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close this bookRenewable biological systems for alternative sustainable energy production. (FAO Agricultural Services Bulletin - 128) (1997)
close this folderChapter 3 - Production of fuel alcohol from cellulosic biomass
close this folder3.5 Alcohol production using an integrated pilot plant
View the document(introduction...)
View the document3.5.1 Outline
View the document3.5.2 Pre-treatment of cellulosic biomass
View the document3.5.3 Cellulase production
View the document3.5.4 Saccharification of biomass
View the document3.5.5 Enzyme recovery from biomass
View the document3.5.6 Concentration of sugar solutions
View the document3.5.7 Alcohol fermentation
View the document3.5.8 Alcohol recovery

3.5.6 Concentration of sugar solutions

In order to improve the efficiency of alcohol fermentation, UF-filtered sugar solutions which were also free of enzyme were passed through a polyamide, spiral-type RO membrane, enabling them to be concentrated from between 3 and 15% to a final concentration of approximately 30%. Using this loose RO system, more than 95% of the sugar was recovered over an extended period.