7results about How to "Porous structure" patented technology

The invention discloses a high-efficiency liquid organic fertilizer and a preparation method thereof, and belongs to the technical field of organic fertilizer. It is made of the following raw materials in parts by weight: 200-300 parts of livestock and aquaculture wastewater, 50-80 parts of plant straw, 10-20 parts of pretreatment agent, 10-20 parts of EM bacteria, 20-30 parts of composite microbial agent, 3-10 parts of promoter, 1-3 parts of potassium dihydrogen phosphate, and 0.05-0.2 parts of trace elements; the promoter is composed of sunflower disk extract and sodium lauryl alcohol polyether sulfate in a mass ratio of 3:1; the pretreatment agent is a biochar-TiO2 composite material. The present invention realizes the resource utilization of livestock and aquaculture wastewater, converts wastewater into liquid organic fertilizer rich in nutrient elements, provides high-quality fertilizer resources for agricultural production, effectively removes harmful substances in wastewater through the combination of biological treatment and physical and chemical treatment technology, ensures the safety and environmental protection of organic fertilizer, and the obtained organic liquid fertilizer has a significant effect on improving potato yield and quality, and has good application prospects.

The invention discloses a preparation method of a biological selective porous iron-sulfur autotrophic denitrification filler. The preparation method comprises the following steps: respectively grinding pyrite and sulfur in a sampling machine to-74 microns, and then carrying out ball milling; carrying out aerobic biological activation on the ball-milled pyrite powder in a 9K basic culture medium, and then carrying out solid-liquid separation to obtain aerobic activated ore; after a fresh culture medium is replaced, sulfur is added, nitrogen is used for blowing air to conduct anaerobic biological activation, then solid-liquid separation is conducted, and anaerobic activated ore is obtained; and cleaning the surface of the obtained anaerobic activated ore with diluted hydrochloric acid, mixing with sodium bicarbonate and activated carbon, ball-milling, pelletizing and sintering at low temperature to obtain the biological selective porous iron-sulfur autotrophic denitrification filler. According to the preparation method of the biological selective porous iron-sulfur autotrophic denitrification filler, the raw materials are wide in source and low in cost, adsorption growth of iron-sulfur autotrophic microorganisms can be selectively promoted, and the ideal effects of advanced sewage treatment and nitrogen and phosphorus removal can be achieved.

This invention relates to the field of fabric technology, specifically to a breathable antibacterial fabric and its preparation process, and sportswear made from this fabric. The preparation process of the breathable antibacterial fabric includes: preparation of a composite antibacterial agent, preparation of multifunctional polyester fibers, amination modification of phenolic lignin, modification treatment of polyacrylonitrile, and preparation of the breathable antibacterial fabric. The breathable antibacterial fabric of this invention consists of inner, middle, and outer layers: the inner layer is a blend of modal and other materials, which is skin-friendly, moisture-wicking, and antibacterial; the middle layer is a polyurethane film layer; the outer layer contains polyacrylonitrile composite fibers, which are antibacterial, crisp, and breathable. A composite antibacterial agent made of chitosan, cysteine, and copper nitrate imparts dual antibacterial properties to the fabric, reducing bacterial resistance. Ethylene treatment enhances the bonding of components, improving wash resistance and antistatic properties; the co-spinning of amination-modified phenolic lignin and polyacrylonitrile increases fiber strength, breathability, and UV resistance. This fabric is suitable for sportswear.

The present invention belongs to the field of batteries, and specifically relates to a method for preparing a nickel-based MOF-derived carbon-based material, wherein a transition metal salt is dissolved in an organic solvent, and a nickel-based metal MOF is prepared by a solvothermal method; and then a high-temperature carbonization treatment is performed to obtain a nickel-based metal MOF-derived carbon-based material. In addition, the present invention also provides a nickel-based MOF-derived carbon-based material obtained based on the above-mentioned preparation method. In addition, the present invention also provides the application of the nickel-based MOF-derived carbon-based material in magnesium-sulfur batteries. The present invention utilizes the characteristics of the metal MOF material itself and modifies it with citric acid, so that the structure of its MOF is more loose and porous, and a hollow spherical structure can be formed after high-temperature carbonization; the nickel-based metal MOF-derived carbon-based material is used in the preparation of the positive electrode material of the magnesium-sulfur battery, which can effectively inhibit the shuttle effect of magnesium polysulfide and promote the conversion of magnesium polysulfide, thereby effectively improving the cycle stability and discharge specific capacity of the magnesium-sulfur battery.

The present invention discloses a drying and consolidation method for roasting pellets, a system and pellets thereof. Aiming at the phenomenon that the drying efficiency, drying cost and strength of the dried pellets cannot be taken into account at the same time in the hot air drying and microwave drying in the prior art, the present invention innovatively adopts hot air selective pre-drying + microwave electromagnetic field drying and consolidation technology to prepare pellets for low-temperature reduction roasting. The pellets are pre-dried to a low moisture content using hot air drying as a basis, and then the pellets are quickly consolidated to improve the strength by using microwave drying and consolidation as the core. The hot air and microwave are efficiently coupled to achieve green production while the obtained dried and consolidated pellets have high strength. The pellets can be directly put into a kiln for low-temperature reduction roasting without pretreatment such as high-temperature preheating and roasting, which greatly improves the drying and reduction efficiency of the pellets and reduces the production input cost.

The invention belongs to the field of metal powder preparation, and particularly provides molybdenum powder with a high specific surface area, a preparation method of the molybdenum powder and ceramic metallization slurry. The method for preparing the molybdenum powder with the high specific surface area comprises the steps that (1) hot pressing treatment is conducted, specifically, a molybdenum powder raw material with the specific surface area being A1 is placed in a mold, hot pressing treatment is conducted for 5-30 min at the temperature of 900-1100 DEG C, and a hot-pressed blank is obtained; and (2) crushing and powdering are conducted, specifically, the hot-pressed blank is subjected to crushing and powdering treatment, the high-specific-area molybdenum powder with the specific area being A2 is obtained, and A1 is smaller than A2. The preparation method is simple in process, and compared with the adopted molybdenum powder raw material, the specific surface area can be effectively increased.