PROCESS FOR PRETREATMENT OF THE LIGNOCELLULOSIC BIOMASS WITH A HYDRATED INORGANIC SALT MAKING IT POSSIBLE TO OBTAIN A CELLULOSIC FRACTION AND A HEMICELLULOSIC FRACTION
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United States of America Patent
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Issued Date -
Jan 29, 2015
app pub date -
Dec 11, 2012
filing date -
Jan 18, 2012
priority date (Note) -
Abandoned
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Abstract
A method for pretreating lignocellulosic biomass by: a) acid hydrolysis with an acid solution resulting in a liquid fraction and a solid fraction, b) separating the solid fraction and the liquid fraction, c) drying the solid fraction, d) firing the dried solid fraction in a medium comprising at least one hydrated inorganic salt to obtain a solid fraction and a liquid fraction, e) separating the solid fraction and the liquid fraction obtained in d), f) optionally, treating said solid fraction obtained in e), g) enzymatic hydrolysis of said solid fraction obtained in e) and/or f), and wherein at least a portion of the liquid fraction obtained in b) is used to grow microorganisms which produce the enzymes necessary for the enzymatic hydrolysis of g).
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