47results about How to "Has a reducing effect" patented technology

The invention provides a nano-grade ZnO loaded magnetic biological carbon composite photocatalyst and a preparation method thereof. The preparation method comprises the following steps: step 1: carrying out thermal hydrolysis on a biomass under an alkaline condition to extract plant fibers; after drying, carrying out pre-carbonization treatment; mashing and sieving with a sieve with the size of 10to 20 meshes; step 2: mixing a ferrous salt solution and a potassium hydroxide solution; adding soluble zinc salt; step 3: adding the sieved plant fibers into the solution formed by step 2; uniformlymixing and adding a potassium nitrate solution; after sufficiently stirring, treating a mixture in a water bath; continuously stirring and ageing until black gel is formed, so as to obtain a black gel solution; step 4: after washing and drying the black gel solution, generating dry gel; calcining the dry gel and continuously introducing inert gas; after washing and drying, obtaining the nano-grade ZnO loaded magnetic biological carbon composite photocatalyst. According to the nano-grade ZnO loaded magnetic biological carbon composite photocatalyst, magnetic biological carbon is used as a carrier of the photocatalyst, and the problem that the photocatalyst in chromium-containing sewage treatment is difficult to separate and recycle is solved.

The invention relates to a preparation method of a lithium iron phosphate material as a lithium ion battery positive electrode active substance. The preparation method comprises the following steps: dissolving a lithium source, an iron source and a phosphorus source in a reducing agent, adding a chelating agent, and uniformly stirring to form a mixed solution; performing a hydrothermal reaction; washing and drying to obtain lithium iron phosphate with a grade structure; and mixing with a carbon source, and calcining in a reducing atmosphere to obtain carbon-coated lithium iron phosphate with the grade structure. Compared with the prior art, the preparation method has the beneficial effects that the purity of the product is increased; the reducing agent has a reducing function, the chelating agent has a structure guiding function; the conductivity of lithium iron phosphate is enhanced, and the electrochemical property is improved; a resultant temperature interval is large, and a great application value and a bright development prospect are achieved; the specific capacity is high, the specific surface area is moderate, the cycle performance is good, the repeatability is high, the processing property is excellent, and the demand on a high energy storage device in practical production can be met.

The invention provides a nitrogen-doped carbon-based metal monoatomic catalyst as well as a preparation method and application thereof. A hard template method is selected to prepare the metal monoatomic catalyst, an amino-containing organic body and a chlorine-containing organic body are used as polymerization monomers, a transition metal salt is used as a metal source, a ratio relationship of a template, the organic monomers and the metal salt and reaction conditions are precisely regulated and controlled, so that in-situ polymerization of the organic monomers on the surface of the template and simultaneous chelating of transition metal ions can be realized to prepare the highly exposed monoatomic metal catalyst. The preparation method of the catalyst provided by the invention can ensurethe load capacity of the monoatomic metal to the greatest extent, and the condition that a nitrogen-doped carbon material wraps a metal oxide can be avoided through reasonable regulation and control of reparation conditions; and in addition, the Fenton catalyst prepared by the method has the advantages of high activity, a low metal loss rate and strong regeneration ability.

The invention provides a heavy metal activator and application thereof in soil joint restoration. The activator preparation comprises the following steps that (1) straws are crushed and sieved, the crushed straws are added into an alkaline solution, a heating reacting is conducted, filtering is conducted after finishing the heating reaction, the filtration residue is taken and washed with water, washing is repeated until the eluent is neutral, and drying is conducted to obtain the lignin-removed straws; (2) urea is added into the lignin-removed straws, composting fermentation is conducted, rapeseed meal is added after the fermentation is thoroughly decomposed, a functional microbial agent is added, secondary fermentation is conducted after uniform stirring, and then after the second fermentation, the straw bio-organic fertilizer is obtained; and (3) organic acid is added into the straw bio-organic fertilizer, and uniform mixing is conducted to obtain the heavy metal activator. According to the application, through crop-rotation combined planting of soybeans and oilseed rape, the heavy metal is activated by the heavy metal activator, so that heavy metal in the soil can be convertedinto an effective state as much as possible to realize the continuous absorption of heavy metal, the joint restoration efficiency is improved, and the easy-to-implement and efficient combined restoration method is also provided for restoring heavy metal contaminated farmland soil.

The invention provides a preparation method of a low-oxide-inclusion high-performance powder metallurgy nickel-base superalloy, and belongs to the field of metal materials. The preparation method comprises the steps that firstly, spherical prealloyed powder is prepared from the components by adopting a vacuum gas atomization powder processing technology in percentage by mass: 0.16-0.19% of C, 9.8-12% of Cr, 16.5-17.5% of Co, 7.7-8.8% of W, 0.65-0.88% of Mo, 5.75-6.30% of Al, 0.025-0.033% of B, 0.055%-0.087% of Zr, and the balance of of Ni; then the prealloyed powder with certain granularity and TiH2, TaH and HfH2 powder with certain content and granularity are selected for being uniformly mixed; a mixture is loaded in a rubber covering sleeve for cold isostatic compaction; then the rubbercovering sleeve is removed and a formed green body is placed in a high vacuum hot-pressing furnace for hot-pressing sintering compactness according to a certain sintering process; then the compact sintered green body is forged or rolled according to the requirement to obtain workblank parts; and finally, the parts are subjected to timeliness treatment. By adopting the preparation method of the low-oxide-inclusion high-performance powder metallurgy nickel-base superalloy, the oxygen content of prepared nickel-base superalloy materials is low, and high endurance strength and high low-cycle fatigue can be obtained.

The invention belongs to the technical field of sewage biology, and particularly relates to a method for extracting activated sludge extracellular polymers. The method comprises the following steps: pretreating activated sludge, carrying out soluble extracellular polymeric substance (S-EPS) extraction, carrying out loosely bound extracellular polymeric substance (LB-EPS) extraction, carrying out ionic tightly bound extracellular polymeric substance (TB-EPS) extraction, and carrying out hydrophobic tightly bound extracellular polymeric substance (TB-EPS) extraction. According to the method forextracting the activated sludge extracellular polymers, the liquid phase environment of EPS extraction is optimized, the combination of different extraction methods is screened, an inorganic ion extraction agent is selected, and different types of surfactants are screened to separately and sequentially extract four different types of EPS, namely S-EPS, LB-EPS, ionic TB-EPS and hydrophobic TB-EPS in the activated sludge, so that extraction efficiency of different types of EPS is high, purity is high, and the cell damage is small. The adopted inorganic ionic extraction agents are small in changedegree of the extracellular polymer, are green and environmentally friendly, and are accurate in quantification.

A fully-closed working chamber for vehicle sterilization, disinfection and deflavour comprises a working chamber main body consisting of a chamber body, an equipment chamber and an operation chamber, wherein the chamber body is provided with a main door for the entry of the vehicle needing sterilization and disinfection and an auxiliary door for the entry of staff; the main door is connected directly with the outdoor and the auxiliary door is connected indirectly with the operation chamber; the top of the chamber body is provided with an interlayer as the equipment chamber within which a ventilation purification system mainly comprising a fan, a ventilating pipe and an air volume control valve and an exhaust discharge system mainly comprising an exhaust fan, an electric valve and a discharge pipe; the chamber body is further provided with an efficient ultraviolet germicidal lamp and a negative ion generator. The invention has the advantage of good sterilization and disinfection, high working efficiency, complete function of sterilization, disinfection and deflavour and omni-directional sterilization and disinfection for the external and the internal of the vehicle, which quickly, fully and basically solves the problem of air pollution in the vehicle.

The invention relates to a green tea preparation method capable of removing pesticides from tea leaves. The method comprises steps as follows: a, cleaning of fresh leaves; b, removal of the pesticides; c, fixation; d, fermentation; e, spreading for cooling; f, roasting; g, aroma increasing; h, high-temperature steaming; I, cooling and roasting: the tea leaves subjected to treatment in the step h are shaped or subjected to bulk packaging, then transferred to a cooling house for roasting at the temperature controlled to range from 18 DEG C to 28 DEG C, roasted and cooled for 20-25 days, then subjected to quality inspection and put into storage. The method has the beneficial effects as follows: multiple tedious toxin removal methods for tea trees, tea gardens and the like can be omitted, the dry tea pesticide residues can be removed successfully, tea completely reaches the tea leave export standard after being tested by a quick test meter for tea leave pesticide residues, the method has a reduction effect, the peculiar smell of dry tea leaves can be removed, a lot of labor is omitted for commercial application, the effect and the efficiency are significant, and the method is applicable to green tea, black tea, white tea, oolong tea and the like.

The invention relates to a carbon steel pipeline forging process. The carbon steel pipeline forging process comprises the following steps: 1) theoretical analysis, drawing a carbon steel pipeline heating curve, the abscissa is the heating time, and the ordinate is the heating temperature; 2) according to the steps 1) The obtained heating curve of the carbon steel pipeline. The carbon steel pipeline is subjected to heat treatment; 3) The heated carbon steel pipeline is subjected to pier thickening and elongation treatment. The invention provides a carbon steel pipeline forging process with high process precision, good surface quality and simple and reliable casting process.

The invention relates to an energy-saving environmentally-friendly reduction converter. The converter comprises a converter body, a reduction device, a cooling device, an air generation device, an air heating device and a bracket, wherein the converter body comprises a fan and an air flue; the converter body, the reduction device and the cooling device are vertically arranged from top to bottom on the same axis; a motor I drives a rotary platform to enable the converter body to rotate; a motor II and a motor III respectively drive a reduction disk and a cooling disk to rotate, so that reduction and cooling speeds are high, and reduction and cooling efficiencies are high; and a sand seal, a liquid seal and a fire-resistant heat insulation layer are adopted, thereby reducing heat loss and greatly saving energy.

The invention relates to a production process of a soft copper-clad steel wire. The production process of the soft copper-clad steel wire successively comprises the steps of drawing, high-temperature tempering, electro-deposition pretreatment, acid electrolyzation, washing, pretreatment electro-deposition, washing, thick processing electro-deposition, washing, anti-oxidation, drying, drawing, washing, anti-oxidation treatment and ammonia-decomposition high-temperature tempering. The production process of the soft copper-clad steel wire has the advantages that the elongation rate of the copper-clad steel wire is greater than or equal to 10%, which is more than one time of the elongation rate of the copper-clad steel wire produced by a traditional tempering process.

The method for preparing thin film of cobalt silicide includes steps: first, depositing Ti, Co, TiN in sequence on silicon base plate; next, carrying out short annealing in N2; then, carrying out selected etching in liquor tank of containing APM and SPM respectively; finally, carrying out second short annealing in N2. Thin film of cobalt silicide prepared by the disclosed method possesses advantages of less defect density on film, better heat stability, silicide and silicon matched to crystal lattice on substrate well so as to have more flattening interface, and reduced leakage current of PN junction.

The invention discloses a functionalized graphene/polyaniline composite filter membrane and a preparation method thereof, and aims to provide a membrane material used for water treatment. The grapheneoxide/polyaniline composite membrane comprises a matrix, functionalized graphene oxide and polyaniline grafted on the surface of a functionalized graphene oxide membrane. The preparation method comprises the following steps: functionalizing the graphene oxide, preparing a membrane on the matrix, immersing the matrix with the membrane in a mixed acid solution of aniline and ammonium persulfate, performing a reaction for a certain time, taking out the obtained material, and removing the polyaniline on the surface to obtain the functionalized graphene oxide/polyaniline composite filter membrane.The functionalized graphene oxide/polyaniline composite filter membrane has the advantages of simple preparation process, low cost and good purification effect.

The invention relates to a common sow thistle tea making method capable of removing harmful matter. The common sow thistle tea making method comprises the following steps of 1, fresh leaf washing, 2, pesticide removal, 3, fixation, 4, fermentation, 5, spread cooling, 6, baking, 7, aroma increase, 8, high-temperature steaming and 9, cooling and baking. After common sow thistle leaves subjected to the step 8 are subjected to forming or bulk packaging, the common sow thistle leaves enter a cooling room to be baked, the temperature is controlled to range from 18 DEG C to 28 DEG C, baking and cooling are carried out for 20-25 days, and then quality testing and warehousing are carried out. The common sow thistle tea making method has the advantages that many tedious toxin removal methods for tea trees, tea gardens and the like can be omitted, the pesticide residues of dry tea can be successfully removed, and after detection of a tea pesticide residue tachymeter, the tea exporting standard is completely met; a reducing function is further achieved, the foreign taste of the dry tea can be removed, commercial application is achieved, much labor force is saved, the effect and efficiency are remarkable, and the method is suitable for green tea, black tea, white tea, oolong and the like.

The invention relates to the field of uranium mine radioactive pollution treatment, in particular to enterobacter cloacae and application thereof. The collection number of the enterobacter cloacae is CGMCC (China General Microbiological Culture Collection Center) NO: The enterobacter cloacae is applied to uranium element reduction and uranium ore slag pollution treatment. The invention provides a preparation method of active bacterial liquid, which comprises the following steps: inoculating enterobacter cloacae into a liquid culture medium, standing and culturing to obtain a basic active bacterial agent; and inoculating the basic active bacterial agent into a fermentation medium according to an inoculation amount of 2-5%, and carrying out shake culture, so that the number of cells in each milliliter of the fermentation medium is not less than 3 * 10 < 9 >-5 * 10 < 9 >, thereby obtaining the active bacterial liquid. The strain has a reduction effect on uranium in tailings, uranium is converted into a reduction state which is not easy to dissolve from an oxidation state which is easy to dissolve, and the uranium is fixed in situ, so that the risk of migration to the external environment is reduced, and uranium pollution is inhibited from the source.