scholarly journals Hydrolysis of concentrated dilute base pretreated biomass slurries.

2011 ◽  
Author(s):  
Gregory Brockmann
Keyword(s):  
Biomass Slurries ◽  
Hydrolysis Of ◽  
Pretreated Biomass

scholarly journals Ultrasound Assisted Pretreatments Applied to Cupuaçu Husk (Theobroma grandiflorum) from Brazilian Legal Amazon for Biorefinery Concept

2022 ◽  
Author(s):  
Nicole Marasca ◽  
Isabella Cardoso ◽  
Magale Rambo ◽  
Daniel Bertuol ◽  
Michele Rambo ◽  
...  
Keyword(s):  
Native Species ◽  
Liquid Fraction ◽  
Value Added ◽  
X Ray Diffraction ◽  
X Ray ◽  
Aqueous Acid ◽  
Ultrasound Assisted ◽  
Hydrolysis Of ◽  
Pretreated Biomass ◽  
Value Added Products

Cupuaçu husk (CH) is the waste of a common fruit from a native species of the Brazilian Legal Amazon. The current study investigated the influence of ultrasound (US) combined with aqueous, acid, alkaline, and ionic liquid (IL) pretreatments on the chemical and physical aspects of CH and the yield of chemical platforms production, 5-hydroxymethylfurfural (HMF) and furfural (FF), using IL. Scanning electron microscopy, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy were used to feature the raw and pretreated biomass. The highest levels of glucose (9.90 g L-1) were observed in the liquid fraction resulting from the acid + US pretreatment followed by acid hydrolysis. The IL + US pretreatment recorded the best performance in removing lignin. Based on XRD analyses, ultrasound increased crystallinity of all pretreated samples as a result of the removal of cellulose’s amorphous fraction. However, it promoted accessibility to adopted reagents by increasing biomass exposure due to cavitation. The best yields of HMF and FF were recorded from hydrolysis of the solid fraction resulting from the acid + US (12.94%) and alkaline + US (48.84%) pretreatment, respectively. These results indicate satisfactory performance of ultrasound assisted pretreatments to the simplified and economic conversion of biomass into value-added products.

scholarly journals Swollenin aids in the amorphogenesis step during the enzymatic hydrolysis of pretreated biomass

2013 ◽  
Vol 142 ◽  
pp. 498-503 ◽  
Author(s):  
Keith Gourlay ◽  
Jinguang Hu ◽  
Valdeir Arantes ◽  
Martina Andberg ◽  
Markku Saloheimo ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Hydrolysis Of ◽  
Pretreated Biomass

Determination on Crystallinity of Ionic Liquids Pretreated Biomass

2011 ◽  
Vol 393-395 ◽  
pp. 668-671
Author(s):  
Hong Xue Xie ◽  
John Prausnitz ◽  
Xiu Ling Wu
Keyword(s):  
Ionic Liquids ◽  
Crystallinity Index ◽  
Processing Parameters ◽  
Optimal Conditions ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of ◽  
Pretreated Biomass

The orthogonal L9 (3)4 method was used to analyze the effect of a few processing parameters on crystallinity of pretreated miscanthus. The optimal conditions were: the miscanthus concentration was 30mg per gram of solvent, the temperature and time for dissolution were 120°C and 2 h respectively, and aqueous K3PO4 was used for precipitation. For these optimal conditions, the crystallinity index is about 41%, significantly lower than that of new miscanthus whose crystallinity index is 64%. A decrease in crystallinity favors efficient hydrolysis of cellulose to sugars that can be fermented to ethanol.

A Simplified Method for the Measurement of Insoluble Solids in Pretreated Biomass Slurries

2009 ◽  
Vol 162 (4) ◽  
pp. 975-987 ◽  
Author(s):  
Noah D. Weiss ◽  
Jonathan J. Stickel ◽  
Jeffrey L. Wolfe ◽  
Quang A. Nguyen
Keyword(s):  
Simplified Method ◽  
Biomass Slurries ◽  
Pretreated Biomass
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