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Autohydrolysis-extraction process

Alcohol recovery from the fermentation brews was less than complete in most cases, which may be attributable to less than ideal conditions. The best yields, 60 to 97% of theory, were obtained with sugars obtained by hydrolysis of cellulosic residues of the autohydrolysis-extraction process. Unextracted pulps, or the hemicellulose solutions, gave poor ethanol formation, which suggests inhibition. In the calculation of material and energy balances which follows, we have assumed 95% yields of ethanol from wood sugars, which is readily achieved in industrial practice and which we believe to be achievable with our wood sugars as well. [Pg.192]

The data above enable us to make some rough estimates of costs associated with two processes (i) ACID, that is aspen wood-autohydrolysis-caustic extraction-acid hydrolysis-fermentation-distillation and (ii) ENZYME, that is aspen wood-autohydrolysis-caustic extraction-enzymatic hydrolysis-fermentation-distillation. For purposes of comparison, the product in both cases will be assumed to be 10 million gallons of 95% ethanol per year, a minimum economic size. [Pg.196]


See other pages where Autohydrolysis-extraction process is mentioned: [Pg.184]    [Pg.186]    [Pg.184]    [Pg.186]    [Pg.192]    [Pg.192]    [Pg.199]    [Pg.147]    [Pg.322]    [Pg.112]    [Pg.112]    [Pg.99]   
See also in sourсe #XX -- [ Pg.184 , Pg.187 , Pg.188 , Pg.191 , Pg.193 , Pg.195 ]




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Autohydrolysis

Extraction process

Extractive processes

Processing extraction

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