کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8096372 1522068 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of a membrane permeation system for biogas upgrading using model and real gaseous mixtures: The effect of operating conditions on separation behaviour, methane recovery and process stability
ترجمه فارسی عنوان
بررسی سیستم نفوذی غشاء برای ارتقای بیوگاز با استفاده از مدل و مخلوط گازهای واقعی: اثر شرایط عملیاتی بر رفتار جداسازی، بازیابی متان و پایداری فرآیند
کلمات کلیدی
بیوگاز، بیوماتین، جداسازی گاز، غشاء، پلییمید، انرژی تجدید پذیر،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
In this paper, the enrichment of methane by membrane technology was studied by employing (i) a model as well as (ii) a real biogas mixture produced on a laboratory-scale. Thereafter, the endurance of the process was tested at an existing biogas plant. The commercial gas separation module under investigation contained hollow fiber membranes with a polyimide selective layer. During the measurements, the effect of critical factors (including the permeate-to-feed pressure ratio and the splitting factor) was sought in terms of the (i) CH4 content on the retentate-side and (ii) CH4 recovery, which are important measures of biogas upgrading efficiency. The results indicated that a retentate with 93.8 vol% of CH4 - almost biomethane (>95 vol% of CH4) quality - could be obtained using the model gas (consisting of 80 vol% of CH4 and 20 vol% of CO2) along with 77.4% CH4 recovery in the single-stage permeation system. However, in the case of the real biogas mixture, ascribed primarily to inappropriate N2/CH4 separation, the peak methane concentration noted was only 80.7 vol% with a corresponding 76% CH4 recovery. Besides, longer-term experiments revealed the adequate time-stability of membrane purification, suggesting such a process is feasible under industrial conditions for the improvement of biogas quality.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 185, 1 June 2018, Pages 44-51
نویسندگان
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