The present invention discloses a single stage energy efficient process for production of hydrogen enriched/mixed gas at low temperature. More particularly, the present invention discloses a single stage energy efficient process for production of hydrogen enriched compressed natural gas (CNG) or LPG or biogas at low temperature.

A hydrocarbon production system capable of efficiently producing hydrocarbon containing a high-calorie gas by securing hydrogen and carbon monoxide required for hydrocarbon synthesis using water and carbon dioxide as raw materials is obtained. The hydrocarbon production system includes an electrolytic reaction unit that converts water and carbon dioxide into hydrogen and carbon monoxide through an electrolytic reaction, a catalytic reaction unit that converts a product generated by the electrolytic reaction unit into hydrocarbon through a catalytic reaction, and branch paths and that branch a portion of an outlet component of the catalytic reaction unit.

A method, a system, and an apparatus of certain embodiments are provided to recover water and carbon dioxide from combustion emissions. The recovery includes, among other things, electrolysis and carbon dioxide capture in a suitable solvent. The recovered water and carbon dioxide are subject to reaction, such as a catalytic methanation reaction, to generate at least methane.

A method of compressing carbon dioxide, CO2, including a) generating a stream of high-pressure oxygen gas and a stream of high-pressure hydrogen gas using a high-pressure electrolyser, b) feeding a reciprocating positive displacement pump comprising a reciprocating member, with a stream of CO2, and with the stream of high-pressure oxygen gas as drive gas to actuate the reciprocating member and compress the CO2 to obtain a stream of high-pressure CO2.

An electrolyte as an additive for internal combustion engines for a production of hydrogen concentrations by a hydrogen generation device. A method of making the electrolyte includes weighing sodium borohydride, sodium hydroxide, and potassium hydride; adding the sodium hydroxide and the potassium hydride to deionized water to make a first composition; mixing the first composition; adding the sodium borohydride to the first composition to make a second composition; adding more deionized water to the second composition to make a basic electrolyte solution; diluting the basic electrolyte solution by adding more deionized water to make a third composition; and adding approximately 3 to 10 mL of sodium borohydride approximately 4.4008 M to the third composition to make an electrolyte having a final concentration sodium borohydride of approximately 0.05947 M.

A methane (CH.sub.4) gas is synthesized from carbon dioxide (CO.sub.2) and hydrogen (H.sub.2) using catalyst-dielectric barrier discharge (DBD) plasma at room temperature and atmospheric pressure. In the method and apparatus for synthesizing methane gas of the invention, methane (CH.sub.4) gas, which is synthetic natural gas, can be effectively synthesized only from carbon dioxide (CO.sub.2) and hydrogen (H.sub.2) using DBD plasma at room temperature and atmospheric pressure, and also, additional heating and pressurization devices are not used during the methane gas synthesis process, thus reducing production costs and realizing high-value-added processing due to the absence of risks during the processing.

Traditional residential and industrial furnace systems convert the chemical energy of liquid and gas fuels into thermal energy and, in some earlier applications, also into electric energy. This process is driven by a burner specifically designed and built. Often these systems operate at high temperatures, high pressures and relatively lower efficiency levels. The field of present invention generally relates to furnaces that combine the fuel production to the both thermal either electrical energy production. More particularly, the present invention produces a combustible gas that, within the internal workings of the present invention, and can efficiently be burned without the production of high levels of pollutants, at relatively lower temperatures and pressures. The foregoing characteristics, along with the limited size of the elements needed to practice the present invention, make it conducive for use as and in connection with, among other things, residential furnaces and other heating systems, including, for example, heat exchangers and residential hot water tanks. In short, the present invention involves the production of a combustible fuel gas, thermal and electric energy. This production is accomplished through the interconnected use of water electrolysis, catalysts, storage means, regulation, and mean of reusing materials to increase production efficiencies.

A method of synthesizing fuel from an aqueous solution includes pumping the aqueous solution, containing dissolved inorganic carbon, from a body of water into a carbon extraction unit. The method further includes extracting the dissolved inorganic carbon from the aqueous solution to create CO.sub.2 by changing a pH of the aqueous solution in the carbon extraction unit. The CO.sub.2 derived in the carbon extraction unit is received by a fuel synthesis unit, and the CO.sub.2 is converted into fuel including at least one of a hydrocarbon, an ether, or an alcohol using the fuel synthesis unit.

The invention integrates electromethanogenesis, which uses electric energy to produce fuel, with a method to capture and recycle the carbon dioxide generated when the fuel is used to release energy.

A system and method for converting waste and secondary materials into synthesis gas (syngas) through the use of a molten metal bath gasifier for the initial breakdown of waste feeds and an A/C plasma reactor for complete dissociation of waste feeds into syngas, and an anaerobic digester. The system includes a heat recovery and steam power generation process for the production of electricity. The system produces a net output of electricity above plant load sufficient for the co-production of renewable Hydrogen and Oxygen. The process does not require the use of fossil fuels or fossil feedstocks during normal operations, and it eliminates combustion produced stack emissions or landfill residuals.