کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7081988 1460003 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Organic loading rate shock impact on operation and microbial communities in different anaerobic fixed-bed reactors
ترجمه فارسی عنوان
تأثیر بارگذاری آلی بر جراحت و جوامع میکروبی در رآکتورهای غیرخطی ثابت است
کلمات کلیدی
رآکتور ثابت ثابت، نرخ بارگیری آلی، وسایل نقلیه فیبر کربن، جامعه میکروبی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
For the fixed-bed reactors in this experiment, during 40 days of stable operation and under different organic loading shocks, biogas production remained stable at 21 L, effluent pH remained between 6.8 and 7.5, and chemical oxygen demand (COD) removal efficiency and the biogas methane content were greater than 80% and 75%, respectively. The community was analyzed using denaturing gradient gel electrophoresis (DGGE), 16S rRNA gene clone library screening, and quantitative PCR. Findings revealed that bacteria and methanogenic archaea were typically dominant in the adhering sludge. Methanomicrobiales was identified in carbon fiber carriers, they were breeding slowly, and attached easily. The 16S rRNA gene concentration of methanogenic archaea was higher in the adhering sludge than in the deposited sludge. Our results indicated that the colonization of the microorganism played a very important role in the carbon fiber carriers, as well as in the improvement of sludge activity and the shock resistance of the reactor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 140, July 2013, Pages 211-219
نویسندگان
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