A METHOD FOR NON-CATALYTIC DELIGNIFICATION OF BIOMASS INSIDE AN APPARATUS
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United States of America
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May 5, 2022
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Jan 13, 2020
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Jan 13, 2020
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Abstract
The present invention provides a method for non-catalytic delignification of biomass, without externally added catalyst, with a mixed solvent of oxygenated organic solvent and water in the presence of an oxidant, at moderate temperature and pressure. Further, the separation of delignified cellulose from liquid mixture is carried out at around equivalent process conditions. Low modified kappa number delignified cellulose is obtained after separation of a liquid mixture containing a mixed solvent, hemicelluloses, lignin and traces of miscellaneous compounds. Furthermore, the method has lower chemical consumption in the downstream process, ease of operation and robustness.
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