90 results about "Bicarbonate Ion" patented technology

The invention discloses a bimetallic-based catalyst for promoting CO2 absorption-desorption cycle of an alcohol amine solution as well as a preparation method and application of the bimetallic-based catalyst, an MCM-41 molecular sieve with a high specific surface area and an ordered mesoporous structure is taken as a carrier, Zr (SO4) 2 and copper acetylacetonate are loaded as bimetallic active components, the catalyst has a proper acid site and good surface acidity, and the catalyst can be applied to CO2 absorption-desorption cycle of an alcohol amine solution. The decomposition of bicarbonate ions is accelerated, the fracture bond energy of C-N is reduced, the carbon dioxide desorption performance of MEA and a water-poor system is enhanced, and the energy consumption is reduced. Compared with the prior art, the molecular sieve catalyst is synthesized by adopting a one-step hydrothermal method, and the process is simple; the catalyst is not only suitable for a traditional MEA aqueous solution, but also effective in a novel water-poor amine liquid system, and provides an energy-saving solution for different carbon capture processes. After the catalyst is subjected to five times of absorption-desorption cycles, the catalytic activity of the catalyst can still be kept at 90% or above of an initial value, and good cycle stability is shown.

The invention discloses a method for promoting a cobalt sulfide loaded carbon composite catalyst to activate PMS to degrade pollutants by using bicarbonate ions. According to the method, bicarbonate radical ions are added into a system for degrading organic pollutants by activating the PMS with the cobalt sulfide loaded carbon composite catalyst, so that the efficiency of removing phenol by activating the PMS with the cobalt sulfide loaded carbon composite catalyst is greatly improved, and cobalt ion leaching is reduced due to addition of the bicarbonate radical ions; the cobalt sulfide loaded carbon composite catalyst has a wide application prospect in the field of advanced oxidation treatment of organic wastewater.

A carbon sequestration mineral admixture, and a preparation method and device therefor. The method for preparing the carbon sequestration mineral admixture comprises: providing crushed solid waste; providing an activating liquid and a catalytic liquid, one or both of which is optionally in the form of micro-droplets; and contacting and reacting the activating liquid, the catalytic liquid, flue gas containing carbon dioxide, and the crushed solid waste to obtain a carbon sequestration mineral admixture, the contacting optionally being carried out under the action of an external mechanical force, wherein the activating liquid comprises one or more of a magnesium salt, an ammonium salt, an organic amine and a lower alkanol serving as an activating agent, and the catalytic liquid comprises carbonate ions and / or bicarbonate ions serving as a catalyst. The accelerated carbonization method has the advantages of a high carbonization efficiency, simple operation, and also being capable of achieving a high degree of carbonization and significantly increasing the added value of a carbonization product.

The invention provides a method for degrading organic pollutants by catalyzing peracetic acid with trace cobalt based on bicarbonate radical coordination reinforcement, and belongs to the technical field of organic pollutant wastewater treatment. The method comprises the following steps: sequentially adding a cobalt salt, a ligand and peracetic acid into the organic wastewater, and reacting to complete degradation of organic pollutants, the ligand is a soluble inorganic salt carrying bicarbonate radicals. A novel peracetic acid activation method is constructed, a special cobalt complex structure is formed by introducing a synergistic effect mechanism of trace cobalt ions and bicarbonate ions, Co (III) / Co (II) valence cycle is effectively promoted, the generation amount of organic free radicals and high-valence cobalt active substances is increased, and the degradation efficiency of organic pollutants is remarkably improved. The method provided by the invention has the advantages of small addition amount of cobalt ions, strong degradation capability and the like, is strong in environmental interference resistance, and is suitable for a weak acid environment.

The invention discloses a method for in-situ leaching mining of sandstone uranium ore, the concentration of bicarbonate radical ions in ore bed water in the sandstone uranium ore is lower than 0.5 g / L, the sandstone uranium ore comprises yttrium-containing uranium ore, and the carbonate content is 1.5%-2.5%; the ore bed water serves as a solvent, 500 mL of leaching agents with different pH values adjusted through sulfuric acid are prepared, and the concentration of hydrogen peroxide in the leaching agents is 2 g / L; and determining the maximum pH value when the uranium ore in the slice sample is corroded by using the leaching agents with different pH values, and taking the maximum pH value as a critical pH value. The leaching agent with the critical pH value is used for exploiting the sandstone uranium ore, corrosion to gangue minerals in the leaching process can be reduced, the number of formed colloids and CaSO4 precipitates is reduced, the precipitates are prevented from blocking an ore bed, in addition, the method can be used for target corrosion of the refractory uranium ore, and therefore efficient leaching is achieved.

The invention belongs to the technical field of deep-time atmosphere carbon dioxide isotope composition estimation, and particularly relates to a high-resolution deep-time atmosphere carbon dioxide isotope composition estimation method and system, and the method comprises the steps: S100, reconstructing the global surface average temperature based on the atmosphere carbon dioxide concentration pCO2; s200, calculating the relative content of carbonate ions and bicarbonate radical ions in the marine carbonate system; s300, determining a fractionation coefficient; s400, determining a difference value V of carbon isotopes of the carbonatite and surrounding seawater in the carbonatite deposition process on the basis of the carbon isotope difference of the carpopods and the carbonatite; according to the method, carbonate rocks which generally exist in geological history and are continuously deposited on time are selected as a tool for atmospheric carbon dioxide isotope reconstruction, and the atmospheric carbon dioxide isotope is reconstructed through quantitative evaluation of the geological history ocean surface layer temperature, the ocean carbonate rock salt content and the fractionation effect during formation of the carbonate rocks. And the atmospheric carbon dioxide isotope composition in the deep-time geological historical evolution process can be accurately calculated.

The objective is to provide a method for dissolving solids that is excellent at dissolving solids generated in nuclear facilities. [Solution] A method for dissolving a solid generated at a nuclear facility, comprising dissolving the solid in a solution containing at least one of carbonate ions and bicarbonate ions, and at least one of potassium ions and cesium ions.

The application discloses a preparation method of a cement-based material surface calcium carbonate crystalline layer, and comprises the following steps: step one, mixing cement and water, pouring into a mold for curing, demolding and curing to obtain a cement test block which is not completely hydrated; step two, adding sodium chloride, sodium sulfate, potassium chloride and sodium bicarbonate into deionized water to prepare an inorganic ion solution, and the concentration of sodium bicarbonate is greater than or equal to 0.20 g / kg; step three, soaking the cement test block which is not completely hydrated obtained in step one into the inorganic ion solution prepared in step two, rinsing the surface after taking out, terminating hydration, vacuum drying, and obtaining a cement test block surface calcium carbonate crystalline layer. The prepared crystalline layer is uniform and dense, the operation is simple, the surface mineralization can be carried out by using bicarbonate ions in the inorganic ion solution, the penetration of chloride ions and the potential negative effects accompanied by the penetration of chloride ions are avoided, and the cement test block can be further modified by silane to obtain high hydrophobicity and resist moisture infiltration.

The invention belongs to the technical field of nail polish gel preparation, and discloses a nail polish gel and a preparation method thereof, the nail polish gel contains a urethane acrylate copolymer and a photoinitiator, and the mass ratio of a hydrophilic group in a main chain of the urethane acrylate copolymer is 5-15%. The hydrophilic group and the photoinitiator form a solid coating with a compact cross-linked structure after photocuring, internal molecular main chains are mutually cross-linked to form a fishing net layered structure, and the fishing net layered structure is high in hardness and not prone to cracking; hydrophilic groups react with hydroxyl groups on the surfaces of nails to form hydrogen bonds, so that the nail adhesive has a good nail adhesion effect and is not easy to fall off. The hydrophilic group is located in the middle of the layered structure of the fishing net and reacts with bicarbonate radical ions in nail polish removing water used for nail polish removing, the layered structure of the fishing net can be destroyed, and then the solid coating which is tightly adhered to the nail and has a compact structure is cracked, so that the nail polish gel solid coating can be integrally stripped from the nail, the nail polish gel can be removed without being polished, and the nail polish gel can be used for nail polish removing. And no harm is caused to nails.

A process for softening hard water comprising the steps of: a) contacting hard water with a thermally regenerable ion exchange resin pre- saturated with ammonium and bicarbonate ions so as to replace 'hard' ions in the feedwater with NH4 + and HCO3 - ions; b) heating the ammonium bicarbonate (AB) solution produced to decompose the AB, producing a soft product water of low salinity; c) collecting the emitted ammonia and carbon dioxide gases by bubbling through cool water to re-form the concentrated AB regenerant solution; and d) passing the concentrated ammonium bicarbonate solution through the hardwater exhausted resin, at elevated temperatures (up to 80°C) to partially decompose the AB and generate controlled partial pressures of NH3 and CO2 (up to 10 atm, in a sealed column) to drive the resin regeneration process. e) repeating steps a) to d).

Provided is a carbonate-containing granular material production method with which it is possible to produce a carbonate-containing granular material at a cost lower than when using conventional methods.　The present invention has a carbonation step for bringing, into contact with a carbonation-target granular material at a maximum temperature of higher than 0°C to lower than 100°C, either water, a carbonation accelerator, and at least one among a carbon dioxide-containing substance, a carbonate ion-containing water, and a hydrogen carbonate ion-containing water, or a carbonation accelerator and at least one among a carbon dioxide-containing water, a carbonate ion-containing water, and a hydrogen carbonate ion-containing water. The total amount of water brought into contact in the carbonation step is 1 mass% or more of the carbonation-target granular material. The carbonation accelerator contains bacteria. The bacteria are at least one selected from the genus Bacillus, the family Bacillaceae, the class Bacilli, the family Clostridiaceae, the family Micrococcaceae, the family Microbacteriaceae, or the family Comamonadaceae.

The invention discloses a method for activating manganese dioxide by using oxygen-containing anions, which comprises the following steps: placing delta-MnO2 in simulated distribution water, adding NH4 < + > to enable the concentration of the delta-MnO2 to be 2 mg / L, oscillating and incubating in a shaking table for more than 20 days, and changing the water once every 1-2 days to obtain manganese oxide with NH4 < + > oxidation capacity, the simulated distribution water contains oxygen anions with the following concentrations: 2 mM of HCO3 <->; and 0.002 mM of HPO4 < 2->. According to the method disclosed by the invention, the structure of delta-MnO2 is optimized by controlling the ratio of bicarbonate ions to hydrogen phosphate ions in water, so that the oxidation capacity of delta-MnO2 is remarkably improved, and NH4 < + > in water can be removed within a few hours instead of the original capacity without catalytic oxidation of NH4 < + >. The invention provides a feasible and economical solution for large-scale preparation of MnO2-based filter materials and water deamination engineering, and has a wide engineering application prospect.

Provided is a method for producing a carbonate-including substance, wherein a carbonate-including substance can be produced with higher carbonation efficiency than before.　This method for producing a carbonate-including substance has: a hydration step in which water or ice is brought into contact with a substance for carbonation that has a maximum temperature of 100°C to 600°C, and a hydration process is performed; and a carbonation step in which either water and a carbon dioxide-including substance, or at least one of carbon dioxide-including water, carbonate ion-including water, and hydrogencarbonate ion-including water is or are brought into contact with the substance for carbonation that has been subjected to the hydration process and has a maximum temperature of greater than 0°C and less than 100°C, wherein the total water quantity of the water or ice that is brought into contact with the substance for carbonation in the hydration step is greater than or equal to 1 vol% of the substance for carbonation.

A water and carbon dioxide co-electrolysis system (1) comprises an anion exchange membrane (AEM) cell (2) having at least one AEM cell (2c) comprising a cathode (8), an anode (12), and an AEM membrane (16) separating the cathode from the anode, and an anolyte circuit (18) in which the AEM membrane (16) is separated from the anode, an anolyte is fluidly connected to the anode (12) via an anolyte inlet (14i) and an anolyte outlet (14o) of the anode (12). The CO2 and H2O co-electrolysis system further comprises a mineralization system (3) comprising a mineralization unit (27) connected to the anolyte circuit (18) and comprising a mineralized metal configured to react with carbonate and bicarbonate ions circulating in the anolyte circuit (18) to form a metal carbonate.

The application discloses dialysis concentrate preparation equipment, one-way centralized liquid supply system and a working method thereof, to solve the problems of complex structure, large floor area and low working efficiency of the existing liquid preparation equipment. The application comprises a box body and a main machine, the box body is internally provided with a water tank, a powder bin, a mixer, a liquid supply balancer and a mixer stirring pump, reverse osmosis water and dialysis powder are injected into the mixer, and stirring is performed through the mixer stirring pump; the main machine is used for controlling the working of the water tank, the mixer and the liquid supply balancer; the application has the advantages of simple structure, convenient use, full intelligent preparation of dialysis concentrate, improved working efficiency, reduced artificial burden, exquisite and compact complete equipment, saved floor space, small floor area, liquid preparation mode of immediate use, inhibited bicarbonate ion volatilization, improved dialysis liquid purity, separated supply of concentrate to dialysis machines in negative area and positive area, realized one-way branch liquid supply, and avoided hospital infection risk.

The invention relates to the technical field of biological fermentation, in particular to a method for identifying a dominant metabolic pathway of VFA degradation in AD based on an energy efficiency ratio. The method comprises the following steps: determining boundary conditions of a VFA metabolic pathway; and acquiring data in the operation process of the AD reactor. According to the method for identifying the dominant metabolic pathway of VFA degradation in AD based on the energy efficiency ratio, process parameters such as gas components, VFA concentration, pH value, bicarbonate ion concentration and the like in AD (anaerobic digestion) are regularly detected, a thermodynamic function in a reaction system is corrected according to a metabolic chemical equation of VFA in combination with phase state, temperature and substrate and product concentration factors, and the dominant metabolic pathway of VFA degradation in AD is identified. Calculating a delta G value corresponding to each metabolic pathway; the electron transfer mole number (Ne) involved in each metabolic reaction is calculated, and delta G is normalized into a form (delta G / Ne) of electron transfer per mole; preliminary identification of the dominant metabolic pathway can be realized through the physicochemical parameters easy to obtain in the AD system, and the method has the remarkable advantages of high efficiency, convenience and high universality.

According to the marine decarburization method, the marine ship engine tail gas carbon capture and storage (CCS) system and the ship comprising the CCS system, only seawater is used for washing marine ship engine tail gas, CO2 in the tail gas is dissolved and captured, the tail gas is converted into bicarbonate ions (HCO3 <->) and then discharged into the ocean according to a legal standard process, deep carbon capture and storage of the marine ship tail gas are achieved, and the marine ship tail gas is recycled. Meanwhile, tail gas black carbon (BC) emission is deeply removed, the two challenges of CO2 emission and BC emission of green marine transportation development are solved at a time at low cost, and the low-carbon transformation method is suitable for new ships with various fuels and various purposes and existing ships to achieve green marine transportation low-carbon transformation.

The invention relates to a method for surface preparation of a steel sheet (12) hot-dip coated with a zinc-magnesium-aluminium coating (14, 16) for subsequent treatment of this hot-dip coated steel sheet (12), which in particular comprises at least one of the following treatment steps: an oiling of the surface (36, 38) of the zinc-magnesium-aluminium coating (20, 22), a targeted formation of a conversion layer on the surface (36, 38), in particular by phosphating, a coating of the surface (36, 38) with an organic coating system, in particular a coating, and an adhesion to the surface (36, 38), The method comprises a step of applying a conversion treatment solution to the surface (36, 38) of the zinc-magnesium-aluminum coating. The solution is provided to contain carbonate and / or hydrogen carbonate ions. The invention further relates to the use of a hot-dip coated steel sheet (12) prepared by the method, a corresponding hot-dip coated steel sheet (12) itself, and a corresponding device (10) for surface preparation of a hot-dip coated steel sheet (12) with a zinc-magnesium-aluminium coating.

The invention discloses an acid-resistant microalgae construction method based on bicarbonate ion transporter protein, and belongs to the field of biology and molecular biology. The method specifically comprises the following steps: taking Phatr3J33543 with a sequence structure as shown in SEQ ID No.1, Phatr3J50516 with a sequence structure as shown in SEQ ID No.2 or Phatr3Jdraft1806 with a sequence structure as shown in SEQ ID No.3 as a target gene, removing a termination codon of the target gene, and connecting a fluorescent protein gene with an initiation codon removed through a DNA (Deoxyribose Nucleic Acid) sequence for coding glycine to obtain a recombinant gene; inserting the recombinant gene into multiple cloning sites of a pPhaNR plasmid to obtain a vector plasmid; introducing the carrier plasmids into diatom cells through electroporation, and inoculating the diatom cells to an ESAW solid selective culture medium containing bleomycin to grow brown algal colonies; selecting the algal colonies with fluorescent protein signals from the algal colonies, namely the acid-resistant engineering algae. Compared with wild algae, the acid resistance of the engineering algae obtained by the invention is obviously improved. The method has important reference significance on acid-resistant diatom cultivation.

The invention relates to a molecular resist composition and a pattern forming method. The present invention addresses the problem of providing: a molecular resist composition having excellent sensitivity, resolution, and LWR in optical lithography using high-energy rays; and a pattern forming method using the molecular resist composition. The present invention is a molecular resist composition characterized by containing a sulfonium salt represented by the following formula (1) or (2), a salt containing a cation represented by the following formula (1-1) and a halide ion, a nitrate ion, a hydrogen sulfate ion, a bicarbonate ion, a tetraphenylborate ion or an anion represented by any one of the following formulae (1-2)-(1-8), and an organic solvent, and no base polymer is contained.

A reactor for enhanced and scalable CO2 sequestration and storage in water with neutral or near neutral pH outflow is described, along with a method of use thereof. The reactor and method are an AWL reactor and method that additionally employ an acid to enhance CO2 hydration kinetics, and, as such, the conversion of CO2 to bicarbonate ions for storage. In addition, the reactor and method employ a base, in an amount equimolar to the acid's amount, to directly capture any un-titrated aqueous CO2, and, as such, to convert even more CO2 to bicarbonate ions for robust storage, and also to neutralize the otherwise over-acidified effluent water stream being returned to the environment from the reactor.

The utility model discloses a device for producing desalted water by using reverse osmosis concentrated water, which comprises a pipeline reactor, a hollow fiber nanofiltration device, a degassing system and a two-section reverse osmosis device which are sequentially connected through pipelines, and further comprises a hydrochloric acid storage tank, a liquid outlet pipeline is arranged on the hydrochloric acid storage tank, and a liquid outlet pipeline is arranged on the liquid outlet pipeline. And the liquid outlet pipeline is connected to the pipeline reactor through a liquid outlet pump. The method comprises the following steps: firstly removing carbonate ions and bicarbonate ions in reverse osmosis concentrated water by adjusting the pH value, then removing most of calcium ions, magnesium ions and sulfate ions by virtue of a hollow fiber nanofiltration device, finally removing most of free carbon dioxide by virtue of a degassing system, and feeding into a second-stage reverse osmosis device to produce desalted water; according to the device, the scaling risk and the operation energy consumption of the two-stage reverse osmosis device can be greatly reduced, the recovery rate can be increased to 84%, the total recovery rate of desalted water is increased to 96%, and the production cost of the desalted water can be further reduced.

The invention relates to the technical field of carbon dioxide electroreduction, in particular to an electrolyte and method for preparing methane by inhibiting hydrogen evolution reaction in the CO2 electroreduction process, the electrolyte is an aqueous solution of inorganic salt, cations of the inorganic salt comprise alkali metal cations, and anions of the inorganic salt comprise Cl <-> and HCO3 <->. According to the method, methane is selectively prepared by using the composite electrolyte containing chloride ions and bicarbonate ions in an environment with a neutral pH value, and a hydrogen evolution reaction in electrochemical reduction of carbon dioxide is effectively inhibited. According to the method, the composite electrolyte containing chloride ions and bicarbonate ions is used, the catalyst is optimized, the pH value of the electrolyte and the reaction potential selectivity are regulated and controlled, so that the Faraday efficiency of methane is improved, and the Faraday efficiency of methane and ethylene in the product is regulated and controlled by changing the molar ratio of the chloride ions to the bicarbonate ions.

The invention relates to a seawater-based ionic composition for the manufacture of medical devices intended for administering said composition to patients, and to restorative and soothing cosmetics, comprising a specific concentration of chloride (Cl), sodium (Na), sulfate (SO4), sulfur (S), magnesium (Mg), calcium (Ca), potassium (K), and bicarbonate (HCO3). This composition is reproducible, stable, well-tolerated, and can be used alone or in combination with other ingredients.

This invention relates to the field of chemical pharmaceutical manufacturing technology, and discloses a process for preparing compound sodium bicarbonate to improve acid-base balance. The process includes: preparing an alkaline sodium bicarbonate raw material solution and an acidic raw material solution containing calcium and magnesium salts; dispersing the alkaline raw material solution into droplet clusters using a coaxial gas-liquid atomizing nozzle and a carbon dioxide gas source; allowing the droplet clusters to absorb carbon dioxide and pre-regulate their own hydrogen ion concentration during vertical vector descent; introducing the droplet clusters into the acidic raw material solution to form a homogeneous system and dispensing them; sterilizing the pharmaceutical packaging containers using a terminal overpressure compensation method; and injecting carbon dioxide into the sterilization chamber during the heating stage to establish an external pressure barrier. This invention solves the contradiction of high-concentration calcium and magnesium ions and bicarbonate ions precipitation in a single homogeneous system by blocking the precipitation formation pathway through microscale acidification modification, achieving long-term physical stability and coexistence of the formulation.

The object of the invention is to provide a novel reservoir assembly for providing a cardioplegic solution and a method for manufacturing the same. An aspect of the invention is to provide a reservoir assembly for providing a cardioplegic solution, comprising a multi-chamber reservoir; a gas-impermeable outer package packaging the multi-chamber reservoir; an oxygen detection agent and a deoxygenation agent in a space part between the multi-chamber reservoir and the outer package, wherein the deoxygenation agent neither generates nor absorbs carbon dioxide, wherein the multi-chamber reservoir comprises at least a first chamber, a second chamber, and a first separator wall that separates the two chambers, the first chamber holds a first medical liquid, the second chamber holds a second medical liquid containing bicarbonate ions, one or both of the first medical liquid and the second medical liquid contains potassium ions, the cardioplegic solution comprises the first medical liquid and the second medical liquid, and the cardioplegic solution contains bicarbonate ions of 5 to 20 mEq / L and potassium ions of 5 to 35 mEq / L. Another aspect of the invention is to provide a method for manufacturing the reservoir assembly for providing a cardioplegic solution.

The application discloses a pyridine amine based bifunctional polyionic liquid catalyst and a preparation method and application thereof. The pyridine amine based bifunctional polyionic liquid catalyst is prepared by using 1-(3-propylamine hydrobromide)-3-vinylimidazole ionic liquid [PAVIm]Br·HBr and 1-pyridyl-2-vinylimidazole ionic liquid [PDVIM]Br as comonomers, adding a crosslinking agent and an initiator, and copolymerizing to synthesize a polyionic liquid catalyst I. The pyridine amine based bifunctional polyionic liquid catalyst has a developed pore structure and rich ion groups (carbonate ions and bicarbonate ions), exhibits high CO2 adsorption performance, can catalyze one-pot synthesis of a chain carbonate from CO2, an epoxide compound and methanol under a solvent-free and cocatalyst-free condition, and realizes efficient utilization of CO2.

The invention relates to a method for determining a sodium and / or bicarbonate ion concentration of a dialysis fluid, the use of the method for proportioning the dialysis fluid and the use of a device for extracorporeal blood treatment for carrying out the method.

The present application relates to a kind of water treatment system and water hardness continuous removal device, raw water is entered into raw water chamber through raw water import, is filtered after being filtered by conductive filter screen, and the water production is entered into water production chamber, and the water production obtained is discharged outward through water production outlet;Conductive filter screen is electrolyzed in the process of electrification, and hydroxyl ion is generated on its surface, reacts with bicarbonate ion in raw water chamber to obtain carbonate ion, and carbonate ion combines with calcium magnesium ion to obtain carbonate precipitate on conductive filter screen, that is, the scaling component is removed from water in advance by ionization technology, without using any chemical agent.In addition, when scaling is formed, periodically control the work of scraping assembly, and the scaling attached to conductive filter screen is scraped off from conductive filter screen, to prevent scaling accumulation from affecting device operation, ensure normal water production, without adding or using any chemical agent, and without using a large amount of raw water in backwashing process, water hardness can be continuously removed, and the operating cost is relatively low.

The disclosure relates to a process for producing magnesium hydrogen carbonate and / or calcium hydrogen carbonate. An anion exchanger loaded with bicarbonate ions is provided, and a solution containing magnesium salt and / or calcium salt is then passed through the anion exchanger.