192 results about "Bicarbonate" patented technology

The present invention relates to a pharmaceutical composition comprising a weak acid drug, with the use of a bicarbonate salt to achieve a high incorporation of the drug into the liposome and a better therapeutic efficacy. Also disclosed is a method for treating a respiratory disease using the pharmaceutical composition disclosed herein.

Disclosed herein are compositions comprising an NSAID such as meloxicam and / or rizatriptan in combination with a cyclodextrin and / or a carbonate or a bicarbonate. These compositions may be orally administered, for example, to improve the bioavailability or pharmacokinetics of the NSAID for the treatment of pain such as migraine, arthritis, and other conditions. Also disclosed herein are methods of treating pain, such as migraine, comprising administering meloxicam and rizatriptan to a human being suffering from pain, such as migraine. For migraine, these methods may be particularly useful when the meloxicam and rizatriptan are administered while the human being is suffering from an acute attack of migraine pain or migraine aura. In some embodiments, the combination of meloxicam and rizatriptan may be administered in a manner that results in a Tmax of meloxicam of 3 hours or less.

A process for the production of carbon monoxide is described. The process involves the electrochemical desorption of carbon dioxide and oxygen from a solution containing a metal bicarbonate and the formation of carbon monoxide from the carbon dioxide. The carbon monoxide produced can be used in a process for the formation of syngas.

Disclosed herein are compositions comprising an NSAID such as meloxicam and / or rizatriptan in combination with a cyclodextrin and / or a carbonate or a bicarbonate. These compositions may be orally administered, for example, to improve the bioavailability or pharmacokinetics of the NSAID for the treatment of pain such as migraine, arthritis, and other conditions. Also disclosed herein are methods of treating pain, such as migraine, comprising administering meloxicam and rizatriptan to a human being suffering from pain, such as migraine. For migraine, these methods may be particularly useful when the meloxicam and rizatriptan are administered while the human being is suffering from an acute attack of migraine pain or migraine aura. In some embodiments, the combination of meloxicam and rizatriptan may be administered in a manner that results in a Tmax of meloxicam of 3 hours or less.

The invention discloses a ketoazine-based polymer, an anion exchange membrane and a preparation method and application of the ketoazine-based polymer and the anion exchange membrane. A first linking group and a second linking group are mixed and then mixed with an aryl monomer A in an aprotic solvent of halogen atoms; slowly adding a super acid mixture; performing polymerization reaction in an environment of-5 to 3 DEG C to obtain a reaction solution; pouring the reaction liquid into a first mixed solvent to obtain PAAz; carrying out primary quaternization reaction on PAAz through carbonate, bicarbonate or hydroxide salt of alkali metal, and adding an organic base catalyst to assist the primary quaternization reaction; in the first quaternization reaction, a quaternization reagent is added; and pouring into a second mixed solvent, and precipitating to obtain purified PAAz. Under the condition of super acid catalysis, two or more alicyclic amine derivatives containing ketone groups react with one or more aromatic fused rings to generate a polymer containing secondary or tertiary amine. And carrying out quaternization treatment to finally form the cationic polymer.

The application discloses a preparation method and purification process of copper hydroxide, a certain amount of anhydrous copper sulfate is accurately weighed, and a certain volume of deionized water is added to prepare a solution with a certain concentration, a copper ammonia solution is prepared: slurry is prepared from circuit board sludge, screening is performed, ammonium bicarbonate or ammonium carbonate is added for reaction, and a copper ammonia solution containing carbonate or bicarbonate is obtained through purification; in addition, high-purity copper powder is added into concentrated ammonia water, concentrated hydrogen peroxide solution is slowly dropped into the concentrated ammonia water, and the dropping is continued until no large amount of bubbles is generated in the solution, and the solution is filtered to obtain a clear indigo blue solution. The production process adds the step of adding a stabilizer and stirring, guarantees the stable state of the copper hydroxide crystal, and enables the copper hydroxide crystal to remain unchanged into copper oxide for one year in an environment with a temperature as high as 60 degrees.

To improve the adhesion of the coating film to the resin and the resistance of the coating films to blocking each other. [Solution] The polyurethane aqueous dispersion according to the embodiment comprises a polyurethane resin (A) containing a polyester polyol as a constituent component dispersed in an aqueous dispersion medium, and includes a carbodiimide group-containing compound (B) and a salt (C) of an acid and an alkali metal. The polyurethane resin (A) has carboxyl groups, and the salt (C) is at least one selected from the group consisting of bicarbonates, carbonates, monocarboxylates, dicarboxylates, tricarboxylates, and phosphates, and the salt (C) exists in an ionized state in the aqueous dispersion medium.

This invention discloses an in-situ removal process for total inorganic iodide in water based on oxidation-adsorption, belonging to the field of water treatment technology. The process includes: first, taking raw water containing inorganic iodide, adding bicarbonate and adjusting the pH of the solution to 7-7.5; then, adding ferrous salt to the raw water; finally, adding KMnO4 to the raw water with added ferrous salt under stirring conditions, reacting to prepare a MnO2-nascent iron particle complex; on the one hand, promoting the removal of total inorganic iodide from water through mild oxidation-adsorption. ‑ Oxidation transformation occurs to generate HOI / I2; on the other hand, the in-situ products HOI / I2 are adsorbed and fixed through adsorption / co-precipitation methods, and nascent iron is captured through surface coordination or electrostatic adsorption. This invention achieves the capture of I2 under neutral / weakly alkaline drinking water conditions through a mild and controllable oxidation-adsorption synergistic mechanism. ‑ Simultaneous adsorption and removal of its conversion products are achieved to ensure that total iodine is removed to the required standard.

Methods of separating water, salt, CO2, and crude oil from wastewater, the methods comprising: providing gas / oil separation system that produces a waste saline water stream and a CO2 stream; providing an electrochemical cell having an anode, a cathode, and three electrodialytic compartments; feeding a fresh water stream to the anode to produce H+ and O2; feeding the waste CO2 stream and O2 to the cathode to produce bicarbonate (HCO3—) and hydroxide ions (OH−); feeding the waste saline water stream to a center electrodialytic compartment; wherein the sodium Na+ from the waste saline water stream reacts with the bicarbonate to form NaHCO3 and the chloride (Cl−) from the waste saline water stream reacts with the H+ to produce hydrochloric acid; and producing salt and desalinated water.

COMPOSITION TO DEHYDRATE Tillandsia sp, characterized in that it comprises, in an aqueous solution, a main component selected at least from Na bicarbonate (NaHCO3), ammonium bicarbonate (NH4)HCO3 and calcium hydroxide, for a total, alone or combined with sodium bicarbonate, of from 0.045 g / cm3 of aqueous solution up to 0.10 g / cm3 of an aqueous solution and 0.30 cm3 of a hydroalcoholic solution of carminic acid up to a maximum of 0.80 cm3 / cm3 of an aqueous solution.

This invention relates to antifouling composite membranes, their preparation methods, and applications. The preparation method of the antifouling composite membrane includes the following steps: preparing a coating solution by mixing water-soluble polyphenols, protein, a water-soluble polymer containing carboxyl groups, a soluble calcium salt, and water; placing the coating solution on the surface of a separation membrane; then placing the separation membrane with the coating solution in a sealed container containing bicarbonate; and performing heat treatment to form a pre-formed antifouling layer, thereby obtaining a pre-formed antifouling composite membrane. The heat treatment temperature is greater than or equal to the thermal decomposition temperature of the bicarbonate. Finally, the pre-formed antifouling composite membrane is cleaned to form an antifouling layer, resulting in the antifouling composite membrane. The antifouling composite membrane prepared by this method exhibits high stability, high rejection rate, high water flux, and high antifouling performance when applied to water treatment.

The application provides a kind of porous material, its preparation method and its application, the raw material of the porous material includes the following weight parts of components: engineering spoil: 25-40 parts;Pyrite powder: 25-40 parts;Silica fume: 10-15 parts;Boric acid and / or its salt: 10-15 parts;And carbonate and / or bicarbonate: 5-10 parts.In the application, engineering spoil, pyrite, silica fume derived from industrial or construction waste are used for sintering, which increases the way of waste resource utilization, reduces the damage of the above waste to the environment, and protects the environment;Boric acid substances reduce the sintering temperature of traditional porous materials, save energy and reduce consumption;Carbonate or bicarbonate is used for foaming to increase the specific surface area of the material and enhance the adsorption property;The raw material components are scientifically compounded and reasonably proportioned, the phosphorus removal rate can reach more than 80% when rainwater is treated by the application, and the price is low due to the wide sources of each component, thereby effectively reducing the preparation cost.

The present application relates to the technical field of nuclear fuel cycle, and particularly relates to a method for recycling uranium fluorination wastewater. The method is as follows: adjusting the concentration ratio of bicarbonate and carbonate in the uranium conversion leaching solution, carrying out decolorization and filtration treatment to obtain a filtrate; the filtrate is subjected to uranium adsorption through a resin, and the resin adsorbed with uranium is subjected to leaching; the adsorption tail liquid is added with magnesium hydroxide slurry to adjust the pH to above 11, and then filtered, and the filtrate is adsorbed by amidoamine-based adsorption fiber; the adsorption tail liquid is added with magnesium carbonate slurry to generate magnesium fluoride and carbonate ions, and then filtered to obtain a sediment and a filtrate respectively; the filtrate is returned as a leaching agent of fluorination tail gas or is discharged after treatment; the sediment is used together with new magnesium carbonate to participate in fluorine removal reaction again, and the unreacted magnesium carbonate is used again. The present application realizes efficient recovery of uranium in the leaching solution and recycling of the leaching solution, fully utilizes the residual alkali in the returned liquid, reduces the treatment cost of fluorination tail gas, controls the radioactivity of the waste residue, and realizes radioactivity exemption of the treated sediment.

The invention belongs to the technical field of nylon 66 polymer performance testing, and particularly relates to a method for simultaneously testing the content of iodide ions and bromide ions in a nylon 66 polymer, which comprises the following steps of: extracting the iodide ions and the bromide ions in the polymer by using weak acid salt (sub-carbonate or bicarbonate) instead of potassium nitrate as an ionic strength regulator; the acid environment in the extracted solution is adjusted with formic acid, silver nitrate is adopted as a titrant, iodide ions and bromide ions in the extract liquor are detected at the same time through potentiometric titration, and the problem that the iodide ions and the bromide ions cannot be detected at the same time is solved.

This invention discloses a chemical remediation agent for remediating TNT-contaminated soil, its preparation method, and its application. The chemical remediation agent comprises an oxidant, an activator, and an auxiliary agent. The oxidant is hydrogen peroxide, the activator is bicarbonate, and the auxiliary agent is glycerol or a biosurfactant. The preparation method of the chemical remediation agent is as follows: the oxidant is diluted with water to obtain a diluted oxidant solution; the auxiliary agent and the activator are added sequentially to the diluted oxidant solution to obtain the chemical remediation agent. The chemical remediation agent provided by this invention is suitable for TNT-contaminated soil with a TNT concentration ≥1000 mg / kg, achieving a TNT removal rate ≥80% in the soil. Furthermore, this chemical remediation agent is environmentally friendly and will not cause secondary pollution to the soil.

The invention relates to a method for optimizing struvite production parameters based on response surface method and Minteq combined regulation and control, and belongs to the technical field of parameter optimization. The invention discloses a method for optimizing struvite production parameters based on response surface method and Minteq combined regulation and control. The method has the following advantages: (1) the pH can be regulated and controlled according to the concentration of heavy metals in wastewater, the concentration of bicarbonate maximizes the recovery rate of phosphorus, the occurrence of heavy metals in struvite products is minimized, and the yield of the struvite products is improved; optimal process parameters are provided for safe and healthy application of agricultural soil fertilization; (2) the adopted response surface method has the characteristics of simple operation, high feasibility and accurate prediction; (3) regulation and control can be performed according to the concentration and alkalinity of heavy metals contained in phosphorus-containing wastewater of pig manure wastewater, and high-quality phosphorus recovery of different types of wastewater is realized; and (4) parameter regulation and control can be carried out according to the measured wastewater with phosphorus recovery value, the dosage of sodium hydroxide is saved, and the cost is greatly saved.

The effect of aqueous compositions of copper based fungicides is improved by including a mixture of sodium dioctyl sulfosuccinate and sodium lauryl sulphate surfactants in the aqueous composition which does not require the presence of a bicarbonate.

An example method for quantifying an amount of carbon dioxide captured from liquid is described including receiving, from an autonomous measurement sensing system, a measured amount of dissolved aqueous carbon, which is generated by dosing of material into a container holding the liquid, and a measured amount of carbon dioxide reduction (CDR) in the liquid held in the container, and performing a verification of a volume of carbon captured and stored as bicarbonate and carbonate based on a comparison of the measured amount of dissolved aqueous carbon and the measured amount of CDR. Additional verifications can be performed based on a comparison of the measured amount of CDR and a calculated amount of CDR. Following, based on either of the first verification or the second verification failing, the method includes providing instructions to change an amount of the dosing of the material into the container.

The application belongs to the field of chemical catalysis technology, and discloses a catalyst for preparing butadiene by coupling ethanol, a preparation method and application. The application first proposes introducing carbonate or bicarbonate as a structure modifier in the synthesis process of rare earth phosphate, and then removing the carbonate or bicarbonate in the calcination process to form a porous carrier with a high specific surface area. Compared with the catalyst without introducing carbonate, the prepared carbonate / bicarbonate treated catalyst has a significantly higher specific surface area, thereby significantly improving the yield of butadiene. Subsequently, by loading a transition metal, the ethanol conversion rate is further improved, a high butadiene yield is achieved, and good industrial application prospects are achieved.

Disclosed herein are compositions comprising an NSAID such as meloxicam and / or rizatriptan in combination with a cyclodextrin and / or a carbonate or a bicarbonate. These compositions may be orally administered, for example, to improve the bioavailability or pharmacokinetics of the NSAID for the treatment of pain such as migraine, arthritis, and other conditions. Also disclosed herein are methods of treating pain, such as migraine, comprising administering meloxicam and rizatriptan to a human being suffering from pain, such as migraine. For migraine, these methods may be particularly useful when the meloxicam and rizatriptan are administered while the human being is suffering from an acute attack of migraine pain or migraine aura. In some embodiments, the combination of meloxicam and rizatriptan may be administered in a manner that results in a Tmax of meloxicam of 3 hours or less.

The present invention relates to a coagulant for cementitious compositions, in particular cementitious compositions having a binder as a source of aluminate and / or sulphoaluminate, the coagulant comprises a source of an alkali metal carbonate, a metal sulfate, an alkali metal hydroxide, and optionally an alkali metal bicarbonate, an alkaline earth metal hydroxide, or an alkaline earth metal oxide. The invention also relates to cementitious compositions having a binder as a source of aluminate and / or sulphoaluminate and the coagulation accelerator according to the invention.

The invention belongs to the field of contact lens care, and particularly relates to a sandwich effervescent tablet for cleaning contact lenses and a preparation method of the sandwich effervescent tablet. The outer layer is prepared from the following raw materials: citric acid, sodium bicarbonate, disodium ethylene diamine tetraacetate, a surfactant, polyvinylpyrrolidone, microcrystalline cellulose and colloidal silicon dioxide; the middle layer is prepared from the following raw materials in parts by weight: sodium percarbonate, tetraacetylethylenediamine, phosphate buffer salt, a surfactant, anhydrous sodium carbonate, microcrystalline cellulose and colloidal silicon dioxide; the inner core is prepared from the following raw materials in parts by weight: catalase, a stabilizer, hydroxy propyl cellulose K4M, ethyl cellulose, microcrystalline cellulose and sodium bicarbonate. According to the invention, citric acid / bicarbonate is matched with an active agent to weaken a biological membrane in the outer layer, and a permeation channel is opened preferentially; the H2O2 platform is formed by matching middle-layer sodium percarbonate; and the inner core adopts HPMC / EC controlled-release catalase to realize hysteresis-burst release neutralization.

A method for treating a blowdown stream from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer, said blowdown stream comprising sodium carbonate and / or sodium bicarbonate and at least 1 wt% sodium chloride and / or sodium sulfate, the method comprising: - causticizing at least 50 mol% of the sodium from the sodium carbonate and / or sodium bicarbonate in a caustic solution and in a calcium carbonate sludge with lime and water, - separating the calcium carbonate sludge from the caustic solution; - concentrating the caustic solution by removing some of the water to obtain a concentrated caustic solution containing at least 25% NaOH and a crystallized solid containing sodium carbonate and sodium chloride and / or sulfate; - separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or subsequently recovered;- Recycle part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite or bicarbonate crystallizer.;

The application discloses a prevention and treatment composition, a prevention and treatment method and a device, and relates to the field of biological prevention and treatment. The prevention and treatment composition is used for biological prevention and treatment by applying a voltage in a solution form. Functional substances in the prevention and treatment composition include: an electrolyte component, which includes one or more of a bicarbonate compound, a carbonate compound and a nitrogen compound, and the mass proportion of the electrolyte component in the functional substances is greater than or equal to 50% and less than or equal to 87%; an interface regulator, which includes a polyhydric alcohol compound, and the mass proportion of the interface regulator in the functional substances is greater than or equal to 5% and less than or equal to 20%; and a functional additive, which includes a borate compound, and the mass proportion of the functional additive in the functional substances is greater than or equal to 2% and less than or equal to 10%. The prevention and treatment composition can realize chemical-physical synergistic prevention and treatment, and can avoid the generation of pesticide resistance. The prevention and treatment composition can be decomposed into water and oxygen after electrolysis for a period of time, and can ensure no chemical residues.

The invention relates to a high-purity reactor for regenerating low-concentration bicarbonate and application of the high-purity reactor. The reactor comprises a cathode end plate, a gas diffusion cathode, a cation exchange membrane, an intermediate plate, a proton exchange membrane, an anode and an anode end plate which are sequentially arranged, the middle plate is provided with a middle cavity, a third feeding port and a third discharging port, and a solid electrolyte layer is arranged in the middle cavity; the cathode end plate is provided with a first feed port, a first discharge port and a groove-shaped first runner, and the anode end plate is provided with a second feed port, a second discharge port and a groove-shaped second runner; the reactor utilizes low-concentration bicarbonate to regenerate high purity on the basis of an electrochemical principle, the utilization rate of resources such as oceans / lakes is increased, the regeneration purity is 99%, industrial-grade current density can be achieved, the stability of the reactor is high, and the reactor has industrial application potential and wide application prospects.

Methods and systems for controlling conditions of precipitation, including crystallization, of a carbonate and / or bicarbonate salt of a carbon dioxide complexing agent are provided. The methods and systems may include controlling a yield, kinetics, and / or morphology of the particles or crystals in the carbonate / bicarbonate salt including at least one of a crystal phase, size, size distribution, shape or surface feature by monitoring, selecting and / or adjusting at least one operational condition including mechanical, chemical, and / or physical operational conditions. Examples of mechanical, chemical, and / or physical operational conditions include shearing, milling, pH, temperature, batch operation, continuous operation or any combinations thereof.

The invention discloses a high-efficiency low-energy-consumption type compound amine CO2 trapping absorbent, which belongs to the technical field of gas purification, and the absorbent is composed of N-methyldiethanolamine, N-aminoethyl piperazine, N-(2-ethoxyl) piperazine, 2-amino-2-methyl-1-propanol, piperazine and deionized water. A steric hindrance amine (AMP) and linear / cyclic polyamine are utilized to construct a steric hindrance-catalysis synergistic reaction system, a high-capacity matrix is provided by MDEA, AEP / HEP / PZ is used as a high-speed proton carrier, and the AMP utilizes a steric hindrance effect to promote the generation of bicarbonate. The absorbent has the characteristics of high absorption rate, high load capacity (greater than or equal to 1.15 mol CO2 / mol amine) and low regeneration energy consumption (less than or equal to 3.20 GJ / t CO2), has good cycle stability, and is suitable for CO2 capture of coal-fired power plants, steel and chemical tail gas.

The present invention relates to a method for producing a plant protein extract comprising providing an aqueous suspension of a plant protein composition acidified to its isoelectric pH, adding an alkaline composition comprising a carbonate or bicarbonate salt to said suspension to correct the pH of said suspension to a pH ranging from 6.2 to 7.0, preferably 6.40 to 6.70, and heat treating the suspension at the corrected pH to form the plant protein extract. The invention also relates to a pea protein extract with a solubility, determined at 20°C and at pH 7, of greater than or equal to 50% and also with a reduced sodium content, and also to the use thereof for producing food products, in particular beverages.

The application discloses a kind of inactivation desulfurization catalyst in-situ regeneration and the method of regeneration liquid circulation and a kind of flue gas desulfurization device, to solve the technical problems that high energy consumption of thermal regeneration and catalyst pore structure is easily damaged, there is security risk in organic solvent regeneration and solvent loss is big.It includes:1) using alkali metal sulfide solution as regeneration liquid and catalyst leaching contact, recovery leaching solution containing polysulfide;2) carbon dioxide gas is introduced into leaching solution to carry out acidification reaction, make polysulfide decompose and release elemental sulfur, recover sulfur by solid-liquid separation, and obtain separated clear liquid;3) add calcium-based regenerant to clear liquid to carry out causticization reaction, precipitate calcium carbonate and convert bicarbonate / carbonate in clear liquid into alkali metal sulfide, so as to restore clear liquid to alkali metal sulfide solution, calcium-based regenerant is selected from at least one of calcium oxide or calcium hydroxide;4) restore alkali metal sulfide solution as regeneration liquid and return to step 1) for recycling.

The present invention provides a porous molded body and a method for producing the same, an alpha-olefin dimerization catalyst and a method for producing the same, and a method for producing an alpha-olefin dimer. A porous molded body (Y) which contains: a porous molded body (X) that satisfies the following requirements (x-1)-(x-3); and an alkali metal carbonate or alkali metal bicarbonate, the content ratio of the alkali metal carbonate or alkali metal bicarbonate being in the range of 1-230 parts by mass per 100 parts by mass of the porous molded body (X), Condition (x-1): the pore volume for which the pore diameter is in the range of 0.01-100 [mu] m is 0.10-1.00 mL / g, and Condition (x-2): the pore volume for which the pore diameter is in the range of 0.01-100 [mu] m is 0.10-1.00 mL / g. Condition (x-2): the median pore diameter of pores having a pore diameter in the range of 0.01 [mu] m to 100 [mu] m is more than 0.01 [mu] m and 10.0 [mu] m or less. Condition (x-3): the crushing strength is 0.7 kgf to 15.0 kgf.