کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
683440 1460040 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Semi-continuous biohydrogen production as an approach to generate electricity
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Semi-continuous biohydrogen production as an approach to generate electricity
چکیده انگلیسی

In this work, a semi-continuous biological system was established to produce hydrogen and generate electricity by coupling the bioreactor to a fuel cell. Heat and acid pretreatments (at 35 and 55 °C) of a seed sludge used as inoculum were performed in order to increase hydrogen producers. Different initial glucose concentrations (IGC) were tested for heat pretreated inoculum at 35 °C to determine the optimum concentration of glucose that supported the highest hydrogen production. Results showed that the heat pretreated inoculums (35 °C) reached the highest hydrogen molar yield of 2.85 mol H2/mol glucose (0.014 L/h), which corresponds to the acetic acid pathway. At the optimum IGC (10 g/L, 35 °C) the hydrogen molar yield was 3.6 mol H2/mol glucose (0.023 L/h). The coupled bioreactor-fuel cell system yielded an output voltage of 1.06 V, power of 0.1 W (25 °C) and a current of 68 mA. The overall results suggest that high hydrogen molar yields can be obtained through the acetic acid pathway and that is feasible to generate electricity using hydrogen from the semi- continuous bioreactor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 100, Issue 24, December 2009, Pages 6369–6377
نویسندگان
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