کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1273261 1497610 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biological hydrogen production in continuous stirred tank reactor systems with suspended and attached microbial growth
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Biological hydrogen production in continuous stirred tank reactor systems with suspended and attached microbial growth
چکیده انگلیسی

Fermentative H2 production in continuous stirred tank reactor (CSTR) system with bacteria attached onto granular activated carbon (GAC) was designed to produce H2 continuously. The H2 production performances of CSTR with suspended and attached-sludge from molasses were examined and compared at various organic loading rates (8–40 g COD/L/d) at hydraulic retention time of 6 h under mesophilic conditions (35 °C). Both reactor systems achieved ethanol-type fermentation in the pH ranges 4.5–4.8 and 3.8–4.4, respectively, while ORP ranges from −450 to −470 mV and from −330 to −350 mV, respectively. The hydrogen production rate in the attached system was higher compared to that of the suspended system (9.72 and 6.65 L/d/L, respectively) while specific hydrogen production rate of 5.13 L/g VSS/d was higher in the suspended system. The attached-sludge CSTR is more stable than the suspended-sludge CSTR with regard to hydrogen production, pH, substrate utilization efficiency and metabolic products (e.g., volatile fatty acids and ethanol) during the whole test.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 7, April 2010, Pages 2807–2813
نویسندگان
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