کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7070644 1459927 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Targeted modification of organic components of municipal solid waste by short-term pre-aeration and its enhancement on anaerobic degradation in simulated landfill bioreactors
ترجمه فارسی عنوان
اصلاح هدفمند اجزای ارگانی از ضایعات جامد شهری از طریق پیش تدارک کوتاه مدت و افزایش آن در تخریب بی هوازی در بیوراکتورهای زباله شبیه سازی شده
کلمات کلیدی
زباله جامد شهری، کسرهای آلی، کوتاه مدت پیش هوشیاری، بیوراکتور زباله های زباله، اسیدی شدن بیش از حد،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Pre-aeration is effective on regulating subsequent anaerobic degradation of municipal solid waste (MSW) with high organic fractions during landfilling. The strength of pre-aeration should be optimized to intentionally remove some easily biodegradable fractions while conserve bio-methane potential as much as possible. This study investigates the evolution of organic components in MSW during 2-14 days pre-aeration process and its impacts on subsequent anaerobic degradation in simulated landfill bioreactors. Results showed that a 6-day pre-aeration enabled to develop a thermophilic stage, which significantly accelerated biodegradation of organics except lignocelluloses, with removal rates of 42.8%, 76.7% and 25.1% for proteins, carbohydrates and lipids, respectively. Particularly, ammonia from accelerated ammonification in the thermophilic stage neutralized VFAs generated from anaerobic landfilling. As a result, the MSW with 6-day pre-aeration obtained the highest methane yield 123.4 NL/kg dry matter. Therefore, it is recommended to interrupt pre-aeration before its cooling stage to switch to anaerobic landfilling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 216, September 2016, Pages 250-259
نویسندگان
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