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Odor‐Free Lignin from Lignocellulose by Means of High Pressure Unit Operations: Process Design, Assessment and Validation
Author(s) -
Reynolds Wienke,
Baudron Victor,
Kirsch Christian,
Schmidt Lisa M.,
Singer Hannah,
Zenker Lilia,
Zetzl Carsten,
Smirnova Irina
Publication year - 2016
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.201600005
Subject(s) - lignin , odor , chemistry , supercritical fluid , pulp and paper industry , straw , enzymatic hydrolysis , extraction (chemistry) , hydrolysis , chromatography , organic chemistry , engineering , inorganic chemistry
In this work a process for the production of odor‐free lignin from wheat straw using solely water, enzymes and CO 2 is described. Wheat straw pellets are pretreated by liquid hot water and enzymatic hydrolysis in a pilot plant with a capacity of 40 L, which enables the production of 3 – 4 kg of Aquasolv lignin per batch. Dried lignin samples are further treated using supercritical CO 2 , resulting into extraction of a large number of odorous free fatty acids and volatile organic compounds. All process steps can be sequentially conducted in a fixed‐bed via different sustainable solvents in a throughput regime.