کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6584523 | 456358 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of operational modes on nitrogen removal and nitrous oxide emission in the process of simultaneous nitrification and denitrification
ترجمه فارسی عنوان
تأثیر حالت های عملیاتی بر حذف نیتروژن و انتشار اکسید نیتروژن در فرایند نیتریفیکاسیون همزمان و دینتری سازی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The effects of operational modes (fully aerobic mode and anoxic-aerobic mode) on simultaneous nitrification and denitrification (SND) process were investigated to reveal the different characteristics of nitrogen removal and nitrous oxide (N2O) emission. Results indicated that total nitrogen (TN) removal and SND efficiencies under anoxic-aerobic mode increased by 17.8% and 10.1% in comparison with fully aerobic mode. Furthermore, N2O emission in the anoxic-aerobic SND was much lower than in fully aerobic SND. The amount of N2O emitted per cycle in the fully aerobic SND was 21.9 ± 7.1% of the removed TN, which was three times higher than 7.0 ± 1.6% observed in the anoxic-aerobic SND. Denitrification by nitrifiers was the main source of N2O emission in both systems. High-throughput pyrosequencing analysis revealed a greater abundance of Nitrosomonas sp. and Mesorhizobium sp. in fully aerobic SND than anoxic-aerobic SND, which were closely associated with N2O emissions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 280, 15 November 2015, Pages 549-557
Journal: Chemical Engineering Journal - Volume 280, 15 November 2015, Pages 549-557
نویسندگان
Fang Zhang, Ping Li, Mengsi Chen, Jinhua Wu, Nengwu Zhu, Pingxiao Wu, Penchi Chiang, Zhiqiang Hu,