37results about How to "Reach friendly" patented technology

The present invention relates to a mesopore solid alkali and functional material. It is a mesopore silicon molecular sieve containing rare earth metal or transition metal atom and whose grain size is 4-10 nm, and has the mesopore silicon molecular sieve with alkali strength of 9.3-22.5. Said invented mesopore solid alkali and functional material can be used as cigarette additive capable of reducing nitrosamine content in the cigarettes smoke, and the total content of nitroso compound in the fire holding capacity of cigarette can be reduced by 30-47%.

The invention aims at providing a method for preparing colorless imidazole ion liquid. The colorless imidazole ion liquid is 1-alkyl-3-methyl imidazole bromine, and a general formula of the ion liquid is as above. The preparation method uses water as solvent, thereby reducing the use of organic solvent and achieving the goal of being friendly to the environment. Under the protection of nitrogen, a reaction product is dissolved in water to remove brominated alkane which does not react at an underlayer for recycling; and the water in the reaction product and the residual brominated alkane are removed by decompressing and distilling to obtain the colorless 1-alkyl-3-methyl imidazole bromine ion liquid. A reaction mixture is colorless during the whole reaction process, the obtained product of the imidazole ion liquid is also colorless, and subsequent decolorization and purification treatment is not required, thereby greatly reducing the nondeterminacy and the limit of the ion liquid in the application.

The invention relates to a stabilizer for heavy metal compound contaminated soil and a preparation method of the stabilizer for heavy metal compound contaminated soil. The stabilizer comprises sulfide, shell powder and red mud, wherein the molar ratio of the sulfide to effective-state gross of heavy metals lead, zinc and cadmium is 1.5 to 6; the molar ratio of the shell powder to the effective-state gross of heavy metals lead, zinc and cadmium is 1-4; and the red mud is added in a molar ratio of the content of iron in the red mud to the effective-state content of arsenic in soil of 2-8. The preparation method of the stabilizer comprises the following steps: drying the red mud by airing, grinding and sieving the dried red mud; then, cleaning the shell powder, grinding and sieving after drying by air; and preparing the sulfide into an aqueous solution, thereby obtaining the stabilizer. Based on the effective-state content of the heavy metals in the soil, the content of each component is reasonably prepared, so that the stabilizer can be applicable to compound contaminated soil with high leaching concentration, can be used for effectively reducing the leaching concentration of heavy metals in the soil and overcoming the defect of poor stabilization effects of the existing medicament, and has a certain application value.

The invention discloses a rapid environment-friendly heavy soil metal pollution treatment and purification system. The system comprises a screen-replaceable rotary screen, a hydrocyclone, a sprinkling stirring tank, a reaction tank, a sedimentation basin, a regulating reservoir reaction region, a regulating reservoir storage region and a plate-and-frame filter press. The screen-replaceable rotary screen, the hydrocyclone, the sprinkling stirring tank, the reaction tank, the sedimentation basin, the regulating reservoir reaction region and the regulating reservoir storage region are sequentially connected. The regulating reservoir storage region is connected with the sprinkling stirring tank. The reaction tank and the sedimentation basin are connected with the plate-and-frame filter press. A backflow channel is arranged between the hydrocyclone and the screen-replaceable rotary screen. The system has the beneficial effects of being high in efficiency, quick, environmentally friendly, capable of achieving engineering treatment easily and the like, the purification effect on soil with heavy metal pollution and work efficiency can be remarkably improved, no wastewater is drained from the whole system, the environment-friendly benefit is achieved, the important technique and equipment are provided for heavy soil metal pollution restoration work of China, and social and environmental benefits are remarkable.

The invention relates to the field of biomedical bacteria resistance. A biomedical silicon rubber with an antibacterial property is prepared through the following steps: adding 50-80 weight parts of liquid silicon rubber into a beaker and stirring the liquid silicon rubber for 10 min; putting 5 parts of a graphene quantum dot coated nanosilver antibacterial agent in a 50 ml beaker, and adding 10 parts of a solvent for ultrasonic treatment for 30 min; adding the graphene quantum dot coated nanosilver antibacterial agent prepared in the step 2 into the liquid silicon rubber prepared in the step1 and stirring the mixture for 10 min; adding 1-2 parts of a curing agent into the solution prepared in the step 3 and stirring the solution for 5 min; and vulcanizing the solution by a pressing plateat a room temperature in a plate vulcanizer to obtain the biomedical silicon rubber with the good antibacterial property. The processed and modified silicon rubber has the advantage of continuing thebiocompatibility of conventional silicon rubber, the antibacterial property of the rubber is also improved, and the service time of the silicon rubber in biomedical field is prolonged.

The invention provides a method for simultaneously preparing ferulic acid, xylo-oligosaccharides and ethanol from spent grains. The method comprises the following steps: soaking spent grains in 85 vol.% ethanol to boil for 5 minutes, cooling and filtering twice; washing the filtered spent grains with absolute alcohol and ethylether in turn, drying, grinding, sieving with a 50 meshes of sieve to obtain the ethanol insolubles of spent grains; and then soaking the ethanol insolubles of spent grains in a 0.1mol / L NaOH solution, performing microwave treatment, centrifuging, then using feruloyl esterase and xylanase to treat and obtain ferulic acid and xylo-oligosaccharides, and saccharifying and fermenting the treated ethanol insolubles of spent grains in turn to finally obtain ethanol. By adopting the method, the consumptions of the chemical reagents are low, thus the aim of environmental protection can be realized; and the three main components of wood fiber can be utilized simultaneously.

The invention relates to the field of lubricating grease, in particular to composite lubricating grease for a heavy load bearing and a preparation method thereof. The composite lubricating grease is prepared from the following ingredients in percentage by weight: 99.2 to 99.8 percent of lithium-based lubricating grease and 0.2 to 0.8 percent of micro carbon spheres and nanometer particles. The micro carbon spheres and nanometer particles are uniformly distributed in the lithium-based lubricating grease by using ethanol as carriers. Compared with the existing ordinary lithium-based lubricating grease, the composite lubricating grease prepared after the ethanol evaporation has the advantage that the improvement is realized in aspects of friction heating, friction mark area and the like.

The invention discloses a method for removing phthalate plasticizers from vegetable oil. The method is characterized in that light and heavy molecules are separated according to different average freepaths of the molecules by adjusting and controlling distillation temperature, vacuum degree, film scraping speed, feeding speed and the like, so as to achieve the effect of removing the plasticizers.The method has the characteristics of environmental friendliness, simple process, convenience in operation, short period, high production efficiency and the like, and can be used for effectively removing the phthalate plasticizers exceeding the standard in the vegetable oil to obtain a safe and healthy vegetable oil product meeting the edible requirements.

The invention belongs to the field of materials, and relates to a net-shaped structure precursor and composite oxide powder as well as a preparation method and application thereof. The net-shaped structure precursor comprises a loose core and a loose shell layer coating the surface of the loose core, the main component of the loose core is divalent nickel-cobalt-manganese composite hydroxide, themain component of the loose shell layer is trivalent nickel-cobalt-manganese composite hydroxide, and the particle size of the nickel-cobalt-manganese net-shaped structure precursor is 2-30 [mu] m. According to a lithium ion battery corresponding to the net-shaped structure precursor, under the condition of low temperature (-10 DEG C), the first charge-discharge efficiency of 0.2 C is greater thanor equal to 95%, the first charge-discharge efficiency of 10C is greater than or equal to 92%, the low-temperature power performance can be improved, and a great industrial application prospect is achieved.

The invention discloses a zinc-aluminum alloy surface treatment process. The zinc-aluminum alloy surface treatment process comprises the following steps that (1) an alloy base body is polished; (2) surface cleaning is performed on the polished alloy base body; (3) the workpiece subjected to surface cleaning is transferred into a vacuum furnace, air pumping is performed until a vacuum furnace bodyis vacuumed, then glow cleaning or ion source cleaning is performed, then sequentially magnetron sputtering is adopted to deposit a transition layer, and reaction sputtering is adopted to deposit a color decoration layer; (4) the workpiece is transferred into an oven or a powder spraying line for heating and heat preservation; and (5) thermosetting transparent powder is arranged on the surface ofthe workpiece in an electrostatic spraying mode, and curing treatment is performed to form a surface decoration coating. According to the zinc-aluminum alloy surface treatment process, vacuum coatingand powder spraying are combined, thermosetting transparent powder electrostatic spraying is performed on the high-temperature base body, so that good appearance decoration and performance are achieved on the surface of the alloy base body, meanwhile, the process is easy to control, the production process is stable, the yield is high, and the requirements of no wastewater discharge can be met.

The invention discloses a self-driven ulothrix culturing device, comprising a reaction chamber, wherein a carbon producing plate is arranged at the bottom of the reaction chamber; an enrichment plate is hung on the middle part of the reaction chamber; resistance or a low-power electric appliance is arranged on the top of the reaction chamber; the carbon producing plate and the enrichment plate are connected with the resistance through a lead. Air, water and sediment are respectively arranged in the reaction chamber from top to bottom; the carbon producing plate is buried in the sediment; the enrichment plate is hung or floats on the water; the cultured ulothrix is inoculated in the water body of an enrichment layer. By utilizing the self-driven ulothrix culturing device and the cultural method thereof, the electric energy and the chemical energy which are produced when a microorganism oxidizes the sediment are used for culturing and producing the ulothrix by the carbon plate; inorganic carbon produced by sediment decomposing is supplied to ulothrix for growth by an electrochemical system. According to the self-driven ulothrix culturing device and the cultural method thereof, the additional energy is not needed, the produced ulothrix can be used for producing food, feed, cosmetic and pharmaceutical industry; no exhaust gas and waste are discharged during the cultivation process of the ulothrix; the rational utilization of resources and the environmentally friendly effect are realized, and great social and economic value is achieved.

The invention relates to a membrane-process seawater desalination system without pretreatment process. The system comprises a reverse osmosis subsystem used for separating brine at an inlet into freshwater and strong brine; a pressure damping osmosis and hot-membrane osmosis subsystem used for supplementing water and heating the strong brine at an outlet of the reverse osmosis subsystem and returning to the inlet of the reverse osmosis subsystem to realize stepped supplemented water circulation; and an organic Rankine cycle subsystem used for providing exchange heat for the pressure damping osmosis and hot-membrane osmosis subsystem. The pressure damping osmosis and hot-membrane osmosis subsystem comprises a forward osmosis membrane element, a porous membrane element and a deep sea seawater introducing mechanism. The reverse osmosis subsystem, the forward osmosis membrane element, the porous membrane element and the organic Rankine cycle subsystem are successively connected. The deepsea seawater introducing mechanism and the forward osmosis membrane element are connected. A salinity and water temperature measuring point is arranged at the outlet of the porous membrane element. incomparison with the prior art, the invention has the following beneficial effect: by stepped water supplementation for strong brine at the outlet of the reverse osmosis subsystem, recycling of strongbrine is achieved, and then investment and operation costs are reduced.

The invention belongs to the field of materials, and relates to lithium manganate and a preparation method and application thereof. The preparation method of the lithium manganate comprises the following steps: preparing metal salt into a metal salt solution with the conductivity of more than or equal to 200uS / cm, and then carrying out chemical corrosion crystallization reaction on manganese metalelementary substance and / or manganese metal oxide, a doping agent, an oxidant, water, an ammonia-containing solution and the metal salt solution under the conditions that the oxidation-reduction potential ORP value is less than or equal to -100mv, the complexing agent concentration is 3-50g / L and the conductivity is more than 200uS / cm; and sequentially carrying out magnetic separation, solid-liquid separation, washing and drying, mixing with a lithium source, and calcining. When the method provided by the invention is used for preparing the lithium manganate, no wastewater is generated in thedissolving and crystallizing process, and water is continuously consumed, so that the purpose of environmental friendliness can be achieved, and the obtained lithium manganate is used as a lithium ion battery positive electrode material, so that the gram capacity and the cycling stability of a lithium ion battery can be improved, and the method has a great industrial application prospect.

The invention relates to a preparation method of a bifunctional material SnSe1-xSx, which comprises the following steps: sufficiently reacting SnCl2. 2H2O and NaOH in deionized water according to a molar ratio of 1:10, and stirring in an argon atmosphere to obtain a solution A; preparing a solution B according to the molar ratio of Se to NaBH4 of 1:2.6 in advance; dissolving a certain amount of Na2S.9H2O in a certain amount of water to obtain a solution C; mixing B and C, injecting into the solution A, keeping the stirring speed, and reacting at the boiling temperature; and after the reaction is stopped and cooled, centrifugally collecting, and drying on a freeze dryer to obtain the SnSe1-xSx bifunctional material. The controllable preparation of the nanoscale SnSe1-xSx material is realized, and the electrochemical and thermoelectric properties of the material are optimized at the same time.

The invention relates to the field of biomedical antibacterial. A kind of biomedical silicone rubber with antibacterial property, by weight, 50-80 parts of liquid silicone rubber is added in the beaker, stirred for 10min; 5 parts of graphene quantum dot-coated nano-silver antibacterial agents are placed in the 50ml beaker, and Add 10 parts of solvent, ultrasonic for 30min; add the graphene quantum dot coated nano-silver antibacterial agent solution prepared in step 2 to the liquid silicone rubber prepared in step 1, and stir for 10min; add 1-2 parts to the solution prepared in step 3 Curing agent, stirred for 5 minutes; in a flat vulcanizer, press vulcanized at room temperature to obtain biomedical silicone rubber with good antibacterial properties. The modified silicone rubber not only continues the advantages of traditional silicone rubber biocompatibility, but also improves the antibacterial properties of rubber and prolongs the use time of silicone rubber in biomedicine.

The invention relates to a special humic acid type compound fertilizer for broad beans. The compound fertilizer is prepared from the following raw materials in percentage by weight: 60-80% of a bio-char organic fertilizer matrix, 2-6% of urea, 12-25% of monoammonium phosphate, 3-5% of potassium sulphate, 2.5-4.5% of calcium superphosphate and 0.005-0.015% of microelements. The compound fertilizer provided by the invention not only can be used as nutritional elements required in the full growth period of broad beans, but also can provide sufficient humus to the soil, so that the soil structure is improved.

The invention relates to a stabilizer for heavy metal compound contaminated soil and a preparation method of the stabilizer for heavy metal compound contaminated soil. The stabilizer comprises sulfide, shell powder and red mud, wherein the molar ratio of the sulfide to effective-state gross of heavy metals lead, zinc and cadmium is 1.5 to 6; the molar ratio of the shell powder to the effective-state gross of heavy metals lead, zinc and cadmium is 1-4; and the red mud is added in a molar ratio of the content of iron in the red mud to the effective-state content of arsenic in soil of 2-8. The preparation method of the stabilizer comprises the following steps: drying the red mud by airing, grinding and sieving the dried red mud; then, cleaning the shell powder, grinding and sieving after drying by air; and preparing the sulfide into an aqueous solution, thereby obtaining the stabilizer. Based on the effective-state content of the heavy metals in the soil, the content of each component is reasonably prepared, so that the stabilizer can be applicable to compound contaminated soil with high leaching concentration, can be used for effectively reducing the leaching concentration of heavy metals in the soil and overcoming the defect of poor stabilization effects of the existing medicament, and has a certain application value.

The invention discloses an intumescent flame retardant and a preparation method and application thereof. The intumescent flame retardant is prepared from the following raw materials in parts by weight: 4-6 parts of modified ammonium polyphosphate, 3-4 parts of hyperbranched polyester, 0-1 part of polyvinyl alcohol and 45-50 parts of absolute ethanol. The hyperbranched polyester in the intumescentflame retardant serves as a char forming agent and also a film forming agent. The invention provides the application of the intumescent flame retardant in engineering plastics, and during application,the surface of the engineering plastics is treated by magnetron sputtering, surface energy can be improved without the need of complicated surface wetting agents or chemical deposition treatment, theintumescent flame retardant is easy to coat and the adhesive force reaches grade 5B. The hyperbranched polyester in the fire retardant has excellent char forming property, improves the adhesion firmness of the coating and also achieves excellent flame retardant effects; and the limit oxygen index LOI on polypropylene reaches 32% and reaches grade V0 in a UL-94 test, and the coating has excellentflexibility, can adapt to deformation of a matrix without falling and has wide applicable environments.

The invention belongs to the technical field of preparation of lubricating grease and in particular relates to a carbon microsphere copper-silver alloy, modified lubricating grease, a preparation method and application. Glucose is used as a carbon source and is subjected to hydrothermal synthesis to reduce copper and silver in situ, so as to prepare the copper-silver alloy; the copper-silver alloyis used as an additive and is attached to a carbon microsphere to obtain the carbon microsphere copper-silver alloy; the carbon microsphere copper-silver alloy is used as an additive to prepare lithium-based lubricating grease, so that novel modified lithium-based lubricating grease is obtained; the modified lithium-based lubricating grease contains microsphere-shaped structures including the carbon microsphere, metal nanoparticles and the like, and has an excellent self-lubricating property and an ultralow friction property; the lubrication performance of a system can be improved and the anti-wear and friction reduction performance of the modified lubricating grease is more excellent, so that the service life of a part is prolonged. Compared with existing lithium-based lubricating grease, the modified lubricating grease has the advantages that the anti-wear performance and the friction reduction performance are greatly improved.

The invention belongs to the field of materials, and relates to a lithium manganate and its preparation method and application. The preparation method of the lithium manganate comprises preparing a metal salt into a metal salt solution with a conductivity ≥ 200uS / cm, and then adding manganese metal element and / or manganese metal oxide, dopant, oxidant, water, ammonia solution, The metal salt solution undergoes chemical corrosion and crystallization reaction under the conditions of oxidation-reduction potential ORP value ≤-100mv, complexing agent concentration of 3-50g / L, and electrical conductivity ≥200uS / cm, followed by magnetic separation, solid-liquid separation, and washing Calcined after drying and mixing with lithium source. Adopt the method provided by the present invention to prepare lithium manganate, dissolving and crystallizing process does not produce waste water, and consumes water constantly, thereby can achieve the purpose of being friendly to the environment, and use lithium manganate thus obtained as lithium ion battery cathode material, can also improve The gram capacity and cycle stability of lithium-ion batteries have great industrial application prospects.

The invention provides a method used for preventing galangal post-harvest mildewing. The method used for preventing galangal post-harvest mildewing comprises the following steps of cutting freshly harvested galangal into segments, carrying out treatment by using a freshness-keeping agent, and carrying out first drying; carrying out slicing, carrying out treatment by using a mould inhibitor, and carrying out second drying until the galangal slices are thoroughly dried. Post-harvest mildewing of galangal treated by the method can be inhibited to the maximum extent; moreover, the method is safe,non-toxic, convenient to use, and simple in processes.

The invention discloses a zinc-aluminum alloy surface treatment process, which comprises the steps of: (1) polishing the alloy substrate; (2) cleaning the surface of the polished alloy substrate; (3) transferring the surface-cleaned workpiece into In the vacuum furnace, after evacuating to the background vacuum, perform glow cleaning or ion source cleaning, and then sequentially use magnetron sputtering to deposit the transition layer, and use reactive sputtering to deposit the color decoration layer; (4) transfer the workpiece into the oven Or heat and keep warm on the powder spraying line; (5) Electrostatically spray thermosetting transparent powder on the surface of the workpiece, and form a surface decorative coating after curing. The invention combines vacuum coating and powder spraying, and carries out electrostatic spraying of thermosetting transparent powder on the surface of the alloy substrate to achieve good appearance decoration and performance. At the same time, the process is easy to control, the production process is stable, and the yield rate is high. There is no requirement for waste water discharge.

The invention belongs to the field of materials, and relates to a network structure precursor and composite oxide powder, a preparation method and application thereof. The precursor of the network structure includes a loose inner core and a loose outer shell covering the surface of the loose inner core. The main component of the loose inner core is divalent nickel-cobalt-manganese composite hydroxide, and the main component of the loose outer shell is three A nickel-cobalt-manganese composite hydroxide, and the particle size of the nickel-cobalt-manganese network structure precursor is 2-30 μm. The lithium-ion battery corresponding to the precursor of the network structure provided by the present invention has a first-time charge-discharge efficiency of ≥95% at 0.2C and a first-time charge-discharge efficiency of ≥92% at 10C under low temperature (‑10°C) conditions, which can improve low-temperature power performance , with great industrial application prospects.

The invention relates to a method for treating phenol wastewater. The method comprises: (1) a step of vaporizing phenol waste water with heat energy provided by a solar concentrating heat collection device to form phenol water vapor; and (2) a step of electrolytically oxidizing the phenol water vapor with electric energy provided by a photovoltaic cell . The present invention realizes the degradation of vapor state phenol for the first time, and degrades phenol in the vapor phase to achieve an ideal degradation rate of phenol; in addition, the activated molecules in the excited state with high energy content can undergo less intermediate incomplete oxidation The products are oxidized to carbon dioxide and water with simultaneous production of hydrogen. The invention does not introduce any other form of energy during the electrolysis period, realizes the utilization of the full spectrum of solar energy, breaks the limitation of the traditional photovoltaic method on the utilization of sunlight, truly achieves the purpose of environmental friendliness, and realizes on the basis of energy saving The degradation of phenol wastewater is achieved, which provides a new direction for the green and efficient treatment of industrial organic wastewater.

A mesoporous solid alkali and functional material, characterized by mesoporous silicon molecular sieves containing rare earth metal or transition metal atoms, with a pore diameter of 4-10 nm, and a mesoporous silicon molecular sieve with an alkali strength of 9.3-22.5. The mesoporous solid base and functional material of the invention can be used as shredded tobacco additives for reducing the content of nitrosamines in cigarette smoke. After adding the mesoporous solid alkali and functional material of the invention to shredded tobacco, the total content of nitroso compounds in the smoldering smoke of cigarettes is reduced by 30-47%. The invention discloses its preparation method.

The invention provides a method for increasing the content of urease and phosphatase in farmland. This method is the first to spray a specific amount of potato and / or sweet potato starch processing wastewater on the farmland after soil preparation and furrowing, and perform deep plowing on the farmland after spraying potato and / or sweet potato starch processing wastewater. It is found that the content of urease and phosphatase in the farmland can be significantly increased. Compared with the method of applying inorganic fertilizers, the content of urease and phosphatase in the soil can be increased by at least 25% in this application, and it can be decomposed by urease and phosphatase Transform the organic nitrogen and phosphorus macromolecules in the soil into inorganic salts, promote the absorption of nitrogen, phosphorus and other nutrients by crops, and finally improve the fertilizer utilization rate and soil fertility; at the same time, the farmland treated with this method will increase the yield by at least 20 per mu. More than %, for example, compared with single application of chemical fertilizers (N equal amount), the yield of corn per mu can be increased by 20% to 35%.

The invention provides a method for preventing and treating post-harvest mildew of galangal. The harvested fresh galangal is cut into sections and treated with a preservative, then dried for the first time, and after the slices are treated with a mold inhibitor, then dried for the second time. until completely dry. The galangal treated by the method of the invention can suppress post-harvest mildew to the greatest extent, is safe, non-toxic, convenient to use and simple in process.

The invention provides a method for treating oily sewage through solar STEP photo-thermal-electric coupling, which comprises the following steps of: providing heat energy by using a photo-thermal effect of solar energy, providing electric energy by using a photo-electric effect, and carrying out constant-current electrolysis on the oily sewage in an electrolytic tank with a cathode and an anode; wherein the temperature of the electrolytic tank ranges from 20 DEG C to 90 DEG C, and the current of the constant-current electrolysis ranges from 50 mA to 90 mA. According to the invention, solar energy is used as a green energy source, and under the synergistic effect of solar electrochemistry, photocatalysis and solar heat, on the basis of improving the utilization rate of solar energy, the reaction path of the oil-containing wastewater of the oil field is further optimized, the energy source is saved, and the degradation efficiency of the oil-containing wastewater of the oil field is greatly improved.