کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10235390 | 45036 | 2014 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced acetone/butanol/ethanol production by Clostridium beijerinckii IB4 using pH control strategy
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced acetone/butanol/ethanol production by Clostridium beijerinckii IB4 using pH control strategy Enhanced acetone/butanol/ethanol production by Clostridium beijerinckii IB4 using pH control strategy](/preview/png/10235390.png)
چکیده انگلیسی
PH is an essential factor for acetone/butanol/ethanol (ABE) production using Clostridium spp. In this study, batch fermentations by Clostridium beijerinckii IB4 at various pH values ranging from 4.9 to 6.0 were examined. At pH 5.5, the ABE production was dominant and maximum ABE concentration of 24.6Â g/L (15.7Â g/L of butanol, 8.63Â g/L of acetone and 0.32Â g/L of ethanol) was obtained with the consumption of 60Â g/L of glucose within 36Â h. However, in the control (without pH control), an ABE concentration of 14.1Â g/L (11.0Â g/L of butanol, 3.01Â g/L of acetone and 0.16Â g/L of ethanol) was achieved with the consumption of 41Â g/L of glucose within 40Â h. A considerable improvement in the productivity of up to 93.8% was recorded at controlled pH in comparison to the process without pH control. To better understand the influence of pH on butanol production, the reducing power capability and NADH-dependent butanol dehydrogenase activity were investigated, both of which were significantly improved at pH 5.5. Thus, the pH control technique is a convenient and efficient method for high-intensity ABE production.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Biochemistry - Volume 49, Issue 8, August 2014, Pages 1238-1244
Journal: Process Biochemistry - Volume 49, Issue 8, August 2014, Pages 1238-1244
نویسندگان
Min Jiang, Jia-nan Chen, Ai-yong He, Hao Wu, Xiang-ping Kong, Jun-li Liu, Chun-yan Yin, Wu-fang Chen, Pan Chen,