Properties important for solid–liquid separations change during the enzymatic hydrolysis of pretreated wheat straw
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Properties important for solid–liquid separations change during the enzymatic hydrolysis of pretreated wheat straw. / Weiss, Noah Daniel; Felby, Claus; Thygesen, Lisbeth Garbrecht.
I: Biotechnology Letters, Bind 40, Nr. 4, 2018, s. 703-709.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Properties important for solid–liquid separations change during the enzymatic hydrolysis of pretreated wheat straw
AU - Weiss, Noah Daniel
AU - Felby, Claus
AU - Thygesen, Lisbeth Garbrecht
PY - 2018
Y1 - 2018
N2 - Objectives The biochemical conversion of lignocellulosicbiomass into renewable fuels and chemicalsprovides new challenges for industrial scale processes.One such process, which has received little attention,but is of great importance for efficient productrecovery, is solid–liquid separations, which may occurboth after pretreatment and after the enzymatichydrolysis steps. Due to the changing nature of thesolid biomass during processing, the solid–liquidseparation properties of the biomass can also change.The objective of this study was to show the effect ofenzymatic hydrolysis of cellulose upon the waterretention properties of pretreated biomass over thecourse of the hydrolysis reaction.Results Water retention value measurements, coupledwith 1H NMR T2 relaxometry data, showed anincrease in water retention and constraint of water bythe biomass with increasing levels of cellulosehydrolysis. This correlated with an increase in thefines fraction and a decrease in particle size, suggestingthat structural decomposition rather than changesin chemical composition was the most dominantcharacteristic.Conclusions With increased water retained by theinsoluble fraction as cellulose hydrolysis proceeds, itmay prove more difficult to efficiently separatehydrolysis residues from the liquid fraction withimproved hydrolysis
AB - Objectives The biochemical conversion of lignocellulosicbiomass into renewable fuels and chemicalsprovides new challenges for industrial scale processes.One such process, which has received little attention,but is of great importance for efficient productrecovery, is solid–liquid separations, which may occurboth after pretreatment and after the enzymatichydrolysis steps. Due to the changing nature of thesolid biomass during processing, the solid–liquidseparation properties of the biomass can also change.The objective of this study was to show the effect ofenzymatic hydrolysis of cellulose upon the waterretention properties of pretreated biomass over thecourse of the hydrolysis reaction.Results Water retention value measurements, coupledwith 1H NMR T2 relaxometry data, showed anincrease in water retention and constraint of water bythe biomass with increasing levels of cellulosehydrolysis. This correlated with an increase in thefines fraction and a decrease in particle size, suggestingthat structural decomposition rather than changesin chemical composition was the most dominantcharacteristic.Conclusions With increased water retained by theinsoluble fraction as cellulose hydrolysis proceeds, itmay prove more difficult to efficiently separatehydrolysis residues from the liquid fraction withimproved hydrolysis
U2 - 10.1007/s10529-018-2521-8
DO - 10.1007/s10529-018-2521-8
M3 - Journal article
C2 - 29392453
VL - 40
SP - 703
EP - 709
JO - Biotechnology Letters
JF - Biotechnology Letters
SN - 0141-5492
IS - 4
ER -
ID: 195292220