TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: In the process (P1), the stream comprises a predominant amount of methane; a char is formed in the step of reacting, and the char is removed from the gasifying reactor and sent to a catalyst recovery and recycle process, where the gasification catalyst comprises gasification catalyst recycled from the catalyst recovery and recycle process. In the process (P2), the first carbonaceous feedstock and second carbonaceous feedstock are contacted separately with an aqueous solution comprising at least a portion of the gasification catalyst to form first and second slurries; the first and second slurries are dewatered separately to form first and second catalyst-loaded wet cakes; and the first and second catalyst-loaded wet cakes are mixed to form the mixture. The first and second catalyst-loaded wet cakes are separately thermally treated to form first and second dry particulates; and the first and second dry particulates are mixed to form the mixture. The first carbonaceous feedstock and the second carbonaceous feedstock are mixed to form a blend; the blend is contacted with an aqueous solution comprising at least a portion of the gasification catalyst to form slurry; and the slurry is dewatered to form a catalyst-loaded wet cake which is the mixture. The first carbonaceous feedstock is contacted with an aqueous solution comprising at least a portion of the gasification catalyst to form slurry; the slurry is dewatered to form a catalyst-loaded wet cake; and the catalyst-loaded wet-cake is mixed with the second carbonaceous feedstock to form the mixture. The second carbonaceous feedstock is contacted with an aqueous solution comprising at least a portion of the gasification catalyst to form slurry; the slurry is dewatered to form a catalyst-loaded wet cake; and the catalyst-loaded wet-cake is mixed with the first carbonaceous feedstock to form the mixture. The first carbonaceous feedstock and the second carbonaceous feedstock are mixed to form the mixture. Preferred Components: The gasification catalyst is loaded on at least one of the first carbonaceous feedstock and the second carbonaceous feedstock. The alkali metal comprises potassium and/or sodium (preferably potassium). The biomass char comprises all of the gasification catalyst. The second carbonaceous feedstock is a non-biomass. EXAMPLE - No suitable example given.