274results about How to "Improve adsorption strength" patented technology

A halogen treatment is conducted comprising: a halogenation step wherein a halogenation heat treatment for preparing a halogenated carbonized charcoal is conducted in which the carbonized charcoal is brought into contact with halogen; and a dehalogenation step wherein a dehalogenation treatment is conducted in which a part of or all halogen atoms in the halogenated carbonized charcoal are eliminated. A porous carbonaceous material is obtained at a high yield, and the amounts of nitrogen, oxygen, carbon dioxide, and methane adsorbed by this porous carbonaceous material are large. When this porous carbonaceous material is used as an electrical double layer capacitor carbon, the electrostatic capacity is increased compared to conventional carbonaceous materials. Consequently, a carbonaceous material is obtained which has micopores and/or sub-micropores which are suitable for the adsorption of small molecules such as nitrogen, and for storage of electrochemical energy.

The invention relates to a wear-resistant additive for low-sulphur hydrogenated diesel, comprising a component A with an alcohol ester structure and also optionally comprising an auxiliary agent B with an alcohol ester structure, an auxiliary agent C with an ester structure, an assistant D or mixtures of B, C and D. The mass ratio of the component A to the component B to the component C and the component D is 100:0-42:0-10:0-0:10. Under the condition of adding 200 mug of wear-resistant additives to every gram of low-sulphur hydrogenated diesel, the diameter of a wearing crack of the low-sulphur hydrogenated diesel is reduced to 422 mum from 742 mum. By adopting plant oleic acid as the raw material, the wear-resistant additive for low-sulphur hydrogenated diesel in the invention has the advantages of low acid value, environmental protection and small addition.

The invention discloses aluminum modified straw biomass charcoal as well as a preparation method and an application thereof on removing arsenic in a water body. The straw biomass charcoal is formed by 350DEG C oxygen-controlled pyrolysis of peanut straws, soybean straws, rape straws, straws or other crop straws. The aluminum modified straw biomass charcoal is prepared by mixing and alkalifying straw biomass charcoal and 0.6mol/L of aluminum solution. A method for removing As (V) in the water body by the aluminum modified straw biomass charcoal comprises the following steps of: mixing the aluminum modified straw biomass charcoal with arsenic containing solution at the ratio of 1g/L in a reaction tank; continuously stirring for 2 hours; standing for 20 hours; stirring for 0.5 hours; after standing for 1.5 hours, separating the aluminum modified biomass charcoal from mixed liquor by a sand filtering device; discharging clear liquid; burning the biomass charcoal used for processing waste water after the biomass charcoal is subjected to air drying; and recovering ash contents and residues. The method is cheap and efficient and is free from secondary pollution.

The invention discloses a hierarchical-pore nitrogen-doped carbon material and a preparation method thereof and belongs to the field of material chemistry. The hierarchical-pore nitrogen-doped carbon material is prepared from components of raw materials as follows: a metal-organic framework material, a structure-directing agent, phenol, aldehyde, urea and an alkaline catalyst in the mass ratio being 1:(1-30):(0.5-20):(0.5-20):(0.1-10):(0.5-2). The mesoporous shell structure of the hierarchical-pore nitrogen-doped carbon material facilitates rapid dispersion of gas in pore passages, inside microporous cores facilitate gas adsorption, and meanwhile, the adsorption strength of pore passage surfaces and gas molecules is further improved as well through doping of nitrogen atoms in mesoporous shells and the microporous cores. Under the joint action of the mesoporous shell structure, the microporous cores and nitrogen atom doping, the provided hierarchical-pore nitrogen-doped carbon material has enhanced gas adsorption performance as compared with existing single-core and single-shell carbon materials.

The invention discloses a suspended filler for quick biofilm culturing of microorganisms. The suspended filler is prepared from, by weight, 65-75 parts of high-density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of ferroferric oxide magnetic powder and 0.1-0.3 part of manganese zinc ferrite. The density of the suspended filler for quick biofilm culturing of microorganisms is 0.96-0.98 g/cm3. The biofilm culturing speed is high, disengagement does not occur easily, treatment efficiency is high, and the suspended filler is suitable for treating low-concentration organic matter and ammonia nitrogen in sewage and low-concentration organic waste water. The suspended filler has extremely high hydrophilia and biocompatibility, the filler has high adsorption strength on biological films, biofilm culturing time is remarkably shortened, and the COD and ammonia nitrogen removal rate is increased remarkably.

The invention discloses suspended microbial packing for wastewater treatment and a preparation method thereof. The suspended microbial packing is prepared from, by weight, 65-75 parts of high density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of ferromagnetic oxide powder and 0.1-0.3 part of manganese zinc ferrite. The suspended microbial packing is high in film formation speed, not prone to fall off, high in treatment efficiency and suitable for treatment of low-concentration organic matter and ammonia nitrogen in sewage and low-concentration organic wastewater. The biological packing has the extremely high hydrophilicity and biocompatibility, has the very high adsorption strength to a biological film and is beneficial for interception and accumulation of biomass on a packing carrier, and therefore the packing can better adapt to wastewater treatment under the low concentration condition.

The invention discloses a large biofilm culturing amount MBBR suspended biofilm carrier and a preparing method thereof. The large biofilm culturing amount MBBR suspended biofilm carrier is prepared from, by weight, 65-75 parts of high density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin and 0.5-2 parts of magnetic powder; the density of the large-biofilm-culturing-amount MBBR suspended biofilm carrier is 0.96-0.98 g/cm<3>. The large-biofilm-culturing-amount MBBR suspended biofilm carrier is high in biofilm culturing speed, the biofilm does not easily shed, the treatment efficiency is high, and the biofilm carrier is applicable to treating low concentration organic matter, ammonia nitrogen and low concentration organic wastewater; the biofilm carrier has very high hydrophilicity and biocompatibility,the carrier itself has very high adsorption strength on biofilm and is beneficial to intercepting and accumulating biomass on the carrier.

The invention provides a flotation method for carbonate minerals. The method comprises the following steps of: grinding, roughing, sifting and scavenging, namely after grinding, regulating the mass percentage concentration of flotation mineral slurry to 10 to 30 percent, adding acidic solution with the concentration of 0.01 to 5 mol/L until the pH value of the mineral slurry ranges from 0.1 to 5,adding a collecting agent in amount which is 0.002 to 0.05 percent of mineral solids in the mineral slurry, adding a foaming agent in amount which is 0.001 to 0.02 percent of mineral solids in the mineral slurry, stirring at a speed of between 30 and 120 revolutions/minute, and roughing, sifting and scavenging conventionally to obtain concentrates. In the flotation method, due to the addition of sulfuric acid, carbon dioxide microbubbles generated by reacting carbonates with the sulfuric acid are adsorbed to the surfaces of the minerals, so that mineral granules are adsorbed to float upwards under the bridging action of the microbubbles attached between the mineral granules and big bubbles. By the method, the using amount of the collecting agent and the foaming agent is reduced, the concentrate grades are improved by the selective adsorption of the bubbles, a process flow is simplified, and a high assorting index can be reached only by assorting once.

The invention discloses a lignin dispersant for phenol-water coal water slurry, and a preparation method and application thereof. The preparation method comprises the following steps: adding a sulfonating agent into an alkaline alkali lignin solution, then adding formaldehyde, and reacting to obtain hydroxymethyl sulfonated alkali lignin; dissolving phosphate in water, adding epoxy chloropropane, and reacting to obtain a hydroxypropyl phosphate compound; and mixing the hydroxymethyl sulfonated alkali lignin and the hydroxypropyl phosphate compound, adding a condensing agent to perform condensation reaction, and then adding surfactant to obtain the lignin dispersant for phenol-water coal water slurry. The molecule of the lignin dispersant contains multiple hydrophilic functional groups such as sulfonic groups, phosphate groups and the like, so that the lignin dispersant has favorable dispersion/viscosity reduction capacity and stability for phenol-water coal water slurry in case of low consumption. The dispersion/viscosity reduction capacity of the lignin dispersant is far higher than that of the traditional lignosulfonate coal water slurry dispersant; and the dispersion stability of the prepared phenol-water coal water slurry is better in comparison with a naphthalene dispersant.

The invention relates to ceramic glaze and a manufacturing method thereof, in particular to theaflavin matt glaze for an antique ceramic bottle and a manufacturing method thereof. The theaflavin matt glaze is characterized in that titanium dioxide, antimony oxide, nickel oxide and potassium dichromate are adopted as raw materials to be blended and calcined into theaflavin coloring materials, and then the theaflavin coloring materials are mixed with feldspar, quartz, Suzhou soil, boron frit, dolomite and calcite to be smashed into theaflavin matt glaze. A ceramic product which is calcined with the theaflavin matt glaze is simple and unsophisticated in glazing color, good in antique effect, uniform in color and applicable to top-grade bottles.

The invention belongs to the technical field of functional materials and discloses a lignosulfonic acid-reinforced polypyrrole conductive paper and a preparation method thereof. The method comprises (1) separating a lignosulfonate through an ultrafiltration membrane and then purifying the lignosulfonate through a cation exchange resin to obtain lignosulfonic acid, (2) soaking a paper in the lignosulfonic acid for 10-30min, then soaking the paper in an aldehyde aqueous solution for 10-30min and heating the paper to 80-110 DEG C for a condensation reaction for 1-2h, (3) soaking the paper in a pyrrole solution for 10-30min, and (4) soaking the paper in a mixed solution of an oxidant and an inorganic acid for a reaction for 10-120min to obtain a self-assembled single-layer conductive paper andrepeating the above steps (2) to (4) to obtain a self-assembled multi-layer conductive paper. The lignosulfonic acid-reinforced polypyrrole conductive paper has high conductivity, good stability, adjustable loading capability and no dusting and can be used in the fields of surface heating materials, electromagnetic shielding materials and flexible electrode materials.

The invention discloses an acidizing corrosion inhibitor based on a dimer indolizine derivative and a preparation method and application of the acidizing corrosion inhibitor. The acidizing corrosion inhibitor contains the dimer indolizine derivative; and the dimer indolizine derivative is mainly obtained by further intermolecular dimerization of active alpha-cetyl trimethyl ammonium chloride of heterocyclic alkali such as (substituted) quinolone and (substituted) pyridine under alkali acceleration. The acidizing corrosion inhibitor has good corrosion inhibition under the condition that a common corrosion inhibition synergist such as alkynol does not need to be compounded, the use amount is small, and when the acidizing corrosion inhibitor is used independently, requirements of first-levelto third-level standard in an acidizing corrosion inhibitor performance testing method and an evaluation index SY/T 5405-1996 can be met and are even higher.

The invention discloses an evaporation device and method. The evaporation device comprises an evaporation base plate carrier. The evaporation base plate carrier is used for carrying an evaporation base plate. An electromagnetic module is arranged in the position, above the zone where the evaporation base plate is located, of the evaporation base plate carrier and comprises a plurality of electromagnetic units. The multiple electromagnetic units are used for energizing according to a preset sequence. According to the technical scheme provided by the invention, by arranging the multiple electromagnetic units for adsorbing metal masks, the problem that the whole metal masks are adsorbed, and consequently the metal masks are winkled or cannot be released due to winkling can be solved, meanwhile, the adsorption strength and switching can be better controlled through the electromagnetic units, and the position precision of patterns on the evaporation base plate can be improved.

The invention provides a preparation method of a keratin heavy metal adsorbent. The preparation method comprises the following steps: step I, cleaning and smashing a keratin raw material; step II, carrying out oxidation reaction on the ready keratin raw material: taking the keratin raw material, and putting the keratin raw material in an oxidant aqueous solution to carry out oxidation reaction, wherein an oxidant is a potassium monopersulfate composite salt or a sodium monopersulfate composite salt; and step III, carrying out reduction reaction on the oxidized keratin material: taking the oxidized keratin material, putting the oxidized keratin material in an aqueous solution containing a reducing agent to carry out reaction, and drying the obtained keratin material to obtain the keratin heavy metal adsorbent, wherein the reducing agent is one of sodium sulfite, sodium metasulfite, sodium bisulfite, potassium sulfite, potassium metasulfite and potassium bisulfate. The prepared heavy metal adsorbent has certain selectivity, is high in adsorption efficiency, low in cost, simple and convenient to operate, mild in required condition and does not generate secondary pollution.

The invention provides a preparation method and application of a sediment-water interface phosphorus release control material. For the first time, a lake sediment and kaolin mixture is used as a basic raw material, and processes like oxidation, iron salt modification, granulation and calcination are adopted, so that adsorption-desorption balance concentration EPC0 value of the material to phosphate is remarkably lowered, linear distribution coefficient Kd value of the material is increased, and the material can effectively reduce sediment interstitial water phosphate concentration and can inhibit sediment-water interface phosphate release. The material itself has weak phosphate desorption capability and high adsorption and buffering capability, so that the material can truly realize effective obstruction and control on sediment-water interface phosphorus release. The material is low in material cost, high in social and economic benefit and safety, free of ecological risk to lake water, energy-saving and environment-friendly and has remarkable effect on controlling sediment-water interface phosphorus release in different lake areas of the Dian Lake in the process of application.

The invention relates to a ruthenium/carbon catalyst with activated carbon subjected to supercritical CO2 treatment as a carrier and a method for preparing the catalyst. The method comprises the following steps of: (1) putting a certain amount of activated carbon into a reaction kettle, and introducing CO2 by using a high-pressure injection pump to reach the pressure of 8.0 to 14.0MPa; (2) raising the temperature of the reaction kettle to be between 60 and 100 DEG C; (3) keeping the supercritical condition for 2 to 6 hours, reducing the temperature, and relieving the pressure to obtain modified activated carbon; and (4) impregnating a certain amount of modified activated carbon into a RuCl3 aqueous solution for 4 hours, drying at the temperature of 120 DEG C, putting the dried sample intoa quartz tube of a tube-type heating furnace, reducing by using hydrogen at the temperature of 200 DEG C for 2 hours and at the temperature of 300 DEG C for 1 hour, closing a temperature controller, cooling to room temperature, and thus obtaining the ruthenium/carbon catalyst. The activity of the ruthenium/carbon catalyst prepared by the method is obviously improved due to the action of supercritical treatment, and the defect of a supercritical organic medium is overcome.

The invention discloses a preparation method of a porous carbon reinforced microbial biofilm culturing carrier material. The preparation method specifically comprises the following steps: mixing acidified biomass charcoal, a nano inorganic material, polyacrylamide and an amino starch adhesive, spraying a reaction medium, carrying out surface functional modification granulation, and carbonizing toobtain porous carbon; immersing porous carbon in activated sludge, and carrying out biofilm formation by adopting a continuous cyclic activated sludge supply method to obtain the microbial biofilm formation carrier material which can be applied to removal of nitrogen and phosphorus in a water body. Reaction media such as iron, calcium, lanthanum salt and the like permeate into premixed material molecules through high-temperature and high-pressure impregnation; metal colloid nanometer oxide is generated and loaded on the inner surface and the outer surface of the calcined and carbonized porouscarbon so that the adsorption active sites of the porous carbon and the adsorption capacity of nitrogen and phosphorus pollutants are enhanced, the requirement of biological coating on the surface ofthe carrier can be met within 36-48h in cooperation with the porous structure on the surface of the biochar, and the domestication time of subsequent active microorganisms is shortened.

The invention discloses a preparation method of a chiral separation membrane. The preparation method of the chiral separation membrane comprises the following steps: soaking a polymer membrane in an aqueous solution containing metal ions; taking out the polymer membrane a period of time later; transferring the polymer membrane into the aqueous solution containing a reducing agent; vibrating to enable the metal ions which are adsorbed to the surface of the membrane to be converted into metal elements; soaking the membrane loaded with metal in a chiral molecular solution which contains thiol anddiphenol structures; taking out the membrane a period of time later; and washing chiral molecules which are not adsorbed with deionized water to form the chiral separation membrane. The preparation method of the chiral separation membrane is simple and efficient, conditions are gentle, and large-scale application can be realized.

The invention discloses a preparation method of a high-adsorption-capacity water treatment agent. The preparation method comprises the following steps that corncob powder is fed into tartaric acid for soaking, microwave irradiation treatment is performed, and filtration is performed to obtain a first pre-prepared material; vermiculite power, lauryl sodium sulfate, cocamidopropyl betaine and water are mixed evenly, heating is performed in a water bath, ultrasonic dispersion is performed, a succinimide solution is added, the pH value of a system is regulated with hydrochloric acid to 7.1-7.4, microcrystalline cellulose is added for stirring, suction filtration is performed, washing is performed to reach a neutral state, and drying and grinding are performed to obtain a second pre-prepared material; absolute ethyl alcohol and toluene are evenly stirred, the first pre-prepared material, the second pre-prepared material and methyltriethoxysilane are added, heating and stirring are performed, centrifugation is performed, flushing is performed with deionized water to make pH value neutral, and drying and smashing are performed to obtain the high-adsorption-capacity water treatment agent. The obtained high-adsorption-capacity water treatment agent is large in adsorption capacity and good in hydrophilcity.