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