کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
145424 456340 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Establishment of a pretreatment method for tetracycline production wastewater using enhanced hydrolysis
ترجمه فارسی عنوان
ایجاد روش پیش تصفیه برای فاضلاب تولید تتراسایکلین با استفاده از هیدرولیز گسترده
کلمات کلیدی
فاضلاب تولید آنتی بیوتیک؛ هیدرولیز آنتی بیوتیک ها؛ کاهش فعالیت ضد میکروبی؛ تتراسایکلین؛ تکنولوژی پیش تصفیه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• The hydrolysis half-life of tetracycline was shortened by condition optimization.
• The antibacterial activity was reduced to a negligible level after hydrolysis.
• No anaerobic inhibition was found after enhanced hydrolysis pretreatment.

High concentrations of antibiotics in wastewater may inhibit the functions of biological treatment systems. Herein, we established a pretreatment method for tetracycline production wastewater using an enhanced hydrolysis process with the optimization of temperature and pH conditions. An increase of 10 °C accelerated the tetracycline hydrolysis rate by 2.22–2.74-fold, and the hydrolysis half-life of tetracycline was shortened by 3.23-fold when the pH value was increased from 3 to 11 at 85 °C. The tetracycline solution lost 80.3–97.8% of its antibacterial activity after 6 h hydrolysis at 85 °C in the pH range 3–11. The correlation factor between the antibacterial activity and the tetracycline concentration was 0.941, indicating that the antibacterial activity of the hydrolyzed tetracycline solutions was mainly attributed to tetracycline. The average specific methanogenic activity (SMA) of acetoclastic methanogens in the anaerobic inhibition test was decreased by 100% when treating either tetracycline solution (tetracycline concentration of 1000 mg L−1) or tetracycline production wastewater (tetracycline concentration: 800–1000 mg L−1). After enhanced hydrolysis pretreatment (pH 9, temperature 85 °C and hydrolysis for 6 h), no suppression phenomenon was found under the same conditions. The results of this study demonstrated that the proposed approach was effective in enhancing the hydrolysis of antibiotics, and may be effective as a pretreatment technology for antibiotic production wastewater.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 300, 15 September 2016, Pages 139–145
نویسندگان
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