247results about How to "Reduce the amount of dissolution" patented technology

The invention discloses a preparation method of a catalytic wet oxidation catalyst and a treatment method of organic wastewater. The preparation method comprises the following steps of: (1) taking a porous inert material as a carrier, and performing pre-impregnation treatment on the carrier by adopting an organic acid solution; and (2) preparing an impregnating solution with a water-soluble compound containing transition metal elements and a water-soluble compound containing auxiliary elements, impregnating the carrier after treatment in the step (1) with the impregnating solution, drying in shade for 12-48 hours in air at appropriate humidity, then drying and roasting to obtain a final catalyst. When the catalyst prepared by the method disclosed by the invention is used for high-concentration organic wastewater, the characteristics of high activity, good stability and the like are realized, and the energy consumption and the investment can be reduced.

The invention provides a cathode material of a lithium ion battery. The cathode material is composed by the atomic ratio shown in formula (I): Lia(MxMn2-x)(O4-yZy), wherein a is greater than or equal to 0.8 and less than or equal to 1.2; x is greater than or equal to 0 and less than or equal to 1; y is greater than or equal to 0 and less than or equal to 1; M is one or more selected from Li, Na, K, Ca, Mg, Al, Ti, Sc, Ge, V, Cr, Zr, Co, Ni, Zn, Cu, La, Ce, Mn, Hf, Nb, Ta, Mo, W, Ru, Ag, Sn, Pb and Si; and Z is one or more selected from OH, halogens, N, P, S and O. Primary particles of the cathode material have sphere-like morphologies, wherein (111) face is connected with adjacent equivalent crystal face through a curved surface having no clear edges. The invention also provides a preparation method for the cathode material of the lithium ion battery and the lithium ion battery. The cathode material provided by the invention has good high-temperature cycling performance and good filling property.

The invention discloses a building material product based on the synergic action between alkali and CO2 and a method for preparing the same, which belongs to the field of silicate building material and product thereof. In the building material product, the fly ash the fineness of which is controlled in the range of between 400 and 600m<2>/Kg and the slag form a mixed powder material, and an aggregate and water glass are added into the mixed powder material for forming so as to obtain a blank, and the blank is subjected to natural curing and carbonization to obtain the building material product. In the invention, the industrial waste slag is used as raw materials, the high-performance silicate product is prepared under the conditions of low alkali and not doping lime and cement clinker, so that the strength level is high, no scumming phenomenon occurs on the surface of the product, the release quantities of various toxic and harmful ions are far below the threshold value; moreover, the building material product has the advantages of good durability, strong freezeproof and weather resistance capabilities, and is suitable to be the building wall material. The invention has active effect on utilizing waste slag resources, saving energy and reducing emission.

A method including electrolysis processing using sulfate-based electrolytes includes precipitating sodium sulfate decahydrate from a salt solution and then redissolving sodium sulfate decahydrate to prepare feed of electrolyte solution for the electrolysis processing. Front-end processing may be used to treat mixed salt solutions, including brine solutions. Calcium sulfate reagent may provide a sulfate source to regenerate electrolyte solution following carbon capture, and with carbon dioxide being sequestered in the form of calcium carbonate.

The invention discloses an energy-saving device and process for oxidation tank aluminum ion and sulfuric acid recycling and oxidation liquid corrosion inhibition. The process comprises an oxidization liquid cyclic cooling step, an aluminum ion crystal product recycling step, a sulfuric acid oxidization liquid recycling step, a gas stirring step and a defrosting step; the aluminum ion crystal product recycling step includes that oxidization liquid is guided into a reaction tank, ammonium aluminum sulfate crystals are precipitated out after ammonium sulfate is added into the reaction tank, and then materials in the reaction tank are guided into a centrifugal machine to be centrifuged so that solid and liquid after solid-liquid separation can be acquired; and the sulfuric acid oxidization liquid recycling step includes that oxidization liquid after crystallization treatment is collected, and is conveyed to an anodic oxidization tank to be cyclically used after being subjected to regeneration treatment. The energy-saving device and process for oxidation tank aluminum ion and sulfuric acid recycling and oxidation liquid corrosion inhibition are provided, by extracting aluminum in the oxidization liquid, sulfuric acid is recycled, the resistance of the oxidization liquid is reduced, a corrosion inhibition agent is added in the oxidization liquid, oxidization energy conservation is achieved by reducing the dissolving amount of an oxidization film, and more than 20% of energy is saved.

The invention discloses a method for preparing the rare-earth compound oxide catalyst, wherein the component is the composite oxides of ZrO2 and CeO2, and the molar ratio of the Zr and Ce is 1:1~1:11. The preparing method comprises the following steps: a) formulating the mixed solution of zircon salt and cerium salt, b) dropping the solution slowly to the alkaline solution which has been stirred vigorously, getting the gelatin deposit and filtering, c) dispersing the deposit again into the deionized water, adjusting the PH to alkalinity, refluxing in the hot alkali liquor, drying and baking and getting the catalyst.

The invention relates to a light composite electro-catalysis energy-saving anode for non-ferrous metal electro-deposition, which is composed of a metal substrate, an interlayer and a composite electro-catalysis superficial layer in sequence from inside to outside, wherein the metal substrate is Al or Al base alloy (Al-M1), the interlayer is a composite layer Al2O3-(Pb-M2) composed of Al2O3 or Pb base alloy, and the composite electro-catalysis superficial layer is a composite deposite (Pb-M2)-M3Ox composed of Pb or Pb base alloy and oxide catalyst or a composite deposite PbO2-M3Ox composed of PbO2 and oxide catalyst. The preparation method of the anode comprises the following steps: preparation of the metal substrate: carrying out anodic oxidation on the metal substrate surface and prefabricating a multihole Al2O3 layer; then performing an electro-deposition Pb or Pb base alloy layer on the multihole Al2O3 layer; and plating a (Pb-M2)-M3Ox or PbO2-M3Ox composite superficial layer on the surface of the Pb or Pb base alloy layer. The anode prepared by the invention can effectively reduce production energy consumption, improve cathode product quality, lower labor intensity, is suitable for industrialized production and can replace the Pb base alloy anode applied in the existing industry.

The invention provides a preparation process of a fish scale collagen protein. With the preparation process, the collagen protein can be extracted from fish scales, so that the fish scales are changed into things of value from waste material and thorough utilization of resources is realized. The preparation process comprises the following steps of pretreating, decalcifying, neutralizing and removing impurity, washing by using water, sol, solid-liquid separating and filtering, hydrolyzing, filtering and separating the collagen protein, filtering and separating the macromolecular protein, desalting, dehydrating, drying and the like to obtain collagen protein powder. The collagen protein powder prepared by the preparation process has the molecular weight of less than 5000 Daltons and can be absorbed by the human body easily.

The invention discloses a method for preparing a catalyst and a water treatment method for catalyzing ozone oxidization by utilizing the catalyst and relates to a method for preparing a catalyst and a water treatment method. The invention solves the problem that sludge left after sewage treatment occupies vast land and causes pollution to the environment. The method for preparing the catalyst comprises the following steps of: after drying, pulverizing and screening the sludge, charging the sludge into a zinc chloride aqueous solution; standing and removing supernatant liquor; and after insulating heat of particle sludge in a muffle furnace, rinsing respectively with hydrochloric acid and deionized water and drying to obtain the catalyst. The water treatment method comprises the following step of charging water treated by a flocculating pond, a settling pond and a filter pond or sewage treated by a settling pond I, a biological pond and a settling pond II into a reactor in which ozone and the catalyst are added, for treating. The invention provides the ozonization catalyzing catalyst with the characteristics of low cost, efficient catalysis, less dissolving amount and large specific surface area while the sludge problem is solved. The catalyst of the invention can improve the removal efficiency of ozone on organic pollutants in water.

The invention relates to the technical field of water treatment, and especially relates to a preparation method of a modified alumina carrier, a catalytic ozone oxidation catalyst, and an application of the catalyst. The preparation method of the modified alumina carrier comprises the following steps: providing an alumina substrate; carrying out primary modifier spray immersion, primary drying and primary calcination on the alumina substrate, and naturally cooling the obtained calcined alumina substrate to room temperature; and carrying out secondary modifier spray immersion, secondary drying and secondary calcination on the alumina substrate, and naturally cooling the secondary calcined alumina substrate to obtain the modified alumina carrier. The catalytic ozone oxidation catalyst prepared from the modified alumina carrier greatly improves the COD removal rate, so the sewage treatment cost is reduced; the dissolution rate of metal ions is greatly reduced, so the service life of the catalyst is prolonged; and the catalyst has the advantages of low cost and simple preparation method, and is very suitable for industrial production.

A hydrogen permeable structure includes a base material (1) including porous ceramic, and a hydrogen permeable film (2) formed on the base material (1), including palladium (Pd) and at least one element other than palladium and having an amount of hydrogen dissolution at a prescribed temperature smaller than that of palladium alone. The hydrogen permeable film (2) is formed on the surface of the porous ceramic base by a physical vapor deposition technique after any pin holes in the surface of the base have been filled with a porous oxide material.

The invention belongs to the field of manufacturing of ceramics and specifically relates to a high-gloss transparent glaze formula for daily-use ceramics, as well as a preparation method and a using method of the high-gloss transparent glaze formula. The high-gloss transparent glaze formula for the daily-use ceramics provided by the invention is prepared by taking feldspar powder, heavy calcium carbonate, limestone, talcum, dolomite, kaolin, silicon oxide, zinc oxide, barium carbonate and water as raw materials and performing a production process with reasonable formula and appropriate control. A ceramic device produced by a transparent glaze is detected to have high gloss and low dissolution of lead and cadmium, is suitable for production of the daily-use ceramics, such as bowls, spoons, basins and the like, has the characteristics of aesthetic shape, health, environmental friendliness and the like, and has great popularization value and social and economic benefits.

The invention belongs to the technical field of building materials, and particularly relates to preparation of magnesium phosphate cement with good hydrolytic resistance and a using method thereof. The magnesium phosphate cement is prepared from calcined magnesia, monopotassium phosphate, retarder, desulphurization gypsum, coal ash, steel slag powder, limestone flour, a water reducing agent and a defoaming agent. The defects that traditional magnesium phosphate cement is insufficient in early strength, low in later strength, poor in water resistance, high in cost and the like can be overcome, and the additional value of the industrial byproducts such as the coal ash, the steel slag powder and the desulphurization gypsum can be improved. The magnesium phosphate cement with good hydrolytic resistance can be used as a rapid repair material, has the excellent properties that preparation technology is simple, fluidity is good, early strength development is fast, later strength is not reduced and permeability and erosion resistance is good, is applicable to rapid repair engineering of bridges, wharfs, municipal engineering and the like, and has good economic benefits and social benefits.

The invention provides an iron-nitrogen-carbon composite material containing monatomic active sites, which comprises a carrier containing graphite-like carbon nitride and iron monatomic combined with the carrier, so that the catalytic activity to peroxymonosulfate is improved, and a large amount of metal ions are prevented from being dissolved out. The preparation method comprises the following steps: S1, dissolving a nitrogen-containing carbon source in an ethanol solution to obtain a solution A; wherein the nitrogen-containing carbon source is prepared from one or more of melamine, dicyandiamide and urea; S2, dispersing an iron-containing metal precursor in the solution A, and then performing evaporation to dryness treatment to obtain a mixed substance B; wherein the iron-containing metal precursor comprises one or two of chlorhematin and iron phthalocyanine; and S3, sequentially performing grinding and mixing treatment, pyrolysis treatment and cooling treatment on the mixed substance B, sequentially performing acid pickling treatment, water washing treatment and drying treatment on a substance obtained after cooling treatment, and obtaining the iron-nitrogen-carbon composite material.

The invention provides a low-grade multi-metal sulfide mineral selective bioleaching technology. The process is as follows: pile building is performed on the raw mineral materials, dilute acid solution is adopted for presoaking, and efficient mineral leaching bacteria are led in for leaching after the acidity of the mineral pile is basically stable; pile unloading is performed when the leaching of nickel reaches more than 80 wt%, then pile building is performed again on the leaching residue, and thermophilic bacteria are led in for leaching; and when the concentration of nickel in the leaching agent is more than 2.0 g/L, open-cycle is performed on the partial leaching agent, sodium sulfide is added into the leaching agent for fractional precipitation, so as to obtain copper sulphide, zinc sulphide and nickel and cobalt sulphide products, after precipitation is completed, lime is added into the leaching agent for neutralization, wherein concentration of iron in the neutralized leaching agent is less than 1.0 g/L, and the neutralized leaching agent can be reused at the leaching stage. According to the invention, technological process is short, equipment is simple, investment conservation and zero contamination are realized, cost is low, recovery rate of valuable metal is improved, the purpose of comprehensively utilizing low-grade multi-metal sulfide mineral resources is realized, and greater economic benefits can be achieved.

The present invention pertains to a polyolefin-composite hollow-fiber membrane and a manufacturing method for the same, said polyolefin-composite hollow-fiber membrane having: a homogenous membrane layer formed from polyolefins having a metal flow rate measured in accordance with JIS K7210 code D of 1.0 g/10 minutes, or less, and an Mw/Mn ratio of not more than 4.0; and a porous membrane layer which is formed from polyolefins having an Mw/Mn ratio of 8.0-12.0. The present invention also pertains to a hollow-fiber membrane module which is equipped with the polyolefin-composite hollow-fiber membrane. The present invention enables the provision of a polyolefin-composite hollow-fiber membrane, a manufacturing method for the same and a hollow-fiber membrane module; the polyolefin-composite hollow-fiber membrane has excellent solvent resistance and gas permeability, and when used in the deaeration of dissolved gas in a drug solution, can suppress leakage of the drug solution to a high degree, and can efficiently reduce the amount of dissolved gas.

A Ru/Al2O3 catalyst for the catalytic oxidization of ozone is composed of Al2O3 as carrier and RuO2 as active component proportionally. Its preparing process includes such steps as equivolume mixing between RuCl3 solution and Al2O3 carrier, impregnating in shaker, drying and microwave heating. It has high effect to remove ozone, interference substance to internal secretion, phenols and micro-molecular acids.

The invention provides a method for reducing environmental pollution caused by hazardous heavy metals, and relates to the treatment of hazardous heavy metals in waste liquor and waste material. The method adopts hydrated calcium aluminate sulfate to solidify hazardous heavy metal components in liquid and solid waste material. Through mixing fresh calcium oxide, aluminium sulphate and silicon dust as raw materials for preparing hydrated calcium aluminate sulfate into the incineration ash of the liquid and solid waste material containing the heavy metal components, the method effectively solidifies and inhibits the hazardous heavy metals from being dissolved out; through the treatment, the reduced amount of dissolved-out hazardous heavy metal components reaches 90%; the method has the characteristics of simple implementation and prominent treatment effects, and is not easy to cause secondary pollution.