کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8852725 | 1618778 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthetic hospital wastewater treatment by coupling submerged membrane bioreactor and electrochemical advanced oxidation process: Kinetic study and toxicity assessment
ترجمه فارسی عنوان
تصفیه فاضلاب مصنوعی با استفاده از ترکیب بیوراکتور غشایی زیر آب و فرایند اکسیداسیون پیشرفته الکتروشیمیایی: مطالعه جنبشی و ارزیابی سمیت
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کلمات کلیدی
فاضلاب بیمارستان، آلاینده های دارویی، فرایند اکسیداسیون پیشرفته الکتروشیمیایی، بیوراکتور غشایی، آزمون سمیت دفاشی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
In this work, the combination of membrane bioreactor (MBR) and electro-oxidation (EO) process was studied for the treatment of a synthetic hospital wastewater fortified with four pharmaceutical pollutants namely carbamazepine (CBZ), ibuprofen (IBU), estradiol (E-E) at a concentration of 10 μg Lâ1 venlafaxine (VEN) at 0.2 μg Lâ1. Two treatment configurations were studied: EO process as pre-treatment and post-treatment. Wastewater treatment with MBR alone shows high removal percentages of IBU and E-E (â¼90%). Unlikely for CBZ and VEN, a low elimination percentage (â¼10%) was observed. The hydraulic and the solid retention times (HRT and SRT) were 18 h and 140 d respectively, while the biomass concentration in the MBR was 16.5 g Lâ1. To enhance pharmaceuticals elimination, an EO pretreatment was conducted during 40 min at 2 A. This configuration allowed a 92% removal for VEN, which was far greater than both treatments alone, with lower than 30% and 50% for MBR and EO, respectively. The MBR-EO coupling (EO as post-treatment) allows high removal percentages (â¼97%) of the four pharmaceutical pollutants after 40 min of treatment at a current intensity of 0.5 A with Nb/BDD as electrodes. This configuration appears to be very effective compared to the first configuration (EO-MBR) where EO process is used as a pre-treatment. Toxicity assessment showed that the treated effluent of this configuration is not toxic to Daphnia magna except at 100% v/v. The MBR-EO coupling appears to be a promising treatment for contaminated hospital effluents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 193, February 2018, Pages 160-169
Journal: Chemosphere - Volume 193, February 2018, Pages 160-169
نویسندگان
Yassine Ouarda, Bhagyashree Tiwari, Antonin Azaïs, Marc-Antoine Vaudreuil, Sokhna Dieng Ndiaye, Patrick Drogui, Rajeshwhar Dayal Tyagi, Sébastien Sauvé, Mélanie Desrosiers, Gerardo Buelna, Rino Dubé,