کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4997211 | 1459905 | 2017 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of different types of anaerobic seed sludge for the high rate anaerobic digestion of pig slurry in UASB reactors
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Three different types of anaerobic sludge (granular, thickened digestate and anaerobic sewage) were evaluated as seed inoculum sources for the high rate anaerobic digestion of pig slurry in UASB reactors. Granular sludge performance was optimal, allowing a high efficiency process yielding a volumetric methane production rate of 4.1 L CH4 Lâ1 dâ1 at 1.5 days HRT (0.248 L CH4 gâ1 COD) at an organic loading rate of 16.4 g COD Lâ1 dâ1. The thickened digestate sludge experimented flotation problems, thus resulting inappropriate for the UASB process. The anaerobic sewage sludge reactor experimented biomass wash-out, but allowed high process efficiency operation at 3 days HRT, yielding a volumetric methane production rate of 1.7 L CH4 Lâ1 dâ1 (0.236 L CH4 gâ1 COD) at an organic loading rate of 7.2 g COD Lâ1 dâ1. To guarantee the success of the UASB process, the settleable solids of the slurry must be previously removed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 238, August 2017, Pages 147-156
Journal: Bioresource Technology - Volume 238, August 2017, Pages 147-156
نویسندگان
Carlos Rico, Jesús A. Montes, José Luis Rico,