121results about How to "Good adsorption performance" patented technology

The invention relates to a composite type mercury ion adsorbent and a preparation method thereof. The adsorbent consists of chitosan, polyvinyl alcohol and clay. A polyvinyl alcohol macromolecular chain and a chitosan macromolecular chain are penetrated and wound mutually by high-speed stirring, so that the inorganic clay is dispersed fully; and the release of the chitosan and the polyvinyl alcohol in the process of using the adsorbent is avoided effectively by a method of combining cross linking agent cross linking and freezing crossing linking of glutaraldehyde. The adsorbent has high adsorption capacity and high adsorptive selectivity on Hg(II) ions, hardly adsorbs Cd(II) and Pb(II) ions, and adsorbs a small amount of Cu(II) ions, and can be recycled, and adsorbability of the adsorbentis slightly influenced by the pH value of a solution. The integral preparation process is performed in an aqueous solution, the preparation method is simple and convenient, low in energy consumption,low in production cost, environment-friendly, and easy to industrialize, and special process equipment is avoided.

An impregnated activated carbon for removing the harmful gases including H2S, SO2, NO2, O3, organic ammonia and VOCs is prepared through preparing the impregnating solution from Cu, K, Na, I and OH ions, proportionally impregnating the activated carbon in it, drying in the O2 content controllable air flow at 130-180 deg.C, and activating.

An adsorptive catalyst for treating the benzene contained sewage contains Cu (1-5 Wt%), auxiliary component (1-5) chosen from K, Zn and Ce, and activated carbon (85-98 Wt%) as carrier. Its application includes such steps as passing said sewage through said catalyst while adsorbing, drying, filling oxidizing gas and reaction.

The invention provides an amidoximated polyacrylonitrile spinning solution and a nanoscale ion exchange fiber prepared from the solution, and belongs to the technical field of nanoscale ion exchange fiber preparation. A preparation method comprises the steps that hydroxylamine hydrochloride (or organic polyamine) and a catalyst are added into a polyacrylonitrile solution, reacting under stirring is performed for 2-5 h at the temperature of 60 DEG C-120 DEG C, the temperature is lowered to room temperature, and filtering is performed to obtain an amidoximated polyacrylonitrile solution; a crosslink inhibitor is added into the amidoximated polyacrylonitrile solution, the mixture is stirred to be uniform to obtain the amidoximated polyacrylonitrile spinning solution, the amidoximated polyacrylonitrile spinning solution is prepared into a nanofiber membrane by adopting an electrospinning technique, and the nanofiber membrane is subjected to aftertreatment to obtain the nanoscale ion exchange fiber which can be used for adsorbing harmful substances in water. The method is simple and effective, the spinning solution which is stable in viscosity and cannot generate gel is obtained, and the nanoscale ion exchange fiber which has the good adsorption capacity on heavy metal ions is prepared by taking the spinning solution as the raw material.

The invention particularly relates to an industrial waste gas purification device using a novel waste gas absorbent. The purification device comprises an absorption tower and a packing tower, whereina waste gas inlet and a liquid water outlet pipe are formed and arranged at the lower part of the packing tower; a purified gas outlet is formed at the upper part of the packing tower; a liquid waterinlet pipe is arranged at the top of the packing tower; an outlet of the absorption tower is connected with one end of the waste gas inlet, so that the waste gas exhausted from the absorption tower enters the packing tower through the waste gas inlet; the packing tower internally provided with at least one baffle; circular through holes are formed in the baffles; and packing rings with biologicalmembranes are stacked on the baffles to form a packing layer. The device shows excellent absorbability for the organic waste gas, particularly the waste gas containing organic pollutants such as benzene, methylbenzene, polyaromatic hydrocarbon, organic sulfide and organic chloride.

The invention provides a method for preparing an adsorbent for removing mercury ions, lead ions, and other heavy metal ions from waste water. The method comprises the following steps of: dissolving a silane coupling agent KH-550 in alcohol, and then adding a certain quantity of roasted mesoporous molecular sieves MCM-41; refluxing for 6-12 hours in a water bath at 60-80 DEG C; centrifuging and separating a product, and then washing with alcohol; and drying in vacuum at 40-80 DEG C to obtain the aminopropyl functional MCM-41. The invention has the characteristics of simple process, low raw material price, safety and low required equipment cost. The adsorbent has a three-dimensional pore canal structure and has excellent adsorption effect on the mercury ions and the lead ions in the waste water.

The invention relates to a bilirubin adsorbent for blood perfusion. The bilirubin adsorbent is based on a molecular imprinting principle, oligomeric macromolecules and the like which have the molecular weight similar to that of human serum albumin are taken as pore-foaming agents, polystyrene-divinyl benzene is taken as a basic framework, and the bilirubin adsorbent with oversized aperture and high specific surface area is prepared according to a free radical suspension polymerization method. The bilirubin adsorbent not only has ultrahigh specific surface area, but also has a pore passage suitable for the free diffusion of bilirubin conjugated with albumin, and has a good adsorbing effect on the conjugated and non-conjugated bilirubin. Furthermore, compared with the traditional bilirubin adsorbent, the bilirubin adsorbent for blood perfusion has the characteristics of being simple in preparation technology, good in biocompatibility, large in adsorption capacity, and free from risk of electrolyte disorder, thus being not only used for plasma perfusion, but also used for removing the bilirubin by all-blood perfusion.

The invention discloses sulfydryl-phenyl thiosemicarbazide chitosan modified zeolite as well as preparation and applications thereof, which belong to the technical field of wastewater treatment. According to the invention, phenylhydrazine and thiourea are introduced to chitosan especially by taking chloromethylthiirane as a crosslinking agent, and then the organic modified chitosan is loaded on zeolite so as to obtain novel sulfydryl-phenyl thiosemicarbazide chitosan modified zeolite. According to the invention, the application of a traditional method implemented by introducing a perchloric acid with extremely strong oxidability and corrosivity into thiocarbamide is avoided, and a broad-spectrum wastewater adsorbent with dual structure characteristics of zeolite and chitosan and good adsorption properties is developed; the production cost is greatly reduced; and a new thought and a new method are provided for the treatment of industrial wastewater.

An attapulgite flue gas desulfurizer is prepared from the following raw materials by weight: 100-120 parts of attapulgite, 40-45 parts of active carbon, 20-24 parts of magnesium chloride, 4-5 parts of zinc oxide, 25-28 parts of calcium oxide, 6-8 parts of sodium carbonate. 20-24 parts of wild chrysanthemum flowers, 10-12 parts of cordate houttuynia, 35-40 parts of monazite powder, 5-7 parts of sodium metasilicate, 3-4 parts of coconut fatty acid monoethanolamide, 4-5 parts of auxiliary agents, and a proper amount of water. By using attapulgite and monazite powder, the desulfurizer of the invention has adsorption decoloration and ion exchange effects, has good adsorption effect on sulfur dioxide, decreases the using amount of active carbon, and reduces the cost; by using wild chrysanthemum flowers and cordate houttuynia, the desulfurizer of the invention not only has adsorption effect, but also has antibacterial effect after carbonization; by using a plurality of basic metal oxides, rapid desulfurization is realized; the desulfurizer of the invention is high in porosity, large in adsorption quantity, easy to regenerate, and simple in production process, and can greatly reduce the operation cost of dry-method desulfurization.

The invention provides a conditioning agent for heavy metal contaminated soil. The conditioning agent for heavy metal contaminated soil is prepared from the following raw materials in parts by mass: 50-60 parts of modified activated carbon, 15-24 parts of humic acid, 4-12 parts of a compound microbial agent, 9-15 parts of sodium sulfide, 12-19 parts of monopotassium phosphate, 8-20 parts of diatomite, 6-12 parts of calcium oxide, 10-20 parts of modified zeolite and 15-20 parts of an organic fertilizer; wherein the modified activated carbon is obtained by performing reduction modification on aferric salt with activated carbon; the modified zeolite is obtained by acidifying and thermally activating natural zeolite. The invention further provides a preparation method of the conditioning agent for heavy metal contaminated soil. The conditioning agent for heavy metal contaminated soil is simple in preparation process, mild in condition, capable of adsorbing and fixing heavy metal in soil and improving the soil structure and good in remediation effect.

The invention discloses an activated carbon supported nanometer iron oxide adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking activated carbon as a carrier, performing simple dipping, alkali blending and calcining, and successfully supporting nanometer iron oxide onto the activated carbon surface and pore channels, thereby obtaining the activated carbon supported nanometer iron oxide adsorbent. The activated carbon supported nanometer iron oxide adsorbent disclosed by the invention is capable of synchronously and effectively removing heavy metal anions, heavy metal cations and antibiotics in drinking water, and has excellent adsorption performance for synchronously remvoving Cr(VI), Cd(II) and antibiotics, so that the efficiency of the activated carbon in the drinking water treatment field is improved, the drinking water adsorption and treatment process is simplified, and the safety of the drinking water isensured.

The invention relates to the technical field of preparation of an environmental material, in particular to a yeast surface atom transfer imprinted adsorbent, and a preparation method and application thereof. The preparation method comprises the following steps of: through the atom transfer radical polymerization process, firstly, loading an initiator into a yeast surface to obtain a matrix material with the initiator; and then preparing the yeast surface imprinted adsorbent by using cefalexin as template molecules, using methacrylic acid (MAA) as a functional monomer, using ethylene glycol dimethacrylate (EGDMA) as a cross linking agent and using CuCl as a catalyst. The spherical imprinted adsorbent has obvious thermal and magnetic stability. The research on the effect between the template molecules and the functional monomer by ultraviolet rays shows that the acting force exists. A static adsorption experiment is used for researching the adsorption equilibrium, the dynamics and the selective recognition performance of the prepared imprinted adsorbent. A result shows that the yeast surface imprinted adsorbent obtained by utilizing the preparation method disclosed by the invention has high adsorption capacity, high-speed adsorption dynamics property and obvious cefalexin molecular recognition performance.

The invention relates to a method of regenerating used oil by adopting antibiotic waste mushroom dreg biomass charcoal. The method comprises the following steps: 1) sterilizing and dehydrating antibiotic waste mushroom dregs to prepare waste mushroom dreg biomass charcoal or biomass active charcoal; 2) standing and layering the used oil, removing water at the lower layer and then filtering out solids and suspended solids to obtain the treated used oil; and 3) adding the used oil into the waste mushroom dreg biomass charcoal or biomass active charcoal, heating for reaction, and settling and carrying out suction filtering to obtain the regenerated oil. The method provided by the invention has the advantages that the biomass charcoal or biomass active charcoal prepared by antibiotic waste mushroom dregs has high specific surface area and good adsorptive property, solves the problem in disposal of waste mushroom dregs and realizes recycling of resources; a good decolorising agent is developed for the used oil, and the transmittance of the regenerated oil can reach 45-85%; recycle, reduction and harmless treatment of waste mushroom dregs and used oil are realized, so that the method has remarkable economical and social values.

The invention relates to an adsorbent and a preparation method thereof and particularly relates to an adsorbent for absorbing heavy metal ions and a preparation method thereof. The adsorbent for absorbing the heavy metal ions comprises the following components in parts by weight: 5-9 parts of calcium, 6-8 parts of aluminum, 15-20 parts of SBA (Santa Barbara amorphous material)-15 molecular sieves, 15-35 parts of bentonite and 10-20 parts of rectorite. The adsorbent provided by the invention has an excellent adsorptive property; and when the adsorbent is used for absorbing chromium ions in water, the adsorption rate can reach 97.6%.

The invention provides a plant granular aromatic bead and preparation method and application thereof. Dried aromatic plants are ground into a certain mush number of powder, and mixed with nano-calcium carbonate, corn modified starch, water-soluble chitosan, degummed hemp fiber powder and water to obtain a wet material; the wet material is dried after granulation forming, the whole round polishing and atomizing aromatic flavoring steps are carried out after the wet material is dried, the plant granular aromatic bead with regular roundness and size is obtained. The plant granular aromatic bead is added when filament bundles of a filter rod are formed. After the filter rod is formed, the aromatic bead is located in the center of the filter rod and wrapped by the filament bundles. The filter rod is made into cigarettes, harmful substances such as tar content in cigarette smoke are reduced, meanwhile the aroma of the cigarettes is increased, and further rich aroma of cigarette products is provided to meet the pursuit of cigarette aroma of consumers.

The invention relates to a method using SiO2-CoO composite aerogel as the absorbent to remove thiophene sulfur in gasoline and belongs to the technical field of gasoline processing. The method includes: filling the SiO2-CoO composite aerogel into a fixed bed absorption device, and feeding simulated gasoline containing thiophene or benzothiophene under certain airspeed; collecting the absorbed simulated gasoline at the lower outlet of the reactor, and performing gas chromatography. The gas chromatography result shows that the SiO2-CoO composite aerogel can well absorb the thiophene and benzothiophene. The SiO2-CoO composite aerogel absorbent is simple to prepare, low in cost, reusable, convenient to operate, environmental friendly, high in economic benefit, mild in absorption condition and low in absorption equipment requirement.

The invention discloses a method for preparing hydrothermal biomass charcoal from pecan shells. The method includes the steps that the pecan shells are smashed into 60-80-mesh pecan shell powder, a hydrothermal reaction is conducted on the pecan shell powder under the strong acid condition, and the hydrothermal biomass charcoal is prepared; the obtained hydrothermal biomass charcoal is activated through inorganic base, and an activated hydrothermal biomass charcoal adsorption material is obtained. The method is simple in technology, low in raw material cost and large in adsorption amount. The prepared adsorption material can be applied to adsorption treatment of cationic dye, and a good treating effect is achieved. According to the method, pecan shell resources are recycled, a low-cost and efficient novel adsorbing agent is obtained, and the development of the environment-friendly event is promoted.

A coating formulation is disclosed that is capable of imparting, onto the treated substrate, an excellent adsorption performance, good print appearance, and enhanced rub-off resistance. Furthermore, the disclosed formulation has good ink stability and offers high quality print appearance throughout long printing runs of high speeding printing applications. The formulation comprises an activated carbon having a particle size of less than 1 micron and a binder, wherein an amount of the binder by weight is in a range of about 30 parts to 100 parts per 100 parts of the activated carbon, and the formulation has a dry basis BET Surface Area of greater than 100 m2 / g.

The invention provides a preparation method of a titanium dioxide-mesoporous polymer nano porous composite visible light catalytic material, which comprises the following steps: a. polymerizing azodiisobutyronitrile used as initiator, divinylbenzene used as a crosslinking monomer, 4-vinyl pyridine or 1-vinyl imidazole used as a functional monomer and n-butyl titanate used as a titanium source under solvothermal conditions at 80-140 DEG C for 12-24 hours, thus obtaining a bulk polymer solid; and b. placing the polymer solid product into a reaction kettle, adding a right amount of water, and performing hydrothermal treatment at 150-180 DEG C for 10-24 hours, thus obtaining the titanium dioxide-mesoporous polymer multistage nano porous composite visible light catalytic material. The material preparation method is simple; the obtained photocatalyst has excellent enriching effect and catalytic degradation activity on organic pollutants, especially decabromobisphenol A; and the bulk shape is beneficial to the recycling of the catalyst in the use process.

The invention provides a method for preparing modified activated carbon at normal pressure. The method comprises the following steps of: mixing dried straws with calcium acetate solution for reacting, thereby obtaining a first-order precursor, and further mixing the first-order precursor with zinc chloride solution for reacting, thereby obtaining a second-order precursor, and finally, performing sintering to obtain bulk activated carbon. The method provided by the invention is capable of synthesizing the modified activated carbon by one step through thermal treatment at normal pressure with the agricultural waste straws as raw materials and calcium acetate and calcium acetate as activators.

The invention discloses a method for preparing regenerated-cellulose and sodium-humate blended large-pore adsorption gel.The method includes the steps that a sodium alginate solution is dropwise added into a homogeneous mixing system of Span 80 / cyclohexane / a calcium chloride solution to form calcium alginate microparticles; meanwhile, dry cellulose powder is dissolved into low-temperature sodium hydroxide (or lithium hydroxide) / urea (or thiourea) liquid, the mixture is centrifuged and defoamed, residues are removed, and cellulose dissolved clear liquid is obtained; sodium humate is dissolved into the clear liquid, the calcium alginate microparticles continue to be added, epoxy chloropropane is added for etherification crosslinking after even dispersing, obtained gel is soaked into a sodium citrate solution, calcium alginate particles are removed, and the regenerated-cellulose / sodium-humate blended gel is prepared.The obtained gel is in a micropore block shape and has high adsorption capacity for heavy metal ions such as Pb2+ and Cu2+ and organic dye such as Congo red and methyl violet.The gel is a natural macromolecule mixture and belongs to 'environment-friendly' adsorption materials.

The invention provides a composite aerogel material and a preparation method, multifunctional recycling method, multifunctional composite aerogel material and application thereof. By adopting the combination of a water-soluble high-molecular polymer and a nanowire, an organic-inorganic composite aerogel material rich in multi-active sites shows the excellent adsorption performance of heavy metal ions. Complex production equipment is not needed, the method is simple and easy to implement, the time and labor are saved, and industrial large-scale production is easy to achieve. Accordingly, on the overall design ideas, the purpose of aiming at design of a new structure and performance study of materials is achieved, the subsequent processing process and the reuse angle of the material are created, composite aerogel absorbed with the metal ions is converted into a functional material, the new function of the material is further performed, requirements in multiple aspects are met, multistage utilization of the material is embodied in the overall technical scheme, and then the use efficiency and the recycling series are improved.

The invention provides oil-absorbing carbon sponge and a preparation method thereof. The method comprises the following steps: putting sponge into oxidized graphene with a known concentration, and carrying out ultrasonic dispersion to obtain graphene oxide coated melamine sponge; freeze-drying the graphene oxide coated melamine sponge: completely freezing the graphene oxide coated melamine spongeinto ice at the temperature of -70 DEG C, then placing the frozen product in an environment under the vacuum condition of 1Pa, and carrying out vacuum drying for 36-72h; calcining for 1-5h at the temperature of 150-400 DEG C in the reducing atmosphere so as to obtain the graphene-based carbon sponge. The preparation method utilizes the graphene oxide modified melamine carbon sponge to obtain the superhydrophobic graphene-based carbon sponge, thus not only reducing the consumption of graphene oxide and further reducing the production cost, but also being simple in process; the obtained graphenecarbon sponge more effectively combines the advantages of graphene and three-dimensional macro-commercial sponge, thus having better absorption performance, excellent mechanical properties and more superior hydrophobic property.

The invention provides a tetrasiloxane dimeric surfactant containing sugar acylamino and a preparation method and belongs to the technical field of organic compound composition. The tetrasiloxane containing sugar acylamino is a compound obtained in a bonding reaction through silicone, oxygen, nitrogen or carbon in molecules; the preparation method comprises the following steps: propyl chloride tetrasiloxane is prepared by hexamethyldisiloxane and chloride propyl silane at presence of an acid catalyst; N-Beta-ammonia alkyl-Gamma-aminopropyl tetrasiloxane is prepared by propyl chloride tetrasiloxane and alkyl diamine; the tetrasiloxane containing sugar acylamino is prepared by N-Beta-ammonia alkyl-Gamma-aminopropyl tetrasiloxane and saccharic acid or saccharic acid internal ester in a lower alcohol solvent and then diglycidyl ether is added to obtain the tetrasiloxane dimeric surfactant containing sugar acylamino. The tetrasiloxane dimeric surfactant containing the sugar acylamino cannot be hydrolyzed in the water with 6 months and can be widely applied in the fields of pesticides and the like.

The invention discloses a method for preparing a cerium dioxide / calcium aluminum layered di-hydroxy composite metal oxide / activated carbon composite material. The method is as below: conducting vacuum-pumping on activated carbon under certain temperature; then quickly adding a reaction solution, so that the reaction solution quickly immerses in the internal part of activated carbon under the effect of atmospheric pressure difference; codcnuting ultrasound assisted precipitation for one-step rapid synthesis of the CeO2 / CaAl-LDHs / AC composite material. The CeO2 / CaAl-LDHs / AC composite material of the invention not only has excellent absorption performance on common pollutants such as chromium, lead, fluorine and malachite green in water, but also is convenient for operation, easy for separation, and high in thermal stability.

The invention relates to a preparation method of modified cellulose aerogel adsorbing heavy metal and belongs to the technical field of natural polymer modified materials. The preparation method comprises steps as follows: corn stalks are air-dried, peeled and cut, and a qualified corn stalk core raw material is obtained; the qualified corn stalk core raw material is subjected to lignin removing with acidic sodium chlorite, and then corn stalk core cellulose is extracted by an aqueous potassium hydroxide solution; obtained corn stalk core cellulose is heated and dissolved by a metal solution,a dissolved solution is dropwise added to ethanol bath, and cellulose aerogel is formed by regeneration; the cellulose aerogel is modified through graft copolymerization, after the reaction is completed, a product is subjected to impurity removing, purified and dried, and then the modified cellulose aerogel adsorbing heavy metal is obtained. According to the preparation method, the corn stalks which are easily available but not developed thoroughly are taken as the raw material, corn stalk core cellulose is extracted, the cellulose aerogel is prepared with dissolving and regenerating technologies, and the modified cellulose aerogel adsorbent is obtained by graft copolymerization.

The invention discloses a preparing craft of high-effective honeycomb catalyst carrier, which comprises the following steps: grinding natural zeolite into powder bulk, injecting in the dilute hydrochloric acid to stir evenly, stewing, bleaching the zeolite to neutral through water, adding pottery clay, composite rare earth oxide and cellulose methyl in the zeolite powder, blending evenly in the vacuum pitching machine, squeezing to obtain the honeycomb semi-conductor, placing the honeycomb semi-conductor in the activated furnace, drying at low temperature, heating to 500-600deg.c, cooling to obtain the product.

The invention discloses a preparation method of black phosphorene / corn stalk core holocellulose ether mixed gel. The method comprises the following steps: peeling, grinding and screening an air-dried corn stalk to obtain a qualified raw material, dissolving in a low-temperature lithium hydroxide (sodium hydroxide) / thiourea (urea) mixed solution to extract a holocellulose, adding a cationic etherifying agent (2,3-epoxypropyltrimethyl ammonium chloride or 3-chlorine-2-guar hydroxypropyl-trimonium chloride) into a purified holocellulose solution, dissolving, heating to implement an etherification reaction, then adding black phosphorene, evenly mixing, adding dropwise in an absolute methanol / sulfuric acid mixed bath to form a solid gel, cleaning, and drying to obtain the black phosphorene / corn stalk core holocellulose ether mixed gel. The prepared gel take the shape of a black round sheet, has a high capability of adsorbing dimethylarsinic acid and methanearsonic acid, is biologically degradable, and belongs to an environmentally friendly organic arsenic absorbing material.

The invention discloses a wearproof cable material with low cost and long service life. The wearproof cable material is prepared from, by weight, 30-40 parts of polypropylene, 10-20 parts of polyvinyl chloride, 5-15 parts of epoxy resin, 1-2 parts of beta-hydroxyethylenediamine, 1-3 parts of carboxymethylcellulose, 1-3 parts of epoxidized fatty acid methyl esters, 2-6 parts of modified bentonite, 1-2 parts of talcum powder, 5-8 parts of nano-graphite, 1-2 parts of castor oil, 1-2 parts of dinonyl phthalate, 1-3 parts of disproportionated rosin, 1-2 parts of microcrystalline wax, 1-2 parts of acetyl tributyl citrate, 0.5-1.2 parts of phosphate ester, 0.1-0.6 part of color master batch, 1-2 parts of antioxidant, and 1-3 parts of antistatic agent. The wearproof cable material with the low cost and the long service life has excellent light fastness, heat-resistant and ageing-resistant performance; meanwhile, the wearproof cable material with low cost and long service life is high in mechanical strength, good in wearproof performance and low in cost.

The invention discloses a preparation method of bamboo charcoal non-woven fabric. The method comprises the steps of firstly, cutting bamboo into bamboo chips, then carrying out carbonization treatment on the bamboo chips, and micronizing charcoal powder; mixing polypropylene, nano-carbon powder, a dispersing agent and a compatibilizer, extruding and granulating to obtain bamboo charcoal polymer master batches; then, mixing the polypropylene, the bamboo charcoal polymer master batches, a stabilizing agent and an antioxidant, extruding and granulating to obtain mixture master batches; adopting a melt-blowing technique to prepare the mixture master batches into primary non-woven fabric; finally, placing the primary non-woven fabric at the temperature of 100-110 DEG C for 2-3h to obtain the bamboo charcoal non-woven fabric. The bamboo charcoal non-woven fabric prepared by the method not only has a porous structure, but also has excellent adsorption performance.