Abstract

A process to extract carbon from hydrophobic waste comprises: combining the hydrophobic waste with an oxide of an active metal to form a storable, moisture-resistant feedstock for high-temperature processing; heating the feedstock in a furnace to yield an effluent gas entraining a carbide of the active metal; cooling the effluent gas entraining the carbide of the active metal; introducing nitrogen into the cooled effluent gas entraining the carbide of the active metal, to yield a cyanamide of the active metal and elemental carbon; and acidically hydrolyzing the cyanamide of the active metal to yield a cyanamide compound and a salt of the active metal.

IPC Classes  ?

• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
• C01C 3/18 - Calcium cyanamide
• C07C 277/02 - Preparation of guanidine or its derivatives, i.e. compounds containing the group the singly-bound nitrogen atoms not being part of nitro or nitroso groups of guanidine from cyanamide, calcium cyanamide or dicyandiamides
• C07C 279/28 - Derivatives of guanidine, i.e. compounds containing the group the singly-bound nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of guanidine groups bound to cyano groups, e.g. cyanoguanidines, dicyandiamides