37results about How to "Reach friendly" patented technology

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 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 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 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 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 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 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.