36 results about "Sorbent" patented technology

The flow of a stimulation fluid may be diverted from a high permeability zone to a low permeability portion of a subterranean formation by use of an acid soluble or acid degradable solid particulate and a composite of an acid or an acid generating compound adsorbed onto a water-insoluble adsorbent. Conductive flow of hydrocarbons from an occluded fracture may be resumed by release of the acid from the adsorbent or the acid generating compound.

The invention provides a sludge-based adsorbent used for desulfurization and demercuration of flue-gas and a preparation method thereof. The sludge-based adsorbent employs municipal sludge and/or papermaking sludge as a raw material. The preparation method comprises the following steps: adding an activator and a physical conditioning agent into sludge slurry and carrying out mixing under stirring and mechanical dehydration; carrying out grinding and screening after drying; and carrying out physical activation after pyrolysis in an inert atmosphere so as to prepare the sludge-based adsorbent. According to the invention, the sludge slurry is used as a raw material, and uniformity of the activator and the physical conditioning agent is improved by using a wet method and the means of mixing; the activator and the physical conditioning agent can reduce repulsive interaction and hydrophilic interaction among electronegative sludge particles, and a porous lattice structure with a hard texture and good permeability is formed in a sludge cake obtained after pressure filtration and dehydration; the prepared adsorbent can be used for desulfurization and demercuration of flue-gas; and the preparation method has the advantages of simple procedures, easily controllable conditions, capacity of realizing harmony and unity of sludge treatment and resource utilization and good economic benefits, environmental benefits and social benefits.

The invention belongs to the technical field of adsorbing agents and relates to a method for preparing a carbon adsorbing material used for efficiently removing harmful ions from waste water. The method comprises the following step: on the basis of taking the soluble saccharide or furfural as a carbon source and the amino acid or compound containing sulfydryl, carboxyl or amino group as an additive, performing the hydro-thermal reaction on the carbon source and the additive at 160-220 DEG C, thereby generating the carbon solid adsorbing material. The adsorbing material can be used for processing heavy metal ions or transition metal ions in industrial effluent and domestic sewage and the processing effect is excellent. The method has the advantages that the soluble saccharide or furfural is used as a raw material for preparing the carbon solid adsorbing material, the cost of the raw material is low, the preparation process is simple, the solid adsorbing material is synthesized through one step of hydro-thermal reaction, the reaction condition is mild and controllable, and the solid adsorbing material prepared by using the method has excellent stability and contains a large amount of surface groups. The content of the surface groups can be controlled within a large scope without changing the reaction condition. The surface groups have strong interaction with the metal ions, such as sulfydryl and mercury ions, so that the carbon adsorbing material can be used for efficiently removing the harmful ions.

The invention discloses application of a two-dimensional transitional metal carbide nanosheet as a radionuclide adsorbent. Due to the fact that two-dimensional transitional metal carbide nanosheet MXene material has an absorption effect on radionuclide, the two-dimensional transitional metal carbide nanosheet can be utilized as the adsorbent for absorbing radionuclide.Compared with other inorganic nanometer adsorption material, MXene material, featuring a nano layered structure, can effectively increase adsorption capacity of radionuclide. In the meantime, storage space of the adsorbent is greatly reduced due to large density of MXene material.Accordingly, MXene material has potential application value in the field of irradiated fuel reprocessing, control over radioactive pollutants discharged by a nuclear power station, a hospital, a factory and others.

The invention discloses a method for preparing an absorbing material by using lakebed sludge. According to the method, the absorbing material can be prepared by the following steps of adding bagasse and red soil into solid waste of the lakebed sludge and coal ash which serve as raw materials, and then drying, screening, carbonizing, calcining and drying. The method is simple, easy to operate and wide in application rang. Laboratory tests prove that the absorbing material can remove heavy metal in a water body effectively and can adsorb common dyes well.

A method for regeneration of toxic adsorbent is disclosed. The adsorbent comprises 80% to 95% by weight of molecular sieve and the other is adhesive agent. Regeneration process includes: solving and cleaning the adsorbent bed by using mixed aromatic solvent with 5% to 30% by volume of polar compound at 20 to 180 degree s C. under 0.2-1.5MPa and drying. Aromatic hydrocarbon in said mixed aromatic solvent is selected from toluene, xylene, ethylbenzene, diethyl benzene or methyl ethylbenzene and polar compound is selected from water, methanol, ethanol or acetone.

The invention discloses porous modified bentonite with foaming effect. The porous modified bentonite is characterized by being prepared from the following raw materials by weight: 85 to 90 parts of calcium bentonite, 1 to 2 parts of octadecyl trimethyl ammonium chloride, 1 to 2 parts of ammonium bicarbonate, 3 to 5 parts of activated carbon powder, 2 to 3 parts of sodium silicate, 0.8 to 1.3 parts of aminopropyltriethoxysilane, 2 to 2.5 parts of carboxymethyl cellulose, 5 to 7 parts of phenolic resin powder, 2 to 3 parts of crushed phoenix tree leaves and 3 to 4 parts of modified diatomite. According to the invention, a formula is reasonable; since bentonite is modified by adding foaming matters like ammonium bicarbonate and activated carbon powder and surfactants like octadecyl trimethyl ammonium chloride, the modified bentonite has porosity, so good adsorption effect is obtained; moreover, through good dispersion of the modified bentonite and the crushed phoenix tree leaves, the porous modified bentonite in the invention is porous and uniform in dispersion and is applicable as a water purification adsorbent, etc.

Aspects of the present disclosure include a solid phase sorbent for preparation of analytical samples. The solid phase sorbent includes particles that are surface modified with an α-cyclodextrin moiety. Also provided is a method of reducing matrix effects in an analytical sample. In some embodiments, the method includes contacting a sample comprising a matrix-interfering agent and an analyte with α-cyclodextrin modified particles to produce a contacted sample wherein the matrix-interfering agent binds to the α-cyclodextrin modified particles; separating the α-cyclodextrin modified particles from the contacted sample to produce a matrix-reduced composition; and detecting the analyte in the matrix-reduced composition. Systems for practicing the subject methods are provided that include the subject solid phase sorbent.

An apparatus for the photocatalyitc oxidation of common industrial effluent contaminants in aqueous solution includes a reactor and a thin film photocatalyst fixed to a support material like Cuddapah stone. The support material is preferably an inert material. The TiO2 preformed does not contain any adsorbent for making the thin film photocatalyst, The catalytic runs were carried out over TiO2 thin film fixed bed reactor. The study is extended to the immobilization of preformed TiO2 with a binder for making thin film using a simple spray technique on inert Cuddapah stone. This method of immobilization require no thermal treatment of the catalyst at high temperatures. The method is applicable for the photocatalytic treatment of industrial effluents at a higher scale. Also it is a method for preparing a photocatalyst adopted for the oxidation of industrial common effluent by simple spray technique. Also it is a method and apparatus for destroying industrial common effluent contaminants in aqueous solution

The invention specifically relates to a method for estimating in-vitro detoxification effect of a mycotoxin detoxification agent by using liquid chromatography, belonging to the technical field of biological detection. The method comprises the following steps: (1) early stage preparation: I, drafting of a standard curve of mycotoxin; II, preparation of a sample of the detoxification agent; and III, acquisition of a reaction medium; (2) detoxification: I, evaluation of in-vitro adsorption detoxification; and II, evaluation of simulated in-vivo adsorption detoxification; and (3) liquid chromatographic detection. The method for estimating in-vitro detoxification effect of the mycotoxin detoxification agent by using liquid chromatography can simulate gastrointestinal environments, adopts supernatant of chyme in the alimentary canal of an animal as a reaction medium, completely reproduce the gastrointestinal environment in the animal and more authentically evaluate the adsorption effect of an adsorbent.

The invention discloses a method for refining a high-temperature wood hydrolyzate. The method comprises the following steps: performing centrifugation on a raw material hydrolyzate; removing the water-soluble macromolecular lignin by a flocculation method; obtaining the hydrolyzate after flocculation, adsorbing the water-soluble small molecule lignin with the resin, and obtaining a purified xylosesolution; removing residual lignin of the purified xylose solution by a filtering device to obtain refined xylose liquid and prepare xylose; and eluting the resin-adsorbed lignin with an eluting solvent, and recovering the eluting solvent and lignin. The recovered ethanol of the invention can be recycled and reused; an integrated vortex reactor is also used to effectively improve and increase theflocculation effect, and the ion exchange resin as an adsorbent has a good adsorption effect on the charged lignin. The hydrolyzate improves the membrane separation effect of a filter membrane and maintains a large flux of the membrane.

The cross-linked polyaminocarboxylates for the removal of metal ions from aqueous solutions of the present invention are cross-linked anionic polyelectrolytes CAPE 6 and CAPE 9, containing pH-responsive amino acid residues. The cross-linked anionic polyelectrolytes have been synthesized via cycloco-polymerization and ter-polymerization of a diallylammonioethanoate monomer (90 mol %) and a cross-linker, 1,1,4,4-tetraallylpiperazinium dichloride (10 mol %) in the absence of SO2 (CAPE 6) and in the presence of SO₂ (CAPE 9), respectively. For the sorbents CAPE 6 and CAPE 9, the efficiency of Cu²⁺ removal at an initial metal concentration of 200 ppb was found to be 77.5% and 99.4%, respectively. Treatment of real wastewater samples spiked with Cu²⁺ ions showed the excellent ability of the cross-linked anionic polyelectrolytes to adsorb metal ions.

The invention provides a method for recovering gold from a printed circuit board of a waste mobile phone. The method comprises the following steps that the gold in a gold leaching liquid of the printed circuit board of the waste mobile phone is adsorbed by adopting an adsorbent so as to obtain gold-loaded carbon, wherein the adsorbent is selected from biochar or iodine-loaded biochar; and the gold-loaded carbon is subjected to desorption, and then a desorption solution is electrolyzed so as to obtain the gold. According to the method, after gold leaching is carried out on the printed circuit board of the waste mobile phone, the iodine-loaded biochar is adopted for adsorption, liquid gold is concentrated, then the gold can be recovered through electrolysis, meanwhile, the gold leaching liquid (iodine) can be recovered, so that the production cost can be lowered, and the resource utilization efficiency can be improved; modification is carried out on the biochar by using an ethanol solution of iodine so as to prepare the iodine-loaded carbon, so that the gold adsorption efficiency can be improved, and meanwhile, the utilization rate of the iodine can be increased; and the biochar prepared from agricultural waste is used for adsorbing the gold, so that the waste can be recycled, the production cost can be lowered, and the energy consumption can be reduced.

A chemical looping combustion (CLC) process for sour gas combustion includes a number of reaction zones and is configured to provide in-situ oxygen production and in-situ removal of S02 from a product gas stream by reacting the SO2 with a calcium-based sorbent at a location within one reaction zone. The CLC process is also configured such that the in-situ oxygen production results from the use of a metal oxide oxygen carrier which is purposely located such that it does not directly contact the sour gas, thereby eliminating the generation of undesirable sulfur-based metal oxides.

The invention provides a preparation method of zeolite-activated carbon composite adsorbent, comprising the following steps: (1) mixing coal gangue powder, asphalt, and white carbon black, drying, and then, in a tube furnace, under the protection of inert gas, Carbonization, and then carbon dioxide gas is introduced to activate to obtain the activated sample; (2) Add the activated sample to the sodium hydroxide solution, react, stand at room temperature for hydrothermal crystallization, then ultrasonically disperse, filter, and filter the residue Washing and drying to obtain the zeolite-activated carbon composite material; (3) Add the obtained zeolite-activated carbon composite material to the glucose solution, stir, filter, dry the obtained filter residue, and then put it into a tube furnace under the protection of an inert gas , carbonized to obtain the zeolite-activated carbon composite adsorbent. The zeolite-activated carbon composite adsorbent prepared by the invention has large BET specific surface area and micropore specific surface area, and has large adsorption capacity for CH4 and N2.

The invention discloses an adsorbent injection device based on adsorbent injection mercury removal. The device comprises an air suction pipe, an air pipe behind the air suction pipe is obliquely upward, an air suction assembly comprises two eccentric cylinders, blade sleeves are arranged in the two eccentric cylinders respectively, blades are arranged in the blade sleeves respectively in a sleevedmode, gears are arranged at the upper ends of the two eccentric cylinders respectively, neutralizing assemblies are arranged in the blades and the blade sleeves, recycling assemblies are arranged onthe side faces of the blades, cooling assemblies are arranged above the gears, and coal-fired waste gas can be sucked into the air suction pipe through the air suction assembly to be subjected to mercury removal, the cooling assemblies reduce the temperature of waste gas and liquefy most mercury vapor, the neutralizing assemblies neutralize the remaining mercury vapor and mercury oxide into substances difficult to volatilize, then the recycling assemblies recycle neutralized by-products and adsorption materials, and the by-products are prevented from being accumulated in the air suction pipe.The device provided by the invention has the characteristics of simultaneous desulfurization, mercury removal and mercury oxide removal and high adsorption efficiency.

The invention discloses chitosan-modified sodium bentonite, a preparation method and an application and belongs to the technical field of modified bentonite adsorbents and water treatment. Chitosan is supported on the surface of sodium bentonite under the bridging function of chloroactic acid with a chemical reaction synthesis method, that is, natural sodium bentonite is firstly organically modified with chloroacetic acid and then reacts with alkalified chitosan, and chitosan-modified sodium bentonite is obtained. Compared with conventional mechanical mixing, the roughness degree of the material is increased through chemical modification, the number of O and N atoms capable of generating chemical adsorption is increased, the adsorption surface area is increased, so that modified sodium bentonite has excellent adsorption performance and heat performance, has the highest chrome azurol S adsorption rate reaching 99.8% at the normal temperature and can serve as an adsorbent to be used for treatment of wastewater containing a color developing agent or dye.

The invention relates to a preparation method of fatty alcohol sebacate and belongs to the technical field of ester compound synthesis in organic chemistry. The preparation method includes the following steps: (1) with sebacic acid and an unitary C10-C13 fatty acid as raw materials, adding a composite catalyst composed of p-toluenesulfonic acid and phosphorous acid, increasing the temperature to 130-150 DEG C and performing an esterification reaction for 3-8 h; (2) increasing the temperature to 150-180 DEG C with vacuum degree being not more than 10 mbar, and performing dealcoholization for 0.5-2 h; and (3) adding an adsorbent to adsorb residual catalyst in a product, and filtering the product to prepare the fatty alcohol sebacate. The preparation method achieves the advantages of high ester content and slight color.

The invention discloses a resin-based nano composite adsorbent used for extracting cesium from brine and a preparation method of the adsorbent. The method comprises the following steps: synthesizing inorganic nano silicon material doped porous resin by adopting an in-situ polymerization method, and supporting potassium cobalt ferrocyanide on the inorganic nano silicon material doped porous resin by a vacuum impregnation method to prepare the resin-based nano composite adsorbent. The adsorbent provided by the invention utilizes a high specific surface area of the inorganic nano silicon materialto improve a loading amount of the porous resin to the potassium cobalt ferrocyanide, so that the adsorption capacity of the adsorbent is improved; and in addition, cross-linking twining of a polymerchain in resin nano pores is utilized to effectively inhibit loss of the active component nano potassium cobalt cyanide particles, so that the service life of the adsorbent is ensured; therefore, theresin-based nano composite adsorbent used for extracting the cesium from the brine has the following advantages: the adsorbent has a fast adsorption speed of the cesium, large adsorption capacity, high selectivity, stable performance and long service life.

The invention discloses a preparation method of a filtering material for adsorbing fluorine ions in water, and a preparation method, wherein Al-PAM, NaOH, diethylenetriamine, carbon disulfide, (NH4)2CO3, AlCl3 and a monomer acrylamide are used main raw materials, an adsorbent uses a metal hydroxide colloid as a base material, and a large number of polyacrylamide polymer branch chains are grafted on the surface of nanoparticles to obtain an organic-inorganic hybrid flocculating agent. According to the present invention, the raw materials are simple, the preparation process and the treatment process are simple, the chemical stability is high, the method is easy to implement in practical applications, and the product has excellent adsorption effect on fluorine ions in water.

The invention provides a gasoline gas recovery device which comprises an absorption tower, a coalescer, an adsorption device, a vacuum pump, a temperature monitoring device, an emission concentration detection device and a temperature adjusting device. The absorption tower is used for enabling an absorbent accessed through an absorbent inlet and gasoline gas accessed through a gasoline gas inlet to make countercurrent contact in the vertical direction so as to enable the absorbent to absorb gasoline in the gasoline gas. The coalescer is used for receiving gasoline gas treated by the absorbent of the absorption tower and further performing gas-liquid separation. The adsorption device is provided with an adsorbent used for carrying out gasoline adsorption on gas which moves from bottom to top and carries residual gasoline. The vacuum pump is used for performing vacuum regeneration on the adsorbent. The temperature adjusting device is in communication connection with the emission concentration detection device and the temperature monitoring device and is used for adjusting the temperature of the external absorbent. Three times of gasoline gas treatment are performed through the absorption tower, the coalescer and the adsorption device, so that the content of discharged gasoline-containing gas is reduced.

The invention provides a biogas carbon reduction coupling biogas slurry pollution reduction device and method based on biogas circulation type fermentation, and belongs to the technical field of environment and energy. The device comprises an electric fermentation unit, a solid-liquid separation unit, a hydrothermal carbonization unit and a product collection unit, wherein the electric fermentation unit comprises an electric fermentation tank, a cathode chamber, an anode chamber, a cation exchange membrane and a direct-current constant-voltage power supply; according to the device, biotransformation of hydrogen-philic methanogens and electrochemical cathode reduction are coupled, biogas is circulated to an anaerobic digestion chamber, in-situ biogas biological purification is carried out, ammonia nitrogen and COD in biogas slurry are removed in an anode chamber while CO2 is reduced at a cathode to generate methane, and electron transfer and conservation rules are reasonably utilized; the biogas slurry can be used for irrigation after pollution reduction, and residual pollutants in the biogas slurry can also be adsorbed by biogas residue biochar to be further purified; the biogas residues can be prepared into hydrothermal carbon to be reused for anaerobic digestion or used as an adsorbent, so that the aims of comprehensive utilization of biogas slurry, biogas residues and biogas and CO2 emission reduction are fulfilled.

The invention discloses a method and device for measuring performances of a gas adsorbent material with a gravimetric method. The device comprises an adsorption gas generation unit and an inlet/outlet pipeline connected with the adsorption gas generation unit, wherein a pipeline circuit is arranged on the inlet/outlet pipeline of the adsorption gas generation unit; the pipeline circuit is provided with a weight measurement unit; and the inlet/outlet pipeline of the weight measurement unit is further provided with a pipeline circuit. The method comprises the following steps: when the adsorption gas enters the adsorption gas generation unit, switching on a valve and measuring gas temperature and concentration of the inlet/outlet pipeline; a crank connecting rod mechanism in the weight measurement unit is used for expanding the inlet/outlet pipeline and a fixing piece of an inlet/outlet pipeline connection plate; a suspension type micro balance is used for continuously measuring the weight of an adsorption material filling part; and the measurement is circulated. The adsorption or desorption performance of the adsorbent material is directly measured by using the gravimetric method. The adsorption or desorption performance of the adsorption material can be accurately and directly measured by adopting weight measurement in a certain period of time.

The invention discloses an adsorption column, particularly relates to an adsorption column which takes activated carbon as an adsorbent and is used for amino acid adsorption and purification, and belongs to the technical field of chemical unit equipment. The amino acid activated carbon adsorption column comprises a column body, wherein an inlet is formed in the lower end portion of the column body, an outlet is formed in the upper end portion of the column body, an adsorption inlet control valve is arranged on an inlet pipeline, an adsorption outlet control valve is arranged on an outlet pipeline, and activated carbon packing layers with different particle sizes are filled into the column body in a layered mode. The amino acid activated carbon adsorption column is reasonable in design, the adsorption retention time can be effectively controlled due to the bottom-up adsorption method, and the defect that according to a traditional adsorption method, the adsorption efficiency is not high due to channeling produced when the distribution performance of raw material liquid on the adsorbent is not high is overcome, and the amino acid activated carbon adsorption column is particularly suitable for decoloration of amino acid original liquid and removal of organic impurities, has the advantage of being high in control degree and good in adsorption efficiency and has wide application space.

The invention relates to a production method of a novel sludge adsorbent. The production method of the novel sludge adsorbent comprises the steps of using residual sludge of an urban wastewater treatment plant as a raw material, inoculating active peat against a beneficial strain (paecilomyces bainier) extracted from fulvic acid, and conducting fermentation culture on the beneficial strain (paecilomyces bainier) extracted from the fulvic acid to produce an active peat microbial preparation; and producing the novel sludge compound adsorbent after mixing the dried sludge and the active peat microbial preparation according to a ratio. According to the compound adsorbent, the adsorption performance of a single sludge adsorbent is improved, and the capability of removing heavy metal cadmium ions is enhanced. According to the production method of the novel sludge adsorbent, the residual sludge of the urban domestic wastewater treatment plant and the produced active peat microbial preparationare mixed for producing the novel adsorbent, so that resource utilization of the sludge is achieved.