کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
681967 888973 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of temperature, pH and buffer presence on ethanol production from synthesis gas by “Clostridium ragsdalei”
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Effect of temperature, pH and buffer presence on ethanol production from synthesis gas by “Clostridium ragsdalei”
چکیده انگلیسی

Fermentation pH, incubation temperature, and presence or absence of media buffer can alter the activity of microorganisms. For instance, carbon monoxide and hydrogen components of syngas show decreased solubility with increasing temperature, Clostridium species preferentially switch from acetogenesis to solventogenesis phase at pH below 5.0, and morpholinoethanesulfonic acid (MES) added as media buffer has been shown to increase lag time for ethanol production. The objective of the present study was to determine the effects of temperature, pH and MES buffer on ethanol production by “Clostridium ragsdalei”. This study showed syngas fermentation using “Clostridium ragsdalei” at 32 °C with media without buffer was associated with higher ethanol concentration and reduced lag time in switching to solventogenesis. Temperature above 40 °C and pH below 5.0 were outside the optimal range for growth and metabolism of the bacteria.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 10, May 2011, Pages 5794–5799
نویسندگان
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