3834results about How to "Large adsorption capacity" patented technology

The process for preparing tubular titanium oxide particles comprises subjecting a water dispersion sol, which is obtained by dispersing (i) titanium oxide particles and / or (ii) titanium oxide type composite oxide particles comprising titanium oxide and an oxide other than titanium oxide in water, said particles having an average particle diameter of 2 to 100 nm, to hydrothermal treatment in the presence of an alkali metal hydroxide. After the hydrothermal treatment, reduction treatment (including nitriding treatment) may be carried out. The tubular titanium oxide particles obtained in this process are useful as catalysts, catalyst carriers, adsorbents, photocatalysts, decorative materials, optical materials and photoelectric conversion materials. Especially when the particles are used for semiconductor films for photovoltaic cells or photocatalysts, prominently excellent effects are exhibited.

The invention relates to a method and a device for separating magnesium and lithium and enriching the lithium from salt lake brine. The method comprises the following steps of: separating an electrodialyzing device into two areas by using an anion exchange membrane, namely a lithium salt chamber and a brine chamber, filling the salt lake brine in the brine chamber, and filling a supporting electrolyte solution which does not contain Mg<2+> in the lithium salt chamber; placing a conducting matrix coated by an ionic sieve in the brine chamber as a cathode; placing the conducting matrix coated by a lithium-embedded ionic sieve in the lithium salt chamber as an anode; under the driving of an external electric potential, embedding Li <1+> in the brine in the brine chamber into the ionic sieve to form the lithium-embedded ionic sieve, and recovering the lithium-embedded ionic sieve into the ionic sieve after the lithium-embedded ionic sieve in the lithium salt chamber releases the Li <1+> into a conducting solution; and discharging a liquid in the brine chamber after the lithium is embedded, adding the salt lake brine again, alternatively placing electrodes in the two chambers, and repeating and circulating operations. Through the method and the device for separating magnesium and lithium and enriching lithium in the salt lake brine, the separation of the lithium and other ions is effectively realized, and a lithium-enriched solution is synchronously obtained. The method has a short flow and low production cost, is simple to operate, can be operated continuously, and is easy to industrially apply.

The invention discloses a method for preparing lithium adsorbent resin. The method includes steps of 1, preparing a precursor of the lithium adsorbent resin; 2, uniformly mixing the prepared precursor with adhesives and porogen to prepare disperse phase; 3, preparing continuous phase incompatible with the disperse phase; 4, adding the disperse phase into the continuous phase, stirring, leading the disperse phase to be scattered into beads with suitable granularity, and solidifying the beads into spherical particles under certain conditions; and (5) removing substances such as a dispersing agent, the porogen and the like in the spherical particles, and obtaining the lithium adsorbent resin capable of being used for extracting lithium from high-magnesium and low-lithium brine after activating treatment. The preparation method is simple, and the prepared lithium adsorbent resin has the advantages of zero pollution, high efficiency and adsorbent capacity, long service period, recyclability and the like.

The invention discloses a method for preparing a manganese series lithium ion sieve adsorbent, and relates to a method for preparing an inorganic adsorbent for adsorbing lithium from liquid lithium resources such as brine of salt lake, seawater and the like. In the method, a cubic crystal ion sieve precursor Li1.6Mn1.6O4 is prepared from Mn2O3 and LiOH or Li2CO3 serving as raw materials by using two sections of solid-phase reactions, wherein the precursor also can be used as an anode material of a lithium ion battery. The precursor is acidized to obtain a lithium ion sieve adsorbent MnO2.0.5H2O (or expressed as H1.6Mn1.6O4), and the ion sieve is the lithium adsorbent which has high selectivity on lithium. The method has the advantages of simple and readily available raw materials, simple process, high adsorption capacity of the ion sieve, low cost, high purity of products and is easy to realize industrial production.

The invention discloses a granular filtering material for adsorbing and removing heavy metals in water and a preparation method thereof. The granular material consists of the following components in part by mass: 80-120 parts of an adsorbent, 7-14 pats of an additive and 0.5-3 parts of a binding agent, wherein the adsorbent consists of the following components in part by mass: 50-70 parts of coal ash and 30-50 parts of zeolite powder or sea-foam stone powder; the additive consists of the following components in part by mass: 5-7 parts of Mg-Al hydrotalcite, 2-6 parts of biochar and 0.5-1 part of magnesium Lignosulfonate; the binding agent is bentonite. The granular filtering material is prepared through the steps of adsorbent acid modification, biochar preparation, granulation and heat treatment process. According to the invention, the prepared granular filtering material is 3-6 mm in granule size, is large in adsorption capacity and excellent in adsorption effect and can effectively remove heavy metals in water, and no secondary pollutants are dissolved out, so that the granular filtering material can be applied to the treatment on heavy metal micro-polluted water and industrial waste water containing heavy metals, and has good economic and social benefits.

The invention discloses a low-temperature selective catalytic reduction denitration catalyst and a preparation method thereof, wherein the catalyst takes an attapulgite as a carrier to load nano-composite materials of manganese oxide nano-particles; the structure thereof is as follows: manganese oxide particles with the particle diameter of less than 20nm are loaded on the rod-shaped crystal surface of the attapulgite with the diameter of 40-50nm; one or more types from iron, copper and nickel are added as an additive; and calculated according to the mass percentage of manganese, the content of the manganese oxide in the catalyst is 0.1-20. The preparation method comprises the steps of: firstly extruding, drying and crushing the attapulgite clay, and then preparing attapulgite clay powderinto suspension liquid; adding acid solution to wash and remove carbonate impurities, adding manganese salt, and then adding alkali solution for stirring so as to lead the manganese ion to be hydrolyzed and precipitated and loaded onto the crystal surface of the attapulgite, and finally obtaining the product after centrifugal washing, dewatering, drying and calcinations. The catalyst takes ammoniaas a reducing agent, and has higher activity of catalyzing NH3 and reducing NO reaction within the scope of 120 DEG C to 350 DEG C.

The invention discloses a novel lepidolite flotation method including primary rough selection, secondary fine selection and secondary scavenging. During the flotation, sodium silicate is added as an inhibitor with the amount ranging from 1400g / t to 1900g / t; an anionic collector is sodium oleate or oxyparaffin soap 731 with the amount ranging from 480g / t to 700g / t; and a cationic collector is dodecylamine or coconut oil amine with the amount ranging from 130g / t to 160g / t. The adding sequence of collectors is the anionic collector first and the cationic collector second, or the anionic collector and the cationic collector are added together. By the method, the lepidolite is selected through the combination of the anionic and the cationic, good flotation effect can be realized, flotation efficiency is high, and meanwhile, the synergistic effect is generated between the anionic collector and the cationic collector, and results from joint action of three mechanisms of coadsorption, charge compensation and function complementation.

The invention discloses a granular alcohol-based bactericidal preservative liquid dehydrating agent. The key point of the technical scheme of the invention is that the granular alcohol-based bactericidal preservative liquid dehydrating agent is composed of red bentonite, dolomite attapulgite clay, bauxite, sulfuric acid, high-viscosity attapulgite clay powder and 3A molecular sieve raw powder. The red bentonite, the dolomite attapulgite clay and the bauxite are mixed for an acidizing treatment, then mixed and stirred with the high-viscosity attapulgite clay powder and the 3A molecular sieve raw powder to be tabletted, roasted and crushed together, and then packaged to form the granular alcohol-based bactericidal preservative liquid dehydrating agent. When the granular alcohol-based bactericidal preservative liquid dehydrating agent is placed in an alcohol-based bactericidal preservative liquid dehydrating device for dehydration, the granular alcohol-based bactericidal preservative liquid dehydrating agent only adsorbs moisture rather than effective bactericidal preservative components in the alcohol-based bactericidal preservative liquid, so that the practical effect of the alcohol-based bactericidal preservative liquid is improved greatly; and the dehydrating agent is suitable for dehydration of alcohol-based bactericidal preservative liquids and other alcohol products.

The invention discloses carboxymethyl cellulose of wheat straw. The wheat straw is crushed and subjected to pretreatment with dilute alkali, bleaching and alkalization, and then reacts with chloroacetic acid before being etherified so as to obtain the carboxymethyl cellulose of the wheat straw; and the carboxymethyl cellulose of the wheat straw is subjected to graft copolymerization together with acrylic acid to obtain a carboxymethyl cellulose-based polymer adsorbent. The adsorbent is applied to the treatment of wastewater containing heavy metal ions, has high adsorbability and large adsorption capacity and ensures high metal ion removal rate. After treatment, the adsorbent has high stability and can completely meet the requirements of heavy-metal wastewater treatment; and the treated wastewater is clear and transparent without odor and can meet the national emission standard. The invention has the advantage that the resources of raw materials are wide, the cost is low, the use of waste is realized, and secondary pollution caused by burning of the wheat straw is avoided, thus being conducive to environmental protection.

The invention discloses a nano-compound adsorbent for efficiently removing trace phosphorus, arsenic and antimony from a water body, belonging to the technical field of environment functional materials. The organic framework of the nano-compound adsorbent of the invention is hypercrosslinked styrene-divinylbenzene ion exchange resin, a functional group for surface binding of the organic framework is a quaternary ammonium group or pyridyl, nano-inorganic functional particles are loaded, and the total volume of 1-20nm nano-pores accounts for greater than or equal to 90% of the total volume of all the pores of the organic framework. The nano-inorganic functional particles are nano-hydrated ferric oxide or nano-hydrated manganese oxide. The nano-compound adsorbent of the invention has more obvious nano effect, strong reaction activity, great adsorption capacity and high selectivity, well solves the defects of obvious swelling, weak adsorption reaction activity, small adsorption capacity, lower adsorption selectivity and the like of the existing nano-compound adsorbent, and is more suitable for advanced treatment of micro-pollution of water and waste water.

The invention relates to a method for preparing activated carbon. In the method, rice husks are taken as a raw material, NaOH is taken as an activator, and an activated carbon product is prepared through high temperature carbonization and activation, has high specific surface area, low ash content, a large number of distributed micropores, and high adsorption property, and is an ideal adsorption material, an ideal electrode material, an ideal hydrogen storage material and an ideal catalyst carrier. Alkaline solution is not required to be used for impregnation and activation, and the obtained product has a small particle size, has the characteristics of wide raw material source, low cost and simple process, is suitable for popularization, and has certain economic significance and environment-friendly significance.

The invention discloses porous phosphorus removing ceramic granules with a function of slowly releasing an alkali and a preparation method thereof. The prepared ceramic granules are an environmental material for efficiently removing phosphorus from municipal sewage and industrial wastewater. Based on the basic chemical properties of the phosphorus in water and a phosphorus removing mechanism by chemical absorption, the preparation method of the ceramic granules comprises the following steps of: mixing 20 to 40 mass percent of ordinary portland cement (42.5 level), 10 to 20 mass percent of bentonite, 10 to 20 mass percent of fly ash, 10 to 15 mass percent of calcium oxide, 15 to 25 mass percent of nitrocellulose, 14 to 30 mass percent of xonotlite fiber particle and 0.1 to 0.5 mass percent of pore-creating agent; adding water for stirring the mixture according to a water-solid ratio of 0.35 to 0.45; granulating the mixture into granules with required grain sizes; and after the granules are foamed and solidified, curing the granules by using high-temperature steam to obtain the ceramic granules. The method has the advantages of simple preparation process, readily available raw materials, low cost and wide application prospect in the field of the removing of the phosphorus in water bodies. The prepared ceramic granules have the characteristics of capacity of slowly releasing the alkalis, silicic and calcareous textures, porosity, capacity of continuously and efficiently absorbing and removing the phosphorus and suitability for phosphorus removing systems of the municipal sewage and the industrial wastewater.

The invention relates to the modification technology of natural zeolite material and aims to provide a nitrogen oxide adsorbent prepared through ion exchange modification of the natural zeolite. The adsorbent is prepared through the following step: adding the natural zeolite after dealumnization processing and ammonium exchange processing into metal salt aqueous solution to be subjected to metal ion exchange; and washing, drying and then roasting at the high temperature of 300-600 DEG C for 1-5 hours to obtain the nitrogen oxide adsorbent of modified natural zeolite containing corresponding metal elements, wherein the metal salt is any one of hydrochloride, nitrate, sulfate or oxalate of Na, Ca, K, Ba, Ti, Mn, Ni or Cu. The nitrogen oxide adsorbent prepared through modification of the natural zeolite can be used as an environment function material for adsorbing and purifying the industrial tail gas, flue gas and automobile exhaust containing nitrogen oxide. The nitrogen oxide adsorbent is low in production cost and large in adsorption quantity, and has a broad market prospect as the environment function material.

The invention relates to a method for preparing titanium dioxide films for a dye-sensitized solar battery, comprising the following steps: (a) titanium dioxide sol with 1-10 wt percent of titanium dioxide, 5-10nm of grain size and 10-100mg / mL of concentration and titanium dioxide powder with 5-15 wt percent of titanium dioxide and 20-40nm of grain size are uniformly ground, 80-90 wt percent of pore-forming agent is added, and the obtained 100wt percent of mixture are grounded for 0.5-2 hours; (b) titanium dioxide slurry is coated on conductive glass and is dried for 5-15 minutes at 100-130 DEG C; and (c) the conductive glass coated with the titanium dioxide slurry is sintered for 0.5-2 hours at 450-500 DEG C; by adopting the method in the invention, the process is simple, the operation is easy, the preparation period is short, thereby being beneficial to industrialization; in addition, the photoelectricity conversion efficiency of the dye-sensitized solar battery assembled by the titanium dioxide films is high by adopting the method.

On substrate of electrode made from organic insulating material, conducting material is printed through spraying method so as to form working electrode and basal body, and a layer of polycarbonate insulator is coated on surfaces of intermediate part between them. Lower part of basal body of working electrode is coated a conversion zone formed through integrated application including techniques of high polymer built up film or ferrocene covering, embedding enzyme, nano technique, and diffusing astriction so as to fabricate biologic enzyme electrode. The invention raises each performance of biologic sensor and practicability integrally.

The present invention concerns a preparation method of an activated carbon fiber. A preparation method of a fiber column of a plant activated carbon is characterized in that the method contains the following steps: (1) After the fruit of a plane tower gourd is dried naturally or artificially, a coat and seeds are removed and a plant fiber column can be obtained. (2) The plant fiber column is dipped into a chemical solvent which is a phosphoric acid, a zinc chloride liquor, a sodium hydroxide, or a potassium hydroxide liquor. (3) The dipped plant fiber column is dried at a temperature between 100 DEG C and 108 DEG C. (14) The dried plant fiber column is put into a carbonization and activation crucible, of which a cover is sealed by a sealing silica gel. (5) The crucible containing the plant fiber column is put into a muffle and carbonized and activated 0.1-1.0h at the temperature between 200 DEG C and 800 DEG C. (6) After the carbonization and activation are finished, the sealed crucible is taken out and cooled in a drying bison and then the product is obtained. The technology of the method is simple. The obtained fiber column of the plant activated carbon has the characteristics of good adsorption performance, large adsorption capability and lost cost.

The invention discloses a sodium alginate-MOF (metal organic framework) composite spherule as well as a preparation method and an application thereof, belongs to the field of material synthesis and overcomes the defect that a conventional MOF material has small grain size and poor acid resistance and is difficult to be separated from water. The co-precipitation technology is adopted, a sodium alginate-MOF mixed liquid is dropwise added to a precipitant solution containing calcium chloride, water and ethyl alcohol, a non-crosslinked composite spherule is obtained, then the composite spherule is added to a glutaraldehyde solution for cross-linking of a sodium alginate framework, the sodium alginate-MOF composite spherule is obtained, the grain size of the spherule is about 1 mm, and the composite spherule has the characteristics of high acid resistance, high separability from water, high water pollutant adsorption capacity, high mechanical strength, long service life, environment-friendliness and the like.

The invention relates to a supported ion liquid active carbon as well as a preparation method and application thereof; the supported ion liquid active carbon provided by the invention is prepared from coconut shell carbon serving as a raw material by an immersion method; and the immersion liquid is a mixed solution mainly consisting of an ion liquid and ethanol at the volume ratio of (1:2)-(1:10). In the invention, the preparation method is simple; the prepared active carbon has higher absorptive capacity and higher absorption efficiency than those of the original active carbon; the consumption and working cost for the absorptive carbon can be effectively reduced; and the problem that carbon variety and amount are scarce in our country is relieved to a certain degree.

The invention discloses a human immunodeficiency virus (HIV) affinity adsorption column, comprising a column body and at least one activated affinity microsphere located in the column body, wherein the activated affinity microsphere is connected with a human immunodeficiency virus affinity protein, and the affinity protein can be bound with human immunodeficiency virus. The affinity protein comprises a main receptor CD4 molecule, a gp120 antibody, an auxiliary receptor CXC chemokine receptor 4 (CXCR-4) and a CC chemokine receptor 5 (CCR-5). The affinity microsphere may be a glass microsphere with the size of 1mm, a chitosan crosslinking microsphere with the diameter more than 500 microns, or a gluosan microsphere. The human immunodeficiency virus affinity adsorption column disclosed by the invention is applicable for eliminating the human immunodeficiency virus in the blood of HIV patients, and relieving and treating the immunodeficiency syndrome of HIV patients; and compared with the traditional treatment methods, the immunoadsorption column has high safety, good specificity, small toxic or side effects and good operation simplicity.

The invention discloses a supported polypropylene imine material and a preparation method and application thereof. The material is formed by supporting polypropylene imine in a porous carrier material, wherein the mass ratio of the polypropylene imine to the porous carrier material is 0.1-2:1. The polypropylene imine one or random mixture of first generation, second generation or third generationpolypropylene imines taking ethylene dimine, butyl diamine, hexanediamine or diethylenetriamine as a core. The polypropylene imine is supported on the porous carrier material such as porous silica gel, active alumina, silicon-based ordered mesoporous material SBA-15, MCM-41 or active carbon or the like by a physical dipping-solvent evaporation method or a chemical method; and the material can be used as an adsorbent for catching and separating acid gas such as CO2, SO2 or H2S or the like from a gas mixture. The adsorbent has the advantages of quick and efficient adsorption, high adsorption capacity, high selectivity, recycle and the like.

The present invention features that the waste organic gas recovering and treating apparatus includes also one rectifying and recovering system, which comprises rectifying tower between the outlet of analyzed gas and the condensator and solvent accepting trough between the rectifying tower and the condensator and is for recovering the organic solvent; and may includes also one analyzed gas by-pass cooling system and one gas distributing baffle. The method of recovering and treating waste organic gas may be alternate single stage adsorption-analysis-cooling and dehumidifying in two or three serially connected adsorbors, and through connection and arrangement of pipeline and valves, uninterrupted recovering and treating of waste organic gas is realized.

The invention provides a method for preparing a magnetic active carbon composite material for water treatment in the technical field of environmental purification. The method comprises the following steps: mixing active carbon and corresponding metal salt solution, and generating magnetic nano granules in pore canals of the active carbon in situ by using the characteristics of instantaneous high temperature, high pressure, high cooling speed and the like generated by ultrasonic waves; and filtering and drying the obtained compound, and treating the compound at high temperature to form the magnetic active carbon composite material, wherein the magnetic material accounts for 15 to 50 percent in the whole material in terms of weight percentage, and the active carbon material accounts for 85 to 50 percent. The invention provides a new method for generating magnetic nano particles in the pore canals of the active carbon; and the prepared magnetic active carbon keeps larger specific surface area, reserves the open pore canals from the active carbon, removes organic substances and inorganic heavy metal ions in water treatment, and is easy for magnetic separation and convenient to recover.

The invention discloses an adsorbing material for removing phosphorous and nitrogen, a preparation method thereof and a method for purifying sewage by using the adsorbing material. The preparation method for the adsorbing material comprises a step of mixing a clay mineral material, an organic modifier and a proper amount of deionized water to performing organic modification treatment on the clay mineral material. The adsorbing material prepared by the method can efficiently remove the phosphorous and the nitrogen, has high adsorption capacity, high removal efficiency and strong water quality change impact capacity resistance, and can be used for treating the sewage which cannot be treated by a biochemical method, the treatment does not produce sludge, and the treatment cost is low.

The invention provides a broad spectrum heavy metal activity deactivator preparation method. The present invention relates to a soil conditioning agent preparation method, which comprises the following steps: (A) taking humic acid-rich peat, digest compost or a forest soil humus layer, and carrying out screening to provide a spare use; (B) adding the humic acid-rich material to HCl or HNO3 to soak, and stirring 2-3 times; (C) filtering the soaked material with a bamboo drying pad, washing 2-3 times with clear water, and carrying out air drying to a moisture content of less than 5%; (D) sequentially adding ZnSO4.7H2O, sodium silicate and sodium selenite to the material obtained from the step (C), carrying out aging on the mixed material for 2-3 days and uniformly mixing; and (E) adding limestone powder to the material obtained from the step (D), and completely and uniformly mixing to prepare the broad spectrum heavy metal deactivator. With the combination inhibitor prepared by the preparation method, activities of soil heavy metals can be significantly inactivated, the heavy metals can be inhibited from entering the food chain, and risks on human health by the heavy metals can be reduced.

The invention relates to a method of preparing three-dimensionally ordered macroporous chelate resin which has a hydrophilic-structure framework and can absorb precious metal irons in aqueous solution, belonging to the field of the chelate resin. The method of preparing the three-dimensionally ordered macroporous chelate resin comprises the following steps: (1) preparing 80-1000nm silica colloidal crystal template; (2) preparing three-dimensionally ordered Poly(N-vinylformamide) or poly(n-vinylacetamide) macroporous material; and (3) preparing hydrophilic three-dimensionally ordered macroporous chelate resin. Compared with the traditional macroporous or gel-type polyvinylamine resin, the novel three-dimensionally ordered macroporous chelate resin prepared with the method has the advantages that the regularly-arranged porous channel system has small diffusion resistance, which is good for the metal irons enter the absorption center from all directions. In addition, the novel three-dimensionally ordered macroporous chelate resin is easy to synthesize, has stable performance, good hydrophilic performance and high selectivity, contains many functional groups, can absorb a large number of metal irons and has better development and utilization values in the aspect of avoiding heavy metal pollution and protecting the environmental water.

A bioadsorbent for treating the sewage containing heavy metal ions (5-2000 ppm) and with 2-11 of pH value is prepared by coating method and blotting method to coat the surface of mycelia (citrobacteria, yeast, etc) with the glucosan, chitosan, or chitosan derivative. Its advantages are low cost, high adsorption capacity (30-100 mg / g) and cyclic use (20 times).

The invention discloses a preparation method of an efficient polyethyleneimine modified cellulose-based heavy metal adsorbent shown by a formula (I), belonging to the technical field of high-molecular function modification and synthesis of a natural material. By adopting cellulose as a framework, benzoyl peroxide (BPO) as an initiator, a mixture of water and acetone as a solvent and glycidyl methacrylate (GMA) shown by a formula (III) as a monomer, the method comprises the following steps of: performing a free radical-initiated graft copolymerization reaction on the surface of microcrystalline cellulose shown by a formula (II); performing amination on a graft product shown by a formula (IV) by use of graft polyethyleneimine (PEI) shown by a formula (V); and washing and drying the product to obtain a powdery solid product, wherein the reaction is easy to operate, and the conditions are mild. The heavy metal adsorbent prepared by the preparation method has the advantages of excellent adsorption property, large adsorption capacity and fast adsorption, can be regenerated and recycled, and has broad application prospects in the water treatment fields such as control of heavy metal industrial pollutants and the like.

The invention discloses a preparation method of a magnetic chitosan composite adsorption material. The preparation method of the magnetic chitosan composite adsorption material comprises the steps that ferriferrous oxide magnetic nanoparticles are prepared through a chemical coprecipitation method, silicon dioxide wraps the surface of ferriferrous oxide through a hydrolysis reaction of tetraethyl orthosilicate, glutaraldehyde serves as a cross-linking agent to enable chitosan and ferriferrous oxide wrapped by silicon dioxide to generate a cross-linking reaction to obtain magnetic chitosan, and finally the magnetic chitosan composite adsorption material is obtained by modifying the magnetic chitosan through quaternary ammonium salt. The composite material has the excellent dispersibility, thermostability and weak magnetism, the composite material has the advantages of being high in adsorption capacity, good in adsorption effect, high in adsorption speed, easy to separate and the like to anionic dye in wastewater, and the composite material has a good application prospect in wastewater treatment of the anionic dye.

The invention discloses a chromatographic medium using amino benzimidazole as a function ligand and a preparation method thereof. Hydrophilic porous microspheres are used as a chromatographic medium, activated by allyl bromide, and coupled with the amino benzimidazole to obtain a medium using the amino benzimidazole as the function ligand; dimethyl sulfoxide and the allyl bromide are sequentially added into a chromatographic matrix for activation; the activated chromatographic matrix is reacted with N-bromo-succinimide for bromo-alcoholization; the bromo-alcoholized chromatographic matrix is mixed with an amino benzimidazole solution for coupling the amino benzimidazole ligand; finally an aqueous ethanol amine solution is used for sealing unreacted bromo-alcoholized ends to obtain a hydrophobic charge induced chromatographic medium using the amino benzimidazole as the function group. The new chromatographic medium is simple in preparation process and high in antibody adsorption capacity, and has the characteristics of non salt dependent adsorption, can realize desorption and recovery by changing the solution pH to weak acid, and can be used for hydrophobic charge induction chromatographic separation of antibodies.