TY - JOUR
T1 - The effects of mild alkaline pretreatment on the enzymatic hydrolysis of eucalyptus pellita wood
AU - Zhand, Soodeh
AU - Suk, Bongyang
AU - Kang, Kyu Young
AU - Jeong, Myung Joon
N1 - Publisher Copyright:
© 2020 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.
PY - 2020
Y1 - 2020
N2 - In this study, a dilute alkaline pretreatment (sodium carbonate and calcium hydroxide mixture) was evaluated for saccharification of extruded Eucalyptus wood. The hydroxide ions produced by the alkaline combination is remarkably more effective than using the alkaline compounds individually. Three critical factors for the simultaneous pretreatment and saccharification process, such as the pretreatment time, temperature, and molar concentration of Na2CO3:Ca(OH)2, were optimized to maximize bio sugar yield. The results show that although the lignin amount of hardwoods (i.e., Eucalyptus) is high (34.8%), but it is possible to overcome the recalcitrant of wood and improve glucose yields by employing this combined pretreatment (mechanical and chemical). The results also show that the glucose conversion by the enzyme was improved by approximately 14% for every 10% increase in delignification rate. However, simultaneously, the yield of glucose was reduced by approximately 7% during every 10% increase in delignification rate during alkaline pretreatment. This study indicated that mild sodium carbonate and calcium hydroxide pretreatment effectively reduced biomass recalcitrance and subsequently improved the digestibility of lignocellulosic biomass.
AB - In this study, a dilute alkaline pretreatment (sodium carbonate and calcium hydroxide mixture) was evaluated for saccharification of extruded Eucalyptus wood. The hydroxide ions produced by the alkaline combination is remarkably more effective than using the alkaline compounds individually. Three critical factors for the simultaneous pretreatment and saccharification process, such as the pretreatment time, temperature, and molar concentration of Na2CO3:Ca(OH)2, were optimized to maximize bio sugar yield. The results show that although the lignin amount of hardwoods (i.e., Eucalyptus) is high (34.8%), but it is possible to overcome the recalcitrant of wood and improve glucose yields by employing this combined pretreatment (mechanical and chemical). The results also show that the glucose conversion by the enzyme was improved by approximately 14% for every 10% increase in delignification rate. However, simultaneously, the yield of glucose was reduced by approximately 7% during every 10% increase in delignification rate during alkaline pretreatment. This study indicated that mild sodium carbonate and calcium hydroxide pretreatment effectively reduced biomass recalcitrance and subsequently improved the digestibility of lignocellulosic biomass.
KW - Alkaline pretreatment
KW - Glucose yield
KW - Saccharification
KW - Sodium carbonate and calcium hydroxide
UR - http://www.scopus.com/inward/record.url?scp=85096304420&partnerID=8YFLogxK
U2 - 10.7584/JKTAPPI.2020.04.52.2.70
DO - 10.7584/JKTAPPI.2020.04.52.2.70
M3 - Article
AN - SCOPUS:85096304420
SN - 0253-3200
VL - 52
SP - 70
EP - 77
JO - Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry
JF - Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry
IS - 2
ER -