TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Method: In transporting renewable fuel, generating the low density hydrogen fuel comprises applying waste heat recovered from an external energy source or heat generated from a renewable energy source. The method further comprises dissolving a hazardous contaminant in the high density hydrogen carrier to generate a liquid mixture that isolates the hazardous contaminant from an environment. The method also comprises applying heat to the liquid mixture to generate oxygenated fuel mixture with a ratio of hydrogen to carbon that is higher than the high density hydrogen carrier; transporting in a pipeline the hydrogen generated from the liquid mixture to a fourth location at a higher elevation than the third location without adding energy or pressure; applying heat to the high density hydrogen carrier to generate oxygenated fuel with a ratio of hydrogen to carbon that is higher than the high density hydrogen carrier; and transporting in a pipeline the hydrogen generated from the high density hydrogen carrier to a fourth location at a higher elevation than the third location without adding energy or pressure. Preferred Components: The high density hydrogen carrier comprises at least one of hydrocarbon, alcohol and ammonia. Hydrocarbon comprises at least one of methane and ethane, where the alcohol comprises at least one of methanol and ethanol. Carbon donor comprises carbon dioxide and the hydrogen donor comprises water. The liquid mixture controls a vapor pressure or availability of the vapor pressure. The at least one of a carbon donor, a nitrogen donor and an oxygen donor are harvested from industrial waste. Preferred Parts: The thermochemical reactor comprises a countercurrent heat exchanger to apply waste heat recovered from an external energy source or heat generated from a renewable energy source. The pipeline system further comprises a contaminant recovery system connected to the thermochemical reactor, the contaminant recovery system configured to harvest a hazardous contaminant; and dissolve the harvested hazardous contaminant in the high density hydrogen carrier to generate a liquid mixture that isolates the hazardous contaminant from an environment. Liquid mixture is transported in the second pipeline to the third location using at least one of pressure and kinetic energy generated by the liquid mixture. The pipeline system also comprises a second thermochemical reactor connected to the third location to dissociate the liquid mixture, using an anaerobic reaction, to generate an oxygenated fuel mixture with a ratio of hydrogen to carbon that is higher than the high density hydrogen carrier; a second countercurrent heat exchanger connected to the second thermochemical reactor to apply heat to the liquid mixture to generate the oxygenated fuel mixture; and a third pipeline connecting the second thermochemical reactor at a fourth location of a higher elevation than the third location without adding energy or pressure. EXAMPLE - No example given.