کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4979266 1453022 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elemental mercury removal from flue gas by CoFe2O4 catalyzed peroxymonosulfate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Elemental mercury removal from flue gas by CoFe2O4 catalyzed peroxymonosulfate
چکیده انگلیسی


- A magnetic CoFe2O4 catalyst was firstly used in air pollutant control.
- A new method of removing Hg0 was developed based the catalytic oxidation process.
- Removal mechanism was proposed according to the characterizations and literatures.

A magnetic cobalt ferrite (CoFe2O4) catalyst was prepared by sol-gel method, and characterized by a X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Brunauer-Emmett-Teller (BET) and hysteresis loop method. The chemical states on surface of the fresh and spent catalysts were analyzed by a X-ray photoelectron spectroscopy (XPS). The experiments of elemental mercury (Hg0) removal from flue gas were conducted in a laboratory scale using activated peroxymonosulfate (PMS) catalyzed by CoFe2O4, and the effects of the dosage of catalyst, the concentration of PMS, initial solution pH and reaction temperature on mercury removal efficiency were investigated. The average removal efficiency of Hg0 could maintain steady at 85% in 45 min when the concentrations of CoFe2O4 and PMS were 0.288 g/L and 3.5 mmol/l respectively, solution pH was 7 and reaction temperature was 55 °C. In order to speculate the reaction mechanism, ethyl alcohol and isopropyl alcohol were used as the quenching agents to indirectly prove the existence of SO4− and OH.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 341, 5 January 2018, Pages 228-237
نویسندگان
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