High-efficiency removal of NOx by a novel integrated chemical absorption and two-stage bioreduction process using magnetically stabilized fluidized bed reactors

查看全文 作　　者：Zuoming [1]Zhou;Tianming [1]Lin;Guohua [1]Jing;Bihong [1]Lv;Yixuan [1]Liu

机构地区：[1]Department of Environmental Science & Engineering, Huaqiao University

出　　处：《Science China Chemistry》索引2015年第58卷第10期,共10页

基　　金：sponsored by the National Natural Science Foundation of China(21077035);the Program for New Century Excellent Talents in the University of China(NCET-11-0851);the Promotion Program for Young and Middle-aged Teacher of Huaqiao University(ZQN-YX104) 摘　　要：To enhance the bioregeneration of Fe(II)EDTA and to avoid the inhibition of the components in nitrogen oxides(NOx) scrubbing solution, a novel integrated process of metal chelate absorption and two-stage bioreduction was developed. In this process, magnetically stabilized fluidized beds(MSFB) were used as the bioreactors, and the phase diagram for the MSFB operation was determined. Factors including inlet NO, O2 and SO2 concentrations, magnetic field intensity, gas flow rate and liquid circulation rate, were studied experimentally to investigate their effects on NO removal. In addition, a mathematical model for NO removal in this integrated system was developed. The results revealed that the integrated system could be steadily operated with a high NO removal efficiency and elimination capacity, even under the condition of high NO and O2 shock-loading. The established model showed that NO removal efficiency was related to the spray column property and the active Fe(II)EDTA concentration, while the latter depends on the bioregeneration of the disabled absorbent in the MSFB. 关键词：磁稳定流化床还原过程化学吸收流化床反应器 NOx 二氧化硫浓度脱除液体循环速率

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High-efficiency removal of NOx by a novel integrated chemical absorption and two-stage bioreduction process using magnetically stabilized fluidized bed reactors

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