Research Article
Water Removal from an Ethanol-Water Mixture at Azeotropic Condition by Adsorption Technique
Table 1
Physical property of adsorbent.
| | Specification | Zeolite 4A | Zeolite 3A | Silica gel |
| | Molecular formula | Na12(AlO2)12(SiO2)12 × H2O | Na12(AlO2)12(SiO2)12 × H2O | SiO2 | | Particle size (mm) | 1.6 | 1.4 | 3.2 | | Bulk density (g/cm3) | 0.721 | 0.65 | 0.75 | | Pore diameter 0A) | 4 | 2.99 | 13 | | Pore volume (Cm3/g) | 0.45 | 0.597 | 0.625 | | Porosity (%) | 0.55 | 0.61 | 0.8 | | Moisture (wt %) | 1.21 | 1.15 | 3.0 | | Adsorption capacity as g H2O/100 g zeolite | 23.0 | 24 | 27.0 | | Efficiency (%) | 92 | 95 | 68 | | pH (5% slurry) | 9.5 | 8.4 | 6.5 |
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