标题：Study on the removal of nitric oxide (NO) by dual oxidant (H2O2/S2O82-) system作者：Wang, Zhiping; Wang, Zuwu; Ye, Yin; Chen, Na; Li, Haiwei

来源出版物：CHEMICAL ENGINEERING SCIENCE 卷：145 页码：133-140 DOI: 10.1016/j.ces.2016.02.018 出版年：MAY 12 2016

摘要：In this paper, the removal of NO with dual oxidant (H2O2/S2O82-) system was studied in a bubble column reactor. The contrast experiment for a different system showed that the combination of Na2S2O8 and H2O2 had a significant synergistic effect on NO removal. The effects of Na2S2O8 concentration (0.020.2 mol/L), H2O2 concentration (0.25-2 %), molar ratio of H2O2 to Na2S2O8 (0.3:0.2-0.3:0.02 mol/mol), reaction temperature (21-70 degrees C) and initial pH value (1-11) on the removal efficiency of NO were investigated. The NO removal efficiency increased with the increase of Na2S2O8 and H2O2 concentrations. However, above 1 % hydrogen peroxide and 0.1 mol/L persulfate, the rate of increase in NO removal efficiency gradually slowed down. The optimal molar ratio of H2O2 to Na2S2O8 is 0.3:0.1 mol/mol. The optimum temperature for the thermal activation of dual oxidant (H2O2/S2O82-) system was 50 degrees C. The highest NO removal efficiency (82 %) was obtained at pH 11. The final ionic products were analyzed by ion chromatography. Combined with N material balance, NO3- was the final ionic product in spent reaction solution. A preliminary reaction mechanism for the removal of NO in dual oxidant (H2O2/S2O82-) solution was deduced. This dual oxidant (H2O2/S2O82-) system proved to be a promising reagent for wet denitration.

入藏号：WOS:000373407400013

文献类型：Article

语种：English

作者关键词：Nitric oxide, Oxidation, Sulfate radicals, Hydroxyl radicals, Wet scrubbing

扩展关键词：ADVANCED OXIDATION PROCESS; BUBBLE-COLUMN REACTOR; FIRED FLUE-GAS; HYDROGEN-PEROXIDE; SODIUM PERSULFATE; AQUEOUS-SOLUTIONS; POLYCHLORINATED-BIPHENYLS; SIMULTANEOUS ABSORPTION; ACTIVATED PERSULFATE; SULFUR-DIOXIDE

通讯作者地址：Wang, ZW, Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：hjgcapc@163.com

地址： [Wang, Zhiping; Wang, Zuwu; Ye, Yin; Chen, Na; Li, Haiwei] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

研究方向：Engineering

ISSN：0009-2509

eISSN: 1873-4405

影响因子（2014）：2.337