19 results about "Chelating iron" patented technology

The invention relates to the technical field of environmental catalysis and pollution treatment, in particular to a chelated iron desulfurizer. According to the desulfurizer, DOTA is used as a core chelating agent, an iron active center is accurately anchored to a shell layer of a polymer core-shell structure microsphere through a multi-step polymerization and functionalization process, and the design of solution-state complexing iron is assisted, so that the desulfurizer has both solid-phase localization and solution compensation, the capability of resisting poisoning of impurities such as cyanide and mercaptan is remarkably improved, and iron loss is reduced. The desulfurizer is high in desulfurization efficiency and large in sulfur capacity, can stably operate for a long period, shows excellent continuous activity and selectivity under the conditions of coexistence of various impurities and repeated regeneration, and has a good application prospect.

The application discloses a preparation method of a modified vanadium-iron denitration catalyst and relates to the technical field of catalysis. The application does not need to introduce tungsten-containing and molybdenum-containing raw materials in the whole process. A vanadium source alkaline solution and a citric acid chelated iron-copper chelated solution are prepared, a double-stage mixing in-situ composite process is adopted, the iron-copper chelated solution is added into a premixed material of a carrier and a vanadium source in a buried material type dropping mode, a linkage control system pH is stabilized, a V-Fe-Cu-O ternary solid solution is formed, then phosphorus elements are embedded and a molding aid is added to mix and form a plastic mud material, after aging, extrusion molding and gradient drying, the material is calcined in an oxidative atmosphere in stages, and a stable V-Fe-Cu-P composite solid solution is formed. Through time sequence decoupling and precise process control, the application realizes uniform dispersion of active component molecules at a molecular level, improves the denitration activity, mechanical strength and sulfur deactivation resistance of the catalyst, and the process is simple and suitable for industrial scale production.

The present application relates to the field of environmental catalysis and pollution control technology, and particularly relates to a chelated iron desulfurizer. The desulfurizer takes DOTA as a core chelating agent, and through a multi-step polymerization and functionalization process, the iron active center is precisely anchored in the shell layer of the polymer core-shell structure microsphere, supplemented by the design of solution-state complex iron, which has both solid-phase localization and solution compensation, significantly improving the resistance to cyanide, mercaptan and other impurities poisoning capacity, and reducing iron loss. The desulfurizer has high desulfurization efficiency, large sulfur capacity, and can be stably operated for a long period. Under the conditions of coexistence of various impurities and repeated regeneration, the desulfurizer shows excellent sustained activity and selectivity, and has good application prospect.

The invention relates to the technical field of preparation of organic fertilizers, and particularly discloses preparation and application of a wheat compound foliar fertilizer. The wheat compound foliar fertilizer is prepared from 30 to 40 parts of decomposed livestock and poultry manure, 20 to 30 parts of straw fermentation product, 10 to 14 parts of soybean cake powder, 4 to 8 parts of amino acid, 2 to 6 parts of humic acid, 1 to 5 parts of alginic acid, 1 to 2 parts of EDTA (Ethylene Diamine Tetraacetic Acid) chelated iron, 0.5 to 1 part of amino acid chelated zinc, 0.1 to 0.3 part of sodium selenite, 0.5 to 1 part of boric acid, 1 to 1.4 parts of compound enzyme preparation and 0.3 to 0.8 part of emulsifier. The organic raw materials such as the decomposed livestock and poultry manure, the straw fermentation product and the soybean cake powder are scientifically proportioned with biostimulants such as amino acid, humic acid and alginic acid, and trace elements such as EDTA chelated iron and amino acid chelated zinc, so that the fertilizer is balanced in nutrition and can meet the comprehensive requirements of wheat for various nutrients in different growth stages.

The invention belongs to the technical field of vegetable substrates, and particularly relates to a greenhouse vegetable substrate for plateau regions and a preparation method thereof. The final mixing comprises the following steps: mixing the fermented sheep manure with nutrient soil, and adding a vermiculite mixture and a sodium carboxymethyl cellulose aqueous solution to obtain the vegetable substrate; a preparation method of the nutrient soil comprises the following steps: mixing urea, boric acid, EDTA chelated iron, EDTA chelated zinc, EDTA chelated copper and ammonium molybdate, heating to 38-42 DEG C, spraying a kH550 silane coupling agent solution, stirring at 58-63 DEG C for 1.8-2.2 hours, adding into deionized water, heating to 40-43 DEG C, adding hydroxy propyl cellulose, polyvinylpyrrolidone, Tween 80 and sorbitol, carrying out spray drying, mixing with charcoal and alfalfa meal, and uniformly stirring to obtain the nutrient soil. Nutrient soil is obtained; the prepared vegetable substrate is excellent in water absorption and water retention performance and good in ultraviolet radiation resistance, growth and development of vegetables are effectively promoted, the yield of the vegetables is increased, and the quality of the vegetables is improved.

This invention belongs to the field of plant tissue culture technology, specifically relating to a method for producing natural cellulose from adventitious roots and its application. The induction culture method includes: using industrial hemp leaves as explants, inducing callus formation, differentiating solid adventitious roots, and obtaining adventitious roots through liquid suspension culture; changing the ammonium-nitrate ratio in the 1 / 2 MS medium to 1000 mg / L potassium nitrate and 300 mg / L ammonium nitrate, and increasing the concentration of EDTA-Fe chelated iron, while keeping other substances unchanged; adding 2 mg / L gibberellin on the 14th day of culture, along with EDTA-2Na to eliminate CaSO4 and release sulfate ions, synergistically increasing cellulose content with gibberellin. Finally, transferring to a bioreactor, nitrogen gas is introduced through a nitrogen cylinder (hypoxia stress), employing a hypoxia-reoxygenation cycle, resulting in the optimal growth state of the adventitious roots from the industrial hemp roots, and the highest cellulose content in the resulting adventitious roots.

The invention discloses a composite asparagus nutrient solution for preventing stem blight and a preparation method thereof. The composite asparagus nutrient solution comprises the following raw materials in parts by weight: basic nutrient components: 3-5 parts of potassium nitrate, 2-3 parts of calcium superphosphate and 1.5-2 parts of magnesium sulfate; the trace element component is prepared from the following components in parts by weight: 0.05 to 0.1 part of chelated zinc, 0.01 to 0.15 part of chelated iron, 0.3 to 0.4 part of boric acid, 0.01 to 0.02 part of manganese sulfate, 0.01 to 0.02 part of sodium selenite and 0.01 to 0.02 part of gibberellin; the plant growth regulator is 6-benzylaminopurine or gibberellin or a combination of 6-benzylaminopurine and gibberellin, and the Chinese herbal medicine extract composition is 2-5 parts. The composite asparagus nutrient solution prepared by the invention improves the production speed of asparagus root systems, enhances the resistance of asparagus and reduces the morbidity of asparagus stem blight.

This invention relates to a method and application for repairing cracks in tunnel concrete, belonging to the field of tunnel construction technology. The method includes the following steps: drilling holes into the cracked areas of the tunnel concrete structure to be repaired, serving as grouting and venting channels, and sealing the openings of the cracks on the concrete surface; sequentially injecting a chelated iron solution of concentration x and a hydrogen peroxide solution of concentration 3-5 wt% into the cracks in the tunnel concrete structure; after the reaction, flushing the inside of the cracks and blowing away any accumulated water; and injecting repair grout into the cracks to complete the repair of the tunnel concrete cracks. The chelated iron solution and hydrogen peroxide solution, through the strong oxidizing effect of hydroxyl radicals (•OH), target and degrade organic pollutants such as oil and algae within the cracks. They also produce in-situ micro-etching on the old, smooth concrete surface, significantly improving the interfacial bonding strength.

The invention discloses a soil conditioner suitable for alkaline soil and a preparation method thereof, and belongs to the technical field of soil treatment. The soil conditioner is prepared from the following raw materials in parts by weight: 100 to 200 parts of citrate gypsum, 40 to 80 parts of zinc humic acid, 30 to 60 parts of boric acid, 15 to 35 parts of modified polyaspartic acid calcium salt, 10 to 20 parts of astaxanthin, 10 to 16 parts of a composite nano material, 5 to 10 parts of straw charcoal, 1 to 4 parts of biological sulfur, 0.2 to 0.8 part of an EM (Effective Microorganism) microbial agent and 0.1 to 0.6 part of EDTA (Ethylene Diamine Tetraacetic Acid) chelated iron. According to the invention, the composite nanomaterial and the complex microbial inoculant are introduced into the traditional basic fertilizer, so that the alkaline soil is well improved, and the fertilizer not only can effectively improve the quality of cucumbers, but also can prevent and treat the infection of corynespora cucurbitae.

The application discloses a compound tea-flavored grape wine based on tea and grape juice synergistic fermentation and a preparation method thereof, and belongs to the technical field of food fermentation engineering. The method aims at solving the problem of traditional tea wine flavor fragmentation. The method comprises the following steps: preparing a modified tannase compound and a protein phytic acid mixture, mixing tea and grape juice, and then synergistically fermenting the tea and grape juice, wherein, in the fermentation process, the modified tannase is used to hydrolyze ester-type catechins to reduce bitterness and promote flavor integration; after the fermentation is completed, the protein phytic acid mixture is added to chelate iron ions and adsorb colloidal particles; and finally, the product wine is obtained through multi-stage clarification. Through the above technical scheme, the flavor coordination and physicochemical stability of tea wine are improved, the fusion of tea aroma and fruit aroma is realized, the flavor coordination and wine body stability are improved, no essence or traditional Chinese medicinal materials need to be added, and the product quality and production efficiency are improved.

This invention discloses an oil-soluble iron adsorbent, its synthesis method, and its application. The method involves terminal-amino grouping of a long-chain compound, polybutadiene, to obtain an amino grouped polybutadiene compound. This compound then reacts with carbon disulfide to generate a high-molecular-weight polymer containing dithiocarbamate groups, with the amino grouped polybutadiene compound as the main component. This surface-modified adsorbent, without affecting the original adsorbent performance, introduces a long-chain compound with dithiocarbamate groups, which can complex with oil-soluble iron in lubricating oil to form chelated iron. This chelated iron precipitates from the lubricating oil and accumulates on the adsorbent surface, thereby achieving the purpose of removing oil-soluble iron. Furthermore, surface modification of the adsorbent involves acidification treatment to introduce carboxyl groups onto the adsorbent surface. Simultaneously, the reaction between these surface carboxyl groups and the long-chain compound allows the long-chain compound to exhibit its chemical properties, effectively improving the adsorption rate of the adsorbent for polar aging products.

This invention relates to the field of plant cultivation technology, and more particularly to a soilless cultivation nutrient solution and its application. The nutrient solution comprises calcium salts, potassium salts, chelated iron, magnesium salts, manganese salts, zinc salts, copper salts, molybdenum salts, and borax; based on the molar amount of metal cations, the molar ratio of potassium, calcium, magnesium, iron, manganese, boron, zinc, copper, and molybdenum is (9953–19907):(5998–17343):(3381–4690):(22–59):(25–43):(23–56):(16–24):(1–3):(1–2). Based on in-depth research into the different nutritional requirements of strawberries at different growth stages, this invention yields a nutrient solution suitable for specific growth stages of strawberries. Cultivating strawberries using this nutrient solution composition can effectively improve strawberry yield and quality, and is of great significance in the strawberry production field.

The application belongs to the technical field of vegetable substrates, and particularly relates to a facility vegetable substrate in a plateau area and a preparation method thereof; the final mixture is obtained by mixing fermented sheep manure and nutrient soil, adding a mixture of vermiculite and a sodium carboxymethyl cellulose aqueous solution to obtain the vegetable substrate; the preparation method of the nutrient soil comprises the following steps: mixing urea, boric acid, EDTA chelated iron, EDTA chelated zinc, EDTA chelated copper and ammonium molybdate, heating to 38-42 DEG C, spraying a kH550 silane coupling agent solution, stirring at 58-63 DEG C for 1.8-2.2 h, adding to deionized water, heating to 40-43 DEG C, adding hydroxypropyl cellulose, polyvinylpyrrolidone, Tween 80 and sorbitol, spray drying, mixing with biochar and alfalfa powder to obtain the nutrient soil; the vegetable substrate prepared by the application has excellent water absorption and water retention performance, good ultraviolet radiation resistance, effectively promotes the growth and development of vegetables, and improves the yield and quality of vegetables.

This invention belongs to the field of foliar fertilizer technology, and particularly relates to a fourteen-element compound foliar fertilizer, which is a water-based formulation. It consists of nutrient element components, chelating agent components, synergistic adjuvant components, and deionized water, with each component comprising 100% by mass percentage. The specific formula is as follows: Macroelements and carbon source: urea 3.0-5.0%, potassium dihydrogen phosphate 2.5-4.0%, humic acid 1.5-3.0%; Medium elements: calcium nitrate 1.0-2.0%, magnesium sulfate 0.8-1.5%; Microelements: EDTA chelated iron 0.2-0.5%, EDTA chelated manganese 0.1-0.3%, EDTA chelated zinc 0.1-0.4%, EDTA chelated copper 0.05-0.2%, boric acid 0.3-0.6%, sodium molybdate 0.02-0.08%; Beneficial elements: potassium organosilicon 0.5-1.2%, sodium selenite 0.01-0.05%; Chelating agents: disodium EDTA 0.3-0.8%, citric acid 0.2-0.5%; Synergistic agents: xanthan gum 0.05-0.15%, sodium dodecylbenzenesulfonate 0.1-0.3%, polyethylene glycol 0.2-0.4%; Balance: deionized water.

The invention discloses a special foliar fertilizer for traditional Chinese medicines and a preparation method thereof, and belongs to the technical field of agricultural fertilizers. The preparation method comprises the following steps: adding citric acid into deionized water, uniformly mixing, then adding urea and monopotassium phosphate into a reaction system under continuous stirring at 200-300rpm, stirring until the urea and the monopotassium phosphate are completely dissolved, then sequentially adding modified silica sol, fulvic acid chelated iron and fulvic acid chelated zinc, continuously stirring for 10-15 minutes after each component is added, finally adding tween-80, and keeping stirring for 15-20 minutes, so as to obtain a finished product. The traditional Chinese medicine special leaf fertilizer is obtained. The foliar fertilizer can improve the biomass of traditional Chinese medicinal materials and the yield of medicinal parts, and has an excellent yield increasing effect.

This invention discloses a CS-SA bilayer microcapsule, its preparation method, and its application in encapsulating tuna protein peptides for chelated iron, belonging to the field of pharmaceutical technology. First, using tuna minced meat as raw material, tuna protein peptides for chelated iron are prepared through complex enzymatic hydrolysis and chelation reaction. Then, using sodium alginate as the wall material, single-layer microcapsules are prepared using a sharp-pore-coagulation method. Finally, using chitosan as the outer wall material, CS-SA bilayer microcapsules are prepared through electrostatic layer-by-layer self-assembly. The CS-SA bilayer microcapsules prepared by this invention have a dense structure, uniform particle size, and an encapsulation efficiency of up to 45.0%. They exhibit excellent sustained-release performance in simulated gastrointestinal fluid, with release stability significantly superior to single-layer microcapsules and commercially available iron supplements. This invention realizes the high-value utilization of tuna processing byproducts and provides a new approach for the development of iron supplements.

The invention discloses a leaf fertilizer special for cotton and a preparation method thereof. The leaf fertilizer is prepared from 15-60 parts of microelement A, 20-90 parts of macroelement B, 5-30 parts of synergist C and 110-240 parts of water, the trace element A is prepared from the following components in parts by weight: 5 to 20 parts of EDTA (Ethylene Diamine Tetraacetic Acid) chelated iron, 5 to 15 parts of EDTA chelated zinc and 5 to 20 parts of boric acid; the macroelement B is prepared from the following components in parts by weight: 5 to 20 parts of mineral source potassium fulvate, 5 to 30 parts of urea ammonium nitrate solution, 5 to 20 parts of potassium formate and 5 to 20 parts of potassium tripolyphosphate; the synergist C is prepared from the following components in parts by weight: 5 to 10 parts of polyglutamic acid mother liquor, 5 to 10 parts of alginate oligosaccharide and 5 to 10 parts of dodecylbenzene sulfonate. By compounding mineral source potassium fulvic acid, polyglutamic acid, alginate oligosaccharide and other components, the cotton plant shape can be compact, early budding and early boll bearing can be achieved, the cotton boll expansion speed is increased, and meanwhile the stress resistance is enhanced.

The invention discloses a nutrient solution for preventing tomato phytotoxicity and preparation thereof, and belongs to the technical field of agricultural fertilizers. The nutrient solution for preventing tomato phytotoxicity is prepared from the following raw materials in parts by mass: 10 to 15 parts of urea, 10 to 20 parts of ammonium nitrate, 10 to 15 parts of potassium fulvate, 5 to 10 parts of potassium nitrate, 10 to 15 parts of calcium superphosphate, 25 to 35 parts of arabidopsis thaliana extract, 1 to 5 parts of EDTA (Ethylene Diamine Tetraacetic Acid) manganese chelate, 1 to 5 parts of EDTA iron chelate, 5 to 10 parts of compound amino acid, 5 to 10 parts of magnesium sulfate, 10 to 15 parts of calcium nitrate, 1 to 3 parts of copper sulfate and 200 to 300 parts of water. After the nutrient solution for preventing tomato phytotoxicity is added, the growth state of plants can be adjusted, and the immune resistance of the plants is induced, so that the tolerance of tomatoes to pesticides is enhanced. Moreover, the nutrient solution has the capability of resisting broad-spectrum phytotoxicity, and has a prevention effect on various types of phytotoxicity.