کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5747270 1618793 2017 8 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Short CommunicationDynamics of antibiotic resistance genes in microbial fuel cell-coupled constructed wetlands treating antibiotic-polluted water
ترجمه فارسی عنوان
ارتباطات کوتاه مدت ژنهای مقاومتی آنتی بیوتیک در تالاب های ساخته شده با سلول های سوختی میکروبی، درمان آلودگی با آنتی بیوتیک ها
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Most ARGs in anode layer were higher than those in cathode and middle layers.
- ARGs in biofilm illustrated an obvious increase during treatment periods.
- No significant correlation between ARGs and 16S rRNA except for sulI and tetW genes.
- Significant correlations were observed among the most of ARGs copy numbers.

Microbial fuel cell-coupled constructed wetlands (CW-MFCs) use electrochemical, biological, and ecological functions to treat wastewater. However, few studies have investigated the risks of antibiotic resistance genes (ARGs) when using such systems to remove antibiotics. Therefore, three CW-MFCs were designed to assess the dynamics of ARGs in filler biofilm and effluent over 5000 h of operation. The experimental results indicated that relatively high steady voltages of 605.8 mV, 613.7 mV, and 541.4 mV were obtained at total influent antibiotic concentrations of 400, 1,000, and 1600 μg L−1, respectively. The 16S rRNA gene level in the cathode layer was higher than those in the anode and two middle layers, but the opposite trend was observed for the sul and tet genes. The relative abundance of the three tested sul genes were in the order sulI > sulII > sulIII, and those of the five tet genes were in the order tetA > tetC > tetW > tetO > tetQ. The levels of sul and tet genes in the media biofilm showed an increase over the treatment period. The effluent water had relatively low abundances of sul and tet genes compared with the filler biofilm. No increases were observed for most ARGs over the treatment period, and no significant correlations were observed between the ARGs and 16S rRNA gene copy numbers, except for sulI and tetW in the effluent. However, significant correlations were observed among most of the ARG copy numbers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 178, July 2017, Pages 548-555
نویسندگان
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