کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6763625 | 1431571 | 2019 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An experimental and modeling approach for ethanol production by Kluyveromyces marxianus in stirred tank bioreactor using vacuum extraction as a strategy to overcome product inhibition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
Vacuum ethanol removal effect on the fermentative performance of Kluyveromyces marxianus was assessed. Yeast was cultured in bench bioreactor at initial glucose concentration of 90â¯gâ¯Lâ1 in two sequential batches of 36â¯h, with a vacuum ethanol removal step and glucose feed before the second batch. Ethanol concentration after the first batch was 34.13â¯gâ¯Lâ1 (YP/S 0.38â¯gâ¯gâ1; QP 0.94â¯gâ¯Lâ1.hâ1), and 40.90â¯gâ¯Lâ1 (YP/S 0.18â¯gâ¯gâ1; QP 0.43â¯gâ¯Lâ1.hâ1) after the second batch. Ethanol production in a control assay without vacuum extraction only happened in the first batch (36.37â¯gâ¯Lâ1; YP/S 0.4â¯gâ¯gâ1; QP 1.01â¯g.Lâ1hâ1). The phenomenological modeling showed product inhibition and the importance of product removal to process improvement, although the yeast had needed an adaptation period to recover its fermentative metabolism after the stress caused by vacuum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 131, February 2019, Pages 261-267
Journal: Renewable Energy - Volume 131, February 2019, Pages 261-267
نویسندگان
Bruna Tavares, Maria das Graças de Almeida Felipe, Júlio César dos Santos, Félix Monteiro Pereira, Simone Damasceno Gomes, Luciane Sene,