12results about How to "Raise the pH" patented technology

This invention discloses a method for the biological drying of sludge, comprising the following steps: baking biomass materials, mixing the resulting baked product with sludge, biochar materials, and a conditioner for biological drying, thereby completing the sludge drying process. In this invention, by biologically drying the mixture of baked product, sludge, biochar materials, and conditioner, not only can the self-generated heat within the system be used to effectively dewater the sludge in a very short time, but the bioavailability of the microbial carbon source can also be improved, effectively reducing the generation of polluting gases. This method can effectively reduce the emission of polluting gases while achieving rapid dewatering. It has advantages such as simple process, low treatment cost, low energy consumption, high drying efficiency, good dewatering effect, low polluting gas production, and low content of toxic and harmful components in the dried product. It can solve the problems of biomass resource waste and pollution, achieve sludge reduction and resource utilization, and has high returns and good application prospects.

The present disclosure relates to a method for detecting vitamin D or a steroid hormone and a blood sample pretreatment kit. The method for detecting vitamin D in blood comprises pretreating a blood sample to obtain a test sample, and detecting the test sample by liquid chromatography tandem mass spectrometry, wherein the pretreatment comprises: adding an internal standard solution and a magnetic bead reagent to the blood sample to obtain a mixed solution and incubating to allow the target analyte to bind to the surface of the magnetic beads; separating the magnetic beads combined with the target analyte; and eluting the target analyte from the surface of the magnetic beads to obtain the test sample, wherein the mixed solution comprises methanol in an amount of 45vol% to 60vol%, or ethanol in an amount of 30vol% to 50vol%. The method can significantly reduce non-specific adsorption of magnetic beads, and improve the accuracy and sensitivity of detection.

This invention provides the application of *Bifidobacterium breve* in the preparation of products for treating gastric ulcers and gastric inflammation caused by *Helicobacter pylori*, belonging to the field of microbial technology. The *Bifidobacterium breve* NKU BB1-2 of this invention, with accession number GDMCC NO: 65956, can antagonize *Helicobacter pylori* colonization and alleviate the aggravation of gastric ulcers caused by *Helicobacter pylori*. In vitro, *Bifidobacterium breve* NKU BB1-2 exhibits good antagonistic ability against *Helicobacter pylori*, significantly inhibiting its colonization and growth. Animal experiments show that *Bifidobacterium breve* NKU BB1-2 can alleviate the aggravation of gastric ulcers caused by *Helicobacter pylori* infection in vivo, manifested as reduced gastric mucosal damage, reduced gastric inflammation, and increased gastric pH. Furthermore, *Bifidobacterium breve* NKU BB1-2 can significantly enhance gastric microbial diversity, regulate and improve the gastric microbial structure, and assist in antagonizing and eradicating *Helicobacter pylori* infection.

This invention relates to the technical field of SCR catalysts, and discloses a method for preparing a honeycomb-type ultra-low temperature SCR catalyst and its application, comprising the following steps: Step 1, pretreating cordierite by immersing it in an acidic solution to obtain pretreated cordierite; Step 2, adding manganese salt, cerium salt, and iron salt to water to prepare a homogeneous mixed solution; Step 3, mixing titanium sol and aluminum sol to prepare a composite sol; Step 4, slowly adding the mixed solution dropwise to the composite sol while stirring, and continuing stirring after the addition is complete to obtain a coating solution; Step 5, immersing the pretreated cordierite in the coating solution, then removing it, blowing away the liquid in the cordierite pores with compressed air, and then drying and calcining; this step can be repeated several times until a honeycomb-type ultra-low temperature SCR catalyst with a suitable loading of active components is obtained. The catalyst of this invention can achieve ultra-low temperature denitrification while avoiding problems such as uneven loading and easy peeling.

This invention discloses a method for the comprehensive utilization of calcium and magnesium solution and CO2, comprising the following steps: S11: using high-salt calcium and magnesium wastewater and CO2 tail gas as raw materials, the high-salt calcium and magnesium wastewater contains CaCl2 and MgCl2, water-soluble amine is added to the high-salt calcium and magnesium wastewater and mixed, and CO2 tail gas is introduced to carry out a mineralization reaction, generating calcium carbonate precipitate, water-soluble amine hydrochloride and magnesium bicarbonate; S12: solid phase calcium carbonate is obtained by solid-liquid separation, oil-soluble amine is added to the separated liquid phase, HCl in the water-soluble amine hydrochloride is extracted, the water-soluble amine is regenerated, and oil-soluble amine hydrochloride and magnesium carbonate trihydrate precipitate are generated; S13: after phase separation, the aqueous phase is separated by solid-liquid separation to obtain liquid phase water-soluble amine and solid phase magnesium carbonate trihydrate, and the oil-soluble amine hydrochloride in the oil phase is pyrolyzed to obtain regenerated oil-soluble amine and HCl gas. This invention utilizes a water / oil dual-phase amine-enhanced calcium-magnesium solution mineralization CO2 and an extraction-pyrolysis synergistic regeneration cycle process to achieve harmless treatment and resource utilization of both calcium-magnesium-containing high-salt wastewater and CO2 tail gas.

This invention discloses a method for restoring the electrolyte in a zinc-bromine flow battery, belonging to the field of flow batteries. After debromination of the zinc-bromine flow battery electrolyte, a carbonate additive is added. This additive is stable in the zinc-bromine battery electrolyte, does not participate in the charge / discharge reaction during battery charging and discharging, regulates the electrolyte pH, and does not introduce new impurities into the electrolyte. After long-term battery operation, to ensure stable battery operation, the electrolyte needs to be debrominated periodically. When the battery is in standby mode, the large amount of elemental zinc deposited at the negative electrode reacts with hydrogen ions in the electrolyte, thereby reducing capacity and affecting the battery's coulombic efficiency. When the electrolyte pH drops significantly, a small amount of additive is added to the solution. The carbonate hydrolysis consumes the hydrogen ions in the electrolyte, thereby increasing the electrolyte pH value, reducing the consumption of elemental zinc at the negative electrode during standby, and improving the battery's standby performance.

The invention provides a recarburization and acid reduction method for strengthening formation of brick red soil mineral binding state organic carbon. The recarburization and acid reduction method comprises the following steps: S1, constructing a functional microbial population; S2, activating and modifying minerals; S3, preparing a multi-layer gradient coating composite preparation; according to the invention, a synergistic construction method of'functional strain selection + specific phage regulation 'is adopted for the first time, and the selected strains are all strains with strong adaptability to the laterite acidic habitat, and can simultaneously realize multiple functions of microbial residual carbon formation, extracellular polymeric colloid synthesis, iron reduction coprecipitation and the like. According to the method, multiple targets of efficient enrichment of mineral binding state organic carbon, especially short-sequence mineral binding state organic carbon, remarkable improvement of soil pH, great increase of corn yield and the like are achieved at the same time, comprehensive benefits are remarkable, and the method is environmentally friendly and high in sustainability.

The application discloses a high-temperature-resistant TPU glue for aircraft packaging and a preparation process thereof, and belongs to the technical field of TPU glue.The phthalic anhydride polyester dihydric alcohol is vacuum dehydrated, cooled, 4,4'-diphenyl methane diisocyanate is added under a nitrogen atmosphere, a catalyst is added, and stirring is conducted to obtain a polyurethane prepolymer; the modified silicon dioxide is added into N,N-dimethylformamide, and ultrasonic treatment is conducted to obtain a modified silicon dioxide solution; the polyurethane prepolymer is taken, the modified silicon dioxide solution is slowly added, and reaction is conducted to obtain a silicon dioxide grafted prepolymer; the 1,4-butanediol is vacuum dehydrated, the silicon dioxide grafted prepolymer is added, stirring is conducted, a flame retardant is added, banburying is conducted, a plate is pressed, and the high-temperature-resistant TPU glue is obtained.Compared with a traditional soft segment, the phthalic anhydride polyester dihydric alcohol is added to introduce a benzene ring rigid structure into the material, the glass transition temperature and the heat distortion temperature of the soft segment are improved, and the mechanical properties and the thermal stability of the material are improved.

This invention relates to the field of soil remediation, and more particularly to a highly efficient remediation agent for acidic soils and its preparation method. The remediation agent consists of hydroxyapatite-modified biochar, MOF biochar composite, and lime. Compared with existing technologies, this invention not only regulates soil acidity but also provides abundant nutrients and improves soil structure. Lime can rapidly neutralize hydrogen ions in acidic soils, quickly increasing soil pH, enabling the remediation agent to improve soil acidity in a short time while achieving both short-term and long-term remediation effects. The raw materials for biochar preparation include agricultural waste such as cow dung, which are widely available and inexpensive, realizing the resource utilization of waste. Lime is also a common soil conditioner, relatively inexpensive and readily available, helping to reduce the overall production cost of the remediation agent and improve its economic feasibility and application scope.

The present application relates to the field of agricultural cultivation technology, and discloses a method for improving the mechanical properties of bamboo by directional nutrient fertilization, aiming at the problem of mechanical property degradation of bamboo caused by nutrient solidification in strongly acidic soil. The method divides fertilization sample plots in the bamboo forest, and applies silicon fertilizer to the rhizosphere soil of the bamboo in the sample plots by using hole-shaped fertilization method. The main component of the silicon fertilizer is sodium silicate, the application amount is controlled to be 180 kg / hm2, and the distribution density of the fertilization hole is 1 hole / m2. The present application improves the local acid-base microenvironment by using a specific dose of sodium silicate, releases the solidification state of phosphorus elements in the soil, and then directionally breeds bacterial communities participating in nitrogen cycle, significantly improves the total nitrogen content and catalase activity of the soil, and finally greatly enhances the grain compressive strength and bending strength of the bamboo stem from the micro-ecological bottom.

This invention provides a method and application for preparing bio-organic fertilizer through synergistic composting of biochar-containing biogas residue, belonging to the field of organic fertilizer preparation technology. The method includes: preparing biogas residue through anaerobic fermentation of livestock and poultry manure and crop straw; adding biochar and a compound microbial agent; conducting high-temperature aerobic composting; and obtaining bio-organic fertilizer through maturation and aging. The amount of biochar added is 5%-10% of the dry basis weight of the composting raw materials; the aerobic composting time is 35-45 days; and the high-temperature composting temperature is 55-65℃. The compound microbial agent includes *Bacillus steatophilus*, *Bacillus amyloliquefaciens*, and *Bacillus mucilaginosus*. The bio-organic fertilizer obtained by this invention can be used for crop soil improvement. This invention, through the synergistic effect of biogas residue, biochar, and compound microbial agent, effectively shortens the composting cycle, improves compost maturity, reduces nitrogen loss, passivates heavy metals, and significantly improves the quality of organic fertilizer.

The invention relates to a metallurgical solid waste-based soil stabilizer and application, and belongs to the technical field of curing treatment. The soil stabilizer comprises the following components in percentage by mass: 38%-55% of steel slag micro powder, 30%-40% of mineral powder, 10%-17% of fly ash and 2%-5% of quick lime, wherein the steel slag micro powder comprises the following chemical components in percentage by mass: 35%-50% of CaO and 10%-20% of SiO2; the specific surface area of the steel slag micro powder is greater than or equal to 400m < 2 > / kg. Solid wastes in the metallurgical industry are effectively utilized by the soil stabilizer, the production cost is reduced, various soil bodies are cured into engineering materials with relatively high strength and good durability, the soil stabilizer is particularly suitable for roadbed filling and stabilizing treatment of heavy metal polluted soil, the finally cured soil body meets the requirements of engineering strength and environmental protection standards, and the soil stabilizer has a wide application prospect. And double benefits of solid waste recycling and soil solidification are realized.