31results about How to "Adsorption" patented technology

The invention discloses biochar capable of adsorbing heavy metals and a preparation method of the biochar, the biochar comprises shaddock peel biochar, and the biochar is prepared by the following method: cutting shaddock peel into pieces, cleaning with water to remove impurities, drying to constant weight, crushing and sieving; adding absolute ethyl alcohol and NaOH, mixing and stirring, adding aMgCl2 solution, mixing and soaking, carrying out suction filtration, washing with water until the pH value is neutral, and drying; and putting the dried shaddock peel into a tubular furnace, heatingto 300-600 DEG C in vacuum, calcining, and cooling to obtain the product. The method has the advantages of easily available raw materials, low cost, easy popularization and application, high efficiency, economy, environmental protection and the like. Through a large number of experimental screening, shaddock peel and other wastes are fully utilized, waste is turned into wealth, and the product isprepared through a preferred process. Comparison experiment screening results show that compared with unmodified biochar, the biochar obtained after the shaddock peel is modified through a specific process has a better pore structure and a better heavy metal adsorption capacity.

The invention discloses a graphene melt-blown fabric, a manufacturing process and a protective article thereof. Graphene powder is adhered to melt-blown fabric fibers in a distribution mode, the adhesion is that graphene powder particles are partially embedded into the melt-blown cloth fibers, or the graphene powder is adhered to the surfaces of the melt-blown cloth fibers, or the graphene powderis adhered to the fibers in a coating mode, and the graphene melt-blown fabric is compounded with non-woven fabric and then can be used for manufacturing the graphene melt-blown cloth protective article. The graphene melt-blown fabric has high adsorption and filtration performance, is capable of effectively removing harmful gas and preventing static electricity and tearing-resistant, and have better anti-virus and antibacterial effects.

The invention relates to an adsorption material used in heavy metal sewage treatment, and particularly provides an adsorbent used in heavy metal containing sewage treatment, and a preparation method of the adsorbent. Rice hull powder serves as a base body, and after grafting modification through 4-vinylbenzoic acid and N-tert-butyl acrylamide, the adsorption effect of the rice hull powder on heavymetal ions is greatly improved; meanwhile, the adsorbent used in heavy metal containing sewage treatment and prepared from multiple components is further prepared by adopting the improved rice hull powder as the main raw material and combining polyacrylamide, an ethylene-vinyl acetate copolymer, a carbon nanotube, a compatilizer, a coupling agent and a foaming agent; and the adsorbent belongs toa foaming-type porous adsorbent and has better adsorption performance for the heavy metal ions in the sewage, meanwhile, the recovery cost of the adsorbent is low, a process is simple, and operation is easy.

The invention discloses a polysiloxane block copolymer of grafted cysteine and a preparation method and application of the polysiloxane block copolymer. The method includes: through ring opening polymerization of active anions, triggering cyclic monomers of hexamethyl cyclotrisiloxane, trimethyl triethylene trioxide and the like to perform ring opening polymerization through n-butyllithium to obtain PDMS (polydimethylsiloxane)-b-PVMS; through radical addition reaction of sulfydryl-vinyl, leading N-acetylcysteine groups to vinyl containing blocks to obtain PDMS-b-(PDMS-g-Acys); finally, subjecting acetyl to hydrolysis under acidic condition to obtain PDMS-b-(PDMS-g-Cys). Solid materials are soaked in a PDMS-b-(PDMS-g-Cys) water solution, an adsorption layer of the block copolymer can be formed on the surface of the materials, and the effect that surface adsorption of protein is reduced is achieved.

The invention relates to a high-temperature phase-change heat storage composite material and a preparation method thereof. According to the technical scheme, the method comprises the steps that ternary aluminum-based alloy powder is alternately washed with an acid solution and deionized water, dried in a protective atmosphere and placed in pressurized steam to be pretreated, and the pretreated ternary aluminum-based alloy powder is obtained; the pretreated ternary aluminum-based alloy powder is put into aluminum sol for vacuum impregnation, taken out, filtered, put into silica sol for vacuum impregnation, filtered, and taken out; the steps are repeated for 3-5 times according to an alternate impregnation method, and filtering and drying are performed to obtain the pre-coated ternary aluminum-based alloy powder; and the pre-coated ternary aluminum-based alloy powder is put into a high-temperature furnace, fired at 1100-1400 DEG C under an air atmosphere condition, and cooled to obtain the high-temperature phase-change heat storage composite material. The preparation method is simple in process, low in cost and easy for industrial production, and the prepared high-temperature phase-change heat storage composite material is high in shell strength, high in phase-change temperature, high in heat storage density, high in heat utilization rate and high in utilization efficiency, and is suitable for solar power generation, high-temperature industry and the like.

The invention provides a method for processing perfume wastewater through a Fenton combination process, and relates to the technical field of environmental protection. The perfume wastewater is processed through the flocculation, iron carbon reduction, Fenton oxidization, magnetization, ultraviolet and microorganism processing combination process, the COD and color degree of the perfume wastewaterare greatly reduced, the biodegradability of the perfume wastewater is remarkably improved, and the further processing difficulty of the perfume wastewater is reduced; the investment of process processing units and devices is reduced, and the processing efficiency and effect of the process are improved.

The invention discloses a method for preparing titanium dioxide by integrating adsorption and photocatalysis, which is characterized in that dodecyl-2-pyridine-methylamine is taken as a template, performed hydro-thermal reaction under ethanol-water system condition, an ethanol-hydrochloric acid solution is used for extracting the template to obtain an intermediate, a water passivation method is used for processing to obtain the titanium dioxide by integrating adsorption and photocatalysis. Compared with current materials, the adsorption, catalysis and moisture resistance of the prepared material under high wind speed (short connection time) condition possess substantial superiority, the method of the invention possesses wide application prospect in the indoor air pollution treatment field.

The invention relates to the field of heavy metal waste water treatment, and discloses a treatment method of mine pothole waste water containing heavy metals. The method comprises the steps that: mine pothole waste water containing heavy metals is delivered from the bottom of an absorption exchange column loaded with a heavy metal absorption material; the waste water is processed by the absorption exchange column, and is discharged from the top of the absorption exchange column. When the heavy metal ions in the mine pothole waste water containing heavy metals pass through the heavy metal absorption material, the heavy metal ions are absorbed on the surface of the heavy metal absorption material; when the heavy metal ions on the surface of the heavy metal absorption material are enriched to a saturated degree, a sulfuric acid solution with a certain concentration is used for desorbing the heavy metal ions absorbed on the surface of the heavy metal absorption material; the desorption liquid is subjected to electrodeposition, such that high-purity heavy metal materials are obtained. With the method provided by the invention, discharged pothole waste water can stably reach a standard, and metal recovery is also achieved. Therefore, enterprise efficiency and environmental safety are both ensured.

The invention discloses a drying agent and a preparation method thereof. The drying agent is prepared from the following components in percentage by weight: 30-40% of magnesium chloride, 7-9% of activated carbon, 45-56% of chitosan, 3-5% of pelargonium odoratissimum essential oil, 1-2% of mint essential oil, and 1-3% of lavender essential oil. The components are directly and uniformly mixed so that the drying agent can be obtained. The drying agent concurrently has the effects of moisture absorption, bacterium resistance and incensing, under the condition of the temperature being 30 DEG C and the humidity being 90%, after 15 days, the moisture absorption of the drying agent can reach 380% or above of the self weight of the drying agent, and besides, no liquid water permeates out.

The invention relates to a biodegradable filling for the restoration of an alveolar bone, comprising first crosslinking type collagen fibers and supporting granules, wherein the first crosslinking type collagen fibers are prepared by reacting a crosslinking agent with non-crosslinked collagen fibers; and the supporting granules are biomedical ceramic granules, bioactive glasses or combinations ofthe biomedical ceramic granules and the bioactive glasses and distributed in the first crosslinking type collagen fibers.

The invention relates to a water quality improver, in particular to a water quality improver for aquaculture ponds, and also to a preparation method of the water quality improver. The water quality improver is prepared from the following components: finely ground banana peel, peppermint oil and potato decoction are subjected to low-temperature-shock-high-temperature repeated reaction for 2-3 times, soaked with mugwort leaves, phoenix leaves, lotus leaves, and enteromorpha After drying, it is fired, and then compounded with 150-mesh bentonite, 200-mesh bentonite, 600-800nm ​​diatomite powder and xanthan gum. The water quality improver of the present invention can improve pond water quality, reduce ammonia nitrogen and nitrite in aquaculture water, and improve water transparency and dissolved oxygen.

The invention discloses an auxiliary dust removal device for an electric drilling machine. The auxiliary dust removal device comprises a main hollow shell, wherein multiple rollers are mounted at thebottom of the main hollow shell; a liquid storage space is arranged on one side in the main hollow shell; a turbine mounting space is arranged on the other side in the main hollow shell; and a liquidinjection pipeline forming an integrated structure with the main hollow shell is arranged at the top of one side of the main hollow shell. The auxiliary dust removal device for the electric drilling machine can suck dust, produced during working of the electric drilling machine, in time; and furthermore, after the device sucks the dust, the dust can be injected into liquid; by use of the adhesionproperty and the suction property of water, the dust is effectively filtered, so as to reduce the density of the dust. In addition, the device is provided with a dust suction telescopic type pipelinemechanism, so that the device can achieve dust suction effects on different drilled parts by adjusting the horizontal height and is high in applicability; and furthermore, with a drill bit part dust suction mechanism, the device can achieve a dust suction effect on a dust production part.

The invention discloses a modified medical stone filter material for treating ammonia-nitrogen industrial wastewater and a preparation method of the modified medical stone filter material. The modified medical stone filter material is prepared by the steps of a, cleaning medical stone, and adding a hydrochloric acid solution for soaking to obtain acid-treated medical stone; b, adding into a mixedsolution consisting of carboxymethyl chitosan, sodium alginate and water, heating, stirring and reacting to obtain medical stone with a surface active group; and c, adding into a sodium hydroxide solution, soaking, reacting, filtering, adding a magnesium ammonium phosphate sinter and sodium bicarbonate, carrying out mold pressing, and drying to obtain the modified medical stone filter material fortreating ammonia-nitrogen industrial wastewater. The method has the beneficial effects that the medical stone filter material prepared by the method has surface active groups and good adsorption performance, not only can the adsorption effect of medical stone on ammonia and nitrogen be exerted, but also the removal capacity of the medical stone on ammonia and nitrogen in water can be improved through the adsorbability of the added magnesium ammonium phosphate sinter when the medical stone filter material is used for treating the ammonia -nitrogen wastewater. Meanwhile, the preparation processis simple, and the modified medical stone filter material is safe and environment-friendly and does not generate secondary pollution.

The invention relates to a preparation method of a silane modified poly-ampholyte hydrogel high-adhesion coating with bacteriostasis and algae adhesion resistance, which comprises the following steps: mixing DAC, NaSS, a cross-linking agent, an initiator, deionized water and MEMO to obtain a prepolymer solution, covering the prepolymer solution on the surface of a base material subjected to hydroxylation treatment and silane treatment, and forming to obtain a hydrogel coating, the antibacterial and seaweed adhesion resistant silane modified polyampholyte hydrogel high-adhesion coating is obtained. The silane modified polyampholyte hydrogel is adopted, through the coupling effect of silane and the synergistic effect of DAC molecular chains and ionic bonds of the substrate, the hydrogel coating has the excellent bonding performance, meanwhile, the hydrogel coating has the good antibacterial performance and diatom adhesion resistance, and the hydrogel coating can serve as a preferred material of a marine antifouling coating. Wide application prospects are realized.

The invention discloses an artificial rapid infiltration tank, a treatment process and a preparation method of an active biological filler. A water vapor treatment tank is provided with functional layers, the functional layers comprise a filler layer, a barrier layer and a supporting layer which are respectively used for culturing and inoculating microorganisms, carrying out grading filling and collecting water vapor, and the water vapor treatment process realizes purification treatment on wastewater and waste gas by utilizing an active biomass carbon filler. Compared with the prior art, the artificial rapid infiltration tank disclosed by the invention can realize dual purposes of water and gas purification, and is more sufficient in filler source, more controllable in cost, more controllable in quality uniformity of the filler, more reliable in safety, uniform in quality of the active biomass carbon filler, and more convenient to process, construct, manage and control. The phosphorus adsorption effect can be better exerted, and more space is fully utilized.