266 results about "Modified zeolite" patented technology

The invention provides a mineralization composition as well as a preparation method and application thereof. The mineralization composition comprises modified celestite, modified strontium-containing dolomite, modified medical stone, modified zeolite, modified tourmaline, modified wollastonite and modified serpentine. The strontium ion dissolution amount of the modified celestite is 50 to 55 mg / L; the strontium ion dissolution amount of the modified strontium-containing dolomite is 15 to 20 mg / L; the metasilicate ion dissolution amount of the modified medical stone is 30 to 35 mg / L; the metasilicate ion dissolution amount of the modified zeolite is 40 to 45 mg / L; the metasilicate ion dissolution amount of the modified tourmaline is 3 to 5 mg / L; the dissolution amount of metasilicate ions in the modified wollastonite is 3 to 5 mg / L; the dissolution amount of metasilicate ions in the modified serpentine is 10 to 15 mg / L. The mineralization composition can stably and enduringly release strontium ions and metasilicate ions, and also can adjust the water quality to alkalescence, so that the water quality reaches the national drinking water standard, and safe and healthy drinking water can be provided for users.

The present application relates to wastewater treatment technical field, specifically to a kind of ammonia nitrogen wastewater treatment method, the composite modified zeolite material in the present application has excellent physical adsorption capacity to ammonia nitrogen by virtue of its unique pore structure and surface properties, ammonia nitrogen molecules in wastewater can be quickly captured, then through the synergistic effect of composite photocatalyst under light and ultrasonic, strong oxidizing free radicals are generated, ammonia nitrogen molecules not completely adsorbed by zeolite material are deeply degraded, through the synergistic effect of adsorption and photocatalysis, the removal efficiency of ammonia nitrogen is significantly improved;After adsorption and photocatalytic treatment, the ammonia nitrogen concentration in wastewater has been greatly reduced, and resin adsorption treatment is used as a subsequent step, which can selectively adsorb residual trace amounts of ammonia nitrogen and other impurities, thereby realizing deep purification of wastewater and ensuring that the effluent quality meets or exceeds relevant discharge standards.

The invention relates to the technical field of building materials, in particular to light water-resistant phosphogypsum-based cement concrete mortar and a preparation process thereof. The phosphogypsum-based cement concrete mortar comprises the following components: activated phosphogypsum, sulphoaluminate cement, magnesium phosphate cement, modified zeolite powder, lightweight aggregate, modified nano silicon dioxide, a core-shell toughening agent, a polycarboxylate superplasticizer and water, and the preparation method comprises the following steps: respectively preparing the activated phosphogypsum, the modified zeolite powder, the modified nano silicon dioxide and the core-shell toughening agent; the water resistance of the ardealite is improved through activating treatment, the interface bonding force and the structural compactness are enhanced through multi-component synergism by means of selective adsorption of the modified zeolite powder, the mechanical property of the lightweight aggregate is optimized, the toughness is improved through the core-shell toughening agent, and lightweight, high water resistance, stable performance and durability improvement of the mortar are achieved; the requirements of complex building scenes are met, and environment-friendly and practical values are achieved.

The invention relates to the technical field of lithium ion battery fire extinguishing agents, and discloses a compound lithium ion battery fire extinguishing agent and a preparation method thereof.The compound lithium ion battery fire extinguishing agent is prepared from, by mass, 30-35 parts of vermiculite, 5-7 parts of fire extinguishing filler, 6-8 parts of modified zeolite, 0.5-1 part of a stabilizer, 1.5-2 parts of a dispersing agent, 1-2 parts of a thickening agent, 1-3 parts of a foaming agent and 40-50 parts of water. The fire extinguishing filler can form a barrier layer on the surface of the battery to prevent oxygen and heat transfer and achieve the fire extinguishing purpose, and starch and polydopamine in the fire extinguishing filler can form compact carbon layers, so that wrapped combustible molecules are distributed among the carbon layers, oxygen is further isolated, and the fire extinguishing efficiency is improved; the modified zeolite can complete fire extinguishing through a physical and chemical synergistic effect, and can form silicon dioxide to be distributed on the surface of the zeolite in the fire extinguishing process, so that the situation that the zeolite is subjected to thermal shock and thermal stress to cause collapse of a zeolite framework and influence the fire extinguishing performance is avoided.

The invention relates to the technical field of concrete, and particularly discloses low-temperature-resistant self-repairing waterproof concrete for water conservancy and a preparation method of the low-temperature-resistant self-repairing waterproof concrete. The water conservancy low-temperature-resistant self-repairing waterproof concrete is specifically prepared from the following components in parts by weight: 70 to 80 parts of cement, 10 to 20 parts of fly ash, 8 to 12 parts of silica fume, 2.5 to 3.5 parts of a reinforcing material, 0.2 to 0.4 part of a crystallization inducer, 1.5 to 2.5 parts of a repairing agent and 20 to 40 parts of water, the reinforcing material is formed by mixing nano silica sol, bentonite, quartz sand and triethanolamine; the crystallization inducer is formed by mixing sodium silicate and aluminum hypophosphite; the repairing agent is obtained by loading calcium ions on an amino silane modified zeolite material and then mixing with a bacillus pasteurii bacterial solution. By utilizing the technical scheme provided by the invention, the prepared concrete has excellent mechanical properties, water resistance, impermeability, freezing resistance, crack resistance and good durability.

The invention discloses an impurity removal device and an impurity removal method for salt separation crystallization mother liquor of chemical high-salt wastewater, and belongs to the technical field of comprehensive utilization of water resources. The impurity removal device comprises a high-density sedimentation tank for receiving high-salinity wastewater salt separation crystallization mother liquor; the first-stage reactor is connected with the high-density sedimentation tank through a pipeline; the second-stage reactor is connected with the first-stage reactor through a pipeline; the three-stage reactor is connected with the filtering device through a pipeline, the filtering device is connected with the mesoporous adsorption tower through a pipeline, the mesoporous adsorption tower is connected with the chelating resin tower through a pipeline, and the chelating resin tower is connected with the modified zeolite adsorption tower through a pipeline. The method has the advantages that equipment configuration is reasonable, and good stability and operability are achieved; the method provided by the invention has outstanding process route originality and low treatment cost, and realizes liquid phase treatment and high-valued cyclic utilization of the chemical high-salinity wastewater salt separation crystallization mother liquor.

The application relates to the technical field of fluorine-containing wastewater treatment, and discloses a MOF modified zeolite fluorine removal agent as well as a preparation method and application thereof, which comprises the following steps: subjecting natural zeolite to carboxylation or calcination pretreatment; preparing a MOF precursor; the MOF precursor is prepared from at least two kinds of rare earth metal ions in La 3+ , Ce 3+ or Zr 4+ and an organic ligand; adding the MOF precursor into a DMF solvent, then adding the pretreated natural zeolite, and ultrasonic treatment for 5-10 min; adding the obtained mixed solution into a high-pressure reaction kettle, and reacting at 160 DEG C for 24 h; after the high-pressure reaction kettle is naturally cooled, the mixed solution in the high-pressure reaction kettle is centrifuged, the precipitate is washed with DMF for 3-5 times, and then dried at 65-90 DEG C for 18-24 h, so that the MOF modified zeolite fluorine removal agent is finally obtained. The disclosed fluorine removal agent has larger pore volume and specific surface area, and has good fluorine removal effect.

The invention discloses a production process of a high-potassium-based compound fertilizer, which comprises the following steps: S1, raw material pretreatment: crushing potassium feldspar to 200 meshes, mixing with 5% sulfuric acid according to a mass ratio of 1: 3, calcining at 120-130 DEG C for 2-3 hours, washing with water until the pH is 6.5-7.0, and drying to obtain potassium feldspar activated powder; s2, putting a potassium citrate solution, a calcium citrate solution, potassium feldspar activated powder, a trace element organic acid salt solution, urea, modified zeolite and a binder into a high-speed mixer in proportion, uniformly stirring, and granulating by adopting a high tower to obtain base material particles; s3, the base material particles are dried, broken particles with the diameter smaller than 2.5 mm are removed, multiple layers of composite films are sprayed to the surfaces of the base material particles for coating, and coated base material particles are obtained after drying; and S4, spraying a bacillus subtilis microbial agent on the surfaces of the coated base material particles, and drying at low temperature to obtain the high-potassium-based compound fertilizer. The high-potassium-based compound fertilizer produced by the invention has the advantages of high nutrient content, long fertilizer efficiency and small environmental pollution, and can improve the soil environment and increase the crop yield.

The invention relates to the technical field of fabrics, in particular to a cool-feeling long cilia strip and a preparation method thereof.The cool-feeling long cilia strip is composed of cool-feeling fibers and a long cilia strip base material and is characterized in that the cool-feeling fibers comprise a core layer, a functional skin layer and an outer thin skin layer; the functional skin layer is prepared from the following components: a sulfonated copolyester matrix, catechol grafted master batch, surface modified zeolite nano powder, an anti-hydrolysis agent and an antioxidant, and the functional skin layer also contains introduced Zn < 2 + > and Mg < 2 + >. Zn < 2 + > and Mg < 2 + > which are stably combined on anchoring points of sulfonated copolyester are subjected to hydration endothermic reaction when being in contact with water, so that a cool feeling is generated; the surface modified zeolite nano powder synergistically enhances moisture absorption and water temporary storage by virtue of the specific surface area, and continuously provides water for an ionized hydration reaction to prolong and amplify a cool feeling effect; the catechol grafting structure endows the fiber with antibacterial performance, and long-term stability of the structure is ensured through an interface enhancement effect. And the outer layer hydrophilic polyester is matched, so that the product has comfort, durability and functionality.

The invention relates to the technical field of petrochemical engineering, in particular to a continuous production method of high-stability N-methyldiisopropanolamine. The method comprises the following steps: heating and reacting methylisopropanolamine and propylene oxide under the action of a specific catalyst to generate an N-methyldiisopropanolamine crude product; then adding the crude product into a rectifying tower, and extracting a high-purity N-methyldiisopropanolamine product from a side line at the middle upper part; the used catalyst is citric acid modified zeolite loaded copper-chromium bimetal. According to the production method disclosed by the invention, by optimizing an active site structure and a rectification separation path of the catalyst, efficient and stable operation of a reaction process is realized, and the thermal stability of a final product is remarkably improved.

The invention belongs to the technical field of waste gas treatment, and particularly relates to a method for preparing a hierarchical pore modified zeolite adsorbent from lithium silicon powder and application of the hierarchical pore modified zeolite adsorbent. The method comprises the following steps: grinding and sieving, pickling and impurity removal, gel crystallization, filtering and washing, and zeolite modification. The lithium silicon powder is used as a main raw material, acid pickling, crystallization, washing and modification are combined, and the obtained hierarchical pore modified zeolite adsorbent has the advantages of being large in specific surface area, high in porosity, high in adsorption rate, high in capacity, good in thermal stability and high in regeneration capacity; the preparation method is simple in process, easy to operate and low in cost, and the prepared hierarchical porous modified zeolite is used for adsorbing VOCs, is high in adsorption efficiency and can be regenerated and recycled, so that the VOCs treatment cost is further reduced.

The invention discloses a multi-element conditioning fertilizer suitable for acid soil and a preparation method thereof, and the multi-element conditioning fertilizer suitable for acid soil comprises the following components by mass: 8-18 parts of diatomite; 20 to 30 parts of calcium humate; 25-35 parts of a silicon calcium magnesium phosphate fertilizer; 10 to 20 parts of chitosan modified humic acid; 5-10 parts of amino acid chelated medium trace elements; 15 to 25 parts of a biochar-based complex microbial inoculant; 3-8 parts of modified zeolite; 3-8 parts of polyglutamic acid; the multi-element conditioning fertilizer suitable for the acid soil contains various innovative components, chitosan modified humic acid improves the stability and adsorption performance of humic acid, amino acid chelated medium trace elements improves the absorption and utilization rate of the medium trace elements, polyglutamic acid enhances the water and fertilizer retention capacity of the fertilizer, and the water and fertilizer retention capacity of the fertilizer is improved. The diatomite and the modified zeolite significantly increase the porosity of the soil and improve the air permeability and drainage of the soil, and the components cooperate with each other, so that the physicochemical properties and biological activity of the acid soil can be comprehensively adjusted.

The invention relates to the technical field of compound fertilizers, in particular to a compound fertilizer for saline-alkali soil and a preparation method thereof, and the compound fertilizer comprises the following raw materials in parts by weight: 35-40 parts of cow dung, 15-20 parts of sodium humate, 7-11 parts of a modified zeolite molecular sieve agent, 4-7 parts of a conditioning agent based on shell powder, 3-5 parts of trace elements and 4-7 parts of an inorganic fertilizer. According to the compound fertilizer for the saline-alkali soil, the cow dung material and the sodium humate are matched with the trace elements and the inorganic fertilizer, meanwhile, the modified zeolite molecular sieve agent and the shell powder-based regulator are added for mutual blending and optimization, and the prepared compound fertilizer can optimize the yield and growth quality of plants when being used in the saline-alkali soil through co-matching and synergistic effects of the raw materials; meanwhile, the physicochemical properties of the soil can be adjusted.

The utility model provides a fluidized bed iron-carbon micro-electrolysis reactor with an enhanced denitrification function, which belongs to the technical field of sewage treatment and comprises a reaction tower body, a water inlet header pipe and an air lifter, the reaction tower body comprises a bearing plate, and a crystal discharge header pipe is arranged at the bottom of the iron-carbon composite fluidized filler and penetrates through the reaction tower body. The iron-carbon micro-electrolysis reactor disclosed by the utility model has the beneficial effects that the iron-carbon composite fluidizing filler arranged in the reaction tower body of the reactor can be in a fluidizing state under the action of lifting water flow of the air lifter, so that the mass transfer exchange rate is improved, and the time required by iron-carbon micro-electrolysis reaction is greatly reduced, thereby reducing the volume and construction cost of the reactor and improving the production efficiency. Meanwhile, the filler particles are always in an irregular motion state in a fluidized state, so that the problem of hardening of the filler particles in the reactor is avoided; the iron-carbon composite fluidized filler comprises sodium chloride modified zeolite filler particles, and the sewage treatment efficiency of the reactor can be greatly improved.

The invention relates to the technical field of wastewater treatment, and discloses an electroplating wastewater sodium ion removal method based on ion exchange resin, which comprises the following steps: step 1, pretreating electroplating wastewater; step 2, flocculent precipitation; 3, plate-frame pressure filtration treatment is adopted; step 4, ion exchange treatment; in the step 4, resin which is subjected to polyethylene glycol grafting treatment and has sulfonic acid groups is used as sodium ion selective ion exchange resin. According to the method for removing the sodium ions in the electroplating wastewater based on the ion exchange resin, the PEG grafted resin with the sulfonic acid group is adopted for treating the electroplating wastewater, so that the sodium ions in the wastewater can be more effectively removed, the removal efficiency of the sodium ions is improved, and the service life of the ion exchange resin is prolonged. In addition, a medicament combination form of the modified zeolite and the PAM flocculant is adopted, and a complexing agent with relatively high price is not needed, so that the medicament cost can be greatly reduced.

The invention provides high-caking low-dust tofu cat litter and a preparation method thereof.The high-caking low-dust tofu cat litter is prepared from, by mass, 40%-60% of bean dreg fiber, 15%-25% of antibacterial high-capacity ammonia adsorption modified zeolite, 8%-15% of a composite binder, 1%-2% of compound vegetable gum, 1%-5% of a hydrophilic coating agent, 0.5%-3% of a food-grade dust suppressant and the balance water. According to the invention, agglomeration is enhanced through composite bonding and zeolite embedding, dust is reduced through a triple dust control process, long-acting deodorization and antibiosis are realized by virtue of modified zeolite, the finished product block mass is free of looseness, low in dust, deodorant and antibacterial, and the process is simple, convenient, easy to industrialize, capable of being naturally degraded and suitable for daily cleaning and nursing scenes of family pet cats.

The application relates to the technical field of lithium ion battery fire extinguishing agents, and discloses a compounded lithium ion battery fire extinguishing agent and a preparation method thereof, which comprises the following raw materials in parts by mass: vermiculite 30-35 parts, fire extinguishing filler 5-7 parts, modified zeolite 6-8 parts, stabilizer 0.5-1 part, dispersant 1.5-2 parts, thickening agent 1-2 parts, foaming agent 1-3 parts and water 40-50 parts. The fire extinguishing filler can form a barrier layer on the surface of the battery, prevents oxygen and heat from being transmitted, achieves the fire extinguishing purpose, and the starch and polydopamine in the fire extinguishing filler can form a dense carbon layer, so that the wrapped combustible molecules are distributed between the carbon layers, oxygen is further isolated, and the fire extinguishing efficiency is improved; the modified zeolite can complete the fire extinguishing through physical and chemical synergistic effects, and the modified zeolite can form silicon dioxide distributed on the surface of the zeolite in the fire extinguishing process, so that the zeolite is prevented from being subjected to heat shock and thermal stress to cause the collapse of the zeolite framework and affect the fire extinguishing performance.

The invention discloses microcapsule self-regeneration-based long-acting formaldehyde-removing cement and a preparation method thereof, and belongs to the field of building materials and environmental functional materials. The material is composed of Portland cement clinker and a functional composite additive, wherein the additive comprises Zn < 2 + > modified zeolite, a manganese-based catalyst, a pH-responsive sustained-release microcapsule and alpha-semi-hydrated gypsum. According to the invention, through the cooperation of zeolite selective adsorption, non-photocatalytic oxidation of the manganese-based catalyst in an alkaline environment and pH-triggered microcapsule self-regeneration, an adsorption-catalysis-regeneration function closed loop is formed, efficient and lasting removal of formaldehyde under a dark condition is realized, and the mechanical properties of a cement matrix are not damaged. According to the preparation method, the functional components are pre-compounded and then co-ground with the cement clinker, the process is simple, and the preparation method is suitable for industrial production.

The application relates to the technical field of catalysts and compound preparation, in particular to a metal-modified zeolite catalyst and a method for catalyzing lactone compounds to generate terminal olefins. ‑ SiO2; wherein the metal M is selected from any one of Ti, Cr, Mn, Co, Ni, Cu, Zn, Zr, Nb, W, Ta and Hf; in the provided metal-modified zeolite catalyst, metal atoms are arranged on the skeleton end points of a zeolite molecular sieve to form a monatomic catalyst; on one hand, the obtained catalyst has Lewis metal sites, can be beneficial to catalyzing lactone compounds to realize decarboxylation, and can ensure that the lactone compounds can be directly catalyzed to generate terminal olefins, and can be widely applied.

This invention discloses an in-situ three-dimensional bioremediation method for slightly polluted water bodies. The method involves collecting a mud-water mixture from the water body to be treated, enriching and culturing it, and collecting the settled sludge. Culture medium II is added to the settled sludge for acclimatization and cultivation to prepare a biological agent. This biological agent is then added to a mixed solution of polyvinyl alcohol-hydrated calcium silicate-fulvic acid (PVA-CSH-FA) or PVA-modified zeolite-FA to prepare an immobilized biological carrier that can slowly release or adsorb calcium ions from the water. Calcium peroxide packing is also prepared to provide oxygen. The immobilized biological carrier packing and calcium peroxide packing are respectively fixed in the upper and lower layers of an ecological sedimentation bed, which is then placed in the slightly polluted water body to achieve in-situ three-dimensional bioremediation. The calcium-precipitating bacterial biological agent obtained through enrichment and acclimatization in this invention, when immobilized and mixed with the carrier material, efficiently and simultaneously removes pollutants such as nitrogen, phosphorus, organic matter, and heavy metals from slightly polluted water bodies.

The application provides a zinc ion modified zeolite and a preparation method and application thereof. 2+ The modification of the zeolite by the zinc ion can balance the negative charge on the zeolite, so that the modified zeolite has reduced electrostatic repulsion to anions and can have more groups capable of combining with phosphates, and thus has the ability to remove phosphates. 2+ In the process of dynamically adsorbing ammonia nitrogen and phosphates in simulated and actual wastewater in a transfer station, the Thomas model is used for fitting. 2+ The adsorption capacity of the modified zeolite to the simulated water reaches 4.49 mg NH3-N / g and 3.04 mg P / g, and the adsorption capacity of the modified zeolite to the actual water reaches 2.35 mg NH3-N / g and 3.63 mg P / g. 2+ The modified zeolite has good adsorption effect on nitrogen and phosphorus in the continuous flow treatment of the actual water.

The invention belongs to the technical field of catalyst preparation, and particularly relates to an ozone catalyst for water treatment and a preparation method thereof, and the preparation method comprises the following steps: uniformly mixing iron-manganese modified zeolite subjected to hot water treatment, TEOS hydrolysate, VTMS hydrolysate, a VSNa solution, divinyl benzene, an initiator, sodium chloride and CMC to obtain slurry, treating the slurry into wet particles, and drying the wet particles to obtain the ozone catalyst for water treatment. Carrying out heating curing treatment on the wet particles to obtain a catalyst precursor, washing the catalyst precursor with deionized water, and then carrying out heat treatment and cooling to obtain the catalyst. The method can effectively reduce the effluent COD of the petrochemical wastewater containing sodium oxalate, and is high in long-term use stability.

The application provides a catalytic denitration agent and a preparation method thereof, and comprises the following components: a reducing base: urea 30-60 parts, ammonium carbamate 10-25 parts, ammonium carbonate 5-15 parts, ammonium bicarbonate 5-15 parts; a phase change catalytic component: ammonium dihydrogen phosphate 2-6 parts, di-ammonium hydrogen phosphate 1-5 parts, molybdate 0.05-0.5 parts, tungstate 0.1-0.8 parts, organic acid metal salt 0.1-0.8 parts, modified zeolite 1-8 parts; a functional additive: dispersant 0.2-1.0 parts, surfactant 0.1-0.6 parts, corrosion inhibitor 0.05-0.2 parts. The application constructs a multi-component complex catalytic system, and the prepared high-molecular catalytic denitration agent can realize the unity of wide-temperature high-efficiency denitration, low corrosion, low ammonia escape and high operation stability while significantly reducing the phase change temperature and energy consumption, and effectively solves the multiple problems of harsh reaction conditions, unstable efficiency and equipment corrosion in the prior art.

The invention relates to a hydrocarbon adsorption material in a cold start stage of a diesel vehicle and a preparation method and application of the hydrocarbon adsorption material in the technical field of environmental catalysis and tail gas purification, the adsorption material comprises an active component and a carrier material, the active component is Ag, the carrier material is ZSM-5 zeolite with an MFI topological structure, and the mass fraction of the active component Ag is 2.0 wt%. The carrier ZSM-5 is loaded with Ag species through a two-step ion exchange method, ammonium salt pretreatment and silver ion exchange are included, and after centrifugation, drying and air atmosphere calcination, the high-performance material for hydrocarbon adsorption in the cold start stage of the diesel vehicle is finally prepared. The prepared adsorption material has the advantages of being high in silver species dispersity, large in low-temperature adsorption capacity and good in matching of a high-temperature desorption window and DOC activation temperature, compared with traditional silver modified zeolite, the adsorption capacity is increased by 125.7% and 79.6% respectively, desorption peaks are concentrated and matched in temperature, the HCs rejection rate in the cold start-up stage is larger than or equal to 90%, and the adsorption material has the remarkable application value and is suitable for popularization and application. And upgrading and optimization of a diesel vehicle tail gas purification technology can be promoted.

The present invention relates to a composite modified zeolite for efficiently solidifying fly ash heavy metals, a preparation method and an application thereof. The composite modified zeolite is a base-phosphate-carbonate composite modified zeolite, and its pH is 7.2-9.1. The surface is loaded with 31%-50% phosphorus and 12%-36% carbon by mass fraction, wherein the phosphorus is loaded in the form of a phosphate group and the carbon is loaded in the form of a carbonate group; the phosphate group includes PO4 3‑ , the carbonate type includes -CO3 2‑ Using this composite modified zeolite as the immobilization and stabilization material, adding 1% of the fly ash mass to the treatment once can reduce the leaching concentrations of lead, cadmium, and zinc in the fly ash to below the limit specified in the "Standard for Pollution Control of Municipal Waste Landfill" (GB 16889-2008). It can be used for the solidification and stabilization of heavy metals in incineration fly ash, especially lead, cadmium, and zinc in the solidified and stabilized fly ash.

The present application relates to the technical field of compound fertilizer, in particular to a kind of compound fertilizer for saline-alkali soil and preparation method thereof, the compound fertilizer includes the following weight parts raw materials: cow dung 35~40 parts, 15~20 parts sodium humate, modified zeolite molecular sieve agent 7~11 parts, 4~7 parts based on shell powder regulator, 3~5 parts trace elements and 4~7 parts inorganic fertilizer.The present application is prepared by the compound fertilizer for saline-alkali soil using cow dung, sodium humate, trace elements and inorganic fertilizer, while adding modified zeolite molecular sieve agent and shell powder-based regulator to optimize each other, through the synergistic effect of raw materials, the compound fertilizer can optimize the yield and growth quality of plant in saline-alkali soil, and can adjust the physicochemical properties of soil.

A process for separating 1-butene from a C4 raffinate gas composition includes introducing the C4 raffinate gas composition to a reactor containing an adsorbent material and passing the C4 raffinate gas composition through the adsorbent material; adsorbing the 1-butene from the C4 raffinate gas composition onto the adsorbent material to separate the 1-butene from the C4 raffinate gas composition and form a residue gas composition; and desorbing the 1-butene by heating the adsorbent material after the adsorbing to form the 1-butene and regenerate the adsorbent material. The adsorbent material is at least one of a zeolite adsorbent and an alkali-modified zeolite adsorbent having at least 99% by weight selective towards 1-butene for adsorption in comparison to iso-butene and iso-butane.

The invention provides mineral thermal spring water as well as a preparation method and application thereof, and relates to the technical field of cosmetics. The preparation method comprises the following steps: pretreating thermal spring water through a multi-medium filter layer to obtain liquid 1; mixing the liquid 1 with modified zeolite at 20-28 DEG C, heating to 40-50 DEG C, and filtering to obtain liquid 2; enabling the liquid 2 to pass through a polyamide composite nanofiltration membrane with the interception amount of 200Da to obtain liquid 3; and sterilizing the liquid 3 to obtain the mineral thermal spring water. Through a specific preparation method, on the premise that other substances are not introduced, the soothing effect and the microcirculation promoting effect of the thermal spring water are remarkably improved, and a basis is provided for wide application of the thermal spring water to the field of cosmetics.

The present invention discloses a microbial remediation method for soil in rare earth heap leaching mines. The method comprises the following steps: mixing a composite microbial agent, distilled water, sucrose, potassium dihydrogen phosphate, magnesium sulfate, and sodium chloride to obtain a mixed solution A; adding modified zeolite to the mixed solution A and stirring to obtain a mixed solution B; adding chitosan to an acetic acid aqueous solution, followed by adding polyvinyl alcohol and stirring to obtain a mixed solution C; mixing Span 80 and liquid paraffin uniformly and heating to 40-50°C; then adding the mixed solution C under stirring; and then sequentially adding the mixed solution B and glutaraldehyde to the mixture and continuing to stir to obtain slow-release microspheres; mixing calcium hydroxide, water, polyethylene glycol, and the slow-release microspheres to obtain a soil conditioner; rinsing the mine soil with water for 1-2 days, turning the soil when the weather is clear, then drying it for 1-2 days and leveling the land, and then spraying the soil conditioner onto the soil. The present invention is suitable for the improvement and remediation of soil in rare earth heap leaching mines and has the characteristics of high applicability and good improvement and remediation effect.

The invention belongs to the technical field of biochemistry, and particularly relates to modified zeolite, immobilized protease and a preparation method and application thereof. Wherein the structural formula of the modified zeolite is shown in figure 1. The immobilized protease prepared based on the modified zeolite has excellent stability, especially immobilized neutral protease, and the enzyme activity is only reduced by about 6% after the immobilized neutral protease is stored for 6 months under normal storage conditions; in addition, after shaking on a shaking table for 2 hours, the enzyme activity is not obviously changed, and the enzyme activity of the lower layer is only reduced by about 2%. And the softness, the part difference, the surface cleanliness and the fluff condition of the leather prepared after being treated by the immobilized protease prepared based on the modified zeolite are superior to those of the conventional enzyme.