Structured Polyvinyl Alcohol/Zeolite/Carbon Composites Prepared Using Supercritical Fluid Extraction Techniques as Adsorbent for Bioethanol Dehydration

Figure 7

Ethanol concentration vs. time for individual adsorbent (a) at same temperature and different individual adsorbent (■, Zeo at 22°C; , AC at 22°C; PVA at 22°C) and (b) at zeolite individual adsorbent and different temperatures (, 22°C; , 30°C; , 40°C).

(a)

(b)