The invention provides fuel mixtures containing biodiesel oil, glycerol, glycerol soluble compounds, surfactants and additives. The fuel mixtures are uniform, remain suspended in solution, and are resistant to phase separation. Upon combustion, the mixtures generate reduced CO, CO.sub.2, SOx, NOx and particulate matter emissions compared to petroleum fuels and offer improved engine performance over petroleum and water mixtures.

The coal-derived solid hydrocarbon particles are discrete particles of coal-derived carbonaceous matter having a particle size less than about 10 m that are substantially free of inherent or entrained mineral matter. The particles of have an average particle size in the range from 1 m to 8 m. The particles of coal-derived carbonaceous matter are milled to a size approximately the same as a size of coal-derived mineral matter inherent in the coal source to release inherent coal-derived mineral matter particles such that the particles of carbonaceous matter and the particles of mineral matter are discrete and separable solid particles. Following separation, less than 1.5 wt. % discrete coal-derived mineral matter particles are associated with the discrete particles of coal-derived carbonaceous matter. Particles of coal-derived solid hydrocarbon matter are blended with a gaseous or liquid hydrocarbon fuel to form a two-phase hydrocarbon fuel feedstock.

Hydrothermal conversion is performed on organic feedstocks that include solids, by forming a slurry of the feedstock in water and subjecting the slurry to hydrothermal conversion conditions. The hydrothermal conversion conditions may be sufficient to product a carbonized solid and/or liquefaction products. The size of solids (either or both of feedstock or carbonized solids produced in the process) is reduced by conducting a series of bubble-forming and bubble-collapsing cycles on the slurry.

The production carbonaceous feedstock material from waste containing carbon sources and the use thereof in gasification processes for hazardous emissions of greenhouse gases and sulphur are significantly minimized and enhanced reaction rates are described. A process for producing a carbonaceous feedstock material from waste containing carbon sources, including the steps consisting of: (i) introducing a source of biochar to a source of discard coal fines to form a bio-coal mixture; (ii) introducing a catalyst additive selected from the group consisting of a source of an alkali metal or a source of an alkaline earth metal to the bio-coal mixture; (iii) optionally, contacting the bio-coal mixture with a binder; and (iv) compacting the resulting mixture of step (ii) or (iii) to form one or more carbonaceous feedstock briquettes, the size of said briquettes having a dimension of at least 5 mm.

The invention relates to a material consisting of a preparation made from a mixture of ferrocene and an inert flameproof material such as plaster, the material being presented in the form of granules and being suitable for spreading over a hydrocarbon fire in a simple and rapid manner such that, under the effect of the heat from the fire, the ferrocene contained in the granulated material is diffused progressively and homogeneously in a vapor phase over the base of the flames, so as to optimize the combustion of the hydrocarbon and to reduce the emission of smoke and unwanted particles.

A gaseous combustible fuel includes a gaseous hydrocarbon fuel feedstock and solid fuel particles suspended in the gaseous hydrocarbon fuel feedstock. The solid fuel particles have a sufficiently small particle size so that they remain suspended during transportation. The hydrocarbon fuel feedstock may include natural gas, ethane, propane, butane, and gaseous derivatives and mixtures thereof. The solid fuel particles may include coal-derived solid carbonaceous matter. Other examples of solid fuel particles include biomass, refined bioproducts, and combustible polymer particles. The gaseous combustible fuel has an energy density at atmospheric pressure which is at least 25% greater than the volumetric energy density of the gaseous hydrocarbon fuel feedstock. Improvements in volumetric energy density of 50%, 100%, and even 500% are disclosed. The gaseous combustible fuel may be pressurized to a pressure in the range from 2 to 100 atmospheres.

The present invention concerns a suspension comprising carbonaceous material particles, an alkoxylated phenol surfactant, and an aqueous liquid phase providing a high stability to the suspensions over time. The invention also concerns a process for the production of said suspensions and methods for generating power comprising combustion of said suspensions, notably with appropriate devices.

An algae-based powdered fuel is configured to be fluidized in a gas stream. The algae-based powdered fuel is manufactured by drying an algae slurry to produce a powdered composition and then comminuting the powdered composition to produce the fuel. The algae-based powdered fuel can be combusted in a gas turbine to generate electricity and/or to propel an aircraft.

Fuel additive compositions include a plurality of metal nanoparticles and a carrier that is dispersible in a hydrocarbon fuel. The metal nanoparticles can be spherical-shaped and/or coral-shaped metal nanoparticles. The carrier can be liquid, gel or solid and can be readily miscible or soluble in a hydrocarbon fuel such as gasoline, diesel, jet fuel, or fuel oil. The carrier can be a solid carrier configured to allow the hydrocarbon fuel to dissolve the solid carrier in order to release and disperse the metal nanoparticles within the hydrocarbon fuel.

A slurry suspension is provided, which comprises (a) carbonaceous material particles having an average diameter D.sub.50 comprised between 0.1 m and 200 m; (b) an organic compound comprising at least one amine group; and (c) an organic phase.