRY UNIV
Lost label detection method of RFID system
ActiveCN110807339AEffective inactivationReduce detection impactMemory record carrier reading problemsHigh level techniquesHash functionAlgorithm
The invention relates to a lost label detection method for an RFID (Radio Frequency Recognition Device) system, which comprises the following steps that: a reader inactivates unknown labels in the RFID system through a grid table constructed by the reader according to IDs (Identities) and hash functions of all known labels, f1 represents the length of each frame, and l represents the number of random seeds; and the reader detects lost tags in the RFID system according to the IDs of all known tags and multiple hash operations based on ID right shift, performs multiple mapping on each tag duringhash operations, and performs hash operations before the ith mapping and after the IDs of the remaining tags shift rightwards by i-1 bits. According to the method, most of unknown tags can be effectively inactivated, the influence of the unknown tags on detection of the lost tags is greatly reduced, the response time can be shortened, and the detection efficiency of the lost tags is improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Method for efficiently inactivating microcystis aeruginosa by irradiating electron beams
InactiveCN101723481AEffective inactivationEfficient degradationWater/sewage treatment by irradiationWater sourceMicrocystis
The invention relates to a method for efficiently controlling, eliminating and inactivating blue algae, particularly microcystis aeruginosa in the source water, the water in the water plant, the scenic lake water and the river water by irradiating electron beams, belonging to the field of the water pollution control, the water treatment technology and the environmental protection. The test proves that the electron beams are irradiated by an electronic irradiating device which has the electron beam irradiating energy of 1.8 MeV and the electron beam current of 1.0 mA at the room temperature of 25 DEG C and the atmospheric pressure of 1013.2 hpa, and the optimum dosage of the electron beams irradiated for eliminating or inactivating the microcystis aeruginosa is 4-5 kGy.
Owner:SHANGHAI UNIV
Novel biological artificial cornea capable of realizing cellularization through in-vivo induction as well as realizing quick transparency
InactiveCN105688282ACurvature maintenanceQuick fitEye implantsTissue regenerationDepyrogenationBiocompatibility
The invention relates to a novel biological artificial cornea capable of realizing cellularization through in-vivo induction as well as realizing quick transparency. The novel biological artificial cornea is prepared with a method in the steps as follows: 1, obtaining of a cornea raw material; 2, preparation of a cornea scaffold; 3, deep modification of the cornea scaffold; 4, deep inactivation of the cornea for removal of pyrogen; 5, irradiation sterilization of the cornea; 6, cultivation and implantation of corneal endothelial cells. Deep and light lamellar biological artificial corneas with different thicknesses and a full-thickness biological artificial cornea can be established. After being implanted, the novel biological artificial cornea can be quickly healed, becomes transparent quickly and keeps good refraction, the eyesight can be recovered and the eyeball is beautified. The obtained biological artificial cornea has good mechanical performance and biocompatibility, a full-thickness cornea graft is formed after endothelial cells are implanted on a full-thickness cornea stroma scaffold and can be rebuilt in vivo, perform in-vivo induction to promote growth of corneal limbal stem cells and growth of corneal epithelial cells and become transparent quickly on the basis, the treatment efficiency and effects are improved, and an application of lamellar keratoplasty and an application of penetrating keratoplasty are both considered.
Owner:广州宏畅生物科技有限公司
Ultraviolet/titanium dioxide (UV/TiO2) reactor for disinfecting drinking water treated by activated carbon
InactiveCN101723484AEffective combinationEasy to installWater/sewage treatment by irradiationActivated carbonReactor system
The invention provides an ultraviolet / titanium dioxide (UV / TiO2) reactor for disinfecting drinking water treated by the activated carbon, aiming at solving the problem on the biosafety of bacteria, particularly the carbon-adsorbed bacteria in drinking water treated by activated carbon. The UV / TiO2 reactor is an integrated UV / TiO2 reactor system which has the advantage of disinfecting by UV and the characteristic of catalyzing by TiO2 and is optimized and integrated with the process. The UV / TiO2 reactor can effectively inactivate the free bacteria and the carbon-adsorbed bacteria in the drinking water treated by the activated carbon, can ensure the disinfected drinking water to reach the sanitary standard for drinking water (GB5749-2006) and can bear the water supplying load change on some degree, thereby having wide application prospect.
Owner:HOHAI UNIV
Preparation method of antibacterial and antiviral nano water-based slurry
PendingCN111789131AImprove stabilityTo kill virusBiocideMaterial nanotechnologyEscherichia coliImplant
The invention provides a preparation method of antibacterial and antiviral nano water-based slurry. The preparation method comprises the following steps: dropwise adding an inorganic zinc salt solution into a sodium hydroxide solution, controlling the temperature and pH value to prepare columnar nano ZnO powder; then, mixing columnar nano ZnO powder, a Cu2SO4 water solution, and a certain amount of NaOH, CTAB, a GO water solution and hydrazine hydrate, carrying out an ultrasonic reaction to prepare Cu2O-ZnO-GO nano composite powder, finally adding the Cu2O-ZnO-GO nano composite powder into a mixed dispersion liquid, and stirring to obtain the antibacterial and antiviral nano water-based slurry. The slurry is characterized in that columnar nano ZnO and Cu2O simulate a dragonfly wing nano bulge structure; and ZnO and Cu2O are uniformly loaded by virtue of the large surface area of GO. The formed nano composite powder can effectively inactivate bacteria such as escherichia coli, staphylococcus aureus and streptococcus pneumoniae and non-enveloped viruses such as influenza viruses and SARS, and has a wide application prospect in the fields of coatings, paints, implants, household appliances and the like.
Owner:宿迁空天新材料有限公司
BODIPY-containing bactericidal material and preparation method and application thereof
ActiveCN108752401AComplete retention propertiesReserved natureAntibacterial agentsAntimycoticsSolubilityYeast
The invention discloses a BODIPY-containing bactericidal material and a preparation method and application thereof. The preparation method comprises that BODIPY-Br and sodium azide undergo a reactionto produce BODIPY-N3, BODIPY-N3 and acetylated maltoheptaose undergo a reaction under the catalytic action of a CuCl / PMDETA complex to produce BODIPY-Mal, and the BODIPY-Mal, iodic acid and iodine undergo an iodination reaction to produce the BODIPY-Mal-I bactericidal material. The BODIPY-Mal-I bactericidal material has good water solubility and completely retains the properties of BODIPY. The photodynamic power generated by BODIPY-Mal-I can effectively inactivate yeast cells and especially kill gram-positive bacteria. The preparation method has the advantages of simple processes, mild reaction conditions, low risk and low toxicity.
Owner:SOUTHWEST UNIVERSITY
Method for treating short-flow water with sedimentation and air-floating coupling as core
InactiveCN103523967AShort processReduce infrastructure costsMultistage water/sewage treatmentFlocculationWater quality
The invention discloses a method for treating short-flow water with sedimentation and air-floating coupling as a core, and relates to short-flow water treatment methods with sedimentation-air-floating coupling as cores and with multiple water purification technologies integrated. The method aims to solve the problem that an existing water purification technological process is long, the occupied area is large, capital construction cost is high, and operating cost is high. The method comprises the first step of adding and mixing coagulants and carrying out a flocculation reaction, the second step of carrying out mud and water separation, the third step of carrying out advanced process treatment and the fourth step of carrying out disinfection. A filter pool does not need to be arranged in the method, and the method is short in technological process, low in capital construction cost, convenient to operate and manage, low in operating cost and good in output water quality. The method is mainly used for treating city life drinking water.
Owner:HARBIN INST OF TECH
Anti-bacterial household paper and making method thereof
InactiveCN107524052ALow costGood antibacterial and antibacterial propertiesSpecial paperPaper/cardboardAnti bacterialDefoaming Agents
The invention discloses an antibacterial household paper, which comprises pulp, additives and antibacterial agents. The pulp comprises 45-65 parts of unbleached hardwood pulp, 10-20 parts of bamboo pulp, 15-25 parts of grass pulp, additives Including 2-4 parts of retention and drainage aid, 2-6 parts of defoamer, 1-5 parts of resin barrier remover, 2-7 parts of APAM, 3-7 parts of cationic disperse rosin, 6-10 parts of cationic starch, 2-7 parts of PPE 6 parts, 3-9 parts of surface enhancer, 2-10 parts of modified alkyd resin, 1-5 parts of amine type or quaternary ammonium cationic surfactant, antibacterial agent including 2-6 parts of quaternary ammonium salt, 3 parts of guanidine salt ~10 parts, chitosan 7~12 parts, haloamine polymer 3~8 parts; this product has the advantages of cheap price and good bactericidal effect.
Owner:YIWU YINAN PAPER IND CO LTD
Method for deactivating pathogen in mud of city waste water factory
InactiveCN1554604AGuaranteed Total SurvivalGuaranteed inactivationBio-organic fraction processingClimate change adaptationSludgeSewage
The method of deactivating pathogen in mud of city waste water treating yard belongs to the field of mud resource utilizing technology. Material refluxing method is adopted to realize the circulation of dominant fermentation colony, marketable VT bacteria is used as inducing bacteria in initial fermentation, and the ratio between the thrown amendment and refluxed material is regulated based on the property of mud. In the dynamic aerobic fermentation reactor, dynamic aerobic fermentation is performed for about 10 days to deactivate pathogen under certain ventilation and stirring conditions. The method can raise the temperature of the material to over 55 deg.c and maintain the temperature for over one week without needing outer heat source in deactivating pathogen. The method makes mud become harmless in low cost and high efficiency.
Owner:TONGJI UNIV
Antiseptic material and a method for the production and use thereof
InactiveCN101835499AReduce economyLower energy requirementsBiocideWater contaminantsCross-linkChemical industry
The invention relates to the chemical industry, in particular, to a substance which exhibits antiseptic properties and to a method for the production and use thereof. The inventive substance can be used as a filtering material or an additive for the mixture of filtering materials, or as a component of filtering composites used for disinfecting and cleaning liquids, mainly drinking water, or gases. The inventive antiseptic material consists of a solid non-water soluble cross-linked polymer material, which contains chlorine atoms reversibly bound with nitrogen atoms and is characterised by the following general formula: M(F)l.0-5.5(Ph)0,6-1.0Cl-4.2, where M - melamine, F - bridge and terminal groups-formaldehyde producers, Ph - phosphorus in oxidation state of +5, Cl - chlorine atoms bound with nitrogen atoms, wherein the above-mentioned material is cross-linked by binding phosphorus-containing ions with melamine links of polymer chains. The inventive antiseptic material producing method involves chlorinating the solid non-water soluble cross-linked polymer material which is produced by the condensation of melamine phosphate and paraform in an aqueous solution, wherein the above-mentioned material is cross-linked by binding the phosphorus-containing ions with the melamine links ofpolymer chains directly during the production process of said product.
Owner:艾库弗拉有限责任公司
A sludge treatment method based on wet oxidation
ActiveCN104355514BReduce processing costsRealize harmless treatmentSludge treatment by de-watering/drying/thickeningSludge treatment by oxidationWater vaporHot liquids
Owner:北京绿创生态科技有限公司
Magnetic chitosan microsphere/zinc oxide composite antibacterial agent and preparation method thereof
The invention discloses a magnetic chitosan microsphere / zinc oxide composite antibacterial agent. A preparation method comprises the following steps: taking magnetic chitosan microspheres prepared byusing a one-step precipitation method as a carrier, putting the magnetic chitosan microspheres into a Zn(Ac)2.2H2O solution, adding an NaOH solution with a certain concentration, controlling the temperature and stirring, and carrying out a chemical deposition reaction to obtain the magnetic chitosan microsphere / zinc oxide composite antibacterial agent. The surface of the composite antibacterial agent is loaded with a large amount of nanometer granular zinc oxide, the composite antibacterial agent is high in inactivation ratio for bacteria in water and lasting in effect, and the composite antibacterial agent is of magnetism and is convenient to recycle.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Method used for inactivating virus based on atmospheric pressure low temperature plasma activated solution
The invention discloses a method used for inactivating virus based on an atmospheric pressure low temperature plasma activated solution. The method comprises following steps: 1, gas is introduced intoan atmospheric pressure low temperature plasma generator so as to realize generation of an atmospheric pressure low temperature plasma through excitation; 2, an atmospheric pressure low temperature plasma activated solution is subjected to activation so as to obtain a plasma activated solution; 3, and the plasma activated solution is used for treating a solution containing virus. The method is capable of killing virus effectively; no toxicity, no irritation, and no peculiar smell is caused; environment pollution caused by activation of virus with chemical reagents such as formaldehyde is avoided; and in preparation process of the atmospheric pressure low temperature plasma activated solution, energy consumption is low, operation is convenient, and production cost is reduced effectively.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES +1
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