7results about How to "Increase the reactive surface area" patented technology

The invention discloses a magnesium-based cementitious material and a preparation method thereof, and relates to the field of magnesium-based cementitious materials, and the magnesium-based cementitious material is prepared from the following components: 80-120 parts of magnesium oxide cement, 0.1-0.6 part of a hydrating agent, 0.6-1.2 parts of a carbonation auxiliary agent, 120-180 parts of aggregate, and 50-60 parts of water. The carbonation auxiliary agent comprises one or more of sodium bicarbonate, sesquicarbonate dihydrate and hydromagnesite seeds. The hydrating agent and the carbonating agent cooperate to form a continuous network structure of hydrated magnesium carbonate in the magnesium-based cementing material to fill gaps, and the density and compressive strength of the magnesium-based cementing material are improved while carbon sequestration is performed.

The present invention provides a kind of donkey-hide gelatin peptide for delaying aging and its preparation method and application, belonging to the field of biotechnology. The preparation method of the donkey-hide gelatin peptide for delaying aging of the present invention comprises: mixing the ultrafine grinding of donkey-hide gelatin with a citric acid aqueous solution, treating it for 60min-90min under a boiling water state, adding a composite enzyme enzymolysis, and drying the obtained filtrate after centrifugation and ultrafiltration to obtain the donkey-hide gelatin peptide. Ultrafine grinding increases the reaction surface area of ​​donkey-hide gelatin; the citric acid aqueous solution can break the peptide bond of the donkey-hide gelatin protein molecule and promote the hydrolysis reaction; the boiling water state puts the reaction system in a vibrating state and shortens the reaction time; the composite enzyme enzymolysis accurately controls the degree of enzymolysis to obtain the donkey-hide gelatin peptide for delaying aging. The experimental results show that the donkey-hide gelatin peptide of the present invention has excellent antioxidant properties, can increase the content of SOD, GSH-Px, and CAT in the plasma of D-galactose-induced aging mice, reduce the content of MDA, and play a role in delaying aging.

The invention discloses a preparation method of desulfurized coal ash-based artificial lightweight aggregate, which comprises the following steps: carrying out magnetic separation, grinding and screening on steel slag to obtain steel slag powder, mixing the steel slag powder, desulfurized coal ash, sodium sulfate and water in proportion to form a mixture, adding a proper amount of water into the mixture, and uniformly stirring to obtain the desulfurized coal ash-based artificial lightweight aggregate. The preparation method comprises the following steps: preparing an artificial aggregate blank through a pellet granulation process, putting the blank into an air curing bag, carrying out air curing to obtain a preliminarily formed artificial aggregate, drying the artificial aggregate, and finally carrying out mineralization curing to obtain the desulfurized coal ash-based artificial lightweight aggregate. According to the desulfurized coal ash-based artificial lightweight aggregate and the preparation method thereof, dependence on mineralization reaction raw materials with high cost is effectively reduced, a feasible technology is provided for resource utilization of desulfurized coal ash and steel slag, the strength of a single desulfurized coal ash-based artificial lightweight aggregate prepared by the method is larger than or equal to 2.5 MPa, the water absorption rate is smaller than 20%, and the utilization rate of the desulfurized coal ash-based artificial lightweight aggregate is larger than or equal to 30%. The method is suitable for road engineering and mine filling.

The invention provides a composite seed crystal and a preparation method and application thereof. According to the composite seed crystal prepared by the preparation method provided by the invention, sites can be provided for attachment of sulfate radical precipitation, the reaction activation energy in the crystallization process of the sulfate radical precipitation is effectively reduced, and the reaction surface area is increased; finally, the technical effect of efficiently removing the sulfate radicals in the water body can be achieved, the process cost is reduced, no sludge is generated, no secondary pollution is generated, and the method is suitable for industrial popularization of wastewater treatment.

The application belongs to the technical field of metal recovery, and provides a gold electrolytic recovery method and device based on AI vision, which can transfer the pretreated gold ion-containing electrolytic mother liquor to an electrolytic cell provided with a deposition plate, deposit gold on the deposition area on the surface of the deposition plate, continuously collect images of the deposition area by a camera unit, calculate the dense gold layer coverage rate and deposition defect area ratio of the deposition area by using a detection model, realize dynamic adjustment of the electrolysis parameters, and stop electrolysis and complete the current deposition when the preset completion condition is met. The scheme realizes non-contact real-time quantitative detection of the state of the gold deposition layer during the electrolysis process, can dynamically adjust the electrolysis parameters based on the model detection coverage rate, and preferentially triggers the inhibition operation when the defect area exceeds the standard, ensures that the deposition process is carried out in an excellent state, improves the consistency of the deposition product, reduces the requirements for the experience and concentration of the operator, and reduces human errors.

The utility model discloses a hydrogen purification and recovery device, which relates to the technical field of hydrogen purification and comprises a tank body, a gas inlet pipe fixedly connected to the lower end of the left side of the tank body, a liquid discharge pipe fixedly connected to the bottom of the tank body, a gas valve fixedly mounted on the outer side of the liquid discharge pipe, and an automatic liquid adding device fixedly mounted on the left side of the top of the tank body. A first exhaust pipe is fixedly connected to the upper end of the right side of the tank body, a conveying pipe is fixedly connected to the tail end of the first exhaust pipe, the tail end of the conveying pipe is detachably connected with the drying assembly, a limiting ring is fixedly connected to the inner wall of the upper end of the tank body, and a rotating groove is formed in the surface of the limiting ring in a penetrating mode; and a spraying assembly is arranged in the tank body. The hydrogen purification device has the advantages that the spraying assembly is arranged, so that active ingredients in catalytic liquid can react with hydrogen more effectively, the purification efficiency is improved, the molecular sieve is arranged, it is ensured that moisture in the hydrogen is effectively removed, and meanwhile the hydrogen cannot be lost or other impurities cannot be introduced.

The application discloses a catalytic degradation device for organic pollutants and belongs to the field of organic pollutant treatment. The device comprises a treatment tank and a tank cover installed on the upper portion of the treatment tank. A plurality of partition plates are linearly connected in the tank cover. When the tank cover moves downward, the partition plates contact the bottom wall of the treatment tank, thereby dividing the treatment tank into a plurality of spaces. When the tank cover moves downward, the partition plates contact the bottom wall of the treatment tank, thereby dividing the treatment tank into a plurality of independent reaction chambers. Each reaction chamber can independently perform a catalytic degradation reaction, thereby improving the reaction efficiency and degradation effect. Meanwhile, the linearly connected partition plates can ensure the material transmission and mixing between the reaction chambers, thereby realizing more uniform reaction conditions. When the treatment tank is filled with organic pollutant wastewater to be treated, the tank cover is in an upward moving state. At this time, the partition plates do not contact the bottom wall of the treatment tank, thereby reducing the resistance of the organic pollutant wastewater filling.