Process for the joint production of sodium carbonate and sodium bicarbonate crystals, according to which: a solid powder derived from sodium sesquicarbonate, having a mean particle diameter comprised between 0.1 and 10 mm is dissolved in water; the resulting water solution is introduced into a crystallizer, wherein a first water suspension comprising sodium carbonate crystals is produced; the first water suspension is subjected to a separation, in order to produce crystals comprising sodium carbonate on the one hand, which are valorized, and a mother liquor on the other hand; and a part of the mother liquor is taken out of the crystallizer and put into contact in, a gas liquid contactor, with a gas comprising carbon dioxide, in order to produce a second water suspension comprising sodium bicarbonate crystals, which are separated and valorized. A reagent powder comprising sodium bicarbonate crystals made by such process.

Process for the joint production of sodium carbonate and sodium bicarbonate crystals, according to which: a solid powder derived from sodium sesquicarbonate, having a mean particle diameter comprised between 0.1 and 10 mm is dissolved in water; the resulting water solution is introduced into a crystallizer, wherein a first water suspension comprising sodium carbonate crystals is produced; the first water suspension is subjected to a separation, in order to produce crystals comprising sodium carbonate on the one hand, which are valorized, and a mother liquor on the other hand; and a part of the mother liquor is taken out of the crystallizer and put into contact in, a gas liquid contactor, with a gas comprising carbon dioxide, in order to produce a second water suspension comprising sodium bicarbonate crystals, which are separated and valorized. A reagent powder comprising sodium bicarbonate crystals made by such process.

The disclosure provides seven integrated methods for the chemical sequestration of carbon dioxide (CO.sub.2), nitric oxide (NO), nitrogen dioxide (NO.sub.2) (collectively NO.sub.x, where x=1, 2) and sulfur dioxide (SO.sub.2) using closed loop technology. The methods recycle process reagents and mass balance consumable reagents that can be made using electrochemical separation of sodium chloride (NaCl) or potassium chloride (KCl). The technology applies to marine and terrestrial exhaust gas sources for CO.sub.2, NOx and SO.sub.2. The integrated technology combines compatible and green processes that capture and/or convert CO.sub.2, NOx and SO.sub.2 into compounds that enhance the environment, many with commercial value.

A method for dissolving a lithium compound according to the present invention includes bringing a lithium compound into contact with water or an acidic solution, and feeding, separately from the lithium compound, a carbonate ion to the water or the acidic solution to produce carbonic acid, and allowing the carbonic acid to react with the lithium compound to produce lithium hydrogen carbonate.

A treatment method for reducing carbon dioxide emission of combustion exhaust gas includes: a caustic soda synthesis step; a treatment step of reducing carbon dioxide emission of combustion exhaust gas; and a recycling step. In the caustic soda synthesis step, a natural sodium carbonate aqueous solution (Na.sub.2CO.sub.3) prepared by dissolving natural sodium carbonate ore powder composed of Na.sub.2CO.sub.3 and NaHCO.sub.3 in a caustic soda aqueous solution is used to generate a caustic soda aqueous solution and calcium carbonate precipitate by a causticization reaction with slaked lime, and solid-liquid separation is performed to obtain a synthetic caustic soda aqueous solution. In the treatment step, the synthetic caustic soda aqueous solution and purified combustion exhaust gas are brought into gas-liquid countercurrent contact so that carbon dioxide in the exhaust gas is absorbed by the synthetic caustic soda aqueous solution and immobilized as sodium carbonate.

The present invention presents an integrated system for the production of Na.sub.2HCO.sub.3 from CO.sub.2 captured from industries or power plants by means of a dry carbonate process starting from trona as raw material (Na.sub.2CO.sub.3NaHCO.sub.3-2H.sub.2O) and converting it into sodium carbonate (Na.sub.2CO.sub.3). The optimized integration of the unit allows coupling the system with renewable energies at medium temperatures below 220 C., such as biomass or medium temperature solar thermal energy systems. The use of this invention integrated in a CO.sub.2 emitting plant results in a global system of almost zero CO.sub.2 emissions, being able to meet the heat requirements of the global integrated system, minimizing the energy consumption of the CO.sub.2 capture system and conversion to bicarbonate. This optimized integration reduces the energy and economic penalty of integrating the CO.sub.2 capture system and conversion to value-added chemical.

The present invention presents an integrated system for the production of Na.sub.2HCO.sub.3 from CO.sub.2 captured from industries or power plants by means of a dry carbonate process starting from trona as raw material (Na.sub.2CO.sub.3NaHCO.sub.3-2H.sub.2O) and converting it into sodium carbonate (Na.sub.2CO.sub.3). The optimized integration of the unit allows coupling the system with renewable energies at medium temperatures below 220 C., such as biomass or medium temperature solar thermal energy systems. The use of this invention integrated in a CO.sub.2 emitting plant results in a global system of almost zero CO.sub.2 emissions, being able to meet the heat requirements of the global integrated system, minimizing the energy consumption of the CO.sub.2 capture system and conversion to bicarbonate. This optimized integration reduces the energy and economic penalty of integrating the CO.sub.2 capture system and conversion to value-added chemical.

Described herein are pharmaceutical compositions including a proton pump inhibitor and an antiparasitic drug. In some embodiments, the compositions can be formulated as a non-solid for oral administration. The compositions can be used to treat gastrointestinal conditions. Methods of treatment using the compositions are also described.

Described herein are pharmaceutical compositions including a proton pump inhibitor and an antiparasitic drug. In some embodiments, the compositions can be formulated as a non-solid for oral administration. The compositions can be used to treat gastrointestinal conditions. Methods of treatment using the compositions are also described.

A method for preparing alkali metal bicarbonate particles by crystallization from an alkali metal carbonate and/or bicarbonate solution with an additive present in the solution, chosen from among sulfates, sulfonates, polysulfonates, amines, hydroysultaines, polycarboxylates, polysaccharides, polyethers and ether-phenols, alkali metal hexametaphosphate, phosphates, sulfosuccinates, amidosulfonates, amine sulfonates, preferably chosen from among polysaccharides, and such that the additive is present in the solution at a concentration of at least 1 ppm and preferably at most 200 ppm.