Download PDF by Keith W. Waldron: Bioalcohol Production: Biochemical Conversion of
By Keith W. Waldron
Bioethanol is likely one of the major biofuels in a position to substituting petroleum utilization in cars, and has had one of many greatest affects thus far. the 1st iteration of bioethanol creation has had a world effect, even though it really is limited via power in depth grain-to-bioethanol creation expertise, and land utilization pressures (food vs. fuel). the advance of moment new release creation know-how, generating a much broader diversity of bioalcohols from lignocellulosic biomass, gets rid of a number of the stumbling blocks and bills that first new release creation faces. This e-book offers a accomplished and well timed reference at the biochemical conversion of lignocellulosic biomass for the creation of gasoline alcohols, expertly reviewing the advance of the total second-generation bioalcohol creation chain. The ebook covers the method engineering, know-how, modeling, and integration of the complete construction chain, from feedstock pretreatment directly to hydrolysis, to fermentation, and directly to purification. The booklet basically covers the creation of bioethanol, yet extends into assurance of the creation of longer-chain bioalcohols that might be elemental to destiny biofuel usage.
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Extra info for Bioalcohol Production: Biochemical Conversion of Lignocellulosic Biomass
BALAN, L. DA COSTA S O U S A a n d B . E . , enzymatic hydrolysis and fermentation). This chapter explores various thermochemical pretreatments that enhance enzymatic digestibility of lignocellulosics by solubilizing, hydrolyzing and chemically modifying individual cell-wall components like lignin, hemicellulose and cellulose. Substrate and pretreatment related factors that influence the effectiveness of the entire biorefinery process, based on the ultimate enzymatic digestibility and fermentability of the treated biomass, are closely examined from an economic and environmental point of view.
130, 496±508. Biermann, C J, McGinnis, G D and Schultz, T P (1987), `Scanning electron microscopy of mixed hardwoods subjected to various pretreatment processes', J. Agric. , 35, 713±716. Bobleter, O and Pape, G (1968), `Hydrothermal decomposition of glucose', Monatsh. Chem, 99, 1560±1567. Bobleter, O, Niesner, R and Rohr, M (1976), `The hydrothermal degradation of cellulosic matter to sugars and their fermentative conversion to protein', J. Appl. Polym. , 20, 2083±2093. Boehm, R M (1930), `The Masonite process', Ind.
2007). More recalcitrant feedstocks, such as softwood, lack acetylated hemicellulose and instead have primarily minimally acetylated glucomannans and galactoglucomannans (Ramos, 2003) and require addition of an acid catalyst prior to pretreatment. Acid addition lowers the severity of the conditions required to achieve optimal substrate characteristics and minimizes inhibitor ß Woodhead Publishing Limited, 2010 12 Bioalcohol production formation (Ramos, 2003). , 2002, 2003b). While marginally higher ethanol yields were obtained compared to an equivalent one-stage process, the additional cost of a second steam pretreatment step would likely prevent adoption of this technique.
Bioalcohol Production: Biochemical Conversion of Lignocellulosic Biomass by Keith W. Waldron