کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6580448 1422941 2018 45 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Persulfate activation in gas phase surface discharge plasma for synergetic removal of antibiotic in water
ترجمه فارسی عنوان
فعال سازی پرزفولت در پلاسما سطح تخلیه فاز گاز برای حذف سینرژیک آنتی بیوتیک در آب
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
A process of persulfate (PS) activation in gas phase surface discharge plasma was studied to facilitate the removal of tetracycline (TC) in water. PS was introduced into the discharge reactor, and the effects of PS added dosage and applied voltage on TC removal were determined. The results showed that PS addition exhibited significant synergistic effect, promoting the degradation efficiency and removal rate of TC. Increasing the applied voltage was beneficial to the enhancement of TC decomposition. The removal efficiency and first order kinetic constant were achieved 87.5% and 0.232 min−1 at a PS addition dosage of 20:1 (molar ratio of PS to TC) and a discharge voltage of 7 kV after 15 min treatment, respectively. Especially the calculated synergistic factor achieved 1.856, indicating the synergistic effect was existed. Besides, the removal of the synergistic system was influenced remarkably by the other operation parameters, including air flow rate, initial TC concentration, and initial pH value. The mineralization of TC and intermediates produced during the synergistic process was explored by UV-vis spectrogram and TOC analyses. The synergistic effect could be explained by the enhanced formation of hydroxyl and sulfate radicals that were generated from the activation of PS in discharge plasma. The evolution of the main degradation byproducts in the synergism process was investigated by HPLC-MS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 337, 1 April 2018, Pages 446-454
نویسندگان
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