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pretreatment

Sugar yields from two feedstock sources

Pretreated FS-10 post-harvest forest residuals. NARA image.
Pretreated FS-10 post-harvest forest residuals. NARA image.

Pretreatment is the process that breaks up major wood components (lignin and polysaccharides like hemicelluloses and cellulose) so that enzymes can degrade (hydrolyze) the polysaccharides into simple sugars. Effective pretreatment and hydrolysis are necessary to achieve high sugar quality and yield. The sugars derived from the pretreatment/hydrolysis process can serve …more

Graduate student poster wins 3rd place at international convention

NARA graduate student Jinxue Jiang
NARA graduate student Jinxue Jiang

Jinxue Jiang won 3rd place recognition for his poster at the Society of Wood Science and Technology 2015 International Conference held June 7-12.

Jinxue is a graduate student working towards his doctoral degree in material science and engineering at Washington State University’s Material Science and Engineering Program. His poster titled Multi-Technique Characterization of …more

Wood-to-alcohol conversion technology suitable for a pulp mill retrofit

Schematic of mild bisulfite pretreatment process. Courtesy of Junyong Zhu at USDA Forest Service, Forest Products Laboratory.
Schematic of mild bisulfite pretreatment process. Courtesy of Junyong Zhu at USDA Forest Service, Forest Products Laboratory.

Building a biorefinery to convert wood residues into chemical products like biojet fuel is expensive. The projected capital investment exceeds $850 million. An alternative, and potentially less costly approach, is …more

NARA selects a single pretreatment method

Simplified cartoon of the mild bisulfite pretreatment process
Simplified cartoon of the mild bisulfite pretreatment process

When NARA was initiated in the Fall 2011, it was tasked to evaluate available pretreatment methods and ultimately select one as a NARA-preferred method to incorporate into a wood to bio-jet fuel conversion process. Pretreatment is the process that breaks up the wood fibers so that enzymes can access …more