Comparison of different pretreatment methods for lignocellulosic materials. Part I: Conversion of rye straw to valuable products

Journal
Bioresource technology  
Volume
102
Issue
8
Start Page
5221
End Page
5228
Citation
Bioresource Technology 102 (8): 5221-5228 (2011-04)
Publisher DOI
10.1016/j.biortech.2011.02.005
Scopus ID
2-s2.0-79952536261
PubMed ID
21349703
The conversion of lignocellulose to valuable products requires I: a fractionation of the major components hemicellulose, cellulose, and lignin, II: an efficient method to process these components to higher valued products. The present work compares liquid hot water (LHW) pretreatment to the soda pulping process and to the ethanol organosolv pretreatment using rye straw as a single lignocellulosic material. The organosolv pretreated rye straw was shown to require the lowest enzyme loading in order to achieve a complete saccharification of cellulose to glucose. At biomass loadings of up to 15% (w/w) cellulose conversion of LHW and organosolv pretreated lignocellulose was found to be almost equal. The soda pulping process shows lower carbohydrate and lignin recoveries compared to the other two processes. In combination with a detailed analysis of the different lignins obtained from the three pretreatment methods, this work gives an overview of the potential products from different pretreatment processes.
Subjects
Biorefinery
Enzymatic hydrolysis
Lignocellulose
Organosolv
Pretreatment
DDC Class
600: Technology