CAJ | 학술논문

通过活性炭负载CuO和CeO_2来制备吸附剂,采用固定床吸附方式,在不同反应条件下对吸附剂的吸附性能进行测试,筛选出去除效率最好的吸附剂,并通过BET和XRD对吸附剂的理化性质进行分析.结果表明,CuO和CeO_2的加入大大改变了原活性炭的比表面积和孔结构,改善了活性炭的吸附性能.CuO-CeO_2/AC中CuO和CeO_2质量比不同,对汞的去除效率也不同,在1:2时去除效率最好;CuO-CeO_2/AC中所负载的CuO和CeO的总量为5%时,能大大促进汞的吸附效率,增长有效吸附时间;CuO-CeO_2/AC对汞的吸附性能随反应温度的增加呈先增加后减小的趋势,在80℃时达到最大值.
통과활성탄부재CuO화CeO_2래제비흡부제,채용고정상흡부방식,재불동반응조건하대흡부제적흡부성능진행측시,사선출거제효솔최호적흡부제,병통과BET화XRD대흡부제적이화성질진행분석.결과표명,CuO화CeO_2적가입대대개변료원활성탄적비표면적화공결구,개선료활성탄적흡부성능.CuO-CeO_2/AC중CuO화CeO_2질량비불동,대홍적거제효솔야불동,재1:2시거제효솔최호;CuO-CeO_2/AC중소부재적CuO화CeO적총량위5%시,능대대촉진홍적흡부효솔,증장유효흡부시간;CuO-CeO_2/AC대홍적흡부성능수반응온도적증가정선증가후감소적추세,재80℃시체도최대치.
By using activated carbons loaded with CuO and CeO_2 to prepare adsorbents, a bench-scale test was designed to assess the efficiency of mercury adsorbents with a fixed bed under different conditions and to screen out the best adsorbent, BFT and XRD were apllied to determine the physicochemical characteristics of the adsorbents. The results indicated that, loaded with CuO and CeO_2 , the surface functional groups and pore struc-tures of the activated carbon samples modified and the adsorbability was also improved. Adsorption capability of CuO-CeO_2/AC varies with the different quality ratios of CuO to CeO_2, which peaks in the ratio of 1: 2. The re-moval efficiency of the mercury will be enchanced and effectual adsorption time will be extended when the per-centage of CuO-CeO_2 in the adsorbent gets to 5% . The removal efficiency of the mercury increases when the CuO-CeO_2/AC is applied and then decreases with the ascending of temperature, peaking in 80 ℃ .