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Table 6 Biobased sorbents for vapor phase drying of ethanol, butanol, and other alcohols

From: Agricultural byproducts-based biosorbents for purification of bioalcohols: a review

Adsorbent-adsorbate Adsorbent surface area (m2/g) Reaction conditions/system Water adsorption capacity Separation factor Initial and final alcohol concentration (%) Refs.
Bleached wood pulp/ethanol NA Vapor phase 0.386 g/g   90–97 to 99.5 Benson and George (2005)
Oak sawdust/ethanol NA Vapor phase 0.285 g/g 90–97 to 99.5 Benson and George (2005)
Kenaf core/ethanol NA Vapor phase 0.200 g/g 90–97 to 99.5 Benson and George (2005)
ZSG-1 (startch based)/ethanol NA Vapor phase; 81–89 °C 0.20–0.23 g/g   90 to 99.7 Wang et al. (2010)
Cassava/ethanol NA Vapor phase, 60 g adsorbent for 500 ml alcohol vapor 0.053 g/g   80 to 98.1 Rattanaphanee et al. (2013)
Wheat flour/ethanol NA Vapor phase; 50–90 °C   ~ 500 Vareli et al. (2000)
Wheat straw/ethanol NA Vapor phase; 50–90 °C   ~ 650   Vareli et al. (2000)
Corn starch/ethanol 0.82–0.98 m2/g Vapor phase; 90 °C 0.098–0.19 g/g   92 to 95–99 Qintero and Cardona (2009)
Upright elephant ear/ethanol 2.17–2.87 m2/g Vapor phase; 90 °C 0.04–0.06 g/g   92 to 98.72 Qintero and Cardona (2009)
Cassava/ethanol 0.50–0.66 m2/g Vapor phase; 90 °C 0.06–0.08 g/g   92 to 97.4–99.4 Qintero and Cardona (2009)
Canola meal/ethanol NA Vapor phase; 85 °C, 216 kPa; 0.43–1.18 mm 0.013–0.025 g/g 1.6–1.8 75–92 to > 99 Baylak et al. (2012)
Corn meal/ethanol 153.55 m2/g Vapor phase; 82–100 °C 0.0135–0.20 g/g 8.88–33.85   Chang et al. (2006)
Corn meal/ethanol NA Vapor phase; 82–100 °C 0.01–0.068 g/g 8.88–22.79 85 to 93.8 Chang et al. (2006)
Corn meal/ethanol NA Vapor phase; 87 °C and particle size of 60–100 mesh 0.014–0.025 g/g   95 to 99.5 (Hu and Xie 2001)
Palm stone/ethanol 350–400 m2/g Vapor phase 0.125 g/g    Al-Asheh et al. (2004)
Canola meal/ethanol NA Vapor phase; 90–110 °C and 136–243 kPa. 0.01–0.08 2.37–2.78 80–95 to > 99% Ranjbar et al. (2013)
Canola meal/butanol NA Vapor phase; 95–111 °C; 135–201 kPa; flow rate 1.5–3 ml/min 0.02–0.64 g/g 0.40–3.22 ~ 55 to > 99 Jayaprakash et al. (2017)
ZSG-1 (startch based)/isopropanol 127 m2/g Vapor phase; 88–92 °C   545 90–98 to pure Wu et al. (2015)
Cassava/isopropanol NA Vapor phase, 60 g adsorbent for 500 ml alcohol vapor 0.119 g/g   80–98.1 Rattanaphanee et al. (2013)
Cassava/n-propanol NA Vapor phase, 60 g adsorbent for 500 ml alcohol vapor 0.109 g/g   65 to 86.2 Rattanaphanee et al. (2013)