12results about How to "Easily biodegradable" patented technology

The invention provides a method for synergistically removing impurities through pH regulation and complexing of ionic rare earth ore leachate, the ionic rare earth ore leachate is stirred and mixed uniformly, a plant polyphenol sulfonic acid derivative complexing agent is added, the complexing agent is prepared through sulfonation, neutralization, concentration and drying by taking gallic acid as a raw material, and the complexing agent can automatically regulate the pH value of the solution and stabilize the pH value at 5.1-5.3; under the condition, phenolic hydroxyl groups, carboxyl groups and sulfonic functional groups in complexing agent molecules preferentially form stable precipitates with impurity ions such as Al < 3 + > and Fe < 3 + > in the leachate, and the complexing effect with rare earth ions (RE < 3 + >) is weak; and after the reaction is completed, carrying out solid-liquid separation to obtain the purified leachate and impurity-containing precipitation slag. The method solves the problem of ammonia nitrogen pollution caused by use of ammonium bicarbonate, ammonia water and other ammonium salts in the traditional process, is a novel method with high impurity removal rate, simple process flow and environmental friendliness, and is suitable for industrial application.

The invention relates to the technical field of aluminum material processing oil, and particularly discloses an environment-friendly residue-free aluminum material processing oil composition and a preparation method thereof. The environment-friendly residue-free aluminum product processing oil composition is prepared from the following raw materials in parts by weight: 60 to 100 parts of polyglycol ether, 2 to 17 parts of synthetic ester, 0.5 to 2.5 parts of antioxidant, 0.1 to 0.5 part of metal corrosion inhibitor and 0.1 to 3 parts of tackifier. The synthetic ester comprises star-shaped complex ester, and the star-shaped complex ester comprises the following raw materials: pentaerythritol, oleic acid, phenylphosphonic acid and boric acid. The environment-friendly residue-free aluminum product processing oil composition disclosed by the invention can be used for forming and processing aluminum products, can effectively inhibit oxidation caused by factors such as high-temperature friction heat and metal catalysis in a cyclic heating process under heavy-load and high-temperature working conditions, can realize almost no residue after aluminum product post-treatment at 540 DEG C, ensures that the surfaces of the aluminum products are bright and free of discoloration, and has the advantages of simple process, low cost and the like. And the subsequent cleaning procedure is omitted.

The present application provides a kind of herbal shoe pad and its preparation method and application, the preparation method includes the following steps: herbal raw material is crushed to obtain herbal short hair, then mixed with chemical fiber, by air laying to obtain cotton-like mixture, then the upper and lower surfaces of cotton-like mixture are attached with non-woven fabric, and the herbal shoe pad is obtained after heat bonding.The herbal shoe pad provided by the present application can make the shoe pad more environmentally friendly in an industrial mass production mode, while also achieving the use of raw herbal state to absorb foot sweat, decompose and dilute odor, achieve uniform structure, controllable thickness, wear-resistant and usable through air laying and heat bonding, and have the characteristics of original ecology, high adsorption and easy degradation.

The application belongs to the technical field of biological control, and specifically discloses a biological control agent for preventing and treating clubroot, and specifically provides application of L-methyll pyroglutamate in any one of inhibiting clubroot spores, preparing a preparation for inhibiting clubroot spores, preventing and treating plant clubroot, and preparing a biological control agent for preventing and treating plant clubroot. The application is verified by experiments that L-methyll pyroglutamate is effective on both dormant spores and activated spores, solves the problem that existing agents are difficult to kill dormant spores, thereby inhibits clubroot, through potting experiments, the application significantly reduces the incidence and disease index of clubroot, and has good prevention and treatment effects. In addition, L-methyll pyroglutamate is a potential natural product derivative, is easy to biodegrade, is safe to non-target organisms, has no chemical pesticide residue problem, and meets the requirements of green agriculture and sustainable development.

This invention relates to the technical field of fire extinguishing agents, and in particular to a fluorine-free foam fire extinguishing agent and its preparation method. By weight percentage, it comprises the following components: 5-15% natural surfactant, 7-10% hydrocarbon surfactant, 0.5-0.7% stabilizer, 3-8% co-solvent, 10-15% antifreeze agent, and the balance being water. The natural surfactant is Sapindus mukorossi saponin, and the hydrocarbon surfactant is a combination of sodium dodecyl sulfate and cocamidopropyl betaine. The use of Sapindus mukorossi saponin, when combined with the hydrocarbon surfactant, significantly reduces the surface tension of the fire extinguishing agent, improving the spreadability and stability of the foam. By optimizing the ratio of stabilizer and co-solvent, the foam's exudation time and anti-burning time are both extended, superior to commercially available products. All components are free of fluorocarbons, readily biodegradable, and environmentally friendly.

The present application belongs to the technical field of temperature control, and particularly relates to a temperature control liquid for coal-based Fischer-Tropsch synthesis hydrocarbon as well as a preparation method and application thereof. The temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon, or the temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon and liquid polyolefin. The distillation range of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 350 DEG C. The main component of the coal-based Fischer-Tropsch synthesis hydrocarbon is isomeric alkanes and normal alkanes with carbon number of 12-24, wherein the isomeric alkanes account for less than 90% of the total mass, and the normal alkanes account for more than 10% of the total mass. The kinematic viscosity of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 2.5 mm 2 / s at 100 DEG C, and 2.0-6.0 mm 2 / s at 40 DEG C. The kinematic viscosity of the liquid polyolefin is less than or equal to 8.0 mm 2 / s at 100 DEG C, and 2.0-20.0 mm 2 / s at 40 DEG C. The temperature control liquid has the characteristics of low density, low electrical conductivity, low kinematic viscosity and high heat conduction efficiency.

This invention belongs to the field of metallurgy and relates to a method for recovering silver from conductive silver paste. The method includes the following steps: S1, spray drying the conductive silver paste to obtain fine silver powder, and ball milling the fine silver powder to obtain a slurry; S2, clarifying and thickening the slurry to obtain a supernatant and a slurry underflow; pressure filtering the supernatant, and returning the filtrate to the ball mill; S3, adding methanesulfonic acid to the slurry underflow for leaching, controlling the time to 10-30 minutes, to obtain a leachate; filtering the leachate, the filter residue being silver powder; returning the filtrate for further leaching, and evaporating and crystallizing the filtrate after the Ag ion concentration in the filtrate reaches saturation to obtain silver methanesulfonate. The method of this invention has selective leaching characteristics for Ag₂O and Ag, and has the advantages of simple process flow, short reaction time, and high product purity, making it highly promising for industrial application.

This invention discloses a method for preparing a highly efficient, low-toxicity, and environmentally friendly geminal quaternary ammonium salt based on plant-derived linalool. The method comprises: S1, synthesis of chloroacetate; S2, preparation of a ditertiary amine; and S3, synthesis of the highly efficient, low-toxicity, and environmentally friendly geminal quaternary ammonium salt based on plant-derived linalool. Using the ditertiary amine obtained in S2, the chloroacetate obtained in S1, and a solvent, the highly efficient, low-toxicity, and environmentally friendly geminal quaternary ammonium salt based on plant-derived linalool is obtained. This invention introduces plant-derived linalool into the geminal quaternary ammonium salt structure through chemical bonding. The nitrogen ions on the geminal quaternary ammonium salt adsorbed onto the negatively charged bacterial surface, combined with the hydrophobic interaction of the plant-derived linalool, produce an excellent "adhesion-killing" highly efficient synergistic antibacterial effect, providing a new approach and technology for the high-value resource utilization of natural products.

This invention relates to the field of industrial organic waste gas purification and treatment technology, and particularly to an anti-adhesion absorbent liquid for high-temperature waste gas spray treatment in coating processes and its preparation method. The absorbent liquid consists of the following components by volume percentage: PEG600 13.4 vol%–22.0 vol%, Tween 80 2.8 vol%–6.0 vol%, triethanolamine 0.9 vol%–2.5 vol%, an alkaline co-solvent of anhydrous Na2CO3 or NaHCO3, and deionized water as the balance; wherein the sum of the volume percentages of PEG600, Tween 80, and triethanolamine is 17.1 vol%–30.5 vol%. Under simulated spray dynamic contact conditions (oscillation at 80°C), 10 mL can completely disperse 0.5 g–1.0 g of standard simulated pollutants (a mixture of benzoin oxide and tar solids); after absorption, the system pH ≈ 10 (sodium carbonate system) or pH ≈ 9 (sodium bicarbonate system). The absorbent of this invention comes into contact with high-temperature waste gas in the form of a spray and utilizes the high-temperature environment to enhance the dissolution and absorption effect. Even after gradual cooling, the system can still maintain uniformity and stability, without precipitation, stickiness, or adhesion to the wall, thus inhibiting adhesion and blockage from the source.

The present application relates to a kind of demulsifiers and its preparation method and application.The preparation method includes the following steps: (1) glycerol and p-hydroxy isophthalic acid are mixed, esterification is carried out, and branched prepolymer is obtained;(2) branched prepolymer is mixed with L-arginine, and amide reaction is carried out, and branched body is obtained;(3) branched body is mixed with carboxyl-terminated agent, and amide reaction is carried out, and the demulsifier is obtained.The demulsifier prepared by the specific preparation method can realize the efficient demulsification of high-salt crude oil emulsion, has the advantages of low toxicity, high demulsification efficiency, wide pH range, biodegradable.

The invention discloses a combined inhibitor for gangue minerals in cassiterite flotation and a preparation method and application of the combined inhibitor, and belongs to the technical field of mineral processing. The combined inhibitor is prepared from tragacanth gum, 2-amino-3-p-hydroxyphenylpropionic acid and water glass. The combined inhibitor can generate a selective inhibition effect on calcium and siliceous gangue minerals in cassiterite flotation under the condition of lower reagent dosage through the synergistic effect of the three, and an excellent flotation separation index can be obtained; the components of the combined agent are good in environment-friendly property, the raw materials are easy to obtain, and the combined agent is convenient to prepare and store. The method has important significance on efficient flotation separation and enrichment of cassiterite and corresponding gangue minerals and improvement of the utilization rate of tin resources.

The invention discloses a preparation method of efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on botanical linalool, which comprises the following steps: S1, synthesis of chloracetate, S2, preparation of di-tert-amine, and S3, synthesis of the efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on botanical linalool: adopting the di-tert-amine obtained in the S2, the chloracetate obtained in the S1 and a solvent, and stirring uniformly to obtain the efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on botanical linalool. The efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on the plant source linalool is obtained. According to the invention, plant-derived linalool is introduced into a gemini quaternary ammonium salt structure through chemical bonding, nitrogen positive ions on the gemini quaternary ammonium salt are adsorbed on the surfaces of bacteria with negative electricity, and an excellent'adhesion-killing 'efficient synergistic antibacterial effect can be generated by the hydrophobic antibacterial effect of the plant-derived linalool and the nitrogen positive ions and the plant-derived linalool; a new thought and a new technology are provided for high-value resource utilization of natural products.