A process for the production of power using a combination of a partial oxidation (POX) system and a power production system (PPS), the process comprising: combining a solid or liquid fuel and oxygen in a POX reactor under conditions sufficient to partially oxidize the fuel and form a POX stream comprising a fuel gas at a first temperature; removing from the POX stream comprising the fuel gas at least a portion of any solid components or gaseous components that do not form part of the fuel gas; processing a portion of the POX stream comprising the fuel gas in a carbonyl sulfide (COS) hydrolysis reactor adapted to convert COS to H 2 S; cooling the POX stream comprising the fuel gas in a POX heat exchanger to a second, lower temperature; purifying the POX stream comprising the fuel gas by removing at least a portion of any liquid water and acid gases therefrom and thus forming a stream of the fuel gas; compressing the stream of the fuel gas to a pressure of about 12 MPa or greater; combusting the stream of the fuel gas in a PPS combustor to form a combustion product stream at a pressure of at least about 10 MPa and a temperature of at least about 800 °C; expanding the combustion product stream across a PPS turbine to generate power and form an expanded PPS combustion product stream; passing the expanded PPS combustion product stream through a PPS recuperator heat exchanger and thereby withdrawing heat from the PPS combustion product stream and forming a cooled PPS combustion product stream; removing at least a portion of one or more impurities from the cooled PPS combustion product stream to form a recycle CO 2 stream; and pressurizing the recycle CO 2 stream in a PPS compressor to form a compressed recycle CO 2 stream. combining a solid or liquid fuel and oxygen in a POX reactor under conditions sufficient to partially oxidize the fuel and form a POX stream comprising a fuel gas at a first temperature; removing from the POX stream comprising the fuel gas at least a portion of any solid components or gaseous components that do not form part of the fuel gas; processing a portion of the POX stream comprising the fuel gas in a carbonyl sulfide (COS) hydrolysis reactor adapted to convert COS to H 2 S; cooling the POX stream comprising the fuel gas in a POX heat exchanger to a second, lower temperature; purifying the POX stream comprising the fuel gas by removing at least a portion of any liquid water and acid gases therefrom and thus forming a stream of the fuel gas; compressing the stream of the fuel gas to a pressure of about 12 MPa or greater; combusting the stream of the fuel gas in a PPS combustor to form a combustion product stream at a pressure of at least about 10 MPa and a temperature of at least about 800 °C; expanding the combustion product stream across a PPS turbine to generate power and form an expanded PPS combustion product stream; passing the expanded PPS combustion product stream through a PPS recuperator heat exchanger and thereby withdrawing heat from the PPS combustion product stream and forming a cooled PPS combustion product stream; removing at least a portion of one or more impurities from the cooled PPS combustion product stream to form a recycle CO 2 stream; and pressurizing the recycle CO 2 stream in a PPS compressor to form a compressed recycle CO 2 stream. <EOS>