Yunnan Pu’er tea stem was chosen as carbon source,in order to getting inexpensive adsorption catalyst for simultaneous removal of nitrogen oxides and elemental mercury.Tea stem biochars with different impregnating ratio of cerium dioxide-copper oxide (CeO2-CuO) were prepared by incipient impregnation method.The adsorption catalyst was characterized using nitrogen (N2) adsorption-desorption,scanning electron microscopy (SEM) and X-ray diffraction (XRD).The catalysts’ performance of simultaneous removal was investigated in fixed-bed system with the condition of simulated flue gas in the temperature range of 100℃ to 300℃.The results showed that when the impregnation ratio of CeO2 and CuO was 4wt% (mass percentage),respectively,the obtained tea stem biochar had a degradation rate of 82.3% for nitric oxide (NO) at 300℃,the degradation rate of elemental mercury (Hg0) was as high as 93.0% at 100℃.
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基金资助
昆明理工大学校测试基金(20150491,2016M20152207038)
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