970results about How to "High adsorption rate" patented technology

One ozone concentrating chamber is provided therein with a part of a cooling temperature range where ozone can be selectively condensed or an oxygen gas can be selectively removed by transmission from an ozonized oxygen gas, and a part of a temperature range where condensed ozone can be vaporized, and condensed ozone is vaporized by moving condensed ozone with flow of a fluid or by gravitation to the part where condensed ozone can be vaporized, whereby the ozonized oxygen gas can be increased in concentration. Such a constitution is provided that a particle material 13 for condensation and vaporization filled in the ozone concentrating chambers 11 and 12 has a spherical shape of a special shape with multifaceted planes on side surfaces, or an oxygen transmission membrane 130 capable of selectively transmitting an oxygen gas in an ozone gas is provided.

The method for removing mercury from a flue gas stream of the present invention is comprised of first treating a sorbent with a metal halide, and then contacting a sufficient amount of the sorbent with a gas stream for a sufficient amount of time to bind with a desired amount of the mercury in said gas stream. The metal is selected from Groups I and II of the periodic table of the elements. The halide is selected from the group consisting of I, Br, Cl. The metal halide comprises from about 0.5% to 25% by weight of said treated sorbent.

A composite adsorption material for removing As from water is prepared from activated carbon and iron oxide through washing activated carbon by water, heating, drying, adding it to nitric acid, stirring, laying aside, water washing, drying, dissolving FeSO4*7H2O in water, adding it to NaOH solution, stirring to generate iron oxide deposit, using NaOH to regulate pH=9-10, water washing, adding lauric acid, dripping NaOH while stirring, heating to make pH=4-5, mixing said activated carbon with the suspension of iron oxide, and stirring. It has high capacity, selectivity, adsorptivity and mechanical strength.

The invention belongs to the field of synthesis of nano materials, relates to the preparation of graphene/mesoporous oxide series of nano composite material, and particularly relates to a preparation method and application of graphene/cellulose/titanium dioxide composite material. The graphene/cellulose/titanium dioxide composite material is prepared by preparing graphite oxide by utilizing an improved Hummers method, carrying out ultrasound to obtain graphene oxide, reducing graphene oxide into graphene by using sodium borohydride; and finally uniformly mixing cellulose, titanium dioxide, a surface active agent (hexadecyl trimethyl ammonium bromide) and grephene. According to the invention, the synthesis method is simple, the prepared graphene/cellulose/titanium dioxide composite material is taken as an adsorbent, and a malachite green dye solution is taken as an adsorption object, the experiment shows that the composite material has an excellent adsorption removal effect. The composite material is applied to the treatment of dyes in sewage water, has the advantages of simplicity in operation, convenience, easiness in availability, high adsorption rate and the like, and has good industrially practical value.

The present invention provides a regenerable catalyst composition suitable for entrapping SO_x. The composition of the invention comprises a copper oxide having the formula (Cu/(A oxide) where A oxide is SiO₂, Zr—SiO₂, A1₂O₃, TiO₂—Al₂O₃, ZrO₂ and In₂O₃ or mixtures thereof. Copper loading may vary from about 10 to 60 mol % and is preferably about 25 mol %. The catalyst composition adsorbs SO_x as metal sulfate under lean conditions and desorbs accumulated SO_x as SO₂ under rich conditions. Such reversible SO_x trap are able to operate under conventional NO_x trap operating conditions to prevent sulfur poisoning of the NO_x trap. Furthermore, these traps may be regenerated under rich conditions at 300-450° C. In another embodiment of the present invention, an irreversible SO_x trap capable of collecting SO_x under lean conditions is provided. The traps of this embodiment include praseodymia, zirconia-praseodymia and mixed manganese-yttria and mixtures thereof.

A filter element, including a filter body having an inflow side and outflow side, the filter body being constructed in layers, at least one layer including granular adsorbents and at least one further layer including activated carbon fibers. The filter element may be used in a filter system which ensures optimum utilization of the load capacity of the filter element used in that a first layer, which includes activated carbon fibers is assigned to the inflow side and a second layer, which includes granular adsorbents, adjoins this layer on the outflow side. A filter system includes the filter element.

The present invention discloses conducting lithium gel film containing porous polymer skeleton and its preparation process. The preparation process includes following steps: 1. preparing porous polypropylene glycol modified polyvinylidene fluoride or polyether sulfone film through phase conversion; 2. preparing electrolyte through mixing carbonate, lithium salt, polyglycol and diisocyanate at 10-20 deg.c; 3. soaking the porous film in the electrolyte at 10-20 deg.c for 10-30 min; and 4. treating electrolyte adsorbing porous film at 60 deg.c for 8-10 for cross-linking to form gel. The conducting lithium gel film has high strength, stable shape, high lithium salt electrolyte loading amount and conductivity of 10<-3>-10<-2> S/cm, and is suitable for use in polymer lithium cell with integrated diaphragm and electrolyte.

A shower-type duster is composed of composed of a casing with air inlet, a partition for dividing the cavity in the casing into showering cavity and airflow cavity, a wind-gathering bulkhead for dividing the showering cavity into front and back showering cavities, two filters arranged in two channels between airflow cavity and front and back showering cavities, and two showering nozzles for both showering cavities.

The present invention relates to a preparation method of iron-carrying active carbon arsenium-removing adsorbing agent. It is made up by using active carbon and iron oxide through a compounding process. Said process includes the following steps: weighing Chinese Datong raw coal, iron oxide and adhesive according to the mixing ratio of 12-9:3-1:1-0.4, grinding raw coal into coal powder, mixing the coal powder with iron oxide, adding adhesive, forming, charring under the condition of that anoxybiotic temperature is 300-500deg.C and making activation at 850-950deg.C so as to obtain the invented arsenium-removing adsorbing agent.

The invention provides a preparation method for a novel graphene polyion liquid composite material. The method comprises the following steps of 1, preparing graphene oxide; 2, preparing ionic liquid 1-[(2-methylacryloyl)-ethyl-3-(MEBIm-Br); 3, using the 1-[(2-methylacryloyl)-ethyl-3-(MEBIm-Br) as imidazole ionic liquid to obtain the novel graphene polyion liquid composite material (rGO-poly-MEBOm-B and rGO-poly-MEBIm-Br). The obtained novel graphene polyion liquid composite material not only can be applied to the aspects of biological sensors, super-capacitors and the like and but also has the good performance on the aspects of adsorbing and separating pollutants.

The invention discloses a comprehensive washing remediation method for heavy metal contaminated soil. The comprehensive washing remediation method comprises the following steps: ploughing and smashing soil, applying acid and alkaline washing agent solid materials, then drawing water when ploughing, washing and dissolving heavy metal out of the soil, and transferring the heavy metal into washing water; guiding the washing water into a sedimentation tank, adding a coagulant, and removing the heavy metal in the washing water through coagulation and sedimentation; draining the washing water into a microorganism and biochar purifying tank, utilizing biochar bags to absorb the heavy metal, and at the same time, enriching the heavy metal through microorganisms on biochar surfaces; and collecting used biochar bags, adding a dilute acid solution into the biochar bags, stirring, and separating the heavy metal absorbed to the biochar surfaces. The invention further discloses a corresponding comprehensive washing remediation system. The technical scheme of the invention greatly increases the absorption rate of the heavy metal, avoids heavy metal secondary pollution, is simple in technical process, is high in automation degree and is low in cost.

The invention disclosed a porous solid supported ionic liquid and application thereof in adsorption of HCl gas, the porous solid supported ionic liquid comprises a porous solid support and an ionic liquid supported on the support, the porous solid support is activated carbon, mesoporous carbon, carbon nanotubes, silicon oxide, aluminum oxide, titanium oxide, a molecular sieve, a metal organic framework compound or a covalent organic framework compound; the ionic liquids is imidazole, pyridine, quaternary phosphonium and pyrrolidinium ionic liquid, the Ionic liquid loading amount is 1 to 50% based on the mass of the porous solid support. The porous solid supported ionic liquid can be used for adsorbing of the HCl gas, and is used in typical occasions for adsorbing of the HCl gas in industrial exhaust gas of vinyl chloride synthesis by HCl/C2H2 mixed gas and ethyne hydrochlorination for enriching or separating recovering of the HCl. The adsorption rate of the HCl is up to 99.97%, and thepurity of HCl thus obtained is high, up to 99.999%.

The invention discloses a method for preparing magnetic adsorbents on the basis of iron-based metal-organic framework materials and application of the magnetic adsorbents. The method includes preparing La-doped nanometer Fe3O4(La-Fe3O4) by the aid of solvent-thermal processes and then wrapping the surfaces of the nanometer Fe3O4(La-Fe3O4) with metal-organic framework materials MIL(Fe) to obtain magnetic composite materials La-Fe3O4@MIL(Fe); applying the magnetic composite materials La-Fe3O4@MIL(Fe) to absorbing and removing phosphate in water. The method and the application have the advantages that phosphate radicals in the water can be efficiently adsorbed and removed by the magnetic adsorbents, the magnetic adsorbents are environmentally friendly, are easy to recycle and are reusable, equipment for implementing the method is simple and is convenient to operate, and accordingly the method has an excellent application prospect.

The invention discloses a side exhaust Venturi paint spraying chamber. The chamber comprises a dynamic pressure chamber, a workshop, an air supply device, an air flow guide device, a waste paint adsorption device, a waste paint catching device and an exhaust device, wherein a grid plate is arranged at the bottom of the workshop; the waste paint adsorption device comprises a waste mist generation device; the water mist discharge end of the waste mist generation device is connected with a water mist conveying channel; a spraying device is arranged in the water mist conveying channel; a sewage collection device is arranged on the lower part of the spraying device; and the exhaust device is arranged at the outlet of the water mist conveying channel. The waste mist generation device can atomize a large amount of water, so that the capacity of adsorbing paint mist is enhanced; and the spraying device intercepts most of waste paint-containing waste mist in the sewage collection device when water mist on which waste paint is adsorbed is discharged through the water mist conveying channel, and the residual paint mist-doped air passes through the waste paint catching device and is intercepted for the second time when continuously discharged, so that the rate of adsorbing the paint mist is further improved, and the environment is protected.

The invention discloses a preparation method of a bamboo modified active carbon adsorbent for processing phenol wastewater. With Moso bamboo being used as a raw material, the preparation method comprises four steps of bamboo carbonization, grinding and sieving, soda acid processing, high temperature activation and the like. By controlling the concentration of an acid-base solution for immersing active carbon and controlling a series of physical and chemical treatment processes such as high temperature activation temperature and time of active carbon, the bamboo-based active carbon is optimized and the modified active carbon adsorbent which can efficiently adsorb phenolic compounds and has a good effect of adsorbing phenolic compounds with the adsorption rate being as high as 80%.

The invention discloses a preparation method of a phase-change energy-storage material. The preparation method comprises the following steps: modifying fly ash with an organic acid, and then preparing the phase-change energy-storage material from the organic acid modified fly ash, a phase-change substance, and a heat-conductive performance modifier. The preparation method takes cheap fly ash as the raw material, then uses an organic acid to modify the fly ash so as to enlarge the pore volume of the fly ash, at the same time the carrier frame is not damaged; furthermore, part of the organic acid will be embedded into the frame mainly made of fly ash to strengthen the frame, so the phase-change substance absorption rate of an energy-storage material made of the modified fly ash can reach 65% or more, and the usage period is prominently prolonged.

The invention discloses a trace antibiotic efficient enrichment and separation method in a water environment. The adsorption performance of magnetic graphene on tetracycline antibiotics under different adsorption conditions is studied, and the change of the antibiotic concentration in solution before and after the adsorption is detected by an ultraviolet spectrophotometer, so that the corresponding adsorption rate of the antibiotics and the magnetic graphene adsorption capacity are calculated. The influence of different factors on the adsorption performance of the antibiotics is investigated; the optimum adsorption condition is obtained; the adsorption effect mechanism is analyzed; the adsorption kinetics and adsorption thermodynamics are discussed. According to the method, tetracycline hydrochloride TC is adopted as the research object, and the adsorption characteristics of MGO on the TC under different factors of the solution pH, temperature, dissolved organic matter (taking humic acid as an example) and the like are systemically studied, in particular to the adsorption kinetics and adsorption thermodynamics of the MGO on the TC.

The invention relates to the technical field of heavy metal ion adsorption and particularly relates to a method for preparing magnetic biochar. The method disclosed by the invention comprises the following steps: dissolving iron chloride hexahydrate into ethylene glycol, adding a sodium acetate solution and polyethylene glycol to obtain a viscous liquid, placing a magnet into the liquid to obtaina ferroferric oxide magnetic nano powder, washing and drying black filter residues, doping absolute ethyl alcohol, ammonium hydroxide and ethyl orthosilicate to obtain a mixed solution, dispersing themagnetic nano powder coated with single-layer silica, a poplar wood powder, biochar and other raw materials into acetone to react so as to obtain a dispersed suspension; mixing and drying the dispersed suspension and polyvinyl alcohol, grinding and screening, so as to obtain the magnetic biochar. The specific surface area of the magnetic nano powder is enlarged by utilizing the effects of cetyl trimethyl ammonium bromide, the adsorption rate of heavy metal ions is improved, the silica on the surface of the magnetic nano powder is capable of preventing corrosion by acid and alkali and attracting the heavy metal ions in an acidic environment along with directional migration of the magnetic nano powder, and the application prospects are wide.

The invention relates to a method for treating waste water containing vanadium and chromium. The method comprises the following steps of: (1) adsorption: adopting an adsorbing medium to adsorb vanadium and chromium ions in the waste water containing vanadium and chromium; (2) desorption: adding a desorption agent into the adsorbing medium containing vanadium and chromium ions obtained in the step (1) to carry out desorption; (3) vanadium precipitation: adding alkaline substances into desorption solution, stirring to be uniform, and then filtering to obtain a calcium-vanadate product and vanadium-precipitated supernant; (4) chromium crystallization: carrying out evaporating concentration and cooling crystallization on the vanadium-precipitated supernant to obtain a sodium-chromate crude product and crystallizing mother liquor; (5) recrystallization: heating and dissolving the sodium-chromate crude product, and carrying out cooling crystallization to obtain a sodium-chromate product and cooling-crystallizing mother liquor; and (6) returning of the crystallizing mother liquor: returning the crystallizing mother liquor to the step (2) as the ingredient of the analysis solution to be repeatedly utilized. The method has the advantages that the recovery rate for the vanadium and chromium elements in the waste water reaches 99.9% or higher, simultaneously high-purity calcium vanadate and sodium chromate are obtained, and no waste water and waste residue are generated in the whole process.

The invention relates to a nanocomposite, in particular to a magnetic chitosan/nano Fe3O4 composite and a preparation method and application thereof. The composite comprises 60-99% of chitosan and 1-40% of nano Fe3O4. The preparation method includes: preparing chitosan solution A from acid solution; preparing solution B from NH4Fe(SO4)2 and (NH4)2Fe(SO4)2; adding the solution B into the solution A for reaction to obtain orange flocs; and reacting in ammonia gas so that the brown chitosan/nano Fe3O4 composite is obtained. By means of preparation by ammonia fumigating reaction, the nano Fe3O4 is obtained by aggregating nanoparticles with the particle size of 3-7nm to Fe3O4 nanoclusters with the particle size of 30-70nm, and the Fe3O4 nanoclusters are uniformly dispersed in a chitosan matrix. The magnetic chitosan/nano Fe3O4 composite has the advantages of large specific surface area, capability of being used for wastewater and waste gas treatment, rapidness in adsorption, high adsorption rate and capabilities of being isolated by the aid of a simple and convenient magnetic process and an adsorption system and being used as contrast agents.