78results about How to "Not easy to leach" patented technology

The invention discloses an alkaline residue porcelain granule which has a compound package structure. The alkaline residue porcelain granule comprises a porous core layer (2) and a shell layer having blind holes (1), wherein the porous core layer comprises alkaline residue, glass powder, coal ash and saw dust and the shell layer having blind holes comprises glass powder, clay and saw dust. A method for manufacturing the alkaline residue porcelain granule comprises the steps of: uniformly mixing the materials of the porous core layer and the shell layer having blind holes by a blender, adding water into the dry materials of the porous core layer to pelletize in a pelletizing pan in order to form the pellets of the core layer, placing the pellets into a balling pan which is filled with the dry materials of the shell layer, starting the balling pan, shaking for a sufficient time, packing the materials of the shell on the core layer by rolling in order to form the porcelain granule green-pressing having the package structure, drying the porcelain granule green-pressing at 105 DEG C, pre-burning the dried porcelain granule green-pressing, rising temperature and roasting, and then naturally cooling so as to finish the firing of the alkaline residue porcelain granule. The alkaline residue porcelain granule can efficiently prevent the chloride ion in the alkaline residue from dissociating and improve the application performance of the porcelain granule which uses the alkaline residue as raw materials in the concrete.

The invention discloses a technology for preparing a ceramic tile from high-volume municipal water supply plant sludge, and belongs to the field of solid waste recycling and building material production in environmental engineering. The technology comprises the following steps of: uniformly mixing 38 to 42 mass percent of municipal water supply plant dewatering sludge powder (dry weight) with a certain grain size, 38 to 42 mass percent of kaolin and 16 to 24 mass percent of potassium feldspar powder, adding water which is about 20 percent based on the dry weight of the total material, uniformly mixing, and storing for certain time in a constant-temperature environment; and performing compression molding under certain pressure, raising the temperature from room temperature to 1,200 DEG C by a certain method and keeping temperature for one hour, and naturally cooling to the room temperature to obtain the finished product. Through detection, the main technical indexes meet the related national standard. By the technology, the water supply plant sludge is effectively utilized, and other brick production raw materials are substituted; and the technology has good environmental benefit and certain economic benefit.

The invention discloses a maca wine and a preparation method thereof. The maca wine is prepared from the following raw materials in part by weight: 900-1000 parts of base liquor, 10-30 parts of maca, 1-2 parts of cultivated ginseng, 6-8 parts of the fruit of Chinese wolfberry, 1-5 parts of longan, 2-10 parts of jujubes, 2-8 parts of raspberry, 1-5 parts of sealwort extracts, 1-5 parts of extracts from pueraria and 0.5-3 parts of cordyceps militaris extracts. The preparation method comprises the following steps of pretreatment, extraction, mixing and after-treatment. The maca wine does not have traditional drug flavor, tastes good, and has effects of nourishing yin, reinforcing qi, refreshing and boosting immunity; and after drinking the maca wine, a person does not have a headache.

The invention discloses a preparation method for a MOFs heavy metal collecting agent. The method comprises the following steps: taking dimethyl formamide as a deprotonation alkaline solvent, macromolecule metal salt containing sulfydryl structure as a dopant and zinc nitrate and mesitylenecarboxylic acid as precursors, and then compounding by adopting a solvothermal method. The zinc-based MOFs prepared according to the method has a single mesoporous and micropore crystal structure; the mass transfer resistance is overcome in the reaction process; the mass transfer efficiency is improved; the prepared heavy metal collecting agent is a solid adsorbent and is easy to collect and regenerate; the leaching toxicity is low; the adsorption efficiency is high; the reutilization is realized.

The invention discloses a deodorization composite biological stuffing as well as a preparation method and application of the same. The deodorization composite biological stuffing comprises a stuffing main body and an adhesion agent, wherein the adhesion agent takes account for 10-40% of the stuffing main body in usage amount by weight percentage; in percent by weight, the stuffing main body comprises 70-80% of calcium carbonate, 5-10% of diammonium phosphate, 10-20% of bark powder, 0-5% of urea and 0-5% of the soybean meal; and in percent by weight, the adhesion agent comprises one or more of 30-100% of ethylene/ vinyl acetate, and 20-70% of Na2O nSiO2/K2O nSiO. By the steps of mixing, extrusion forming, drying and the like, the stuffing main body and the adhesion agent are prepared to the deodorization composite biological stuffing. The stuffing is matched with deodorization microorganism for use, second fermentation liquor obtained from the deodorization microorganism which is subject to seed cultivation and fermenter cultivation is uniformly scattered on the stuffing, and after growing, the microorganism can be used for deodorization work. The deodorization composite biological stuffing has the advantages of being excellent in deodorization effect and long in using time which is improved by 30% compared with that of the way using bark as stuffing.

The present invention discloses a horseradish peroxidase @ MOF composite catalyst and a preparation method thereof. The preparation method comprises the following steps: dissolving dimethyl sulfoxidein deionized water to obtain a dimethyl sulfoxide aqueous solution, dissolving horseradish peroxidase in deionized water to obtain a horseradish peroxidase aqueous solution, adding phthalic anhydridein the dimethyl sulfoxide aqueous solution to obtain a mixed solution, adding the mixed solution into the horseradish peroxidase aqueous solution after ultrasonic uniform mixing, conducting stirring at 0-4 DEG C for 1-3 h, and centrifuging and washing the product to obtain a modified horseradish peroxidase; dispersing MOF shell materials into deionized water to obtain a dispersion liquid of the MOF shell materials, then adding the obtained modified horseradish peroxidase into the dispersion liquid of the MOF shell materials, and conducting stirring for reaction to obtain the horseradish peroxidase @ MOF composite catalyst. The horseradish peroxidase @ MOF composite catalyst can be applied to catalytic conversion of o-phenylenediamine.

The invention discloses a preparation method of freeze-dried instant powder containing dried tubers of dendrobium devonianum or dendrobium officinale kimura. The preparation method comprises the following technological processes of pretreating raw materials namely fresh tubers of the dendrobium devonianum or the dendrobium officinale kimura, performing freezing, performing freeze drying, performing crushing, performing blending, performing mixing, performing pelletization, performing subpackaging, performing packaging, obtaining finished products and the like. The processed freeze-dried products are good in rehydration performance, high in dissolving speed, convenient to carry and drink, and long in quality guarantee period, and have a broad market prospect.

The invention discloses high-strengthhigh-toughness self-repairing fluorescent double-network hydrogel and a preparation method thereof. The preparation method comprises the following steps: adding double-bond modified rare earth doped NaREF4 fluorescent nanoparticles into a solution system consisting of agar, a monomer and an initiator, and carrying out photo-initiation polymerization to generatephysical crosslinking and chemical crosslinking, thereby obtaining the high-strengthhigh-toughness self-repairing fluorescent double-network hydrogel. By adding the double-bond modified rare earth doped NaREF4 fluorescent nanoparticles, the hydrogel is endowed with adjustable and concealed fluorescence characteristics, the surface modified double bonds can be crosslinked with a hydrogel monomer to serve as a nano crosslinking agent, the crosslinking degree of a hydrogel network is increased, and the mechanical property of the hydrogel network is improved. The high-strengthhigh-toughness self-repairing fluorescent double-network hydrogel prepared by the invention not only has high mechanical strength, high toughness, fatigue resistance and self-healing performance, but also has adjustableand concealed fluorescence performance, and has good application prospects in the fields of biological detection, sensing, intelligent packaging and the like.

The invention discloses a composite remediation agent for heavy metal contaminated soil and an application method, and belongs to the field of remediation of heavy metal contaminated soil. The composite remediation agent is prepared from, by mass, 25-40 parts of an iron-based agent, 5-15 parts of a sulfur-based agent, 40-60 parts of a calcium-based agent and 5-10 parts of organic matters, whereinthe organic matters are fulvic acid and at least one of ulmic acid and humic acid. The agent provided by the invention can adjust the dosage and component proportion of each agent according to the content of heavy metals in soil, and is widely applied to different types of polluted soil. The composite remediation agent has a good remediation effect on cadmium, lead, zinc, arsenic and other heavy metal composite contaminated soil, and has the advantages of long-term stability, short remediation time, flexible agent proportioning, low consumption and treatment cost saving.

The invention discloses a method for fixing metal oxide by using polyurea microcapsules, the steps of the method are provided as follows: forming solution A by adding 1 to 10 weight parts of surfactant I into 10 to 50 volume parts of deionized water; forming suspension B by ultrasonically dispersing for 20 to 30 minutes after adding 1 to 10 weight parts of diisocyanate, 0.1 to 1 weight parts of metal oxide and 1 to 10 weight parts of surfactant II into 5 to 30 volume parts of organic solvent; pumping the suspension B into a sprayer with a peristaltic pump by taking N2 as the carrier gas, and forming stable O/W emulsion liquid by spraying the solution A after the atomization and simultaneously fast interfacial polymerization happens; obtaining solid powders through vacuum concentration; washing the solid powders in ethanol and acetone, thus obtaining the polyurea microcapsules of the fixed metal oxide after natural drying. The method of the invention has the advantages of simple process, easy operation, low cost, low damage rate and the controllable particle size of the microcapsules of 2 to 60 Mum, etc.

The invention discloses a preparation method of a carboxyl-terminated hyperbranched polyesteramide collagenous fiber adsorbing material. The preparation method comprises the following steps of: adding carboxyl-terminated hyperbranched polyesteramide collagenous fiber into water, and stirring at normal temperature for uniform dispersion to obtain a carboxyl-terminated hyperbranched polyesteramide collagenous fiber dispersive liquid; then adjusting the pH value of glyoxylic acid aqueous solution to be 5.5-8.0, then adding the glyoxylic acid aqueous solution into the carboxyl-terminated hyperbranched polyesteramide collagenous fiber dispersive liquid, continuously reacting for 3.0-5.0 hours at the temperature of 0-40 DEG C, obtaining turbid liquid containing products, then filtering, drying and grinding a filter cake uniformly to obtain the carboxyl-terminated hyperbranched polyesteramide collagenous fiber adsorbing material. The carboxyl-terminated hyperbranched polyesteramide collagenous fiber adopted by the invention has a large amount of active groups, can be chelated with metal ions and is prepared into the carboxyl-terminated hyperbranched polyesteramide collagenous fiber adsorbing material under the action of a carboxylation reagent; and the carboxyl-terminated hyperbranched polyesteramide collagenous fiber adsorbing material has higher adsorbing performance, wider pH addition range and stronger adaptability to the change of multi-turbidity, alkalinity and the content of organic matters.

The invention discloses a lead-free soldering tin wire. The lead-free soldering tin wire is characterized by comprising, by mass, 1.5-8% of Cu, 0.01-2% of Co, 0.01-1% of Ni, and the balance Sn. The liquidus temperature of the lead-free soldering tin wire is 420 DEG C or below 420 DEG C. The lead-free soldering tin wire can further comprise one or more oxidation inhibition elements and/or one or more wetting improvement elements, and a composition of P, Ge and Ga or a composition with 0.05-2% of Ag by mass can be selected and used as the wettability improvement elements. The lead-free soldering tin wire coats the end portion of a copper wire coil. The lead-free soldering tin wire has the advantages that the lead-free soldering tin wire can not be subjected to copper leaching easily when being used in a molten state, the phenomenon of lead poisoning can be reduced, and the lead-free soldering tin wire is practical and convenient to use.

The invention belongs to the technical field of solid waste treatment, and particularly relates to a geological polymer prepared based on domestic sludge and a thermal-insulation and sound-insulationhumidity-regulating plate, and further discloses a preparation method of the geological polymer and a preparation method of the thermal-insulation and sound-insulation humidity-regulating plate. According to the geological polymer prepared based on the domestic sludge, the domestic sludge is directly matched with fly ash, the appropriate silicon-aluminum ratio of the system is adjusted by adding asilicon source material, and organic matters are added, so that a lightweight geological polymer is obtained. The thermal-insulation and sound-insulation and humidity-regulating plate is prepared bytaking the geological polymer as a raw material in a conventional manner, and the plate has relatively high silencing, heat insulation and humidity adjusting performance, and can be widely applied tothe field of functional building decoration.

The invention discloses a preparation device and a preparation method of a hydrophobic slow-release organic-inorganic compound fertilizer, the preparation device of the hydrophobic slow-release organic-inorganic compound fertilizer comprises an activation reaction kettle, a material conveying channel I, a compounding tank, a buffer tank, a spraying granulation dryer and a material conveying channel II; according to the invention, the hydrophobic agent is coated to form a plurality of hydrophobic layer films in the fertilizer particles, so that the pores of the fertilizer particles are blocked, the surface wetting angle of the fertilizer particles is increased, water in soil is not easy to wet the interiors of the fertilizer particles, and water-soluble inorganic nutrients in the fertilizer are not leached; and inorganic nutrients are gradually released from outside to inside only along with gradual decomposition and utilization of organic matters from outside to inside, and the hydrophobic slow-release organic-inorganic compound fertilizer can have multiple nutrient proportions from outside to inside through slurry with multiple nutrient proportions and multi-layer spraying granulation.

The present invention discloses catalyzed hydrogen reduction process of alkyl halide to dehaloginate and produce hydrocarbon. The process adopts alkyl halide as main material, inorganic palladium salt microcapsule as catalyst in the amount of 0.01-2 %, methanol and ethanol, n-hexane or tetrahydrofuran as solvent, and has hydrogen as reductant in 0.1-2.0 MPa introduced to react at 20-120 deg.c for 1-10 hr. The present invention has reuse of inorganic palladium salt microcapsule as catalyst, and possesses the advantages of no pollution, mild condition, high operation safety, easy separation of the catalyst for reuse, etc.

The invention discloses an arsenic-removing material for a water body and application thereof in treatment of arsenic-containing wastewater. The arsenic-removing material for the water body is prepared from an agent A and an agent B according to a mass ratio of 1 to 1, wherein the agent A is prepared by uniformly mixing 70 to 85 parts of polyferric sulfate, 15 to 25 parts of polyaluminium chloride, and 0 to 10 parts of sodium humate through a dry powder mixing machine; the agent B is prepared by uniformly mixing 55 to 70 parts of calcium-based bentonite and 30 to 50 parts of slaked lime through the dry powder mixing machine. The arsenic-removing material for the water body has the advantages that the arsenic-removing material can be widely applied to quickly and simply treat the arsenic-containing wastewater with various substrates and complicated form at site; the usage amount of material is small, the effect is outstanding, the stability is high, the environmental protection effect is realized, the cost is economic, the application range is wide, and the like.

The invention belongs to the technical field of molecular sieve materials, and particularly relates to a bimetallic MEL molecular sieve as well as a preparation method and application thereof. The bimetallic MEL molecular sieve has mesopores and micropores, and Cu and Fe are loaded in the mesopores and the micropores; wherein the silica-alumina ratio of the bimetallic MEL molecular sieve is 48-50.The bimetallic MEL molecular sieve is an H-MEL@ Cu/Fe bimetallic molecular sieve catalyst; the bimetallic MEL molecular sieve is provided with the mesopores and micropores, and has hierarchical porestructure, Cu and Fe metals are not easy to leach in the molecular sieve skeleton; the bimetallic MEL molecular sieve can be used as a catalyst and can show excellent catalytic performance in a Friedel-Crafts alkylation reaction of trimethylbenzene and benzyl alcohol, and the Cu and Fe bimetallic synergistic effect can improve the alkylation activity and the selectivity, so that the application prospect of the molecular sieve catalyst in the field of chemical engineering is broadened.

The invention relates to an MOF@POP-n composite catalyst, a preparation method and application thereof, and belongs to the technical field of chemical catalytic materials. The preparation method comprises the following steps of: dissolving cyclite in toluene to obtain a solution A, dissolving 1-vinylimidazole in toluene to obtain a solution B, mixing the solution A and the solution B uniformly, performing heating for 12-24h at 100-120DEG C in an N2 atmosphere, and conducting cooling, filtering, and washing to obtain a precursor; and adding the precursor, divinyl benzene and MOF into an N, N-dimethylformamide solution containing azodiisobutyronitrile, carrying out ultrasonic treatment for 15-45min, performing heating for 24-48h in a nitrogen atmosphere at 120-160DEG C, conducting cooling toroom temperature, and performing separation to obtain the target product. The MOF@POP-n composite catalyst catalyzes epoxypropane and carbon dioxide to generate cyclic carbonate, the highest yield can reach 98%, and the conversion rate can still reach 90% or above after the MOF@POP-n composite catalyst is repeatedly used six times.