NOVELTY - Method for handling and removal of carbon dioxide (CO2) and/or production of carbon (C) in powder form, preferably nano carbon, comprises placing a composite C-containing material in a chamber, subjecting to microwaves in order to produce plasma, and separating plasma from CO2 as CO2-containing gases, which are fed into the chamber and led through the plasma zone, thus split elementary C and oxygen (O) are led out of the plasma zone directly to cooled surroundings and the temperature is below threshold value for re-binding of C and O.    USE - The method is useful for handling and removal of CO2 and/or production of C in powder form, preferably nano carbon. The composite material is useful for: the processing of plasma using microwave energy for destruction of CO2 and production of nano coal; the processing of plasma using microwave energy to separate and/or incinerate organic material and simultaneous destruction of CO2 and production of nano coal; processing plasma using microwave energy to recycle carbon and O2 in an energy production which includes gasification and/or use of synthesis gas; processing plasma using microwave energy for further utilization for destruction of CO2 from coal generating plants and/or gas generating plants; processing plasma for further utilization for destruction of CO2 from waste gas from propulsion of turbines, motors and machinery; processing plasma for reforming natural gas to hydrogen and C without forming CO2; and processing plasma for further utilization for destruction of CO2 from waste gas from fuel cells (all claimed).    ADVANTAGE - The method utilizes less energy and maintains the surrounding temperature constantly below the threshold temperature, while CO2 simultaneously appears in elementary components in the plasma zone. The method enables nano coal production of CO2 and permanent destruction of CO2 emission from energy producing combustion processes.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) preparing a composite material, comprising adding one or more metal compounds from main group I (alkaline metal) or II (earth alkaline metal) of the periodic table, preferably cesium (Cs), sodium, potassium preferably as hydroxide, carbonates or bicarbonates to carbon containing material, but where also compounds of silicon may be included as the only element not in main group I or II; and    (2) the composite material, comprising a mixture of one or more alkaline metals from main group I or II of the periodic table and a carbon-containing material.    DESCRIPTION OF DRAWING(S) - The figure shows feed of carbon-containing composite material.    Reactor (10)    Inlets (12, 14)    Outlet (18, 24)    High point-temperatures area (20)    Generator. (30)