NOVELTY - Method for converting carbonaceous feedstock into chemical product having higher value than the carbonaceous feedstock involves introducing carbonaceous feedstock into plasma reactor having plasma torch to generate synthetic gas mixture having specific composition; introducing synthetic gas mixture into microbial bioreactor to form chemical product; varying the synthetic gas mixture based on changing needs of microbial bioreactor, where conditions in plasma reactor are controlled to vary composition of synthetic gas mixture; and collecting chemical product produced by bioreactor.    USE - For converting carbonaceous feedstock such as carbon dioxide emission into chemical product selected from ethanol; butanol; higher alcohols; acetate; pharmacological compound; pharmacologically active compound; or amino acid (preferably ethanol and acetate) (claimed), where the amino acids produced can be used to produce pharmaceuticals as well as other chemical products.    ADVANTAGE - The method can rapidly adjust both the quantity and quality of synthetic gas mixture being produced in response to changes in downstream microbial digesters. Reducing the output of the plasma reactor to match the demand required in the digester increases system efficiency. Also changes in the carbonaceous feedstock can be accommodated by changing the plasma torch operating conditions and by changing the input gases introduced into the plasma torch to enable synthetic gas mixture in the desired quantity and quality to be produced, so that the composition and quantity of the synthetic gas mixture can be tailored to the needs of the digester. The process requires modest capital investment in the plasma reactor and digester, where the operating costs include the acquisition of a carbonaceous feedstock such as a low value feedstock or carbon waste or biomass and the electrical power required to operate the torch.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for system for converting carbonaceous feedstock such as carbon dioxide emissions and process material into chemical product comprising plasma reactor to generate synthetic gas, where plasma reactor is controlled to generate synthetic gas mixture having specific composition; microbial digester configured to convert synthetic gas mixture into chemical product; and unit for monitoring conditions in the microbial digester to provide feedback for controlling plasma reactor so that the specific composition of synthetic gas mixture is appropriate for converting synthetic gas mixture into the chemical product.    DESCRIPTION OF DRAWING(S) - The figure shows functional block diagram for basic system for converting carbonaceous feedstock into chemical product.