کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4926171 | 1363174 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Is cellulase production by solid-state fermentation economically attractive for the second generation ethanol production?
ترجمه فارسی عنوان
تولید سلولاز توسط تخمیر جامد به لحاظ اقتصادی برای نسل دوم تولید اتانول جذاب است؟
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کلمات کلیدی
آنزیم، سلولاز، تخمیر جامد، تحلیل اقتصادی، نسل دوم اتانول،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The cost of enzymes for the enzymatic route of the second generation ethanol production is a crucial bottleneck to turn this process into a reality. Solid-state fermentation (SSF) is an environmentally friendly process of enzyme synthesis, although little is known about the costs associated to it. Therefore, this work analyzed economical scenarios of cellulase production by SSF in a pilot plant integrated to both a first and a second generation ethanol processes. The chosen substrate for the enzyme production was composed by sugarcane bagasse and wheat bran, cultivated by the thermophilic fungus Myceliophthora thermophila I-1D3b at 45 °C during 96 h. The estimation of the most important economic indicators showed that the SSF process is economically attractive, due to its easy integration to the main process, and its revenue is up to four fold greater than electricity cogeneration. Economic indicators, such as the internal rate of return (IRR) and payback, were higher than those usually accepted by Brazilian investor in the sucro-energetic sector. Nevertheless, return on investment (ROI) was under than that recommended by the literature. The sensitivity analysis showed strong influence of the enzyme activity on the economic indicators, being the most important parameter for the project profitability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 114, Part B, December 2017, Pages 525-533
Journal: Renewable Energy - Volume 114, Part B, December 2017, Pages 525-533
نویسندگان
FabrÃcio Bruno Mendes, Daniel Ibraim Pires Atala, João Cláudio Thoméo,