LOW TEMPERATURE SULFUR DIOXIDE PRETREATMENT
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A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a SO2 pretreatment within the temperature range 110°C-150°C. Good glucose yields have been achieved when the SO2 pretreatment is conducted for more than 90 minutes and when the total amount of SO2 available is greater than 20 wt% based on dry weight of lignocellulosic biomass. A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a SO 2 pretreatment within the temperature range 110°C-150°C. Good glucose yields have been achieved when the SO2 pretreatment is conducted for more than 90 minutes and when the total amount of SO2 available is greater than 20 wt% based on dry weight of lignocellulosic biomass.
