The process 6, wherein an output of said bio catalytic reactor is provided to {HEAD ~ another bio catalytic reactor} to provide {TAIL ~ additional Ethanol} 
The process 6 , wherein an output of said bio catalytic reactor is provided to { HEAD ~ another bio catalytic reactor } to provide { TAIL ~ additional Ethanol }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL