365results about How to "No biological toxicity" patented technology

The present invention is oil-containing sludge treating process, which includes one concentrating treatment step, one flocculating and centrifugally dewatering step and one drying step. The settled and concentrated sludge is discharged to the concentrated sludge conveying pipeline while flocculant is added for mixing with the concentrated sludge to react, and the flocculated sludge is dewatered in a centrifugally dewatering machine and dried in a steam jetting sludge treating system, with the dried sludge being further utilized externally. The process includes also one odorous material fixing and eliminating step. The process has high treating effect, universality, no secondary pollution, capacity of recovering petroleum resource, low power consumption, low running cost and other advantages.

The invention discloses a multi-channel micro-fluidic chip and mass spectrum combined device. The multi-channel micro-fluidic chip and mass spectrum combined device comprises a micro-fluidic chip and an electric spraying mass spectrometer. The micro-fluidic chip is provided with a plurality of micro channels which are connected in parallel, and the outlet of each micro channel is communicated with a chamber. Each chamber is communicated with a main channel, and the other end of each main channel is a waste liquid outlet. One end of each main channel is close to a chamber and is communicated with a side channel, and the free end of the side channel is an extraction agent inlet. Height difference exists between the side channel and the main channel, and the upper rim of the side channel is arranged on the lower portion of the upper rim of the main channel. Sample outlets are communicated with sample outlet pipes respectively, wherein the outlets of the sample outlet pipes are arranged above the electric spraying device, and liquid drops generated by the electric spraying device is detected by the electric spraying mass spectrometer. A plurality groups of experiments can be simultaneously conducted by the multi-channel micro-fluidic chip and mass spectrum combined device, and real-time mass spectrum detection can be conducted after on-line sample pretreatment is conducted in the micro-fluidic chip.

The invention discloses a drilling fluid and a preparation method thereof. The drilling fluid comprises, by weight, 2.0 to 6.0 parts of bentonite, 0.1 to 1 part of sodium carboxymethylcellulose, 0.2 to 0.8 part of a zwitter-ion sulphonate copolymer, 0.03 to 0.4 part of sodium hydroxide, 0.1 to 0.8 of a polyamine polymer, and 100 parts of water; the polyamine polymer is a polymer of terminal diamine, a cyclic ether, and an epoxy alkyl halide. The preparation method comprises following steps: the polyamine polymer is prepared firstly, wherein the polyamine polymer is prepared via copolymerization of terminal diamine, the cyclic ether, and the epoxy alkyl halide; and then an aqueous solution containing bentonite, sodium carboxymethylcellulose, the zwitter-ion sulphonate copolymer, sodium hydroxide, the polyamine polymer, and water is prepared according to the stoichiometric ratio so as to obtain the drilling fluid. The drilling fluid is excellent in system inhibition performance and collapse resistance, and contains no sylvite, so that subsequent processing on high salt content is unnecessary.

The invention discloses a preparation method of innoxious negative ion aqueous polyurethane, and aqueous polyurethane prepared by the method. The method comprises the following steps: mixing dicyclohexyl methane diisocyanate and aliphatic diol according to a mol ratio of 2.5 to 4; carrying out reaction for 3 to 5 hours at 70 to 90 DEG C to obtain performed polymers; adding dimethylolbutyric acid with hydrophilic groups for taking the reaction for 3 to 5 hours; adding KOH water solution for emulsifying dispersion; and dripping diamine chain extenders for extending chains to obtain aqueous polyurethane latex emulsion. The invention adopts the aliphatic diisocyanate dicyclohexyl methane diisocyanate resin and the aliphatic polymeric diol, does not contain organic solvents such as NMP, acetone and the like often used for preparing the aqueous polyurethane, and does not contain common use neutralizing agents such as triethylamine and the like. The completely innoxious polyurethane material can be prepared, and the invention can be widely used in the fields of medical and health, food and household articles.

The invention relates the method for preparing rich silver antibiotic film used for medical pyrolytic carbon and TiN film. It solves the antibiosis question. The method comprises the following steps: on the pyrolytic carbon: a buffing and cleaning; b evacuating; c sputtering and cleaning for 5 minutes with 1keV nitrogen ion; d injecting silver ion: 70, 30keV energy, 2-8mA beam current, 2X1014/cm2-3X1014/cm2 dosage, and forming rich silver antibiotic film and antibiosis ratio being 100%; on TiN film: a buffing and cleaning; b evacuating; c sputtering and cleaning for 5 minutes with 1keV nitrogen ion; d sputtering Ti target with 3keV, 80mA Ar+ ion, 20-40keV, beam current: bombarding with 2-8mA high-energy N+ ion for 10-20 minutes; 50-350eV, beam current: bombarding with 10-30mA low-energy N+ ion for 60-180 minutes to deposit, N2 air pressure being 8X10 3Pa; e injecting silver ion: 30-80keV, beam current: 2-8mA, 1X1017/cm2-5X1018/cm2 dosage, forming rich silver antibiotic film and antibiosis ratio being 90%. The film has the advantages of good abradability, strong adhesive force and anti-corrosion, good cell compatibility and long antibiosis time-effect. The film can be used to prepare artificial heart valve and hard tissue alternate material which is implanted in human.

The invention discloses a PVA (polyvinyl alcohol) composite aquagel with bioactivity and a preparation method thereof. The preparation method comprises the following steps: mixing a PVA water solution and a PEO (polyoxyethylene) solution, adding a Ca-ethanol suspension or calcium ethoxide solution, adding anhydrous alcohol containing H3PO4, freezing, and defreezing to obtain the PVA composite aquagel with bioactivity. The invention has the advantages of no biotoxicity of raw materials, low cost, mild reaction conditions, and safe and simple technique, and satisfies the environmental requirements; high number-average molecular weight PEO with favorable biocompatibility and lubricating property is introduced into a nano HA/PVA composite aquagel, so the high number-average molecular weight PEO molecular chain forms polymer brushes on the aquagel surface to lower the friction force of the aquagel surface; and thus, the material can be conveniently applied to joint prosthesis cartilage replacement materials.

The invention discloses a process for preparing polymeric ferric chloride from acid waste liquid, which consists of charging hydrochloric acid waste liquid, concentrated nitric acid and hydrochloric acid into corrosion-resisting reactors, letting in oxygen under 1.0-3.0 normal atmosphere, controlling the temperature between 50-120 deg. C, and reacting 40-90 minutes.

The invention discloses a leaching agent used for restoration of petroleum hydrocarbon polluted soil, and a preparation method and an application thereof. The leaching agent is mainly composed of a biosurfactant and sodium salt, the materials are dissolved with water, and the leaching agent is prepared, the total concentration of the leaching agent is 50-1000 g/L. The leaching agent is used for processing petroleum hydrocarbon polluted soil, and has good petroleum hydrocarbon removal effect, a removal rate of the petroleum hydrocarbon in the soil can reach 90-98%, the leaching agent has biocompatibility, realizes biodegradation in the soil, cannot generate secondary pollution for environment, and has a wide application prospect in the fields of environment restoration.

The invention relates to a reversible emulsifier and a preparation method thereof, and an environment-friendly reversible emulsifying drilling liquid and application. The reversible emulsifier is prepared from the following raw materials: initial raw materials: C10-C20 alkyl primary amine, C10-C20 alkyl sulfonic acid, perfluorooctane sulfonate and chloroacetic acid; additives: isopropanol, peregal O-15, and peregal O-8. The environment-friendly reversible emulsifying drilling liquid is prepared by the following steps of stirring an oil phase, the reversible emulsifier and a water phase at high speed, adding alcohols with carbon number less than 4, straight-chain alcohols with carbon number of 8 to 14, quaternary ammonium salt-modified organobentonite, humic acid filtrate loss reducer, calcium oxide and choline chloride, and then adding weighing material, so as to reach the required density of the drilling liquid. The invention also provides a phase transfer method of the reversible emulsifying drilling liquid. The phase transfer method has the advantages that according to production requirements, the phases of the drilling liquid can be conveniently transferred, and the drilling liquid is stable under the two states of W/O (water/oil), and O/W (oil/water), and can be repeatedly used.

The invention discloses a biochar-loaded nano zero-valent iron material and an application thereof. A preparation method of the zero-valent iron material comprises the steps: 1, crushing biomass, andcarrying out primary chemical modification to obtain modified biomass; 2, in a nitrogen atmosphere, firstly heating a pyrolyzing furnace to 450-550 DEG C, then putting the modified biomass into the pyrolyzing furnace, pyrolyzing, and then heating to 650-750 DEG C at an average speed of 2-3 DEG C/min to obtain biochar; 3, carrying out deep chemical modification on the biochar to obtain modified biochar; 4, uniformly mixing absolute ethyl alcohol, ferrite, ultrapure water and the modified biochar to obtain a suspension; and 5, in a nitrogen atmosphere, dropwise adding a reducing agent into the suspension to reduce ferrous ions, and after dropwise adding is completed, carrying out an aging reaction for 0.5-1 h to obtain the biomass-loaded nano zero-valent iron material. The zero-valent iron material is prepared by adopting modification and variable-temperature calcination modes, so that the performance of the zero-valent iron material is greatly improved, the zero-valent iron material canbe used for removing selenium elements in desulfurization wastewater, and the removal effect on selenite is mainly better.

The invention relates to a polylactic acid-hydroxyapatite whisker compound porous scaffold for bone tissue engineering and a preparation method thereof, and belongs to the field of biomedical material technique application. The compound porous scaffold is prepared from, by weight, 0.5%-50% of hydroxyapatite whiskers and 50%-99.5% of polylactic acid. The compound porous scaffold is prepared by adopting a solvent casting-vacuum volatilizing-particle leaching method, the technology is simple, operation is convenient, and the yield is stable; according to the prepared compound porous scaffold, the porosity is 45.8%-91.1%, the diameter of irregular straight-through holes is 50-600 micrometers, the compressive strength is 1.2-19.1 MPa, the cell toxicity is qualified, and the good clinical application prospect is achieved.

The invention provides a preparation method of carbon quantum dots based on a chemical reaction of fructose and sodium hydroxide, and belongs to the technical field of nanomaterials. The method comprises a first step of preparing a D-fructose solution; a second step of preparing a sodium hydroxide solution; a third step of mixing the D-fructose solution with sodium hydroxide solution; and a fourth step of standing the mixed solution to obtain a carbon quantum dot solution. The preparation method is simple and economic, is easy to operate, and has extremely low energy consumption. The prepared carbon quantum dots have high fluorescent intensity, can transform ultraviolet light to green visible light, have no biological toxicity and no pollutions to the environment, and have great application potentiality in in improving conversion efficiency of solar cells and in the fields of biological labels, biological medicine and the like.

The invention relates to the field of drilling fluid and discloses a micron-nano plugging anti-sloughing drilling fluid, and a preparation method and an application thereof. The drilling fluid contains water, bentonite, a fluid loss agent, an anti-sloughing agent, a nano-plugging agent, and a weighting agent, wherein the anti-sloughing agent is selected from one or more of modified asphalt, CaCO3powder and nano paraffin emulsion, the CaCO3 powder being 400-mesh and 1250-mesh. The D50 (particle size mid-value) of the nano paraffin emulsion is 6.5 [mu]m; the nano-plugging agent is surface-modified nano-carbon powder, average particle size being 30-85 nm. The drilling fluid, when being applied to carbonatite fractured formation well drilling of fracture zones in deep and super-deep wells, can effectively improve the collapse pressure of the fractured formation and is high-effective in plugging and anti-sloughing effect.

The invention provides a preparation method of carbon quantum dots based on atmospheric pressure micro-plasma technology. The method comprises a first step of preparing a D-fructose solution; a second step of preparing a solution of sodium hydroxide, or sodium bicarbonate potassium or dihydrogen phosphate; a third step of mixing the D-fructose solution with the solution of sodium hydroxide, or sodium bicarbonate potassium or dihydrogen phosphate; and a fourth step of performing atmospheric pressure micro-plasma electro discharge treatment on the mixed solution to obtain a carbon quantum dot solution. The preparation method is simple and economic, is easy to operate, and has extremely low energy consumption. The prepared carbon quantum dots have high fluorescent intensity, can transform ultraviolet light to blue visible light, have no biological toxicity and no pollutions to the environment, and have great application potentiality in improving conversion efficiency of solar cells and in the fields of biological labels, biological medicine and the like.

The invention provides polyether amine alkyl glycoside with the structure as shown in the formula I; in the formula I, m is 1 to 16, n is 1 to 3, R1 is alkyl of which the carbon atomic number is 1 to 10 and R2 is methyl or ethyl. The invention provides a preparation method of polyether amine alkyl glycoside adopting the technical solution; the method comprises the following steps: reacting chlorinated epoxides, dihydric alcohol compounds, water and acid catalysts to obtain a reaction product; reacting the reaction product with organic amine to obtain an intermediate product; reacting the intermediate product with alkyl glycoside to obtain polyether amine alkyl glycoside. The polyether amine alkyl glycoside provided by the invention is good in inhibition performances and lubrication performances and can be applied to drilling fluid. Polyether amine alkyl glycoside is added in the drilling fluid, so that the problems of easy sloughing formation of strong water-sensitive shale, sandstone-mudstone interbedding and basalt-mudstone interbedding and the like can be solved by the drilling fluid. The polyether amine alkyl glycoside is suitable for well drilling construction of a shale gas horizontal well.

The invention discloses a preparation method of a material with nitric oxide (NO) catalytic activity. The preparation method is implemented through the steps that a selenium-containing compound with nitric oxide catalytic activity, a sulfur-containing compound, a soluble copper salt, a compound with an o-phenol structure, a flavonoid compound, and a flavonol compound or a flavanone compound are mixed in a buffer solution and then polymerized. The material with NO catalytic activity not only can be applied to the surface modification of materials which are different in material, geometrical shape and topological structure, and also can be used as a filling material for a controlled release system. Double selenium bonds, double sulfur bonds, copper ions and phenolic hydroxyl groups, which are contained in the prepared material with nitric oxide (NO) catalytic activity, have an excellent free radical removal function; the selenium bonds, the sulfur bonds and the chelate copper ions, which are contained in the material, also have a reduced glutathione (GSH) response function; in addition, the copper ions containing in the material also have an antibacterial function; and the material, besides being used for catalyzing NO release, also can be applied to all related fields of free radical removal and GSH response function.

The invention relates to the technical field of fire extinguishing agents, in particular to a fire extinguishing agent composition, and a preparation method and application thereof. The fire extinguishing agent composition comprises an organic silicon surfactant, a hydrocarbon surfactant, an organic cosolvent, a foam additive and the like. The foam extinguishing agent has main advantages of not containing a fluorocarbon surfactant, and a polyether modified polysiloxane type organic silicon surfactant and/or a polyether trisiloxane organic silicon surfactant are/is used; on the basis of environmental protection, a compound of an anionic hydrocarbon surfactant, a nonionic hydrocarbon surfactant and an amphoteric hydrocarbon surfactant is adopted for compounding, so that better foam performance and fire extinguishing performance can be achieved; through joint adjustment and dosage matching of multiple components, low surface tension, good foaming performance and foam stabilizing performance and efficient fire extinguishing performance are achieved, and the defect that foaming performance and foam stabilizing performance of an organosilicon surfactant is relatively poor is overcome. .The fire extinguishing agent composition can achieve spreading boundary on an oil surface, can be degraded easily, is environmentally friendly, and is often applied to extinguishing oil fire.

The invention relates to a medical beta-titanium alloy composite material with osteogenesis inducting activity and a preparation method thereof. The material comprises a base material and a titanium oxide nano-tube array layer, which is generated in-situ and attached to the surface of the base material and contains BMP-2 cell growth factors. The base material is a medical beta-titanium alloy of the Ti-25Nb-6Zr-xMo family, wherein the x is between 2 and 5. The diameters of nano-tubes, which are generated in-situ on the alloy surface, are between 30 and 50 nm, the lengths of the nano-tubes are between 200 and 300 nm, and the nano-tubes are arranged in arrays and perpendicular to the surface of the titanium alloy. The medical beta-titanium alloy composite material has ultra-low elastic modulus and is capable of forming better interface mechanic matching with the bone tissue. So osteoblasts grow rapidly along the wall on the surface of medical beita-titanium alloy whose surface is loaded with titanium oxide nano-tube biological composite material containing BMP-2, and proliferate obviously. The composite material has a good effect on inducing osteoblasts to proliferate to form bone matrix and can be used to bone replacement or repairing.

The invention belongs to the technical field of wastewater environmental-protection treatment, and particularly relates to a microorganism water treatment agent for heavy metal organic wastewater. The microorganism water treatment agent is prepared from the following raw materials: oyster shells, potassium feldspar, olivine, talc, serpentine, chlorite, attapulgite, ammonium molybdate modified bentonite, diatomaceous earth, aluminium polychlorid, magnesium hydrate, gram-negative bacteria, Bacillus mojavensis, polyacrylamide, tartaric acid, malic acid, citric acid, chitosan, ethylene glycol diglycidyl ether, epoxy chloropropane, thiosemicarbazide cellulose, corn starch, calcium alginate, hansenula polymorpha, candida, trailing plant, fagus longipetiolata sawdust, pinus sylvestris sawdust, walnut shell, lupulus, dehalogenase, horseradish peroxidase, urease and propionibacterium pentosaceum. A precipitate (alum floc) produced after treatment with the microorganism water treatment agent has good strippability, no solid particle is released into water basically, and the microorganism water treatment agent has rapid action speed and stable treatment effect, so that the adsorption time is usually not required to be prolonged during use.

The invention relates to a preparation method of a graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier and belongs to the technical field of water treatment in environmental engineering. The preparation method comprises the following steps: preparing a graphene oxide modified polyurethane foam composite material from a hydroxyl-containing macroporous foam material at the room temperature by virtue of a physical adsorption method, and aminating the composite material until graphene oxide and polyurethane foam contain a certain amount of primary amine; and reacting by virtue of an anthraquinone compound containing sulfonyl chloride groups with primary amine, so as to fix a quinone compound, wherein the hydroxyl-containing macroporous foam material can be polyvinyl alcohol foam or polyvinyl alcohol doped polyurethane foam and the like. According to the preparation method, the quinone compound and graphene oxide are simultaneously fixed to the surface of the macroporous foam material, so that the contact among a redox mediator, graphene and microorganisms is facilitated; and the technical bottlenecks that graphene and the water soluble quinone compound in a water treatment system are difficult to be recycled and flow out along with water to cause secondary pollution are solved.

The invention discloses a super-light resistive random access memory and a preparation method thereof. The super-light resistive random access memory comprises a metal thin-film electrode; a first silk protein film and a second silk protein film cover an upper layer and a lower layer of the metal thin-film electrode respectively; and a silver thin-film electrode covers the first silk protein film. The light silk protein is used as a substrate and is also used as a resistive material, so that the resistive random access memory with the mass per unit area of 4mg/cm<2> can be obtained; and the mass per unit area of the resistive random access memory is smaller than that of the silicon-substrate-based traditional resistive random access memory by over 320 times and is smaller than that of the common A4 paper by over 20 times.