136results about How to "Improve adsorption efficiency" patented technology

The invention relates to a preparation method of a crosslinked chitosan-manganese dioxide composite adsorbing material. The method comprises the following steps that chitosan is dissolved in acetic acid to form chitosan gel liquid; the chitosan gel liquid is dropwise added to a mixed solution of an NaOH solution and alcohol to form a chitosan gel sphere; the chitosan gel sphere is placed in a glutaraldehyde solution; a crosslinked chitosan particle is produced by shaking; the crosslinked chitosan particle is soaked in a potassium permanganate solution which is boiled; excessive HC1 solution is dropwise added to form a manganese dioxide loaded crosslinked chitosan particle; the particle is filtered and washed with water to be neutral; and the absorbing material is obtained. The crosslinked chitosan-manganese dioxide composite adsorbent is high in adsorption capacity and adsorption efficiency, good in oxidative degradation ability and high in acid resistance, and facilitates solid-liquid separation.

The invention discloses a preparation method of a magnetic core-shell alginate microsphere adsorbent. The preparation method comprises the following steps: preparing two parts of sodium alginate solution, wherein one part is shell layer solution, and dichloromethane and nanometer ferroferric oxide are added into the other part and uniformly mixed to obtain nuclear layer solution; and respectively injecting the shell layer solution and the nuclear layer solution into the outer layer and the inner layer of a stainless steel coaxial needle head, jetting the shell layer solution and the nuclear layer solution into a receiving device filled with calcium chloride solution under high-pressure electrostatic jetting conditions by utilizing high-pressure electrostatic spinning equipment, stirring, filtering, then, immersing the microsphere in metal salt solution, stirring, filtering, and drying to prepare the magnetic core-shell alginate microsphere adsorbent. The magnetic core-shell alginate microsphere adsorbent has the adsorptive property of an alginate gel microsphere adsorbent to a part of anion and also has magnetic property; therefore, an adsorbing material is more convenient and rapid to recycle; the use recovery cost is reduced; the application range is enlarged; and the preparation method can be widely applied to anion adsorption concentration, settling separation and waste water treatment.

The invention provides an active coke gas purifying method and a device thereof with high desulfurization and denitrification efficiency, energy conservation, little resistance of a bed layer, high utilization rate of the space in an absorption tower and low construction cost. The device comprises a main feed inlet and a gas main outlet which are arranged at the upper part of the absorption tower, a main discharge outlet and a gas main inlet which are arranged at the lower part of the absorption tower and an active coke bed layer which is positioned in the absorption tower, and the active coke bed layer is tilted and has an included angle Alpha with the vertical line. The method has the following steps: gas enters the active code bed layer from the gas main inlet, gas in the tilted bed layer is flowed to the top from the bottom; active coke simultaneously enters the active coke bed layer from the main feed inlet, the active coke in the tilted bed layer is flowed to the bottom from the top; the gas is exhausted from the gas main outlet after the fully tilted convection contact is formed between the gas and the active coke, and the active coke after the saturation by absorption can be discharged from the main discharge outlet.

The invention discloses a composite type air purification filter element with a multilayered structure. The composite type air purification filter element comprises a coarse filter layer used for removing large-particle contaminants in air, a metal/molecular sieve layer used for adsorbing and decomposing corrosive gas in air, an organic adsorption layer used for adsorbing and catalytically decomposing organic harmful gas in air, a particle adsorption layer used for adsorbing small-particle contaminants in air and a sterilizing layer used for removing bacteria, molds and other harmful microorganisms in air. The composite type air purification filter element with the multilayered structure can effectively adsorb and treat various harmful substances, solves the problems that a traditional air purification filter element is single in function, low in efficiency and prone to produce secondary pollution and has the advantages of being high in adsorption efficiency and adsorption speed, large in adsorption capacity, wide in treatment range, environmentally friendly, capable of treating harmful gas and the like, and the market application prospects are wide.

The invention relates to an ionic liquid crosslinked chitosan modified zeolite adsorption material, a preparation method and application thereof. The preparation method includes: mixing and crosslinking chitosan and ionic liquid, then adding the crosslinked mixed liquid into liquid polyethylene glycol and epichlorohydrin to conduct secondary crosslinking, mixing the mixed liquid obtained by secondary crosslinking with zeolite powder, then adding the mixture dropwise into a sodium hydroxide solution to form sodium hydroxide solution-zeolite microspheres, and subjecting the microspheres to saponification, thus obtaining the adsorbent material. The preparation method provided by the invention has the advantages of simple process conditions, easy operation and low cost, the prepared adsorbent material has significant treatment effect on compound heavy metal ion wastewater, especially on anion and cation containing compound heavy metal ion wastewater.

The invention discloses an adsorbent for removing antibiotics from a water body. The adsorbent comprises components from readily available materials, is environment-friendly, clean and low in cost, treats waste by using waste, has a good and stable adsorption effect, can be recycled after being used and discarded, can adsorb various antibiotics in the water body subjected to antibiotic combined pollution simultaneously, can effectively reduce the peculiar smell and turbidity of the water body, and is suitable for treating antibiotic-containing water bodies such as livestock and poultry breeding wastewater, pharmaceutical wastewater and the like. The adsorbent for removing the antibiotics from the water body consists of the following raw materials in percentage by mass: 40 to 80 percent of bentonite, 1 to 10 percent of sodium chloride, 1 to 10 percent of hexadecyl trimethyl ammonium bromide and 12 to 58 percent of fly ash.

The invention discloses a preparation method and use technique of sulfydryl cotton stalk bark. The method is characterized by comprising: adding 48 to 52 mass percent of thioglycolic acid, 36 to 46 mass percent of tetrahydrofuran, 2 to 4 mass percent of acetic anhydride, 0.2 to 0.5 mass percent of concentrated sulfuric acid and 12 to 20 mass percent of degummed cotton stalk bark into a triangularflask with a plug, plugging the triangular flask, stirring and refluxing at 55 to 65 DEG C for 3 to 4 hours, washing with deionized water, filtering under vacuum, till the filtrate is neutral, washing with a small amount of ethanol, drying in an oven at 35 DEG C, and thus obtaining the sulfydryl cotton stalk bark. The sulfydryl cotton stalk bark has high metal iron absorbability, can absorb and elute various metal ions in water, the absorption efficiency and speed of the sulfydryl cotton stalk bark are high, and the physical, chemical and mechanical properties of the sulfydryl cotton stalk bark are stable, the sulfydryl cotton stalk bark can be used in a wide pH value range, the high regenerability of the sulfydryl cotton stalk bark makes the repeated use times of the sulfydryl cotton stalk bark 10 percent higher than that of sulphydryl cotton, the waste of cotton stalk is utilized, cost is saved and environment pollution is avoided.

The invention relates to a load type arsenic adsorbent, a preparation method and application thereof, and an arsenic removal method. The adsorbent contains an aluminium oxide carrier and an iron element loaded on the aluminium oxide carrier. The load type arsenic adsorbent contains the aluminium oxide carrier and the iron element loaded on the aluminium oxide carrier. In the load type arsenic adsorbent, the 2[Theta] maximum peak intensity of the X ray characteristic peak of the iron element is 33.5 degrees; the dry basis weight of the load type arsenic adsorbent is taken as a standard, and thecontent of the iron element which is metered in terms of oxide is 10w% or below. The preparation method comprises the following steps: carrying out impregnation on the aluminium oxide carrier in mixed liquid containing ferric iron salt and organic acid, loading the ferric iron salt on the aluminium oxide carrier to obtain a load type arsenic adsorbent precursor, and drying and roasting. The arsenic removal method comprises the following steps: enabling the adsorbent to be in contact with the arsenic to remove the arsenic. According to the load type arsenic adsorbent, arsenic can be efficiently gathered, and especially, gaseous phase arsenic is suitable for arsenic removal processing for arsenic-contained smoke.

The invention discloses an activated carbon material having electrostatic adsorption and anion releasing effect. The activated carbon material is characterized in that the activated carbon material is prepared from the following raw materials in part by weight: 135-150 parts of activated carbon, 2-3 parts of aluminum hydroxide, 2-3 parts of palmitic acid, 3-5 parts of propylene glycol, 5-7 parts of ferric chloride, 12-14 parts of bentonite, 2-3 parts of ammonium chloride, 1.5-2.5 parts of dimethyldioctadecylammonium bromide, 6-9 parts of tourmaline powder, 4-6 parts of adsorption assistant and appropriate amount of water. According to the activated carbon material, a surface active agent, bentonite and other ingredients are added for modifying the activated carbon, dusts in air can be adsorbed into the activated carbon material due to electrostatic adsorption of the tourmaline powder, and anions are released simultaneously and are beneficial to human body; and the adsorption efficiency is improved due to addition of the adsorption assistant. The filter material can effectively remove acid or alkaline or compound type volatile harmful gases, has long service life and is suitable for production of a filter screen of the air conditioner and the like.

The invention discloses a method for preparing a renewable magnesium-containing heavy metal adsorbent and an adsorbent prepared therethrough. The method comprises the following steps: preprocessing a catalysis carrier, impregnating the catalysis carrier in s magnesium source solution, standing the impregnated and adsorbed catalysis carrier in ammonia water or a sodium hydroxide solution to precipitate magnesium ions, cleaning the obtained aged magnesium-containing active carbon until the solution is clear, drying the cleaned magnesium-containing active carbon to obtain the high-efficiency magnesium-containing heavy metal adsorbent. An active component Mg(OH)2 and the carrier active carbon are mutually bonded to form the heavy metal adsorbent having specific properties. The magnesium-based material is loaded to the carrier having rich pore structures and a large specific surface area by using the high activity and the high adsorbing capacity, so the disadvantages of high treatment cost and difficult recovery of single adsorbent are overcome, and a proper desorbent (complexing agent) is used to desorb and enrich heavy metals in order to regenerate the supported adsorbent.

The invention relates to a preparation method of an alpha-FeOOH nanorod-loading porous charcoal composite material, relates to a preparation method of the porous charcoal composite material, and aimsto solve the problems that an existing method for loading nano particles on a porous carbon material is high in cost, and nanoscale FeOOH particles are easy to agglomerate. The method comprises the following steps: (1) pyrolyzing and carbonizing a charcoal raw material; (2) cleaning the pyrolyzed and carbonized charcoal raw material, drying, immersing into an acidic oxidizing agent solution, heating, flushing, and drying to obtain a porous charcoal material; (3) immersing the porous charcoal material into a ferric salt water solution, stirring, adding a strong alkaline solution, uniformly mixing, putting mixed liquid into a reaction kettle, carrying out hydrothermal reaction, and finally vacuum drying to obtain the alpha-FeOOH nanorod-loaded porous charcoal composite material. Maize strawsas agricultural waste are low in price and easy to get, so that the cost is reduced when the maize straws are adopted as a carbon source. The preparation method of the alpha-FeOOH nanorod-loaded porous charcoal composite material, provided by the invention is applied to the field of biological composites.

The invention discloses a Binchotan-added activated carbon filter material for air conditioners. The Binchotan-added activated carbon filter material is characterized by being prepared from the following raw materials, by weight, 135-145 parts of cocoanut active charcoal, 10-15 parts of Binchotan, 2-3 parts of potassium hydroxide, 3-4 parts of brown sugar, 12-14 parts of zeolite powder, 7-9 parts of meerschaum powder, 3-5 parts of seaweed meal, 1-2 parts of sodium alginate, 1-2 parts of D-sodium erythorbate, 4-6 parts of sodium chloride, 4-6 parts of an adsorbent-aid and a proper amount of water. Apart from the addition of components such as zeolite powder, meerschaum powder and the like that enhance the adsorbing effect, the component Binchotan is also added, enhancing adsorptivity of activated carbon, releasing negative ions, blocking electromagnetic wave and appropriately adjusting indoor humidity. The component Binchotan has an excellent health-care effect. In cooperation of the adsorbent-aid, adsorption efficiency is enhanced, and indoor harmful gases are removed rapidly to make the air indoors fresh and pleasant. The preparation process is simple, and the activated carbon filter material has long service life and can repeatedly be used.

The invention discloses a modified water-soluble chitosan flocculating agent and a preparation method thereof. The preparation method comprises the following steps: a carboxymethyl reaction step: dispersing chitosan into a mixed solution of isopropanol and sodium hydroxide, stirring for alkalization so as to obtain a reaction mixture, dissolving monochloro acetic acid into isopropanol to obtain asolution, dropwise adding the solution into the reaction mixture, reacting for 3-5 hours, adding an ethanol water solution to terminate the reaction, washing, and drying, so as to obtain carboxymethylchitosan; and a cross-linking reaction step: dissolving carboxymethyl chitosan into hydrochloric acid, adjusting the pH value to 5, dissolving 3,4-dihydroxyphenylacetic acid into a certain amount ofwater to obtain a solution, adding the solution into a carboxymethyl chitosan solution, dissolving a mixture of EDC and NHS into mixed liquid of water and ethanol to obtain a solution, adding the solution into a reaction solution, adding hydrogen peroxide into the reaction solution, stirring to maintain the pH value of the reaction solution at 4.5-5.0, and reacting at the room temperature for 9-11hours, so as to obtain the modified water-soluble chitosan flocculating agent. The flocculating agent disclosed by the invention has good water solubility and flocculating property.

The invention relates to a double-caterpillar-band wall-climbing monitoring robot. The double-caterpillar-band wall-climbing monitoring robot comprises a static electricity generator, a battery pack, a control transmission module, a camera and a pair of drive motors, wherein the static electricity generator, the battery pack, the control transmission module, the camera and the drive motors are arranged on a base. Caterpillar band frames are arranged on the two sides of the base and each caterpillar band frame is covered with a caterpillar band. Each caterpillar band is a flexible comb-tooth-type bipolar caterpillar band. The two sides of each caterpillar band are respectively provided with a tooth root. A plurality of comb teeth connected with every two tooth roots on the two sides are arranged between the corresponding tooth roots in parallel. Each comb tooth is covered with a polyimide insulation material. The static electricity generator is connected with the caterpillar bands through electric brushes, so that the tooth roots and the comb teeth of the caterpillar bands carry high-voltage positive static electricity and high-voltage negative static electricity. A wall is stimulated to generate inductive charges so that the whole monitoring robot can be attached to the wall. The double-caterpillar-band wall-climbing monitoring robot is reasonable in structure, strong in attraction capacity, flexible in movement and capable of achieving inclined walking and zero-radius turning. The double-caterpillar-band wall-climbing monitoring robot is wide in application prospect in the fields of anti-terrorist investigation, high-rise detection and the like.

The invention discloses a preparation method and application of cyanobacteria modified biochar with high adsorption efficiency, and the preparation method comprises the following specific steps: S1, primary carbonization: drying and crushing cyanobacteria, conducting carbonizing in an inert atmosphere, raising the temperature from room temperature to 300 DEG C, keeping the temperature for 1-2 hours, and conducting cooling to obtain a primary carbon material; S2, secondary carbonization: crushing the primary carbon material, mixing the crushed primary carbon material with KOH according to a mass ratio of 1:(2-3), and adding deionized water to make the concentration of KOH be 20-40%, drying the obtained mixture, conducting carbonizing in an inert atmosphere, raising the temperature from roomtemperature to 700 DEG C, keeping the temperature for 1-3h, and conducting cooling to obtain a coarse carbon material; and S3, post-treatment: adding 20-40% of HNO3 or HCl into the crude carbon material, conducting oscillating in a shaking table for 2-3 hours, removing the supernatant, washing the obtained solid with water until the solid is neutral, and conducting drying to obtain the modified cyanobacteria biochar. The cyanobacteria modified biochar with high adsorption efficiency prepared by the method is applied to water treatment and soil remediation, and has adsorption and immobilization effects on organic pollutants.

A cigarette filter for removing gas phase constituents from mainstream cigarette smoke as the smoke is drawn through the filter primarily comprises an activated carbon fiber filter section including a bundle of activated carbon fibers. Particulate adsorbent materials such as granules, beads or course powders may be dispersed amongst the activated carbon fibers to aid in removal of the gas phase constituents. Additionally, the activated carbon fiber filter section may be used in combination with a separate bed or beds of particulate adsorbent material. In one embodiment, the activated carbon fibers are positioned within a helical groove on the outside of a threaded rod within the activated carbon fiber filter section. Relatively smaller amounts of activated carbon fibers produce the same smoke constituent reduction as larger amounts of particulate adsorbent material.

The present invention belongs to the technical field of environmental materials, and discloses a modified slag adsorbent for anion dye wastewater treatment, and a preparation method thereof. The preparation method comprises: washing, drying, crushing and screening slag; preparing a sodium chloride solution, and mixing the sodium chloride solution and hydrochloric acid to obtain a mixed solution; and slowly adding the mixed solution to the slag, carrying out a stirring reaction, standing, drying, and grinding to obtain the modified slag adsorbent. According to the present invention, the preparation method has characteristics of simpleness, rich raw material source, low price, and waste recycling; after the modification, the micro-pores of the slag are increased, the specific surface area is increased, and the adsorption capacity of the adsorbent is further enhanced; and the adsorbent of the present invention has the good anion dye wastewater treatment effect, has the high equilibrium adsorption capacity, and especially has the good Acid Green 27 adsorption effect.

The invention discloses a photocatalysis bio-adsorbent and a preparing method and application thereof. The photocatalysis bio-adsorbent comprises phanerochaete chrysosporium balls, graphite type C3N4 and calcium alginate, wherein graphite type C3N4 is wrapped in hyphae of the phanerochaete chrysosporium balls through calcium alginate. The preparing method comprises the steps of adding graphite type C3N4 to sodium alga acid solution for ultrasonic dispersion, then adding phanerochaete chrysosporium spore suspension, conducting uniform mixing, adding obtained mixed solution to calcium chloride solution dropwise for hardening, and conducting shake cultivation on embedding spheres obtained after hardening so as to obtain the photocatalysis bio-adsorbent finally. The photocatalysis bio-adsorbent has the advantages of being high in photocatalysis capacity, high in adsorption efficiency, low in cost, convenient to separate and recover and the like. The photocatalysis bio-adsorbent can be used for treating composite waste water containing cadmium and 2,4,6-trichlorophenol, the heavy metal cadmium and the organic pollutant 2,4,6-trichlorophenol in waste water can be removed at the same time, and adsorption degradation efficiency is high.

The invention discloses a coalescent wet-type fire evacuation anti-poison and anti-smoke mask which comprises an outer layer, a physical filter layer, a coalescent wet adsorbent layer and an inner layer, wherein adsorbent medical liquid sealed in a thin plastic bag is packed together with a mask main body. According to the invention, coalescent adsorption is applied to respiratory protection article for the first time, and the protection principle is based on coalescent wet adsorption; and specifically, the physical filter layer and the coalescent wet adsorbent layer form two adsorbent filter layers for the fire smoke. The mask worn in the fire disaster can effectively protect from harm of poison and smoke in the fire scene, so as to strive for more time for the persons to safely evacuate and escape.

The invention provides phenolic hydroxyl modified adsorption resin which is a grafted chloromethylated polyphenylene diene-divinyl benzene microsphere containing a phenolic hydroxyl group, and the content of the phenolic hydroxyl group is 1.50-2.86 mmol/g. The invention also provides application of the phenolic hydroxyl modified adsorption resin to the separation and the purification of stibene glucoside in polygonum multiflorum. According to the phenolic hydroxyl modified adsorption resin, the phenolic hydroxyl group is introduced onto the chloromethylated polyphenylene diene-divinyl benzene microsphere, so that the adsorption efficiency and the selectivity of the phenolic hydroxyl modified adsorption resin for the stibene glucoside in the polygonum multiflorum are improved; a technical support is provided for efficient separation and purification of the stibene glucoside in the polygonum multiflorum and other phenolic compounds. The phenolic hydroxyl modified adsorption resin has high selectivity, high adsorption capacity, high absorption efficiency and high resolution efficiency for the stibene glucoside in the polygonum multiflorum, and a high-purity stibene glucoside monomer component can be obtained through separation; the grafting ratio reaches 85.7 percent.

The invention relates to the technical field of water purifying agents and particularly relates to a composite type high-efficiency adsorbent for purifying water. The composite type high-efficiency adsorbent is prepared from the following components of: wooden activated carbon, calcined bentonite, coal tar, hydroxymethyl cellulose, modified calcium carbonate, sulfydryl wooden cellulose, montmorillonite, sodium hydroxide solution, hydroxyapatite, a binding agent and a pore-forming agent, wherein the hydroxyapatite is powder obtained by soaking desulfurized gypsum in phosphate solution, then conveying into a polytetrafluoroethylene reaction kettle for ageing and centrifugation, finally washing, drying and grinding; the binding agent is attapulgite clay; the pore-forming agent is one or mixture of more of ammonium carbonate, ammonium hydrogen carbonate and sodium hydrogen carbonate. The composite type high-efficiency adsorbent has the beneficial effects that the adsorbing efficiency is high, the spectrum for adsorbing pollutants can be broader, and due to use of a large amount of industrial side products, the production cost of the adsorbent can be obviously reduced and the environmental-friendly and economic benefits are higher.

The invention relates to the field of preparation of defluorination agents, and concretely relates to a preparation method and an application of a fly ash defluorination agent. The preparation methodof the fly ash defluorination agent comprises the following steps: fully mixing fly ash with clay; adding water, granulating the obtained mixture to prepare ceramsite, and drying the ceramsite; placing the dried ceramsite in a kiln, heating the kiln to 200-300 DEG C, keeping the temperature for 5-30 min, continuously heating the kiln to 950-1150 DEG C, keeping the temperature for 5-30 min, naturally cooling the obtained ceramsite, and taking out the ceramsite; and immersing the sintered ceramsite in an acid, alkali or salt solution, filtering the immersed ceramsite, and drying the filtered ceramsite to obtain the fly ash defluorination agent. The preparation method has the advantages of recycling of the industrial waste solid fly ash, low raw material cost and great social benefits. The fly ash defluorination agent has the advantages of good adsorptivity, high fluorine ion adsorption efficiency and large adsorption capacity. The fly ash defluorination agent can be used as an adsorbentfor a simple water treater, and can adsorb fluorine ions after being directly added to high-fluorine water and stirred.

The construction unit of a cucurbit[8]uril-based porous supermolecular assembly adopts cucurbit[8]uril (CB[8]) as a main body and a hexasubstituted naphthyl imidazolium salt polypyridyl ruthenium complex (SIMRu(bpy)3) as an object, and a binary supermolecular aggregate constructed through bonding the main body and the object can effectively adsorb various types of anion compounds in water. The assembly can be combined with electronegative anions through electrostatic interaction by exchanging counter ions, and the supermolecular assembly can stably exist in water to avoid escaping of anion compounds from the solid assembly, so the supermolecular assembly has a high adsorption efficiency; multivalent positive charges exist in the object molecule, so the anion adsorption speed of the supermolecular assembly is fast, and the anion compounds in water can be rapidly removed; and a preparation method of the supermolecular assembly has the advantages of simplicity, easy enforcement and low material cost, and the supermolecular assembly has wide application in removal of anion pollutants in water.

The invention discloses a method for removing dyes in water by using sludge of a water supply plant. The method comprises the following steps: drying aluminum sludge, iron sludge or aluminum/iron sludge in air, grinding to 1-200mu m, and calcining the sludge for 1-4 hours at 300-400 DEG C so as to obtain activated sludge; feeding the activated sludge and original sludge into dye wastewater respectively according to properties and characteristics of different dyes, retaining for 20-60 minutes, and filtering off the wastewater, thereby obtaining water of which the dyes are removed. The method is free of secondary pollution, simple to operate and feasible and efficient, and due to the idea that waste is treated by using waste, the cost of industrial dye wastewater treatment is lowered.

The invention discloses a preparation method of an adsorbing material for removing anions in water and application of the adsorbing material, and belongs to the technical field of sewage purificationtreatment in environmental protection. A chitosan acetic acid solution is taken as a material, liquid paraffin is taken as an organic dispersion medium, glutaric dialdehyde is taken as a crosslinkingagent, and a crosslinking chitosan microsphere is obtained through an emulsion crosslinking method. A crosslinking chitosan microsphere adsorbing agent prepared by adopting the method has good adsorption performance and cyclic utilization performance to iodine ions. Furthermore, the adsorbing agent also can adsorb other halide ions and oxyacid radical-containing ions and has great adsorption capacity. The adsorbing material prepared by the preparation method disclosed by the invention provides a new technical reference for removing anions in wastewater and has good recovery and cyclic utilization effects. The raw materials required for the adsorbing material are natural, nontoxic, universal and easily available, and the adsorbing material is low in price, simple in preparation process, high in treatment efficiency, short in treatment period and convenient for regenerated treatment and is an effective adsorbing agent for treating anions in wastewater.

The invention discloses a PS/Fe3O4/graphene composite aerogel and a preparation method thereof. The preparation method comprises the following steps: carrying out ultrasonic dispersion on graphite oxide (GO) to form a dispersion, adding ethylene diamine and Fe3O4, carrying out ultrasonic dispersion until uniformity, sealing the obtained solution, carrying out water bath heating, freeze-drying the obtained solution to obtain a non-compressive Fe3O4/graphene composite aerogel, carrying out microwave radiation under vacuum conditions to obtain compressive Fe3O4/graphene composite aerogel, and carrying out PS hydrophobic modification to obtain the PS/Fe3O4/graphene composite aerogel. Fe3O4 nanoparticles are used as a magnetic response material, so multifunctional composite aerogel which can mechanically and magnetically recovered is simply and efficiently prepared. The cheap and environmentally-friendly PS is used to super hydrophobic modification in order to prepare a super oil absorption material with the oil adsorption performance being high and reaching 30 times, and the material can be repeatedly multiply used after being mechanically or magnetically recovered, and has a very good adsorption effect on large-range overflow oil and water surface oil stains.

Disclosed is a method for removing heavy metal cadmium in water by potassium hydroxide modified enteromorpha biochar. The invention provides a preparation technology of biochar using Enteromorpha as araw material and potassium hydroxide two-step method for modification. The used raw material is marine pollutants. The raw material is rich in resource and low in cost and does not compete with people for food. The method realizes the transformation of marine pollutant enteromorpha into treasure and realizes the industrial production. Meanwhile, the potassium hydroxide modified enteromorpha biochar has the advantages of large specific surface area and high adsorption efficiency and provides a novel adsorption material for heavy metal cadmium adsorption. The effect of modified biochar obtainedby the two-step modification method for adsorbing and removing the heavy metal cadmium in water is more than 5 times that of unmodified biochar.

The invention discloses a Cr(VI) wastewater treatment method. The method includes the following steps that 1, phosphoric acid modified peanut shells are prepared; 2, phosphoric acid modified wood bits are prepared; 3, the phosphoric acid modified peanut shells prepared in the step 1 and the phosphoric acid modified wood bits prepared in the step 2 are mixed by the mass ratio of 1:(1-4) to prepare composite adsorbent; 4, the composite adsorbent is put into Cr(VI) wastewater according to the amount of 0.1-0.7 g/100 mL, oscillation adsorption is carried out for 20-120 min at the speed of 40-140 r/min and the temperature of 25-65 DEG C, and the pH value of the Cr(VI) wastewater is 1-12. The phosphoric acid modified peanut shells and the phosphoric acid modified wood bits are mixed to treat the wastewater contaminated by Cr(VI), the efficiency of Cr(VI) adsorption is high, the operation process is simple, the adsorption condition requirement is low, the adsorption material is low in cost, and the purpose of treating pollution by waste is achieved.

The invention relates to the technical field of exhaust gas treatment, and in particular, relates to an environmentally friendly asphalt fume adsorption treatment device and method. The device comprises a box body which is provided with an air inlet and an air outlet; the device is characterized in that the box body is provided with a powder layer and a cloth bag filter layer in turn from the airinlet to the air outlet, and the powder layer includes a porous air permeable plate and a powder arranged on the top surface of the porous air permeable plate, and asphalt fume is adsorbed for the first time when passing through the powder after passing through the porous air permeable plate; the powder forms a powder protection layer on the cloth bag filter layer, and the asphalt fume is adsorbedfor the second time when passing through the cloth bag filter layer. The contact area of the powder in the boiling state with the asphalt fume is greater, and the adsorption efficiency of the powderis higher. The powder protection layer on a filter cloth bag is uniform and compact, and the replacement velocity is fast; the reutilization of the powder does not produce secondary pollution.

The invention discloses a light-control type-ionic imprinting adsorbent, a preparation method and a regeneration method. The preparation method comprises the following steps: uniformly mixing a macrocyclic compound, a photosensitive monomer and lithium salt to prepare a raw material solution, adding a carrier, a crosslinking agent and an initiator into the raw material solution for reaction underan inert gas condition to obtain a template ion-containing imprinting polymer, putting the template ion-containing imprinting polymer into water, and desorbing template ions under an ultraviolet irradiation condition, thereby obtaining the light-control type-ionic imprinting adsorbent, wherein the macrocyclic compound is calixarene, cyclodextrin, crown ether or cucurbituril, and the photosensitivemonomer is spiropyrane, an azobenzene derivative, diarylethene or fulgide.