华东理工大学学报（自然科学版）2017，Vol.43Issue(5)：647-654,676,9.DOI:10.14135/j.cnki.1006-3080.2017.05.008
中空纤维膜反应器结合芬顿试剂脱除燃煤烟气中的Hg0
Removal of Hg0 from Simulated Flue Gas by Fenton Process in A Hollow Fiber Reactor
于明磊 1马良 1张艳红 1汪华林 1于新海 2杨雪晶3
作者信息
- 1. 华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室,上海200237
- 2. 华东理工大学化学工程联合国家重点实验室,上海200237
- 3. 华东理工大学机械与动力工程学院,上海200237
- 折叠
摘要
Abstract
A novel hollow fiber reactor was used to remove Hg0 from simulated flue gas by Fenton process.The effects of several parameters and impurity gases such as SO2 、NO and O2 on removal efficiency of Hg0 by Fenton process were investigated.The results indicated that the Hg0 removal efficiency increased first and then decreased upon increasing H2O2 concentration,Fe2+ concentration,initial pH value of solution,and temperature.The optimum conditions were:H2O2 concentration of 6 mmol/L,Fe2+ concentration of 9 mmol/L,initial pH value of solution of 2.5,and temperature of 20 ℃.The increase in liquid-gas ratio and the residence time (the decrease of gas flow rate) enhanced the removal of Hg0,while the removal efficiency didn't increase any more when the liquid-gas ratio was over 0.11.Hg0 removal efficiency exceeded 85 ％ when gas flow rate was 0.6 L/min.SO2 and NO can inhibit the removal of Hg0,while O2 has no obvious impact on Hg0 removal efficiency.In the hollow fiber reactor,the specific surface area (a) and mass transfer-reaction coefficient (kL,kG) between Fenton reagent and Hg0 were 270.29 m-1,8.13×10-4 m/s,0.786×10-6 mol/(m2 · s· Pa) (20 ℃),respectively.关键词
中空纤维膜反应器/芬顿反应/脱汞Key words
hollow fiber/Fenton reaction/Hg0 removal分类
资源环境引用本文复制引用
于明磊,马良,张艳红,汪华林,于新海,杨雪晶..中空纤维膜反应器结合芬顿试剂脱除燃煤烟气中的Hg0[J].华东理工大学学报（自然科学版）,2017,43(5):647-654,676,9.
