کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1710807 1519514 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of hydraulic retention time and organic loading rate on performance and stability of anaerobic digestion of Spirulina platensis
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Effects of hydraulic retention time and organic loading rate on performance and stability of anaerobic digestion of Spirulina platensis
چکیده انگلیسی


• Kinetics and methane yield of Spirulina were determined by anaerobic digestion.
• Effects of hydraulic retention time and organic loading rate were investigated.
• Ammonia inhibition and VFA accumulation at high organic loadings were elucidated.
• Kinetic model was developed to predict methane yield from digestion of microalgae.

The effects of hydraulic retention time (HRT) and organic loading rate (OLR) were investigated during a continuous anaerobic digestion of Spirulina platensis. The continuous process operated with varying HRT (10–25 d) and OLR (1.0–4.0 [g VS] l−1 d−1) resulted in the biogas and methane yields in the range of 0.276–0.502 l [g VS]−1 and 0.163–0.342 l [g VS]−1, respectively. The methane yield decreased with the increase in OLR and the reduction in HRT. Maximum methane yield of 0.342 l [g VS]−1 was produced when the digester was operated at OLR of 1.0 [g VS] l−1 d−1 and 25 d HRT. A mathematical model was developed from a kinetic study for predicting methane yield as the function of HRT during a continuous digestion. The model performed well at OLR lower than 2.0 [g VS] l−1 d−1, at which the digestion was not limited by high ammonia levels or volatile fatty acid accumulation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosystems Engineering - Volume 147, July 2016, Pages 174–182
نویسندگان
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