کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
643662 1457041 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reduction of nitrite by sulfamic acid and sodium azide from aqueous solutions treated by gliding arc discharge
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Reduction of nitrite by sulfamic acid and sodium azide from aqueous solutions treated by gliding arc discharge
چکیده انگلیسی

Nitrous and nitric acids form in aqueous solutions exposed to a gliding arc discharge burning in humid air. The anions interfere when the concentration of particular solutes such as pollutants must be determined. In particular they falsify the COD measurements and spectral investigations and thus the efficiency of the plasma treatment in pollutant abatement. The nitrite anions must be thus removed, which require specific reagents. The influence of parameters such as solution pH and [reducers]/[NO2−] ratio on the reduction reaction was evaluated. The reduction of nitrite into N2 either by sulfamic acid or sodium azide is a first-order pH-dependant reaction with regard to nitrite and reducers (k1 = 2.93 × 10−1 m3 kmol−1 s−1; k2 = 6.21 × 10−1 m3 kmol−1 s−1, respectively). Sodium azide is thus more reactive than sulfamic acid.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 50, Issue 3, 15 July 2006, Pages 373–379
نویسندگان
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