کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11263678 | 1666147 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydraulic and organic rates applied to pilot scale UASB reactor for sugar cane vinasse degradation and biogas generation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
A pilot-scale upflow anaerobic sludge blanket (UASB) reactor (120â¯L) was operated for biogas production by vinasse degradation. The reactor was operated for 700 days using a recirculation rate of 1:3 with organic loading rates (OLR) ranging from 0.5 to 32.4 kgCOD.mâ3.dâ1, upflow velocities ranged from 0.008 to 0.292â¯mâ¯hâ1(feed added with recirculation) and the hydraulic retention time ranged from 33.33 to 0.86 days. The reactor demonstrated a stable performance at OLR at all applied loads. The COD removal efficiencies throughout the experiment were 87.5â¯Â±â¯5.3 and 90.5â¯Â±â¯3.6% for raw and soluble COD, respectively. Total volatile acids ranged from 59â¯mgâ¯Lâ1 to 585â¯mgâ¯Lâ1. The concentration of acetic and propionic acids at the reactor effluent reached 28â¯mgâ¯Lâ1 on OLR 20 kgCOD.mâ3.dâ1. The methane content in the biogas was 68.8â¯Â±â¯7.14%.The methane yield of 0.299â¯Â±â¯0.066 LCH4.gâ1COD corresponds to about 76.4% of the theoretical methane yield. The methane productivity reached the highest value of 8.059 LCH4.Lâ1.dâ1 at 32.27 kgCOD.mâ3.dâ1., corresponding to 83.9% of the theoretical value (9.611 LCH4.Lâ1.dâ1). This result is very promising for power generation in the sugar and ethanol industry, complementing the energy balance of sugarcane, as shown by an energy balance evaluation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 119, December 2018, Pages 411-417
Journal: Biomass and Bioenergy - Volume 119, December 2018, Pages 411-417
نویسندگان
Valéria Del Nery, Inaê Alves, Márcia Helena Rissato Zamariolli Damianovic, Eduardo Cleto Pires,