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Table 5 Biobased sorbents for liquid phase drying of ethanol and butanol

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

Adsorbent-adsorbate Adsorbent surface area (m2/g) Reaction conditions/system Water adsorption capacity (mol/g) Separation factor Initial and final alcohol concentration (%) Refs.
Barley straw/ethanol 1.08 Room temperature, 130 rpm, 4 g in 150 ml liquid 0.43 6.15 5–90 to pure Sun et al. (2007)
Wheat straw/ethanol 0.73 Room temperature, 130 rpm, 4 g in 150 ml liquid 0.22 6 5–90 to pure Sun et al. (2007)
Crab shells of Ucides cordatus/ethanol NA Room temperature, 130 rpm, 4 g in 150 ml liquid 0.02 4.5 5–90 to pure Sun et al. (2007)
Barley straw (raw-untreated)/ethanol 2 m2/g Room temp.; 150 rpm 0.50   78 to 83 Yan and Niu (2017b)
Barley straw (pretreated using H3PO4 in microwave)/ethanol 105–1314 m2/g Room temp.; 150 rpm 0.63   78 to 89 Yan and Niu (2017b)
Miscanthus (raw)/ethanol 0.43–0.74 Room temperature; 24 h at 160 rpm. 0.21–0.50 1.5–3.0   Dhabhai et al. (2017)
Miscanthus (pretreated)/ethanol 0.71–0.96 Room temperature; 24 h at 160 rpm 0.16–0.26    Dhabhai et al. (2017)
Canola meal/ethanol NA Room temperature, 130 rpm, 4 g in 150 ml liquid 0.13 2.5–4.0 4–90 to pure Ranjbar et al. (2013)
Canola meal (raw; untreated)/butanol 13.2 Room temperature; 150 rpm; 0.43–1.18 mm particle size 0.24–0.31   5–90 to 19.8–96 Dhabhai et al. (2017)
Canola meal (pretreated; using H2SO4 in a microwave)/butanol 147.5 Room temperature; 0.43–1.18 mm particle size; 150 rpm 0.11–0.13   5–90 to 23–98 Dhabhai et al. (2018)