کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7066954 | 1459882 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Response of greenhouse gas emissions and microbial community dynamics to temperature variation during partial nitrification
ترجمه فارسی عنوان
پاسخ گسیل گازهای گلخانه ای و پویایی جامعه های میکروبی به تغییرات دما در طی نیتروفیزاسیون جزئی
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کلمات کلیدی
انتشار گازهای گلخانه ای، نیتریفیکاسیون جزئی درجه حرارت، دینامیک جامعه میکروبی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
This study investigated the greenhouse gas emission characteristics and microbial community dynamics with the variation of temperature during partial nitrification. Low temperature weakened nitrite accumulation, and partial nitrification would shift to complete nitrification easily at 15â¯Â°C. Based on CO2 equivalents (CO2-eq), partial nitrification process released 2.7â¯g of greenhouse gases per gMLSS per cycle, and N2O accounted for more than 98% of the total CO2-eq emission. The total CO2-eq emission amount at 35â¯Â°C was 45.6% and 153.4% higher than that at 25â¯Â°C and 15â¯Â°C, respectively. During partial nitrification, the microbial community diversity greatly declined compared with seed sludge. However, the diversity was enhanced at low temperature. The abundance of Betaproteobacteria at class level increased greatly during partial nitrification. Proteobacteria abundance declined while Nitrospira raised at low temperature. The nosZ community abundance was not affected by temperature, although N2O emission was varied with the operating temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Brought to you by:GAYATRI VIDYA PARISHAD COLLEGE OF ENGINEERING for Women due by 31 Dec 2017
Journal: Bioresource Technology - Brought to you by:GAYATRI VIDYA PARISHAD COLLEGE OF ENGINEERING for Women due by 31 Dec 2017
نویسندگان
Wenlin Jia, Yunfan Chen, Jian Zhang, Cong Li, Qian Wang, Guangchao Li, Weihua Yang,