TECHNOLOGY FOCUS - BIOLOGY - Preferred Components: The fermentation zone contains microorganisms selected from Clostridium ragsdalei, Butyribacterium methylotrophicum, Clostridium ijungdahlii, and/or Clostridium carboxidivorans.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: In the process (P1), the fermentation zone produces a fermentation stream comprising an ethanol containing stream and the column overhead stream passes to a reaction zone for the production of ethylene. The fermentation zone converts syngas components into ethanol. The neutralization product comprises sodium acetate and the bottoms stream mixes with an aqueous fermentation broth to supply sodium acetate to the fermentation zone. The addition of sodium hydroxide neutralizes the column overhead to a pH of 6. The separation column comprises a distillation column, at least a portion of the fermentation stream enters the distillation column and the columns bottoms stream is recovered from the distillation column. The fermentation stream enters a stripping column, the stripping column overhead passes to the distillation column and at least a portion of the distillation column bottoms stream and the stripping column bottoms stream are combined and returned to the fermentation zone. The portion of the separation column includes a reflux condenser and the additive is combined with the condensate reflux to the column to provide additive to the upper column fraction. In the process (P2), at least a portion of the column overhead stream passes to a catalytic dehydration zone for the production of ethylene. The neutralization product comprises sodium acetate and a sodium hydroxide is added in sufficient quantity as the additive to neutralize the column overhead to a pH of 6. The separation column comprises a distillation column, at least a portion of the fermentation stream enters the distillation column, the columns bottoms stream is recovered from the distillation column, and a column overhead having an ethanol concentration of at least 70 wt.% is withdrawn from the distillation column. The fermentation stream enters a stripping column, the stripping column overhead passes to the distillation column and at least a portion of the distillation column bottoms stream and the stripping column bottoms stream are combined and returned to the fermentation zone. The dehydration zone contacts the alcohol stream with a catalyst selected from alumina or alumina-silica. In the process (P3), the fermentation stream enters a stripping column, the stripping column overhead passes to the distillation column, at least a portion of the distillation column bottoms stream and the stripping column bottoms stream are combined and returned to the fermentation zone and a column overhead having an ethanol concentration at least 70 wt.% is withdrawn from the distillation column. Preferred Components: The fermentation stream includes acetic acid and the neutralization additive comprises sodium hydroxide. The fermentation zone produces a fermentation stream comprising water, ethanol (2-5 wt.%), acetate (at least 0.3 wt.%) and free acetic acid (at least 1 wt.%); the column overhead stream comprises ethanol (70-80 wt.%) and is relatively free of organic acid; and the reaction zone comprises a catalytic dehydration zone. The neutralization product comprises sodium acetate. EXAMPLE - No suitable example is given.