Removal of Acidic Impurities from Corn Stover Hydrolysate Liquor by Resin Wafer Based Electrodeionization

Autor:	Sabeen F. Ahmad, A. Moradia, Anthony T. Fracaro, Yupo J. Lin, Seth W. Snyder, Saurav Datta, Michael P. Henry, Daniel J. Schell, Patricia S. Gillenwater, Cynthia Sanville Millard, Zofia P. Gwarnicki
Rok vydání:	2013
Předmět:	Chromatography General Chemical Engineering food and beverages Sulfuric acid General Chemistry Industrial and Manufacturing Engineering Hydrolysate Acetic acid chemistry.chemical_compound Corn stover chemistry Enzymatic hydrolysis Hemicellulose Cellulose Electrodeionization
Zdroj:	Industrial & Engineering Chemistry Research. 52:13777-13784
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie4017754
Popis:	Dilute acid (sulfuric acid) pretreatment of lignocellulosic biomass releases monomeric xylose, xylo-oligomers, and acetic acid by degradation of hemicellulose. Acids inhibit both the enzymatic hydrolysis of cellulose to monomeric sugars and downstream fermentation of sugars to biofuels. Removal of acetic acid and sulfuric acid, as well as the nonionic toxic impurities, from the hydrolysate liquor prior to enzymatic hydrolysis may improve biofuel yields. Development of an efficient acid separation technique is essential for enhanced process performance and cost-effective biofuel production. We evaluated the use of an electrically driven membrane separation technique, resin wafer based electrodeionization (RW-EDI), for the removal of ionic impurities (acetic acid and sulfuric acid) from corn stover hydrolysate liquor. RW-EDI provides the capability to control solution pH in situ by voltage adjustment. In situ pH control enables pKa-selective recovery of acids (or bases). The results indicate that RW-EDI is ...
Databáze:	OpenAIRE
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