1992
DOI: 10.1007/bf02950778
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High solids simultaneous saccharification and fermentation of pretreated wheat straw to ethanol

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Cited by 144 publications
(116 citation statements)
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“…The results indicate that the combined effect of high stress due to lowwater activity and high-osmotic pressure, increasing ethanol concentration and higher concentrations of inhibitors resulted in loss of viability during the last 48 h of the fermentation in experiments with 35% and 40% (w/w) initial DM. This is consistent with results from a previous SSF study where the viability of the yeast dropped to zero after 4 days at an initial solids concentration above 20% DM of pretreated wheat straw (Mohagheghi et al, 1992). In VHG fermentations, the presence of sufficient nitrogen have proven to be beneficial for the yeast performance and viability under conditions of high stress (Jones and Ingledew, 1994).…”
Section: Effect Of Initial Dry Matter Content On Combined Liquefactiosupporting
confidence: 91%
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“…The results indicate that the combined effect of high stress due to lowwater activity and high-osmotic pressure, increasing ethanol concentration and higher concentrations of inhibitors resulted in loss of viability during the last 48 h of the fermentation in experiments with 35% and 40% (w/w) initial DM. This is consistent with results from a previous SSF study where the viability of the yeast dropped to zero after 4 days at an initial solids concentration above 20% DM of pretreated wheat straw (Mohagheghi et al, 1992). In VHG fermentations, the presence of sufficient nitrogen have proven to be beneficial for the yeast performance and viability under conditions of high stress (Jones and Ingledew, 1994).…”
Section: Effect Of Initial Dry Matter Content On Combined Liquefactiosupporting
confidence: 91%
“…Again, the correlation was almost linear over range from 7.5% to 40% (w/w) DM. In previous SSF studies using either wet oxidized corn stover at solids concentrations from 8% to 17% DM or dilute acid pretreated wheat straw at solids concentrations from 12% to 32% DM a similar negative correlation has been observed (Mohagheghi et al, 1992;Varga et al, 2004). The cellulose remaining after fermentation was measured in order to determine influence of increasing DM on the fermentation performance of the yeast.…”
Section: Effect Of Initial Dry Matter Content On Combined Liquefactiosupporting
confidence: 53%
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“…Uma das abordagens para reduzir esses custos é a operação em alta concentração de sólidos, geralmente apresentada com cargas de sólidos >15% (Hodge et al, 2009). A hidrólise enzimática em alta concentração de sólidos apresenta vantagens econômicas em relação ao processo convencional em baixa concentração de sólidos, como: (1) menor custo de capital devido à redução do volume; (2) menor custo de operação devido à menor quantidade de energia para aquecer e resfriar; (3) menor custo na etapa de separação do produto devido às altas concentrações de produto, e (4) redução dos custos de eliminação e tratamento de resíduos devido ao baixo consumo de água (Mohagheghi et al, 1992), porém, existem poucos modelos e dados experimentais da hidrólise de biomassa lignocelulósica em alta concentração de sólidos.…”
Section: Cellulose Hemicellulose R4unclassified