کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11029951 1646403 2018 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
System performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress
ترجمه فارسی عنوان
عملکرد سیستم و جانشینی جامعه میکروبی در یک راکتور نسبی نیتروژن زیستی در واکنش به استرس شوری
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The system performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress was conducted. It was found that the NH4+-N removal efficiency decreased from 98.4% to 42.0% after salinity stress increased to 20 g/L. Specific oxygen uptake rates suggested that AOB activity was more sensitive to the stress of salinity than that of NOB. Protein and polysaccharides contents showed an increasing tendency in both LB-EPS and TB-EPS after the salinity exposure. Moreover, EEM results indicated that protein-like substances were the main component in LB-EPS and TB-EPS as self-protection in response to salinity stress. Additionally, humic acid-like substances were identified as the main component in the effluent organic matter (EfOM) of partial nitrification biofilm, whereas fulvic acid-like substances were detected at 20 g/L salinity stress. Microbial community analysis found that Nitrosomonas as representative species of AOB were significantly inhibited under high salinity condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 270, December 2018, Pages 512-518
نویسندگان
, , , , , , , , ,