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Two‐Step Autohydrolysis Pretreatment: Towards High Selective Full Fractionation of Wheat Straw
Author(s) -
Conrad Marc,
Smirnova Irina
Publication year - 2020
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202000056
Subject(s) - furfural , chemistry , lignocellulosic biomass , fractionation , lignin , pulp and paper industry , degradation (telecommunications) , yield (engineering) , straw , leaching (pedology) , biomass (ecology) , hydrolysis , waste management , chromatography , catalysis , organic chemistry , environmental science , agronomy , materials science , inorganic chemistry , telecommunications , biology , computer science , soil science , engineering , metallurgy , soil water
Pretreatment is necessary to increase the enzymatic digestibility of lignocellulosic biomass. Here, degradation reactions of solubilized pentoses to furfural and others are undesired regarding the reduced product yield and increasing downstream processing efforts. In this work, the use of the unit operation configuration was successfully shown to reduce degradation reactions. In the used two‐step autohydrolysis pretreatment, the reaction is stopped before degradation takes place. The pentoses are removed by water leaching to make them unavailable for degradation in a second autohydrolysis treatment. The overall sugars yield is increased, and the furfural formation is decreasing while maintaining the high lignin purity using the two‐step autohydrolysis pretreatment.