654 results about "Organic phosphorus" patented technology

The invention belongs to the technical field of soil fertilizers, and particularly relates to a soil conditioner and a preparation method thereof. Wherein the soil conditioner is prepared from the following raw materials in parts by weight: 30 to 40 parts of modified charcoal, 20 to 30 parts of microbial complexing agent, 15 to 25 parts of humic acid and 1 to 5 parts of biological enzyme; according to the microbial complexing agent, dopamine grafted and modified nano silicon dioxide and hydroxyapatite form a composite shell, pseudomonas aeruginosa and bacillus subtilis are wrapped, and the microbial complexing agent has the functions of protecting microorganisms, adsorbing heavy metals and slowly releasing phosphorus elements; the modified biochar is compounded with the attapulgite through acid-base treatment to form a porous structure with physical inlaying and chemical functional groups synergistic, so that the adsorption and fixation capability on heavy metals and organic pollutants is remarkably improved; the biological enzyme accelerates organic phosphorus conversion, and enzymatic hydrolysate provides a phosphorus source for microorganisms, promotes microorganism breeding, effectively increases the content of available phosphorus in soil, and enhances the stability of a remediation system.

The invention discloses a copper-based nano-enzyme, a preparation method thereof and application of the copper-based nano-enzyme in organophosphorus pesticide detection, and belongs to the technical field of pesticide residue detection. The copper-based nano-enzyme has a netted-like structure, a high specific surface area and many active sites, the valence state of a copper element is zero-valence Cu, Cu < + > and Cu < 2 + >, the copper-based nano-enzyme has high peroxidase-like activity and laccase-like activity, the detection limit is low, and glyphosate can be sensitively detected; and glyphosate, glufosinate-ammonium and isazofos can be well distinguished from six organophosphorus pesticides with medium concentration, and the method has high selectivity. The nano enzyme provided by the invention is prepared from ammonium citrate and copper nitrate in an N, N-dimethylformamide (DMF) solution by using a solvothermal method; the preparation process of the nano enzyme is simple.

The invention relates to a method for recycling sludge, in particular to a method for enhancing efficient release and recycling of carbon and phosphorus in sludge in a gradient mode. According to the method for stepwise strengthening efficient release and recycling of carbon and phosphorus in sludge, the release efficiency of phosphorus in different occurrence forms in the sludge is improved in a targeted mode, efficient release of inorganic phosphorus and organic phosphorus is achieved through the synergistic effect of multiple steps, meanwhile, efficient release and recycling of carbon are synergistically improved, and the method has the beneficial effects of improving the utilization rate of carbon and phosphorus in sludge and improving the utilization rate of carbon and phosphorus in sludge. The method is used for improving the overall resource recycling efficiency of carbon and phosphorus in the excess sludge and comprises the following steps: 1, pretreating the sludge; 2, pre-treating the green chelating agent to intensify the release of inorganic phosphorus; 3, recovering inorganic phosphorus; 4, resuspending the sludge; 5, strengthening sludge solubilization and hydrolysis by using a peroxidant; 6, anaerobic recycling; 7, recycling carbon and phosphorus resources; the recovery process is simple and convenient, the loss rate is low, the phosphorus recovery rate can reach 80%-99.5%, the acid production efficiency is improved by 14 times or more, and the method has remarkable advantages.

The invention discloses a charcoal nano lanthanum material capable of synchronously removing organic phosphorus and inorganic phosphorus, and belongs to the field of environmental functional materials. The adsorbent comprises biochar and nano lanthanum loaded on the biochar, wherein the biochar is bamboo biochar; the nano lanthanum is in a La (OH) 3 form, the particle size of the nano lanthanum is 1-250nm, and the loading capacity of the nano lanthanum is 3-20wt%; the pore diameter of the biochar nano lanthanum material is 1-30nm, and the specific surface area is 100-250m < 2 > / g. Compared with a biochar-loaded nano lanthanum composite material in the prior art, the composite material has the inorganic phosphorus adsorption performance and also has the organic phosphorus adsorption effect, and inorganic phosphorus and organic phosphorus can be synchronously removed. According to the charcoal nano lanthanum material, organic phosphorus is adsorbed and removed by regulating and controlling the defect form of lanthanum, especially organic phosphonate can be hydrolyzed and removed, meanwhile, large pore channels of bamboo charcoal are beneficial to diffusion of macromolecular organic phosphorus to action sites of lanthanum, and the adsorption and hydrolysis effects of lanthanum on the organic phosphorus are further enhanced.

The invention discloses Burkholderia paradensis and application thereof, and relates to the technical field of microorganisms, the Burkholderia paradensis S3-22L provided by the invention is preserved in China General Microbiological Culture Collection Center (CGMCC), the strain preservation number is GGMCC NO: 31325, the preservation date is July 16, 2024, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, the preservation number is CGMCC NO: 31325, and the preservation number is CGMCC NO: 31325. The 16S rDNA (ribosomal deoxyribonucleic acid) sequence of the Burkholderia paradensis S3-22L is as shown in SEQ ID NO. 1; the strain obtained through screening can dissolve insoluble inorganic phosphorus and mineralize organic phosphorus, can also produce IAA and siderophore and secrete hydrolytic enzymes such as phosphatase, has an inhibition effect on growth and reproduction of ralstonia solanacearum, has an important application effect on prevention and treatment of plant bacterial wilt, and is harmless to the environment and human beings.

The invention provides bacillus pumilus and application thereof, and belongs to the technical field of microorganisms, the bacillus pumilus YM3-12 provided by the invention is preserved in China General Microbiological Culture Collection Center on October 21, 2024, and the preservation number is CGMCC No. 32281; the strain is high in salt and alkali resistance, has the functions of dissolving organic phosphorus, dissolving inorganic phosphorus, dissolving potassium, degrading protein, degrading cellulose, producing iron carriers and the like, can antagonize Erwinia persicae and fusarium oxysporum, has an obvious growth promoting effect on wheat, radishes and cucumbers in a salt and alkali environment, and is very wide in application prospect.

The invention provides a method for degrading organic phosphorus and recycling phosphorus in water in an ozone oxidation system. According to the method, a mode of adding iron or iron salt solution step by step is innovatively adopted, so that the degradation rate of phosphorus-containing organic matters in water, the generation rate of phosphate radicals and the removal of total phosphorus in water are remarkably improved. Besides, the treatment effect is evaluated by monitoring the organophosphorus mineralization rate (taking the generation amount of phosphate radicals as an index) and the removal rate of total phosphorus in water, experiments show that the method can increase the organophosphorus mineralization rate by 30% or above, and the removal rate of total phosphorus reaches 95%. Compared with the conventional one-time addition of iron or iron salt, the method has the advantages that the mineralization rate of organophosphorus and the removal rate of total phosphorus are effectively improved through a step-by-step addition strategy, the direct precipitation of an organophosphorus intermediate product is promoted, the use amount of ozone and the addition amount of iron are remarkably reduced, the reaction time is greatly shortened, and the recovery efficiency of phosphorus resources is further improved. The method is low in cost and suitable for advanced treatment of organic phosphorus-containing wastewater in the industries of pesticides, electroplating and the like.

The invention discloses a Brucella with antibacterial activity and application of the Brucella. The invention discloses Burkholderia sp.HNIV0701, and the preservation number of the Burkholderia sp.HNIV0701 is GDMCC No: 66007. The Burkholderia sp.HNIV0701 disclosed by the invention has a stable, efficient and broad-spectrum antibacterial property, has an inhibition effect on a plurality of plant pathogenic bacteria such as Botryosphaeria dothidea, Phytophthora nicotianae, Fusarium solani, Alternaria alternata, Thanatepora cucurbitae, Ralstonia solanacearum and the like, and also can be used for inhibiting Staphylococcus aureus and / or Listeria monocytogenes, so that the Burkholderia sp.HNIV0701 can be used for inhibiting a plurality of plant pathogenic bacteria such as the Botryosphaeria dothidea, the Phytophthora nicotianae, the Fusarium solanum, the Alternaria solanacearum and the like. The Brucella HNIV0701 can hydrolyze organic phosphorus and can be used for soil improvement. The Brucella HNIV0701 has nitrogen fixation capability and has the potential of promoting plant growth.

The invention discloses a sphingomonas sphingomonas, a bacterial agent thereof and application of the sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas sphingomonas The sphingomonas disclosed by the invention has excellent saline-alkaline tolerance, has the functions of fixing nitrogen, decomposing organic phosphorus and producing ACC deaminase, breaks through the limitation of single function of a traditional strain, and has a very good application prospect in saline-alkaline soil improvement, plant growth promotion and ecological restoration.

The invention relates to the technical field of nano-materials, in particular to a CeO2 nano-enzyme with controllable surface performance as well as a preparation method and application of the CeO2 nano-enzyme. The preparation method comprises the following steps: preparing a CeMOFs precursor by using a solvent-free method; the CeMOFs precursor is subjected to thermal activation treatment, and the CeO2 nano-enzyme with the controllable surface performance is obtained; the invention also provides an application of the CeO2 nano enzyme in the detection of organophosphorus ester compounds. CeMOFs are synthesized through a direct pyrolysis solvent-free method, then CeO2 with high phosphatase sample activity is prepared, and a sensitive colorimetric method is provided for evaluating the degree of organic phosphorus pollution to food and environmental water samples.

The invention discloses a sporosarcina sp. Strain RH34 and an application of the sporosarcina sp. Strain RH34 and the application of the sporosarcina sp. Strain RH34. The sporosarcina strain RH34 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation address is No.3, yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation date is December 25, 2024, and the preservation number is CGMCC NO.33199. The sporosarcina strain RH34 can be used for preparing the sporosarcina strain RH34. The alfalfa rhizosphere microorganism sporosarcina strain RH34 is separated from alfalfa roots in salinized soil, and has the functions of dissolving organic phosphorus, dissolving inorganic phosphorus, producing biological membranes, producing siderophores, producing IAA and producing ACC deaminase. Seed soaking and germination under salt stress can obviously improve the germination index of alfalfa seeds. The growth condition of alfalfa seedlings can be improved under salt stress.

The invention provides an organophosphorus mineralization composite flora with wide pH (potential of hydrogen) adaptability and application of the organophosphorus mineralization composite flora. The organophosphorus mineralization composite flora comprises subterranean bacillus subterraneus, stenotrophomonas sp and Cupriavidus sp. The organophosphorus mineralization composite flora has the advantages that the organophosphorus mineralization composite flora has wide pH adaptability, and the organophosphorus mineralization composite flora comprises the subterranean bacillus subterraneus, the stenotrophomonas sp. And the Cupriavidus sp. The organophosphorus mineralization composite flora provided by the invention can be widely used in acid-base environments; wherein the capacity of the phosphatase secreted by the three bacteria is not interfered by the external phosphorus concentration, and the phosphatase is constitutive phosphatase, so that a large amount of phosphatase can be secreted no matter which phosphorus concentration is high or low. The organophosphorus mineralization composite flora remarkably promotes mineralization of organophosphorus and release of phosphorus in the organic fertilizer, improves the nutrient efficiency of the organic fertilizer, and can play a role in mineralizing organophosphorus in both acid soil and alkaline soil.

The invention relates to paenibacillus polymyxa capable of preventing diseases, resisting stress and promoting growth and application of the paenibacillus polymyxa, and belongs to the technical field of microorganisms, the paenibacillus polymyxa SS44 has the characteristics of degrading protein, degrading fat, degrading cellulose, dissolving potassium, fixing nitrogen, dissolving organic phosphorus, dissolving inorganic phosphorus and producing exopolysaccharide. The strain is capable of antagonizing pathogenic bacteria fusarium oxysporum and fusarium fusiforme which can cause potato fusarium wilt, sweet potato root rot, soybean root rot, alfalfa root rot and the like, can improve sandy soil, can generate a good growth promoting effect on wheat, soybean and corn in saline-alkali soil and sandy barren soil environments, and is very wide in application prospect.

The invention relates to the technical field of environmental microorganisms, in particular to arthrobacterium Arth.R8 and application thereof, and the preservation number of the arthrobacterium Arth.R8 is GDMCC No.63567. The arthrobacter Arth.R8 has the effects of fixing nitrogen, dissolving organic phosphorus, promoting growth and promoting nodulation. The arthrobacter Arth.R8 disclosed by the invention can be used for promoting absorption and utilization of nutrient substances such as nitrogen and phosphorus in a plant growth process, inhibiting growth of fusarium graminearum and promoting plant growth, and a new microbial strain resource is provided for realizing reduction and synergism of chemical fertilizers in agricultural production.

The invention relates to the field of packaging materials, and particularly discloses a degradable environment-friendly electric insulation plastic packaging bag and a preparation method thereof. The degradable environment-friendly electric insulation plastic packaging bag is prepared from the following raw materials in parts by weight: 100 parts of polylactic acid, 1-4 parts of organic zirconium phosphate, 2-5 parts of hydrophobic modified cellulose nanocrystals, 4-10 parts of polyimide / aluminum fluoride composite nanofibers, 1-3 parts of a dispersing agent, 1-4 parts of an antioxidant, 3-5 parts of inorganic filler, 1-3 parts of a slipping agent, 1-3 parts of an antistatic agent and 3-5 parts of a flame retardant. The packaging bag can be used for objects with high requirements for electrical insulation, has high electrical insulation capacity at high temperature, and is high in transparency and mechanical property.

The invention discloses a Burkholderia sp D8 strain and application thereof, the Burkholderia sp D8 strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation date is November 15, 2024, and the preservation number is CGMCC NO: 32674. The Burkholderia sp D8 strain has the advantages that the Burkholderia sp D8 strain can be used for preparing the Burkholderia sp D8 strain, and the Burkholderia sp D8 strain can be used for preparing the Burkholderia sp D8 strain; the Burkholderia sp D8 disclosed by the invention is convenient to culture and high in growth speed; the capacity of rapidly and efficiently fixing nitrogen and dissolving inorganic phosphorus and organic phosphorus is achieved; the function of rapidly and efficiently generating protease and siderophore is realized; the salt-tolerant range is wide, and the adaptability is high; the compound can be used as a soil remediation agent, and can effectively improve the contents of organic matters, total nitrogen, alkali-hydrolyzable nitrogen, total phosphorus, available phosphorus and the like in soil.

The invention relates to the technical field of ecological agriculture, and discloses a phytase fungicide fertilizer as well as a production method and application thereof. 1-10 parts of a phytase high expression strain; 1-8 parts of a phytase solution; 1.7 to 9 parts of an embedding material; 3-8 parts of pH buffer particles; 10-30 parts of a micro-carbon carrier; 0.02 to 0.10 part of an indoleacetic acid microcapsule; and 30-60 parts of humus powder. The invention further provides a production method of the phytase fungicide fertilizer. The method comprises the following steps: S1, performing liquid fermentation on a phytase high-expression strain; s2, mixing the thalli with an enzyme solution; s3, adding pH buffer particles into the embedded particles; s4, drying the granules in a spray drying manner; and S5, mixing the dried product with humus powder, and granulating. By constructing a microbial inoculum system containing a phytase high-expression strain, efficient activation and conversion of organic phosphorus resources are realized, and the release efficiency of the fertilizer to phosphorus resources is improved.

The invention relates to the technical field of cables, and discloses a flame-resistant polyethylene wire and cable and a production method thereof.The wire and cable comprises a metal conductor and a polyethylene cable material wrapping the outer side of the metal conductor, and the polyethylene cable material takes high-density polyethylene and low-density polyethylene as main raw materials; according to the preparation method, a polyethylene matrix is used as a main material, an organic-inorganic composite flame retardant and other additives are used as auxiliary materials, mixing and extrusion processes are performed, the prepared organic-inorganic composite flame retardant is palygorskite of which the surface is coated with a phosphorus-containing polymeric macromolecular substance, and the organic phosphorus-containing polymeric macromolecular substance can form a'transition 'connection structure between the palygorskite and the polyethylene matrix; the transition structure can greatly improve the compatibility between the palygorskite and a polyethylene matrix, so that a mutual uniform dispersion effect can be generated between the palygorskite and the polyethylene matrix, and further the reinforcing effect of the organic-inorganic composite flame retardant can be utilized to improve the mechanical strength and flame resistance of the polyethylene.

The invention discloses bacillus for preventing and treating anthracnose of camellia oleifera and application of the bacillus. The preservation number of the bacillus CH-1-7 provided by the invention is GDMCC (Glucose Digital Microorganism Center) No. 66219; the bacillus amyloliquefaciens has the capability of generating living-promoting substances, can generate organic phosphorus and siderophores, has the nitrogen fixation capability, can inhibit the growth of various pathogenic bacteria, especially colletotrichum gloeosporioides, can be used for preventing and treating camellia oleifera anthracnose, and has important application value in the field of plant protection.

The utility model provides an organophosphorus-containing wastewater treatment system. The organophosphorus-containing wastewater treatment system comprises an adjusting tank, an oxidation unit, a physicochemical treatment unit and a biological reaction unit which are connected in sequence, wherein the adjusting tank is provided with an acid-base medicament feeding port; the oxidation unit is provided with an oxidant feeding port; the physicochemical treatment unit comprises a coagulation zone, a flocculation zone and a sedimentation zone which are connected in sequence; the coagulation area is provided with a coagulant feeding port, the flocculation area is provided with a flocculant feeding port, the bottom surface of the coagulation area is communicated with the bottom surface of the flocculation area through a pipeline, and the bottom surface of the coagulation area is higher than the bottom surface of the flocculation area; a biochar layer is arranged in the biological reaction unit and is suitable for degrading organic phosphorus-containing wastewater. The organophosphorus-containing wastewater treatment system disclosed by the utility model can realize efficient treatment of the organophosphorus-containing wastewater.

The invention provides an organic phosphoric acid molecule modified tungsten oxide ammonia gas sensor as well as a preparation method and application thereof, and belongs to the field of nanostructure materials and ammonia gas detection. According to the invention, the catalytic decomposition capability of organic phosphoric acid molecules on ammonia gas is utilized, so that the adsorption and catalytic oxidation of ammonia gas molecules on the surface of tungsten trioxide are promoted, and the sensitivity and selectivity of tungsten trioxide on ammonia gas are enhanced; on the other hand, phosphorus-oxygen groups in organic phosphoric acid molecules can be bonded with Lewis reaction active sites (uncoordinated W < 6 + >) on the surface of tungsten trioxide in a covalent form, so that the surface activity of tungsten trioxide is protected, and the service life of the sensor is prolonged. The result of the embodiment shows that the sensitivity of the prepared organic phosphoric acid molecule modified tungsten oxide ammonia gas sensor to ammonia gas is remarkably improved, the organic phosphoric acid molecule modified tungsten oxide ammonia gas sensor has good selectivity to ammonia gas, the performance is not obviously attenuated after 5-month test, and the service life is long.

The invention discloses a red phosphorus-based halogen-free flame retardant and a preparation method and application thereof, and belongs to the technical field of halogen-free flame retardants. Red phosphorus serves as a matrix of the red phosphorus-based halogen-free flame retardant, coating is conducted twice in the preparation process, the mechanical performance of red phosphorus-based halogen-free flame retardant particles is improved through first-time coating, and the mechanical performance of the red phosphorus-based halogen-free flame retardant particles is improved through second-time coating; the pre-coated red phosphorus microspheres are more regular in morphology and more rough in surface, the coating effect of subsequent secondary coating of a polymer is improved, the outer layer of the red phosphorus-based halogen-free flame retardant particles is polystyrene, the compatibility with other polymer matrixes is improved, and the using effect of the red phosphorus-based halogen-free flame retardant particles is improved. Flame-retardant modified polyvinyl alcohol in the secondary coating process contains an organic phosphorus flame retardant, so that the content of available phosphorus in the red phosphorus-based halogen-free flame retardant is increased, a reactive organic phosphorus flame retardant is grafted with polyvinyl alcohol, migration of the reactive organic phosphorus flame retardant is avoided, hydroxyl in polyvinyl alcohol can be reduced, and the flame-retardant property of the red phosphorus-based halogen-free flame retardant is improved. The red phosphorus-based halogen-free flame retardant is prevented from being damped and losing efficacy, and the flame-retardant effect is

To provide an acidic disinfectant composition and a cleaning sheet that give no influence to a material of a disinfected surface, cause no reduction of active ingredients, and have excellent disinfecting efficacy.SOLUTION: The present invention provides an acidic disinfectant composition that contains: persulfuric acid or a persulfate salt as a component (A); an acid agent including at least one selected from the group consisting of inorganic acid, organic sulfonic acid, and organic phosphonic acid as a component (B); a surfactant as a component (C); and water as a component (D), as well as a cleaning sheet comprising a base material sheet impregnated with the acidic disinfectant composition.SELECTED DRAWING: None

The invention discloses a plant-microorganism enhanced multiphase extraction organic pollution remediation method. The method comprises the steps of site evaluation, phytoremediation system construction, microbial remediation system construction, multiphase extraction enhancement, remediation process monitoring and adjustment, pollutant removal and ecological restoration. According to the method, a plant-microorganism enhanced multiphase extraction synergistic effect remediation system is constructed, the problem that the efficiency of a single plant remediation or microorganism remediation technology is low is effectively solved, degradation and removal of organic pollutants are accelerated, efficient treatment of refractory pollutants such as polycyclic aromatic hydrocarbons, polychlorinated biphenyls and organophosphorus pesticides is achieved, and the method has the advantages of being simple in process, low in cost and good in application prospect. In the remediation process, the influence on the ecological environment is small, secondary pollution is not likely to be generated, and the method has both economical efficiency and environmental friendliness and is suitable for treatment of multiphase pollutants in complex contaminated sites including soil, water and solid waste.

The invention relates to the technical field of PU synthetic leather, and discloses flame-retardant PU synthetic leather, which comprises a base layer, a flame-retardant middle layer and a surface functional layer, the flame-retardant middle layer is prepared by mixing modified PU resin, a composite flame retardant, a synergist and a cross-linking agent, the composite flame retardant is prepared by compounding an organic phosphorus-nitrogen flame retardant and nano magnesium hydroxide according to a mass ratio of 3: 1-5: 1, and the surface functional layer is prepared by mixing modified PU resin, a composite flame retardant, a synergist and a cross-linking agent. The synergist is modified montmorillonite, the surface functional layer is a blend of fluorine-containing polyurethane resin and flame-retardant silicone oil, and the three-layer structure is integrally formed through a hot melting compounding process. The modified PU resin is prepared from polycarbonate diol, isophorone diisocyanate and a chain extender through a reaction. Three-dimensional flame-retardant protection from inside to outside can be achieved through the collaborative design of the base layer flame-retardant pretreatment layer, the flame-retardant middle layer and the surface functional layer, a finished product can reach a high flame-retardant grade, combustion spreading is effectively inhibited, release of smoke and toxic gas is reduced, and the problems that traditional PU synthetic leather is poor in flame retardance and prone to melting and dripping are solved.

The invention relates to the technical field of cables, in particular to an aluminum alloy cable which is composed of an aluminum alloy conductor, an inner insulating layer, a fireproof wrapping tape layer and an outer sheath. The outer sheath is prepared from the following raw materials in parts by weight: 50 to 60 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of linear low density polyethylene, 10 to 20 parts of polyolefin elastomer, 5 to 10 parts of PPO-g-MAH, 20 to 30 parts of carbon black, 1 to 10 parts of organic phosphorus flame retardant, 20 to 30 parts of crusting agent and 1 to 3 parts of antioxidant; the aluminum alloy cable provided by the invention is light in weight, high in strength and excellent in fireproof and flame-retardant performance.

The invention discloses an imidazole derivative-organic phosphoric acid combined extracting agent and an application method thereof, and belongs to the technical field of hydrometallurgy. The molar ratio of the imidazole derivative to the organic phosphoric acid is (10: 1)-(1: 10). The combined extraction agent can be used for extracting nickel, cobalt and manganese from a solution containing one or more nickel, cobalt and manganese. The selectivity of the solvent extraction system to nickel, cobalt and manganese is far higher than that of impurity metal ions such as calcium, magnesium, lithium, sodium and potassium, the extraction system is good in stability, free of emulsification phenomenon and third phase generation, easy to operate, low in cost and environmentally friendly. In lithium battery recovery and other systems containing coexistence of nickel, cobalt, manganese and calcium, magnesium and lithium, the solvent extraction system is particularly good in selectivity, and efficient co-extraction of nickel, cobalt and manganese can be achieved. When a mixed solution and a weak acid solution are treated, purification and concentration of target metal can be synchronously achieved, the recovery period is greatly shortened, the recovery rate is increased, and the method has great significance in efficient utilization of nickel-cobalt-manganese resources.

The present invention belongs to the technical field of anti-corrosion coatings, and discloses an organophosphorus-modified epoxy acrylic resin composite coating and a preparation method thereof. The present invention adopts a phosphorus oxide containing a benzene ring as a reactive group, and realizes the modification of acrylate by grafting an acrylate monomer through the ortho-C-H bond on the activated benzene ring. At the same time, the selected phosphorus oxide can also be connected with layered vermiculite and boron nitride through a covalent bond, which is beneficial to improve the dispersibility of inorganic fillers in the coating, avoid the occurrence of local agglomeration, and strengthen the compactness of the epoxy acrylic resin composite coating. In addition, the introduced organophosphorus compound can also undergo a strong chelating effect with the substrate, and form a stable metal salt passivation film through covalent bond and metal complexation to prevent the erosion of the medium, thereby further improving the salt resistance of the substrate. The modified water-based acrylic resin composite coating prepared by the present invention is green and environmentally friendly, has excellent salt spray resistance and chemical corrosion resistance, and can be widely used in the field of metal corrosion protection.

The invention relates to a streptomyces sp. Strain EC15 and an application of the streptomyces sp. Strain EC15. The streptomyces strain EC15 is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation address is No.3, yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation date is December 25, 2024, and the preservation number is CGMCC NO.33195. The streptomyces strain EC15 has the advantages that the streptomyces strain EC15 can be used for preparing the streptomyces strain EC15; the strain has the functions of dissolving organic phosphorus, dissolving inorganic phosphorus, producing a biological membrane, producing an iron carrier, producing IAA and producing ACC deaminase. The EC15 bacterial liquid is used for soaking seeds under the stress of 200 mmol / L and 250 mmol / L NaCl, so that the germination potential, the germination rate, the germination index, the radicle length, the germ length and the fresh weight of group seedlings of the alfalfa seeds can be obviously improved. After the EC15 strain is inoculated, under the stress of 200 mmol / L NaCl, the plant height, stem diameter, leaf area and overground part fresh and dry weight of alfalfa plants can be obviously improved.

The invention relates to the technical field of wastewater treatment and resource recovery, and discloses an organophosphorus degradation and recovery system based on double-cathode electro-Fenton reaction, comprising: an electrolytic tank for accommodating organophosphorus wastewater to be treated; the anode is arranged in the electrolytic tank and is electrically connected with an anode of a power supply; the oxidizing agent generating cathode is arranged in the electrolytic tank and is used for generating hydrogen peroxide in situ under a power-on condition; the metal reduction cathode is arranged in the electrolytic tank and is used for adsorbing and reducing ferric ions; the metal source is composed of zero-valent iron or iron alloy, is not directly and electrically connected with the power source, and is arranged in an electric field acting area established by the anode and the at least one cathode. Through the design of inductive slow-release iron supply and double-cathode collaborative circulation, a series of problems of uncontrollable iron ion release, high iron sludge yield, low catalyst utilization efficiency, difficulty in resource recovery and the like in the traditional electro-Fenton technology are effectively solved.