کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7854993 | 1508880 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of activated carbon on micropollutans degradation by ionizing radiation
ترجمه فارسی عنوان
نقش کربن فعال در تخریب میکروپولولانت ها توسط اشعه یونیزه شدن
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کلمات کلیدی
DTZACSpHPZCSBETAOPs - AOP هاTotal pore volume - حجم منافذ مجموعAbsorbed dose - دوز جذب شدهsodium diatrizoate - دیاتریتوز سدیمX-ray photoelectron spectroscopy - طیف سنجی فوتوالکتر اشعه ایکسXPS - طیف نگاری فوتوالکترونی اشعه ایکسAdvanced oxidation processes - فرایندهای اکسیداسیون پیشرفتهActivated carbons - کربن فعالhigh performance liquid chromatography - کروماتوگرافی مایع با کارایی بالاHPLC - کروماتوگرافی مایعی کارا
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
The objective of this study was to analyze the influence of the presence of activated carbon on the degradation of the triiodinated contrast medium diatrizoate (DTZ) by the simultaneous use of gamma radiation and activated carbon. Four commercial activated carbons (Ceca, Witco, Sorbo, and Merck) with different textural and chemical characteristics were used for this purpose. The percentage DTZ removal obtained was considerably higher with the gamma radiation/activated carbon (GM/AC) system than with radiolysis in the absence of activated carbon, and it depended on the specific activated carbon employed. First, we optimized the amount of activated carbon required to maximize the amount of DTZ removed by the GM/AC system (0.06Â g). The degradation constants were higher with the GM/AC system than with radiolysis alone, evidencing a synergic effect that favors pollutant removal. This synergic effect is independent of the textural but not the chemical characteristics of the activated carbon, observing a higher synergic activity for carbons with a higher surface content of oxygen, specifically quinone groups. We also highlight that the synergic effect of the activated carbon requires adsorbent-adsorbate electrostatic interaction and is absent when this interaction is hindered.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 67, February 2014, Pages 288-299
Journal: Carbon - Volume 67, February 2014, Pages 288-299
نویسندگان
Inmaculada Velo-Gala, Jesús J. López-Peñalver, Manuel Sánchez-Polo, José Rivera-Utrilla,