The disclosure provides a gasification process for the production of a methane-rich syngas at temperatures exceeding 400 C. through the use of an alkali hydroxide MOH, using a gasification mixture comprised of at least 0.25 moles and less than 2 moles of water for each mole of carbon, and at least 0.15 moles and less than 2 moles of alkali hydroxide MOH for each mole of carbon. These relative amounts allow the production of a methane-rich syngas at temperatures exceeding 400 C. by enabling a series of reactions which generate H.sub.2 and CH.sub.4, and mitigate the reforming of methane. The process provides a methane-rich syngas comprised of roughly 20% (dry molar percentage) CH.sub.4 at temperatures above 400 C., and may effectively operate within an IGFC cycle at reactor temperatures between 400-900 C. and pressures in excess of 10 atmospheres.

The present invention relates to systems and processes for utilizing produced water and captured carbon dioxide to produce high-value products. The system includes a produced water processing system, a carbon capture system, an electrolyzer, and a conversion chamber. The electrolyzer includes a first chamber, a second chamber, and a semi-permeable membrane and first electrode in the first chamber and a second electrode in the second chamber. The first chamber receives treated saturated produced water. The second chamber is operated at a second operating pressure that is less than the first operating pressure and facilitates the passage of sodium ions across the membrane. A current is applied to the electrodes such that the first electrode functions as an anode and the second electrode functions as a cathode, producing hydrogen gas and sodium hydroxide in the second chamber and chlorine gas in the first chamber. The polarity of the electrodes and the flow of reagents into the first and second chambers and the flow of products out of the first and second chambers may be reversed.

The present invention relates to systems and processes for utilizing produced water and captured carbon dioxide to produce high-value products. The system includes a produced water processing system, a carbon capture system, an electrolyzer, and a conversion chamber. The electrolyzer includes a first chamber, a second chamber, and a semi-permeable membrane and first electrode in the first chamber and a second electrode in the second chamber. The first chamber receives treated saturated produced water. The second chamber is operated at a second operating pressure that is less than the first operating pressure and facilitates the passage of sodium ions across the membrane. A current is applied to the electrodes such that the first electrode functions as an anode and the second electrode functions as a cathode, producing hydrogen gas and sodium hydroxide in the second chamber and chlorine gas in the first chamber. The polarity of the electrodes and the flow of reagents into the first and second chambers and the flow of products out of the first and second chambers may be reversed.

A dry hydrogen production method includes drying sludge; producing a sludge mixture by mixing the dried sludge with an aqueous hydroxide solution and then drying a mixture or mixing the dried sludge with hydroxide powder; introducing the sludge mixture into a reactor; producing a reaction product by heating the sludge mixture in the reactor without supplying water or vapor; separating the reaction product into a gas effluent and a solid effluent through gas-solid separation; and producing a gas product from the gas effluent.

A dry hydrogen production method includes drying sludge; producing a sludge mixture by mixing the dried sludge with an aqueous hydroxide solution and then drying a mixture or mixing the dried sludge with hydroxide powder; introducing the sludge mixture into a reactor; producing a reaction product by heating the sludge mixture in the reactor without supplying water or vapor; separating the reaction product into a gas effluent and a solid effluent through gas-solid separation; and producing a gas product from the gas effluent.

The present disclosure is directed to systems and methods of producing lithium carbonate. The lithium carbonate can be produced by contacting a lithium precursor with a carbon dioxide gas. The lithium carbonate produced from this method can include micron-sized lithium carbonate particles with nano-sized lithium carbonate particles coated on a surface of the micron-sized lithium carbonate particles.

The present disclosure is directed to systems and methods of producing lithium carbonate. The lithium carbonate can be produced by contacting a lithium precursor with a carbon dioxide gas. The lithium carbonate produced from this method can include micron-sized lithium carbonate particles with nano-sized lithium carbonate particles coated on a surface of the micron-sized lithium carbonate particles.

A method including reacting carbon dioxide from exhaust gas produced at a wellsite to produce a solid metal carbonate, and microwaving the solid metal carbonate to produce recovered carbon dioxide and solid metal alkaline. A system for carrying out the method is also provided.

A method including reacting carbon dioxide from exhaust gas produced at a wellsite to produce a solid metal carbonate, and microwaving the solid metal carbonate to produce recovered carbon dioxide and solid metal alkaline. A system for carrying out the method is also provided.

A method including reacting carbon dioxide from exhaust gas produced at a wellsite to produce a solid metal carbonate, and microwaving the solid metal carbonate to produce recovered carbon dioxide and solid metal alkaline. A system for carrying out the method is also provided.