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1446results about How to "Achieve regeneration" patented technology

Biogas slurry ecological purification method based on microalgae cultivation

The invention discloses a biogas slurry ecological purification method based on microalgae cultivation. The method comprises the following steps: (1) biogas slurry pretreatment; (2) habituated culture of autotrophic microalgae, namely, obtaining algae strains capable of rapidly growing in 70%-100% biogas slurry; (3) preparation of a seed solution; (4) a biogas slurry purification method during growing of microalgae, namely, after expanded cultivation, inoculating the habituated algae species into an open photobioreactor for cultivation, obtaining chlorella biomass growing by high density through a semi-continuous culture method and optimized methods such as fed-batch cultivation, and purifying the biogas slurry; (5) biochemical breaking of microalgae cell walls, namely, introducing the microalgae cells into a biochemical wall breaking pool, putting freshwater fish into the pool, and obtaining algae slurry subjected to wall breaking; and (6) collection of the microalgae cells and recycling of the biogas slurry. According to the method, not only is a method provided for purifying the biogas slurry, but also the obtained algae cells and the biogas slurry can be recycled, so that ecologicalization treatment of the biogas slurry is realized, the environment is improved, and furthermore, the economic and social benefits are produced.
Owner:湖南瑞藻生物科技有限公司

Method for regenerating positive active material from waste lithium iron phosphate batteries

The invention discloses a method for regenerating a positive active material from waste lithium iron phosphate batteries. The method comprises the steps as follows: 1) waste lithium iron phosphate batteries are discharged in saline water, and organic solvents, roll cores and casing materials are disassembled; 2) the roll cores are subjected to crushing, calcination and other steps, and active materials, copper foil and aluminum foil are separated through vibrating screening. Fluorine-containing waste gas is absorbed with lime water, the copper foil and the aluminum foil are separated with a magnetic separation method, the active materials are leached out with sulfuric acid, and a leachate and carbon residues are obtained through separation; 3) Cu<2+> in the leachate is reduced to elementary copper by adding iron powder, meanwhile, Fe<3+> is reduced to Fe<2+>, copper and excessive iron residues are filtered out, aluminum is removed through precipitation with an alkaline liquid, the filtrate is supplemented with a phosphorus source after filtration, the pH value is adjusted by adding the alkaline liquid, coarse lithium iron phosphate precipitates are produced, and finally, battery-grade lithium iron phosphate is obtained through sintering. Comprehensive utilization of the waste lithium iron phosphate batteries and regeneration of the active materials are realized with a simple, practical, economical and feasible method, no secondary pollution is produced, and the method is suitable for industrial production.
Owner:CENT SOUTH UNIV

Innocent comprehensive approach method for human feces by biotechnology

The invention relates to a method for realizing harmless comprehensive treatment of human excrements through adopting biotechnology, in particular to a comprehensive technology used for the harmless centralized treatment of human excrements in urban areas. The method comprises the following steps that: (1) human excrements, aquatic plants and terrestrial plants are added in a fermenter, and then a composite strain mixed solution of microzyme, bacillus and lactobacillus is fed into the fermenter so as to carry out aerobic fermentation and anaerobic fermentation in turn; (2) the biogas generated during fermentation is fed into a biogas generating set so as to generate electricity; (3) the products after fermentation undergoes solid-liquid separation, and the solid fermentation products are made into solid organic fertilizer through dewatering, drying, preparation and regranulation; (4) the liquid fermentation products is obtained after solid-liquid separation undergo decoloring, filtration and settlement layering, in the liquid, the sublayer liquid in the solution is made into liquid organic fertilizer through coarse filtration, secondary filtration, sterilization and preparation and the supernatant is made into rinsing meeting effluent standard through aeration and settlement filtration. The method can realize clean, environment-friendly and energy-saving ecological production.
Owner:昆明伽得科贸有限公司

Defluorination absorbing material based on aluminum base composite oxides and its preparation method and use and special device of the preparation method

ActiveCN101507911AExcellent adsorption and defluorination performanceGood defluoridation effectOther chemical processesChemical reactionWater source
The invention belongs to the field of materials for removing fluorine in water, and in particular relates to a fluorine-removal adsorption material based on alanate and aluminum-based composite oxide, a preparation method and uses of the same, and a special device for the preparation method. The fluorine-removal adsorption material based on the aluminum-based composite oxide, which is prepared by a heterotopic preparation method or an in-situ preparation method, comprises two parts of an active composition and a porous supported substrate, wherein the active composition is the aluminum-based composite oxide prepared from an aluminum salt solution and an inorganic alkaline solution by chemical reaction; and the aluminum-based composite oxide is loaded on the surface of the porous supported substrate by an in-situ loading method, and the mass ratio of the aluminum-based composite oxide to the porous supported substrate is 0.25-25:100. The fluorine-removal adsorption material based on the aluminum-based composite oxide can be used for the adsorption of fluorine pollutants in the water and particularly common fluorine in underground drinking water sources. In addition, the material can also be used for removing pollutants such as arsenic, iron, manganese, phosphate, and the like in the water.
Owner:清华苏州环境创新研究院

Independent electrohydraulic load sensitive energy regeneration hydraulic system of engineering machinery load port

The invention discloses an independent electrohydraulic load sensing energy regeneration hydraulic system of an actuator port of an engineering machine. An oil outlet of a variable pump is connected with an oil inlet of a proportional relief valve, a first pressure sensor, an oil inlet of a first proportional directional valve, and an oil inlet of a second proportional directional valve respectively. An oil outlet of the first proportional directional valve is connected with a second pressure sensor, the oil inlet of a proportional throttle valve and a rodless cavity of a hydraulic cylinder respectively. An oil outlet of the second proportional directional valve is connected with an oil outlet of the proportional throttle valve, a third pressure sensor and a rod cavity of the hydraulic cylinder. A Controller is in electrical connection with a control handle, the variable pump, the proportional relief valve, two proportional directional valves, the proportional throttle valve and three pressure sensors. The system adopts the pressure sensors to detect working conditions, selects control policies according to the working conditions, reduces energy loss in flow restriction and realizes overload energy regeneration under the control of an actuator. Speed and energy-conservation control is realized through the combination of pump control and valve control.
Owner:ZHEJIANG UNIV

Bionic three-dimensional tissue engineering scaffold and preparation method thereof

The invention discloses a bionic three-dimensional tissue engineering scaffold, which is formed by high molecular fibrous membrane-loaded active growth factors, or active growth factors loaded on a composite scaffold formed by a high molecular fibrous membrane and a macropore spongy layer. With the adoption of the bionic three-dimensional tissue engineering scaffold, the problem that the concentration of active molecules loaded with an emulsion electricity texture fibrous membrane is low; the emulsion electricity texture fibrous membrane is combined with a macropore spongy or a mixed electricity texture process, so that the load rate of the active factors can be greatly improved; parts of factors are retained in the fiber through an emulsion electricity texture core-shell structure, so that the effective control of releasing time is realized, and a repairing process is monitored for a long time; and the introduction of active molecules in the scaffold plays guiding and promoting functions for proliferating regenerative cells, directionally differentiating, migrating and adhering cells, and capturing stem cells to introduce regenerative functions of newly born tissues, so that a new path is provided for development of regenerative medicine industries.
Owner:江西欧芮槿生物科技有限公司 +1

Tissue engineering bracket material capable of physically embedding active substances and preparation method thereof

InactiveCN102552976AMigration fitPromote migrationProsthesisFiberActive matter
The invention relates to a tissue engineering bracket material capable of physically embedding active substances and a preparation method thereof. The tissue engineering bracket material capable of physically embedding the active substances is prepared from 100 weight parts of biodegradable macromolecular substance and 0 to 20 weight parts of active substances, wherein the weight part of the active substances is not equal to zero; 100 weight parts of biodegradable macromolecular substance consists of 50 to 100 weight parts of synthetic macromolecular substance and 0 to 50 weight parts of natural macromolecular substance; the macromolecular substances and the active substances form a micromolecular nanofiber membrane or a composite macromolecular nanofiber membrane; and the active substances are bonded on the surface of the fiber membrane uniformly. The tissue engineering bracket material capable of physically embedding the active substances has high biocompatibility and sufficient mechanical strength, can be biodegraded, is suitable for proliferation and directed differentiation of stem cells, and has the functions of promoting cell migration adhesion and capturing the stem cells so as to induce regeneration of tissues such as bones, cartilages, nerves, skin and the like.
Owner:汪泱

Apparatus of purifying CO2 in natural gas through low-temperature pressure swing adsorption (PSA) technology and method thereof

The invention belongs to the technical field of gas separation and purification and provides an apparatus of purifying CO2 in natural gas through a low-temperature pressure swing adsorption (PSA) technology and a method thereof. In the invention, by means of cooling capacity generated in liquefaction of natural gas, a low-temperature environment is formed to control the temperature within the range of -70 - 25 DEG C, and meanwhile, through change of pressure within the range of 0-10 MPa, an absorption process of CO2 at a low temperature with the solid absorbent is achieved. By means of increase of the temperature and reduction of the pressure of the low-temperature PSA natural gas purifying system, the CO2 in the solid absorbent is desorbed, thereby regenerating the absorbent and finally achieving the object of continuously purifying the natural gas and regenerating the absorbent. The solid absorbent can be regenerated through increase of temperature and change of pressure, thereby recycling the solid absorbent and further reducing the use of the absorbent. The apparatus is simple and available in operation process. The process can complete purification of natural gas and achieve adsorption, enrichment and capture of CO2, and also has significant practical significance in environment protection.
Owner:DALIAN UNIV OF TECH

S-1 full-silicon molecular sieve and preparation method thereof as well as application of S-1 full-silicon molecular sieve in caprolactam preparation

The invention discloses an S-1 full-silicon molecular sieve and a preparation method thereof as well as application of the S-1 full-silicon molecular sieve in caprolactam preparation. The S-1 full-silicon molecular sieve is prepared by the method comprising the following steps: (1) synthesizing a tetrapropylammonium hydroxide template agent; and (2) synthesizing a molecular sieve: carrying out a reaction on tetrapropylammonium hydroxide liquor and tetraethoxysilane and ethanol, filtering, washing with deionized water, drying reaction liquid, roasting, so as to obtain molecular sieve raw powder; adding silica sol, polyethylene glycol 2000, and stronger ammonia water, sesbania powder and activated carbon powder in the molecular sieve raw powder, kneading in a kneader, then carrying out extrusion; roasting, immersing the roasted product in a NH3-NH3NO3 mixing solution and a hydrofluoric acid solution respectively, washing with deionized water, drying, roasting again so as to obtain the S-1 full-silicon molecular sieve. In the invention, the template agent is cheap; the conversion rate of the cyclohexanone and selectivity of the caprolactam are extremely high; a catalyst can be easily and fast regenerated; and the use of concentrated sulphuric acid is avoided, thus the S-1 full-silicon molecular sieve and the preparation method thereof are environment-friendly.
Owner:CHINA TIANCHEN ENG +1

Organic matter and ammonia borane compounded hydrogen storage material and preparation method thereof

ActiveCN102030313ALowering the temperature of thermally liberated hydrogenInhibitionMonoborane/diborane hydridesPolyethylene oxideSolvent
The invention relates to an organic matter and ammonia borane compounded hydrogen storage material. The hydrogen storage material is prepared by compounding the organic matter and the ammonia borane, wherein the organic matter is phthalic anhydride, polyethylene oxide, dextrose, mannitol or mannitol hexaacetic ester. The preparation method comprises the following steps: 1) adding the organic matter to the purified acetonitrile solvent, and stirring for dissolving; 2) dissolving the ammonia borane into the mixing solvent comprising acetonitrile and methanol, and stirring at the temperature of 20 to 70 DEG C to obtain a uniform solution; and 3) carrying out vacuum drying, and removing the solvent, thus obtaining the hydrogen storage material. The invention has the advantages that the ammonia borane and the organic matter are taken as raw materials to prepare the hydrogen storage material at the lower hydrogen discharge temperature; the thermal decomposition and hydrogen discharge temperature of the ammonia borane can be effectively reduced; the generation of harmful gas impurities of borazole, diborane, ammonia and the like is effectively inhibited; the hydrogen storage material has quicker hydrogen discharge kinetics; in addition, the heat discharge amount is less in the hydrogen discharge course; and the enthalpy change of a decomposition reaction approaches to thermal neutrality; and the hydrogen storage material is beneficial to realizing the regeneration of reaction products through a solid-gas reaction or a chemical process under the relatively mild condition.
Owner:NANKAI UNIV

Regeneration treatment method for waste cathode carbon blocks of aluminum electrolytic cell

The invention discloses a regeneration treatment method for waste cathode carbon blocks of an aluminum electrolytic cell and belongs to the technical field of solid waste treatment in the aluminum electrolysis industry. The main treatment process comprises the steps of crushing, screening, toxicity inhibition, batching and pressure-controlled heat treatment. After waste cathode carbon block materials of the aluminum electrolytic cell are crushed and screened, toxic inhibitors of hydrogen peroxide, potassium permanganate, hypochlorite and the like are added, then carbonaceous materials of anthracite, calcined petroleum coke, waste anode carbon blocks, anode scraps and the like are blended to serve as furnace-in raw materials, and the furnace-in raw materials are placed in a resistance furnace to be subjected to heat treatment at the ordinary pressure (1200-1800 DEG C) or the control pressure (1000-1600 DEG C and 0.01-0.5 atm). Fluoride volatilized from flue gas can be used for producingfluoride salt electrolytes after being cooled and crystallized, treated materials do not contain any contaminant, the carbon content is up to 99%, the conductivity is good, the specific surface areais large, the treated materials can be used for producing various carbon products, waste is turned into wealth, and environment-friendly resource application of overhaul of the waste cathode carbon blocks of the aluminum electrolytic cell is achieved.
Owner:UNIV OF SCI & TECH BEIJING

Cleaning waste gas pressure swing adsorption purification and recycling method and device for fusion reactor hot room

ActiveCN105513661AMinimize wasteAchieving classification of by-productsGas treatmentDispersed particle filtrationRadioactive gasCarbon dioxide
The invention relates to a cleaning waste gas pressure swing adsorption purification and recycling method and device for a fusion reactor hot room. The method includes the technological process of cleaning and contaminating, solid and liquid impurity filtration and purification, cleaning medium adsorption separation and regeneration, low-temperature power gas preparation, volatilizable particle regeneration and volatilizable particle remote-distance pneumatic transport. Fusion reactor hot room cleaning waste gas containing radioactive particles and radioactive gas is processed in a low-risk mode through a multiple filtration and pressure swing adsorption method, and separation, classified collection and recycling of radioactive particles, radioactive gas tritium and a cleaning medium carbon dioxide gas are achieved. The purity of regenerated products is high, no external heat source heating is needed, the gas temperature change range is small, the device is more economical and saves more energy, the service life of adsorbent is long, the device maintenance is easy and convenient, automatic production can be completely achieved, and the method and the device are suitable for the hot room environment remotely controlled and operated.
Owner:UNIV OF SCI & TECH OF CHINA

Device and process for recycling volatile organic gas in adsorption-desorption manner

The invention discloses a device for recycling a volatile organic gas in an adsorption-desorption manner and a utilization method of the device. The device comprises activated carbon fiber adsorption towers, a vacuum pump, a condenser and a liquid storage pot, wherein an activated carbon fiber adsorption column as well as an upper fixing rack and a lower fixing rack which are used for fixing the activated carbon fiber adsorption column are arranged in each adsorption tower; the activated carbon fiber adsorption column is formed by a hollow insulating pipe which has an airtight bottom and an upper opened end and activated carbon fiber fabric which wraps the wall of the side surface of the hollow insulating pipe; air through holes are formed in the wall of the side surface of the hollow insulating pipe; the wall of the side surface of the hollow insulating pipe is completely wrapped by the activated carbon fiber fabric; two ends of the activated carbon fiber adsorption column are connected with an electrode in which a current can be conducted. According to the device, organic molecules adsorbed by a plurality of activated carbon fiber adsorption towers are recycled in a desorption condensation manner through the combination of electric-heating and vacuum technologies. According to the process of the device, the continuous adsorption-desorption recycling of the organic waste gas can be realized, so that the recycling rate of the organic waste gas is high and the activated carbon fiber can be completely regenerated.
Owner:ZHEJIANG UNIV OF TECH

Preparation method of hydrogel porous microspheres and porous scaffold material

The invention provides a preparation method of hydrogel porous microspheres. The preparation method comprises the following steps: a, a hydrogel material, a buffer solution and a photoinitiator are mixed to obtain a hydrogel solution, and an oily material is mixed with a surfactant to obtain an oily solution; b, a first container is partially nested in a second container, the inner diameter of theinlet end of the first container is larger than the inner diameter of the outlet end of the first container, and the inner diameter of the outlet end of the first container is smaller than the innerdiameter of the second container; the hydrogel solution is injected into the first container, the oily material is injected into the intersection of the first container and the second container, and the oily solution and the hydrogel solution form water-in-oil droplets under the action of a flowing shear force; c, ultraviolet irradiation is performed on the water-in-oil droplets, and crosslinkingis performed to obtain hydrogel microspheres; and d, freezing and freeze-drying are performed on the hydrogel microspheres to obtain the hydrogel porous microspheres. According to the invention, uniform and stable hydrogel porous microspheres are obtained by utilizing a micro-fluidic technology.
Owner:上海市伤骨科研究所

Regeneration system for carbon-rich amine liquid and application thereof

The invention relates to a regeneration system for carbon-rich amine liquid produced by capturing of carbon dioxide in mixed gas and application thereof. The regeneration system consists of a bipolarmembrane electrodialysis device and a carbon dioxide removal device, wherein the bipolar membrane electrodialysis device consists of a bipolar membrane electrodialysis membrane stack which is fixedlyarranged between an anode plate and a cathode plate; the carbon dioxide removal device consists of one or multiple of hollow fiber membrane reactors; an inlet of the carbon dioxide removal device is communicated with an acid chamber outlet of the bipolar membrane electrodialysis device, and an outlet of the carbon dioxide removal device is communicated with an acid liquid storage tank; the carbondioxide gas removed out of the carbon dioxide removal device is collected into the carbon dioxide storage tank. The regeneration system has the advantages that the carbon-rich amine liquid with heat stability is treated by the bipolar membrane electrodialysis and carbon dioxide removal coupling device, so that the independent operation of traditional hot blowing and organic ammonia regeneration isavoided; the energy consumption in carbon capturing is reduced, the technology process is simplified, and the whole carbon dioxide net capturing efficiency is improved.
Owner:UNIV OF SCI & TECH OF CHINA
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