Substrate Characteristic Analysis for Anaerobic Digestion: A Study on Rice and Triticale Straw
Journal article, 2012
Different substrate characteristic analyses have been studied on rice and triticale straw pretreated with NMMO (N-methylmorpholine-N-oxide) prior to biogas production. Simons' stain, water retention value (WRV), and enzymatic adsorption were used to measure the change in the accessible surface area of the lignocellulosic substrates. FTIR was used to measure the change in cellulosic crystallinity and Time-of-Flight-Secondary-Ion-Spectroscopy (ToF-SIMS) to measure the ratio of cellulose to lignin on the sample surface. All methods showed increased accessible surface area and a decrease in crystallinity after the pretreatments. These qualities were linked to improved biogas production. In the future, the tested methods could replace the time-consuming methane potential analysis to predict the methane production of lignocellulosic materials. Simons' stain, enzymatic adsorption, and crystallinity measurement by FTIR can be regarded as the recommended methods for the prediction of the improved biogas production as a result of the pretreatment.
ethanol
Simons' Stain
biogas production
pretreatment
methylmorpholine-n-oxide
Straw
enzymatic-hydrolysis
cellulosomes
Enzymatic
nmmo
cellulase adsorption
Accessible Surface Area
staining technique
biomass
Lignocellulose
Author
Anna Teghammar
Chalmers, Chemical and Biological Engineering
R. Chandra
J. N. Saddler
Mohammad Taherzadeh Esfahani
I. S. Horvath
BioResources
1930-2126 (ISSN) 19302126 (eISSN)
Vol. 7 3 3921-3934Subject Categories
Industrial Biotechnology