LOW TEMPERATURE SULFUR DIOXIDE PRETREATMENT
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United States of America Patent
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Issued Date -
Nov 12, 2020
app pub date -
Nov 9, 2018
filing date -
Nov 9, 2017
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Abstract
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.
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