A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; followed by 2) dispersion of the agglomerates in a second hydrophobic liquid to release the water trapped within the agglomerates along with the entrained hydrophilic particles.

Provided herein is a process for improving the heating value of a cellulosic waste material. The process includes the steps of treating the cellulosic waste material with an acid solution, recovering heat produced by treating the cellulosic waste material, and filtering the treated cellulosic waste material to produce a filter cake. The disclosure also relates to a system for implementing the process.

Provided herein is a process for improving the heating value of a cellulosic waste material. The process includes the steps of treating the cellulosic waste material with an acid solution, recovering heat produced by treating the cellulosic waste material, and filtering the treated cellulosic waste material to produce a filter cake. The disclosure also relates to a system for implementing the process.

The present invention concerns a method for the removal of inorganic components such as potassium, sodium, chlorine, sulfur, phosphorus and heavy metals, from biomass of rural or forest or urban origin or even mixture of different origin biomasses, from low quality coals such as peat, lignite and sub-bituminous/bituminous coals, from urban/industrial origin residues/wastes, which are possible to include as much organic>5% weightas inorganic<95% weightcharge and from sewage treatment plant sludges. The desired goal is achieved with the physicochemical treatment of the raw material. The method can also include the thermal treatment, which can precede or follow the physicochemical one. The application of the thermal treatment depends on the nature and the particular characteristics of each raw material as well as on the feasibility analysis of the whole process in order to determine the optimization point in each case.

The present invention concerns a method for the removal of inorganic components such as potassium, sodium, chlorine, sulfur, phosphorus and heavy metals, from biomass of rural or forest or urban origin or even mixture of different origin biomasses, from low quality coals such as peat, lignite and sub-bituminous/bituminous coals, from urban/industrial origin residues/wastes, which are possible to include as much organic>5% weightas inorganic<95% weightcharge and from sewage treatment plant sludges. The desired goal is achieved with the physicochemical treatment of the raw material. The method can also include the thermal treatment, which can precede or follow the physicochemical one. The application of the thermal treatment depends on the nature and the particular characteristics of each raw material as well as on the feasibility analysis of the whole process in order to determine the optimization point in each case.

A method for desulfurization and dezincification of high-sulfur coal includes the steps of passing tap water into a high oxidation reduction electrocatalytic water equipment to reduce the pH value to 1-2, mixing the pH value 1-2 acid electrocatalytic water thus obtained with the high-sulfur coal, and heating the mixture to let H.sup.+ in the acid electrocatalytic water be reacted with sulfur and nitrogen in the high-sulfur coal to cause generation of hydrogen sulfide gas and ammonia where the volatilization of water vapor effectively removes the sulfur and nitrogen in the high-sulfur coal and the hydrogen sulfide and ammonia gases thus generated are collected.

The present disclosure provides systems and methods for producing biocarbon. In particular, the disclosure provides systems and methods for producing biocarbon from biomass using supercritical CO2 extraction to reduce impurities.

The present disclosure provides systems and methods for producing biocarbon. In particular, the disclosure provides systems and methods for producing biocarbon from biomass using supercritical CO2 extraction to reduce impurities.

Provided are systems and methods for propulsion and powering systems using recyclable metallic fuels. The method includes capturing fuel products, including a metal oxide and unburnt fuel from combustion of a metallic fuel, storing the unburnt metallic fuel and the fuel products to generate power and/or thrust, and recycling the metal oxide to recreate the metallic fuel and/or byproducts. A system for propulsion and power generation using a metallic fuel includes a combustion chamber for combusting the metallic fuel to provide propulsion, a reaction chamber for generating electricity and thermal power using heat from unburnt metallic fuel and fuel products, a storage system for capturing the unburnt metallic fuel and the fuel products and at least one recycling system for directing the captured unburnt metallic fuel and/or the fuel products to the combustion chamber and/or the reaction chamber.

Provided are systems and methods for propulsion and powering systems using recyclable metallic fuels. The method includes capturing fuel products, including a metal oxide and unburnt fuel from combustion of a metallic fuel, storing the unburnt metallic fuel and the fuel products to generate power and/or thrust, and recycling the metal oxide to recreate the metallic fuel and/or byproducts. A system for propulsion and power generation using a metallic fuel includes a combustion chamber for combusting the metallic fuel to provide propulsion, a reaction chamber for generating electricity and thermal power using heat from unburnt metallic fuel and fuel products, a storage system for capturing the unburnt metallic fuel and the fuel products and at least one recycling system for directing the captured unburnt metallic fuel and/or the fuel products to the combustion chamber and/or the reaction chamber.