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هضم بی هوازی حالت جامد قسمت آلی زباله جامد شهری برای تولید بیوگاز (مطالعه موردی در مشهد) | ||
| تحقیقات سامانه‌ها و مکانیزاسیون کشاورزی | ||
| مقاله 6، دوره 21، شماره 76، دی 1399، صفحه 69-86 اصل مقاله (1.01 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/erams.2020.341540.1337 | ||
| نویسندگان | ||
| محسن ثقوری* 1؛ رضا عبدی2؛ محمد علی ابراهیمی نیک3؛ عباس روحانی3؛ محمد علی میسمی4 | ||
| 1دانشجوی دکتری، دانشگاه تبریز، دانشکده کشاورزی، گروه مهندسی بیوسیستم، تبریز، ایران | ||
| 2عضو هیئت علمی دانشگاه تبریز، دانشکده کشاورزی، گروه مهندسی بیوسیستم، تبریز، ایران | ||
| 3عضو هیأت علمی گروه مهندسی بیوسیستم، دانشکده کشاورزی دانشگاه فردوسی مشهد، مشهد، ایران | ||
| 4عضو هیأت علمی گروه مهندسی بیوسیستم، ، دانشکده کشاورزی دانشگاه تبریز | ||
| چکیده | ||
| هضم بی‌هوازی حالت جامد، علاوه بر تولید انرژی به عنوان راهکاری برای مدیریت زباله جامد شهری در نظر گرفته می‌شود. مزایای این روش شامل حجم کمتر مورد نیاز رآکتور، انرژی کمتر برای گرم کردن و جابجایی راحتتر مواد هضم شده می‌باشد. از آنجا که قسمت آلی زباله جامد شهری بسیار ناهمگن است، در نتیجه برای بررسی تولید بیوگاز از هر نوع زباله جامد شهری، مطالعات ویژه آن لازم است که هدف این تحقیق می‌باشد. در این پژوهش هضم بی‌هوازی حالت جامد قسمت آلی زباله جامد شهری به مدت 30 روز در مقیاس آزمایشگاهی با غلظت مواد جامد 20% برای ارزیابی میزان تولید بیوگاز در شرایط ناپیوسته و مزوفیلیک (بینابین) (37 درجه سلسیوس) انجام شد. با توجه به بالا بودن درصد مواد جامد کل بر اساس نتایج ارزیابی اولیه خصوصیات قسمت آلی زباله جامد شهری (درصد مواد جامد کل 63/30%)، هضم بی‌هوازی حالت جامد برای مدیریت این ضایعات مناسب است. به منظور بازسازی شرایط واقعی در مقیاس تجاری، هیچگونه مواد افزودنی به رآکتور اضافه نشد. عملکرد راکتور با اندازه‌گیری روزانه حجم بیوگاز تولیدی و محاسبه میزان تخریب‌پذیری مواد جامد فرار، مورد ارزیابی قرار گرفت. حجم بیوگاز تولیدی در انتهای فرآیند هضم، مقدار 372 میلیلیتر به ازای هر گرم مواد جامد فرار برای غلظت مواد جامد کل 20% با درصد متان 82/61% (معادل 230 میلیلیتر) به دست آمد. همچنین میزان تخریب‌پذیری مواد جامد فرار به عنوان یکی از پارامترهای بهره‌وری آزمایشات حدود 7/64% محاسبه شد. | ||
| کلیدواژه‌ها | ||
| انرژی‌های تجدید‌پذیر؛ ضایعات آلی؛ متان؛ مدیریت پسماند؛ هضم بی‌هوازی ناپیوسته | ||
| عنوان مقاله [English] | ||
| Solid State Anaerobic Digestion of Organic Fraction of Municipal Solid Waste for Biogas Production (Case Study in Mashhad) | ||
| نویسندگان [English] | ||
| mohsen saghouri1؛ Reza Abdi2؛ Mohammadali Ebrahimi-Nik3؛ Abbas Rohani3؛ Mohammadali Maysami4 | ||
| 1Ph.D. Student, Department of Biosystems Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran | ||
| 2Department of Biosystem engineering, faculty of agriculture, University of Tabriz, Tabriz, Iran | ||
| 3Department of Biosystems Engineering, Agriculture Faculty, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 4Department of Biosystems Engineering, Agriculture Faculty, University of Tabriz, Tabriz, Iran | ||
| چکیده [English] | ||
| Increasing in consumption of fossil fuels and their price and environmental impacts, have led to a growing need and interest in replacement of these fuels with new and renewable energy sources. Anaerobic digestion is one of the attractive methods to produce biogas from organic matter.Wet state and solid state arethe categories of anaerobic digestion. Some benefits of solid-state anaerobic digestion (SS-AD) include the need for smaller reactor capacity requirements, less energy used for heating, and easier handling.In this study, SS-AD of organic fraction of municipal solid waste (OFMSW) was examined. The study was done in the laboratory scale of (1-liter volume), mesophiliccondition (37°C), and 20% solid content. Characterization of OFMSW indicated good potential of these materials to produce biogas through SS-AD (69.37% of total solids, 76.2% of volatile solids, and a C/N ratio of 38.28%). According to the results of SS-AD, a total of 372 ml biogas/g of volatile solids was obtained under normal laboratory conditions, of which 230 ml (61.82%) was methane. Also, a reduction of 64.7% was obtained for volatile solids, which is one of the parameters of the experiment productivity. | ||
| کلیدواژه‌ها [English] | ||
| Batch Anaerobic Digestion, Methane, Organic Waste, Renewable Energies, Waste Management | ||
| مراجع | ||
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