Removal of Hg0 from Flue Gas Using Two Homogeneous Photo-Fenton-Like Reactions

被引：58

作者：

Liu, Yangxian ^{[1
]}

Zhang, Jun ^{[2
]}

Yin, Yanshan ^{[3
]}

机构：

[1] Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Southeast Univ, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing 210096, Jiangsu, Peoples R China

[3] Changsha Univ Sci & Technol, Dept Hunan Prov, Key Lab Efficient & Clean Energy Utilizat Educ, Changsha 410000, Hunan, Peoples R China

来源：

AICHE JOURNAL | 2015年 / 61卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Hg-0; removal; photo-Fenton-like reactions; flue gas; simultaneous removal of Hg-0; NO; and SO2; TRANSFER-REACTION KINETICS; ELEMENTAL MERCURY; PHOTOCHEMICAL REMOVAL; COAL-COMBUSTION; NO ABSORPTION; UV/H2O2; OXIDATION; PARAMETERS;

D O I：

10.1002/aic.14727

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Removal of Hg-0 using two homogeneous Photo-Fenton-Like reactions was first investigated in a photochemical reactor. Effects of process parameters on Hg-0 removal were studied. Free radical and reaction products were analyzed. Removal pathways of Hg-0 were discussed. Simultaneous removal of Hg-0, NO, and SO2 is also studied briefly. The results show that UV power, wavelength, H2O2 concentration, and solution pH have great effects on Hg-0 removal. Hg-0, and SO2 concentrations, solution temperature, Fe3+, Cu2+, CO32-, and HCO3- concentrations also have significant effects on Hg-0 removal. However, concentrations of CO2, NO, O-2, Cl-, NO3-, SO42-, SiO2, Al2O3, and Fe2O3 only have slight effects on Hg-0 removal. Hg-0/NO/SO2 can be simultaneously removed by Photo-Fenton-Like reactions. center dot OH was captured, and SO42-/NO3-/Hg2+ were also detected. Removals of Hg-0 by photochemical oxidation and center dot OH oxidation play a major role, and removal of Hg-0 by H2O2 oxidation only plays a secondary role in removal of Hg-0. (C) 2015 American Institute of Chemical Engineers

引用

页码：1322 / 1333

页数：12

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