Journal
FUEL
Volume 233, Issue -, Pages 519-528Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2018.06.070
Keywords
Oxidation; NO; In situ Fenton; RSM; Optimization
Categories
Funding
- National Key Research and Development Program of China [2018YFB0605101]
- State's Key Project of Research and Development Plan [2018YFB060018]
- Key project of Science Foundation of Hebei Province [E2016202361]
- Joint Doctoral Training Foundation of HEBUT [2017HW003]
- Szechenyi 2020 [EFOP-3.6.1-16-2016-00015]
- Horizon 2020, Marie Curie Research and Innovation Staff Exchange (RISE) (MSCA-RISE-2014 (Flexi-pyrocat)) [643322]
- Marie Curie Actions (MSCA) [643322] Funding Source: Marie Curie Actions (MSCA)
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Nitrogen oxides are harmful to human health and environment. In this study, the oxidation removal of NO through a new in situ Fenton (IF) system was investigated. The independent effects of gas flow rate, initial pH, Fe2+/H2O2 molar ratio and reagent temperature were discussed preliminarily. For the first three factors, the oxidation efficiencies of NO increased with the increase of the values and decreased when the values beyond 600 mL/min, 3 and 0.05, respectively. However, the oxidation efficiencies monotonously decreased to some extent with the rise of reagent temperature from 25 degrees C to 85 degrees C. Also, the individual significance of the above factors and the interactive effects of them for oxidizing the NO were determined by the response surface methodology (RSM). The fitted quadratic equation indicated that only the Fe2+/H2O2 molar ratio had a positive independent effect on the oxidation removal of NO, whereas the reagent temperature showed the main negative independent effect. Besides, the interactive effects of them were revealed through the response surface and counter plots. Finally, the predicted maximum oxidation efficiency of NO was 90.10%, and then the related optimal conditions were computed as 570 mL/min gas flow rate, 2.85 initial pH, 0.047 Fe2+/H2O2 molar ratio and 47 degrees C reagent temperature theoretically.
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