کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4996654 1459897 2018 8 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Towards physicochemical and biological effects on detachment and activity recovery of aging biofilm by enzyme and surfactant treatments
ترجمه فارسی عنوان
به سوی اثرات فیزیک و شیمیایی و بیولوژیکی بر جداسازی و بازیابی بیوفیلم های پیری با روش های آنزیمی و سورفاکتانت
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کلمات کلیدی
بازیابی بیوفیلم پیری؛ آنزیم؛ سورفاکتانت؛ اثر فیزیکوشیمیایی؛ اثر بیولوژیک؛
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- Detachment of aging biofilm mainly attributed by EPS solubilization and dispersion.
- Activity recovery of aging biofilm through biological effects of dominant bacteria.
- Phosphorus metabolism related bacteria were responsible for biofilm regeneration.
- Rhamnolipid performed best on aging biofilm detachment and regeneration.

In order to explore physicochemical and biological effects on detachment and activity recovery of aging biofilm by enzyme and surfactant treatments, two kinds of biofilm processes, i.e. biological aeration filter (BAF) and moving bed biofilm reactor (MBBR), and multiple indicators including water quality, biofilm morphology, activity and microbial community structure, were employed. Results showed that detachment of aging biofilm was mainly attributed by extracellular polymeric substance (EPS) solubilization and dispersion, and activity recovery of aging biofilm mainly depended on biological effects of dominant bacteria. Phosphorus metabolism related bacteria, such as Microbacterium and Micropruina, were responsible for BAF biofilm regeneration. More abundant microbial community structure of MBBR regenerated biofilm was found, and biofilm activity was not only related to phosphorus metabolism related bacteria, but also to denitrifying bacteria. Rhamnolipid performed best on aging biofilm detachment and regeneration, giving a clue for effective activation of aging biofilm in wastewater treatment systems.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 247, January 2018, Pages 319-326
نویسندگان
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