135results about How to "Good adsorption effect" patented technology

The invention provides a brand-new method to change the nature with the fibrous material and the environmental protection staining method to textile printing profession. Its characteristic lies in: join the prepolymer comprising the reactive hydrogen and the response functional group to the fibrous material. Chemical reaction between prepolymer's links the macro-molecule chain polymer, and solidifies on the fibrous material. The prepolymer nitrogen's percentage is: 5-45%. In this prepolymer at least one kind in hydrogen groups and bases, hydroxyl, amidogen and imides-group is included, and one kind of response functional group comprising chloromethyl group, epoxy group and 3-hydroxyl nitrogen heterocyclic ring butyl and the like, or combinations with any proportion of the three response functional groups are also included. After changing the nature, the fibrous material carries on the conventional craft dyeing with the anion dye or the coating in the environment without salt, the alkali, the urea. This invention has the craft to be simple, the dye use factor high, and the assistant amount few, which reduces the production cost, has saved the massive energy, and reduces the environment pollution.

The invention discloses a method for preparing bifunctional mesoporous silica for adsorbing heavy metal ions in water. The method comprises the following steps: P123 is used as a structure-directing agent, mesitylene is used as a hole-enlarging agent, and mesoporous silica with large hole diameter is prepared by adopting a hydrothermal synthesis method; then, a post-grafting method is adopted, a triamine silane coupling agent (3-[2-(2-Aminoethylamino)ethylamino]propyl-trimethoxysilane) and disodium edetate dihydrate are successively used as a modifying agent, and finally the bifunctional mesoporous silica with the large hole diameter is synthesized. The adsorbent preparation process is mild in production condition and is conducted at room temperature, and other chemical reagents are not needed. The adsorption effect is good, and production cost is reduced. Meanwhile, environmental pollution is reduced, and the bifunctional mesoporous silica has a good application prospect.

The invention discloses a manganese dioxide modified biochar composite material as well as a preparation method and an application thereof. The composite material is prepared from manganese dioxide and biochar by loading generated manganese dioxide on biochar through the neutralization reaction of permanganate and manganese in divalent manganese salt. The manganese dioxide modified composite material has the advantages of high adsorption capacity for heavy metal lead or cadmium, obvious adsorption effect, low preparation cost and the like, and is an ideal heavy metal wastewater adsorbent; thepreparation method of the composite material has the advantages of simple process, cheap raw materials, sufficiently used raw materials, low production cost and the like. The manganese dioxide modified composite material can be used for treating heavy metal wastewater, and has the advantages of high adsorption capacity for heavy metals, high adsorption efficiency, low toxicity to organisms in theenvironment and the like, and can be produced and applied on a large scale.

The invention discloses a composite magnetic nano-particle adsorbent. The composite magnetic nano-particle adsorbent is composed of a carrier and an absorbing component, the carrier is a core-shell composite micro-sphere, the core of the core-shell composite micro-sphere is made of ferroferric oxide, the shell is made of a polymer of porous silicon dioxide, a silane coupling agent and ionic liquid, and the size of the core-shell micro-sphere is 200-600 nm. The magnetic composite nano-particle adsorbent has the advantages that the particle size is uniform, the dispersity is good, the specific saturation magnetization is high, the number of active groups is rich, and the removing effect for azo dyes in water is good.

The invention discloses a molecularly-imprinted electrochemical sensor for detecting sunset yellow. According to the imprinted electrochemical sensor, through the electrode surface modification technology, the surface of a glassy carbon electrode is covered with prepared oxidized graphene / magnetic carbon dots / gold nano particle compounds, and then the purposes of enhancing electric signals and improving the detection sensitivity of the sensor are achieved. By means of an electric polymerization mode, molecularly-imprinted polymers with pyrrole serving as a functional monomer and sunset yellow serving as template molecules are modified to the surface of the electrode, after elution of the template molecules, holes are formed in the surface of the sensor, and the holes and the structure of sunset yellow can achieve specificity matching. The successfully-prepared electrochemical sensor is a working electrode, through specific binding of the template molecules on the surface of the electrode and the holes, the current change is generated, and specificity detection of sunset yellow can be achieved through the current change. The prepared molecularly-imprinted electrochemical sensor is high in selectivity, high in sensitivity, easy and quick to operate and suitable for detection of sunset yellow in food.

The invention discloses a preparation method and application of porous material with surface grafted beta-cyclodextrin, and belongs to the technical field of adsorbents. The preparation method comprises the following steps: preparing a polystyrene porous material by polymerizing concentrated emulsion, and then performing chloromethylation and amination reaction, feeding amino group into the surface of the polystyrene porous material, chemically modifying beta-cyclodextrin, feeding carboxyl group into the beta-cyclodextrin molecule, immersing the surface aminated polystyrene porous material in water solution of the carboxylated beta-cyclodextrin, reacting for 12-72 hours at 20-60 DEG.C under vacuum pumping condition to obtain the porous material with surface chemically grated beta-cyclodextrin. The porous material not only maintains the specific supermolecule performance of parent molecule, but also has unique macromolecule effect; since the cyclodextrin is starch fermentation product and good in environment compatibility, the cyclodextrin can be used for treating wastewater containing organic pollutant after being modified, the organic pollutant in the wastewater can be effectively removed, and the cyclodextrin is an ideal environment-friendly adsorbent.

The invention discloses preparation of a phosphotungstic acid composite material and an experimental method for testing the adsorbing performance of the phosphotungstic acid composite material to methylene blue. Dawson type H6P2W18O62 and a metal organic skeleton MOF-5 serve as raw materials. An adsorbent H6P2W18O62 / MOF-5 composite material is prepared through solvothermal, and representation is performed through IR, XRD, SEM and other means. The adsorbing performance of the phosphotungstic acid composite material to the methylene blue (MB) in an aqueous solution is researched, and influences of initial pH, temperature and MB in different initial concentrations on the adsorbing capacity are discussed. Compared with the prior art, the MOF-5 is modified through the H6P2W18O62, the organic skeleton composite material H6P2W18O62 / MOF-5 is synthesized, the modified material has a good adsorbing effect on the methylene blue (MB), application prospects are provided for the situation that MOFs materials are used for liquid phase adsorption, and certain research significance is achieved.

The invention provides a method for treating acid uranium-bearing wastewater by utilizing modified chitosan adsorbents. Aimed at problems of complicated process, high operation cost and raw material cost and the like of uranium-bearing wastewater treatment in the uranium ore metallurgy process, the modified chitosan adsorbents are utilized for treating the acid uranium-bearing wastewater. The modified chitosan adsorbents include one or more of triethylene tetramine, ethidene diamine, diethylene triamine or tetraethylene pentamine modified chitosan adsorbents. The research shows that the modified chitosan adsorbents have good absorption effects on uranium and a high removing rate for uranium in low-concentration uranium-bearing wastewater, and the removing rate is larger than 95%.

The invention provides an automatic mounting system comprising a feeding mechanism, a workpiece taking and mounting mechanism, a sucking disc driving mechanism, an image collector, and a controller. The feeding mechanism comprises a feeding platform; the feeding platform is provided with stations; and the stations are used for placing workpieces. The workpiece taking and mounting mechanism comprises a sucking disc and a negative pressure system, wherein the sucking disc is used for getting / putting the workpieces, the sucking disc is provided with a plurality of dot matrix holes, and the negative pressure system is connected with the sucking disc and controls the sucking disc to absorb / drop the workpieces. The sucking disc driving mechanism is used for driving the sucking disc to move. The image collector is used for collecting workpiece images. The controller is used for correcting the workpiece images, and according to the deviation value and deviation angle between the workpiece images obtained after correction and a target position image, controlling the sucking disc driving mechanism to move and rotate until the workpiece is moved to the target position, and then, controlling the sucking disc to move up and down, and thus mounting of the workpiece is realized. The automatic mounting system can carry out automatic mounting on flexible workpieces or air-permeable workpieces which are irregular in shapes; and the automatic mounting system has the advantages of high mounting precision and high mounting efficiency.

A zirconium oxide modified activated carbon adsorbent for removing phosphates is prepared from the following raw materials: by weight, 100-120 parts of activated carbon, 3-4 parts of zirconium n-propoxide, 5-6 parts of sodium tripolyphosphate, 3-4 parts of sodium alginate, 1-2 parts of polyethylene terephthalate, 3-4 parts of octadecyl trimethyl ammonium chloride, 8-10 parts of modified attapulgite and a proper amount of water. The zirconium oxide modified activated carbon adsorbent using the zirconium n-propoxide for modification of the activated carbon can be applied to adsorption removal of the phosphates in water bodies, and has a strong adsorption property; the polyethylene terephthalate and other additives are also added to make the activated carbon be uniformly and stably dispersed in the water, thereby the adsorption effect is better; the zirconium oxide modified activated carbon adsorbent has the advantages of simple preparation, easily obtained materials, simple operation, obvious treatment effect, and good economic and environmental benefits.

The invention discloses a biosorbent removing lead ions in wastewater and preparation, application and regeneration methods thereof, the biosorbent is granular and uses calcium alginate and gelatin as carriers in which grapefruit peel powder is embedded, mass ratio of the calcium alginate, the gelatin to the grapefruit peel powder is (8-10):(4-5):1, the biosorbent is prepared by using mixed glue of the calcium alginate and the gelatin to cover the grapefruit peel powder to result in a sorbent embedding body, instilling the sorbent embedding body into CaCl2 solution for curing and washing the body with de-ionized water, and implementing freeze drying. The biosorbent of the invention is added into wastewater for proceeding adsorption treatment for at least 30 minutes at normal temperature in which pH value is 3.5-7.0, which can basically remove lead ions in the wastewater. The biosorbent of the invention has the advantages of abundant sources of raw materials, low cost, high mechanical strength and excellent adsorption effect on the lead ions in the wastewater.

The invention relates to a Serratia marcescens strain of which the collection number in China General Microbiological Culture Collection Center is CGMCC No.10711. The strain Sa is separated from soil. The strain Sa is identified to be Serratia marcescens through the observation on morphological features of the strain Sa, analysis on physiological biochemical characteristics and homology analysis on the 16Sr DNA (deoxyribonucleic acid) sequence. The Serratia marcescens strain provided by the invention has favorable control effect on blight of plants. The Serratia marcescens strain can be colonized in plant seedlings, and has obvious growth promoting actions on the seedlings. Besides, the determination of concentration changes of Pb<2+> in the culture medium by an atomic absorptiometry indicates that the Serratia marcescens strain can adsorb Pb<2+> in the culture medium and has favorable adsorbing effect.

The invention discloses a preparation method of a nanometer Fe3O4 (ferroferric oxide) / etherified bacterial cellulose composite heavy metal adsorbing material. The preparation method is characterized in that the characteristic of controllability of static fermenting culture of bacteria is utilized; sodium carboxymethylcellulose is added into a fermenting culture medium in situ, and is etherified and modified; after culturing is finished, the modified product, namely, etherified bacterial cellulose membrane material, is obtained; then, the template effect of bacterial cellulose is utilized, the frozen and dried etherified bacterial cellulose membrane is crushed, and the nanometer Fe3O4 / etherified bacterial cellulose composite heavy metal adsorbing material is synthesized by a co-blending precipitation method in situ. The preparation method disclosed by the invention has the advantages that the preparation method is simple, and the implementing is easy; the prepared nanometer Fe3O4 / etherified bacterial cellulose composite heavy metal adsorbing material has a good heavy metal ion adsorption effect, and easy separation, recycling effect, green and non-toxic effects, easy biodegradability, and important economic and social benefits are realized.

The invention provides a cesium selective adsorbent and a preparation method thereof. The method comprises the following steps: (a) uniformly dispersing inorganic ion exchanger powder in a chitosan solution to obtain an aqueous phase required by a reverse suspension method; (b) add emulsifier in aviation kerosene, obtain the required oil phase of inverse suspension method after fully stirring; (c) mix the water phase and oil phase that step (a) and step (b) obtain, in water-bath condition After stirring and dispersing for 3-5 hours, quickly pour into the coagulation bath, after stirring and layering, fully clean the gel microspheres at the bottom of the solution; (d) mix the gel microspheres and crosslinking agent obtained in step (c) performing a cross-linking reaction, washing and drying the cross-linked microspheres to obtain the cesium selective adsorbent. The cesium selective adsorbent prepared by the present invention has good adsorption effect, ＋ It has high selectivity and large adsorption capacity.

The invention relates to an intercalated titanium-based hydrotalcite of an anionic surfactant and a preparation method thereof, pertaining to the filed of titanium-based multi-functional organic-inorganic hybrid functional materials. Lamellar material LDHs containing titanium is taken as a subject while the anions of the surfactant are taken as objects; the LDHs and the anions of the surfactant are synthesized by a double-dropping coprecipitation method to obtain organic-inorganic hybrid material with supermolecule lamellar structure; the chemical formula of the hybrid material is [(M<2+>)1-x(Ti <4+>)x(OH) 2]<2x +>(Surf)<->2x mH2O. The intercalated titanium-based hydrotalcite of the invention has the advantages that the material not only can be used as an adsorbing material to absorb organic pollutants in the environment, but also can be used as an anion exchanger or a catalytic material.

The invention discloses magnetic polystyrene foam. Foam serves as a load matrix, the surface of the foam is loaded with a polystyrene slice layer and Fe3O4 nano-particles covered with hollow oleic acid, interconnected high-hydrophobic materials of a three-dimensional network structure are provided, and the loaded polystyrene slice layer and the loaded super-paramagnetic Fe3O4 nano-particles covered with the hollow oleic acid serve as adsorption and magnetic recovery carriers. The Fe3O4 nano-particles covered with the hollow oleic acid are ultrasonically dispersed in an ethanol solution, the foam is immersed in a uniformly-mixed solution of the Fe3O4 particles covered with the hollow oleic acid to be ultrasonically dispersed, magnetic foam is obtained, the magnetic foam is added and dissolved in a sodium dodecyl benzene sulfonate solution to be ultrasonically homogenized, styrene and divinylbenzene are added under the N2 atmosphere, a polymerization reaction is conducted under the effect of an initiator, namely, 2,2'-azobisisobutyronitrile, and finally the magnetic polystyrene foam is obtained. The cyclic utilization rate of the magnetic polystyrene foam is high, the heat stability of an oil absorption material is enhanced, and the application range of the material is widened.

The invention discloses a method for removing formaldehyde in a newly-decorated room. Formaldehyde remover is placed in the newly-decorated room in a disperse mode, the dosage of the formaldehyde remover is 10-30 grams per square meter, and ventilation of the newly-decorated room needs to be kept. The formaldehyde remover is composed of the following components: by weight, 10-15 parts of attapulgite, 10-15 parts of bentonite, 10-15 parts of sepiolite, 10-15 parts of kiseslguhr, 30-50 parts of zirconium phosphate and 30-50 parts of nanometer titanium dioxide. The method for removing the formaldehyde in the newly-decorated room is simple in operation and good in absorbing effect for the formaldehyde in air.

The invention discloses a preparation method of an environment-friendly indoor poisonous gas adsorbent and belongs to the field of air purification. Nano titanium dioxide and chitosan photocatalytic powder is prepared with a sol titration method, then Chlorophytum comosum essence is obtained through enzymolysis and concentration of Chlorophytum comosum leaves and used for indoor formaldehyde purification, then corn starch and egg white are taken as crosslinking agents, the photocatalytic powder and the Chlorophytum comosum essence are mixed into a paste and loaded in porous and loose half-enzymolysis peanut shells, cracks of the peanut shells are sealed with rice bran wax and dried, and the environment-friendly indoor poisonous gas adsorbent is obtained. Examples prove that the operation is simple and easy, the absorption effect is remarkable, the removal rate is higher than 99%, the treating cost is lower, and harm to a human body and the environment is avoided.

The invention provides a preparation method of a novel ceramic membrane with adsorption and interception functions. Combining modern adsorption technology and membrane technology, attapulgite is used to prepare a new type of ceramic membrane. Mix the attapulgite and deionized water evenly until it becomes a paste, pour it into a mold and press it into a circular ceramic sheet. It is first aged in a constant humidity environment for 3-7 days, taken out and dried in the natural environment of the laboratory for 2-5 days, sent to a muffle furnace for calcination, and after cooling, the surface is smoothed with sandpaper. configuration. The ceramic sheet is immersed in a sulfuric acid solution with a pH value of 2 to 6 for 8 to 24 hours, taken out, washed, soaked in deionized water for 8 to 24 hours, and dried under a dust-removing environment to form a ceramic film. The pore diameter of the ceramic membrane is 10-70nm, and it has adsorption performance and interception function at the same time. In addition to adsorption and retention of organic macromolecules, it also has good adsorption effect on small molecular organic substances and metal ions, and has the value of industrial promotion.

The invention relates to a heavy-metal chromium form separating method, which firstly utilizes dolomite as adsorption materials and is used for separation of Cr (VI) and Cr (III) in the natural water environment. According to indication of a series of tests, adsorption rate of the dolomite (80-100 meshes) in the natural water body to the Cr (III) is larger than 95% and is lower than 5% to the Cr (VI). Adsorbent used in the heavy-metal chromium form separating method is natural minerals, low in cost and convenient to be obtained, and the heavy-metal chromium form separating method is simple, fast and evident in separation effect. Accordingly, the heavy-metal chromium form separating method can be used for separating forms of Cr (III) and Cr (VI) in the water body.

The invention relates to a deodorization composite and products thereof for a refrigerator. The deodorization composite comprises the following components in parts by weight: 5-9 parts of tourmaline and 5-9 parts of hard charcoal. Compared with the prior art, the invention deodorizes the refrigerator and a refrigerated cabinet by means of the synergistic action of the tourmaline and the hard charcoal, the tourmaline has permanent negative charge property, as most odor gases are strong polarity molecules, tourmaline and odor molecules have the property of opposite attract, and simultaneously hard charcoal has strong adsorption function, thereby having excellent adsorption effect.

The invention discloses a method for detecting TVOC in indoor air. The method comprises the following steps: 1) collecting an indoor air sample with a Tenax-TA adsorption tube; 2) introducing inert gas into the Tenax-TA adsorption tube after sampling, carrying out microwave desorption, to obtain desorbed gas; and 3) carrying out gas chromatographic analysis of the desorbed gas, and determining thetotal amount of volatile organic compounds in the air. The detection method can solve the problems of poor thermal desorption effect and low utilization rate of a Tenax-TA tube, the Tenax-TA tube after microwave activating treatment has good adsorption effect on the TVOC in the indoor air, and can accurately measure the TVOC concentration in the indoor environment.

The invention relates to a preparation method of dye-absorption hollow viscose fiber. The preparation method comprises the following steps: (1) preparing a sodium carbonate solution; (2) preparing a dye-absorption hollow fiber spinning solution; (3) spinning and forming fiber; (4) drafting and refining fibers; and (5) performing dye absorption on fibers. The prepared viscose fiber is strong in dye absorption capacity, good in dye absorption effect, green and environment-friendly, and incapable of causing any harm to human bodies, and the produced dye-absorption cloth is used for washing clothes without the need of classification, so that time can be saved, dark and light clothes can be washed together, the manual cost, water and electricity consumption and waste can be greatly reduced, and the scattered pigment can be strongly absorbed so as to prevent clothes from being dyed.

The invention relates to the field of environment friendliness and in particular relates to activated brown coal and a coking wastewater treatment process applying the activated brown coal. Specifically, the activated brown coal is used as an adsorbing material to perform pretreatment on coking wastewater, the treated coking wastewater is fed into an inner circulation anaerobic bioreactor to be treated and then is subjected to conventional anoxia and aerobiotic treatment and advanced treatment, and finally, standard discharging is achieved. Compared with the prior art, for the coking wastewater treatment process disclosed by the invention, the adopted activated brown coal can be recycled, absorbing amount is high, and is far lower in cost is fat lower than that of activated carbon; simultaneously, the inner circulation anaerobic bioreactor is used for treatment instead of a common underground anaerobic organism pool, the treatment efficiency of anaerobic organisms is greatly improved, the load of follow-up treatment processes is reduced, the standard discharging is achieved, and a blank of coking wastewater treatment in the prior art is made up.

The invention provides an environment-friendly heavy metal repairing agent, application thereof and a slow-releasing heavy metal repairing fertilizer and belongs to the technical field of heavy metal pollution soil repairing. The environment-friendly heavy metal repairing agent includes first-level powder, second-level powder, third-level powder and fourth-level powder which are the screened materials respectively sieved with a 200-400 mesh sieve, a 100-150 mesh sieve, a 20-80 mesh sieve and a 10-18 mesh sieve; on the basis of the weight percent, the weight of the first-level powder, the second-level powder, the third-level powder and the fourth-level powder is respectively 15-25%, 10-20%, 55-68% and 5-10% of the total weight of the heavy metal repairing agent; the metal repairing agent is prepared according to the steps of protectively roasting the oyster shell and then grinding; the roasting temperature is at 600-800 DEG C, the roasting time is 8-12min, the flow rate of the oyster shell entering into the roasting device is 0.2-0.4m3 / min and the rotating speed of the roasting device is at 25-35r / min. The environment-friendly heavy metal repairing agent can be used for effectively repairing the soil polluted by cadmium and has high pertinence and excellent absorbing effect.

The invention provides a method for extraction and purification and detection of EV71 RNA (human enterovirus 71 RNA) and a corresponding kit for detection of EV71 RNA. The kit provided by the invention comprises an RNA extraction solution containing magnetic beads and a PCR reaction solution containing an upstream primer EV71-F1 and a downstream primer EV71-R1 used for amplification of target polynucleotide and a probe EV7-P1 used for detection of the target polynucleotide. The kit can detect an EV71 positive sample but can not detect non-EV71 pathogens, which proves the kit has good specificity; furthermore, a paramagnetic particle method with the advantages of a good adsorption effect and easy purification is selected for extraction of RNA in the invention, so high-purity high-yield nucleic acid can be obtained, detection sensitivity, accuracy and stability are greatly improved, the detection limit, i.e., sensitivity, of the kit, is up to 200 copies / ml, and a detecting range (the quantitative linear range of the kit) is 2. 00E + 02 to 2.00E + 08 copies / ml.

The invention discloses a mineral precursor adsorbing agent and a preparation method thereof. A mechanical force grinding means is adopted, raw materials are placed into a grinding machine according to the matching ratios, the ratio of grinding media to materials is controlled to be 7-45, the grinding speed is 100-1200 rpm, the grinding time is 20-240 min, and the mineral precursor adsorbing agent is obtained. The precursor adsorbing agent can be hydrated on the condition of room temperature water phase stirring to obtain the set mineral phase; meanwhile, in the process of converting the precursor structure into the synthetic mineral phase, various organic pollutants and inorganic pollutants in a water solution can be captured and removed, and useful constituents in water can be recycled. Being different from the adsorption effect of common adsorbing agents, the mineral precursor adsorbing agent can greatly improve the removing efficiency for pollutants based on the reaction adsorption phenomenon of the precursor. The related preparation method is simple in technology, free of pollution, environmentally friendly and low in cost. The mineral precursor adsorbing agent can be widely applied in the fields of printing and dyeing, chemical engineering, domestic sewage purification, resource recovery and reuse and the like.

The invention discloses a compound feed mold removal agent for livestock and poultry, and relates to the technical field of agriculture. The compound feed mold removal agent is prepared from, by weight, 5-20 parts of cinnamaldehyde, 5-30 parts of dried tangerine peel, 15-20 parts of modified montmorillonite, 8-15 parts of yeast cell walls, 5-12 parts of kieselguhr, 3-8 parts of propionic acid, 5-10 parts of antibacterial peptide, 2-8 parts of sodium diacetate, 1-5 parts of enterococcus faecalis, 2-6 parts of chitosan, 2-6 parts of dwarf sheareria herb, 2-6 parts of folium artemisiae argyi, 1-5 parts of rheum officinale, 1-5 parts of polyporus umbellatus and 1-3 parts of cortex cinnamomi. The compound feed mold removal agent for the livestock and the poultry is good in adsorption effect and can repair damaged organs, restore the organ function, improve the organism immunity and relieve immunosuppression.

The invention discloses a universal dye wastewater treatment agent. The universal dye wastewater treatment agent comprises, by weight, 15 to 20 parts of chitosan / active carbon, 30 to 40 parts of polyacrylamide, 18 to 26 parts of poly aluminium chloride, 5 to 10 parts of tannin, 25 to 35 parts of kaolin, and 80 to 100 parts of deionized water. According to a preparation method, chitosan / active carbon are added, physical adsorption and chemical adsorption are combined for adsorption treatment of dye wastewater, adsorption effect is obvious, and wastewater removing rate is increased effectively;natural tannin is added, and better removing effect is achieved after combination of natural tannin with wastewater. The raw materials are friendly to the environment, no secondary pollution is causedby treatment, and application prospect is promising.