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

Figure 4

Adsorption isotherms of water at same adsorbents in various temperatures. (a) PVA/Zeo/AC 1 : 1 : 1; (b) PVA/Zeo/AC 1 : 1 : 0.75; (c) PVA/Zeo/AC 1 : 1 : 0.5; (d) PVA/Zeo/AC 1 : 1 : 0.25; (e) PVA/Zeo/AC 1 : 1 : 0. , at 22°C; , at 30°C; ■, at 40°C; , Langmuir.

(a)

(b)

(c)

(d)

(e)