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Fig. 2 | Biotechnology for Biofuels

Fig. 2

From: Steam explosion pretreatment of softwood: the effect of the explosive decompression on enzymatic digestibility

Fig. 2

Steam explosion effect on biomass structure. Spruce wood chips after a steam pretreatment without (a) and with explosion (b). Shown are the dried screenings of the 6.7-mm sieve. Pretreatment conditions: log R 0 = 4.4 (T = 235 °C, t = 2.5 min), Δp explosion = 30 bar. c Weight-average particle size of spruce wood chips after steam pretreatments at different severities with and without explosion. Pretreatment conditions: T = 235 °C, t = 2.5–20 min, Δp explosion = 30 bar

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