TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The first gas stream is derived from the steam reforming of a natural gas stream comprising methane and at least 90% of the electrons available in the methane are conserved in the reformed gas produced by the steam reforming. A water stream, recovered from the step of conversion of the combined gas substrate to alcohol, passes to an evaporation unit associated with the carbohydrate to alcohol plant associated with it for sterilization of the water stream and removal of sodium to produce a treated water stream that supplies water to the carbohydrate to alcohol plant. The water stream recovered from an evaporation unit associated with from the carbohydrate to alcohol plant supplies make-up water to the step of conversion of the combined gas substrate to alcohol. The step (a) takes place in a bioreactor assembly continuously passes at least a portion the combined gas substrate and the menstruum through at least one membrane module while maintaining at least one of the modules at a ratio of electrons to carbon atoms in 5.2:1-6.8:1. The process (p1) comprises adding at least one of carbon monoxide, carbon dioxide and hydrogen to a substrate gas inflow of each module to obtain a desired range of electrons to carbon atoms, maintaining a desired alcohol concentration in each of the modules, withdrawing menstruum from modules and adding menstruum to modules; and continuously withdrawing a substrate depleted gas phase from at least one of the modules. The bioconversion of the gas substrate to alcohol converts at least 85 mol.% hydrogen and carbon oxides in the gas substrate. The steam reforming is performed in a steam reformer having at least one gas reforming section and at least one hotbox section and at least a portion of the depleted gas phase is passed to the hotbox section of the steam reformer. The reformed gas substrate is produced by the non-oxidative reforming of a methane containing gas that conserves at least 90%, preferably at least 95% electrons available from the methane. Preferred Components: The second gas stream comprises at least 40 mol.% carbon dioxide and combined gas substrate has a ratio of electrons to carbon at 5.5:1-6.5:1. The second gas stream comprises: renewable carbon and at least a portion of the carbon in the alcohol is from a renewable resource; or a carbon dioxide containing effluent from a carbohydrate to alcohol plant that converts carbohydrates to an ethanol product. The alcohol is at least one of ethanol (preferred), propanol, iso-butanol or n-butanol. 30-50% Carbon in the gas substrate is from renewable carbon. At least a portion of the combined gas substrate of step (b1) comprises reformed gas derived from steam reforming. The carbohydrate substrate comprises sugar. 20-70% Carbon oxides in the combined gas substrate comes from renewable carbon, the balance of the carbon oxides in the combined gas substrate comes from non-renewable carbon, and the ratio of electrons to carbon is 5.5:1-6.5:1, preferably 5.7:1-6.4:1. The reformed gas and renewable gas comprise at least 25 mol.% carbon dioxide, renewable gas has an electron to carbon ratio not greater than 0.1:1 to provide an overall gas substrate having an electron to carbon ratio at 5.5:1-6.5:1. The mole ratio of carbon dioxide to methane in the depleted gas phase is less than 0.2:1. 30-50% Carbon oxides are from the processing of corn to make alcohol. EXAMPLE - No suitable example given.