Removing and recovering gas-phase elemental mercury by CuxCO3-xO4 (0.75 ≤ x ≤ 2.25) in the presence of sulphur compounds

被引：17

作者：

Mei, Zhijian ^{[1
]}

Shen, Zhemin ^{[1
]}

Zhao, Qingjie ^{[2
]}

Yuan, Tao ^{[1
]}

Zhang, Yejian ^{[1
]}

Xiang, Fei ^{[1
]}

Wang, Wenhua ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China

[2] Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China

来源：

CHEMOSPHERE | 2008年 / 70卷 / 08期

基金：

中国国家自然科学基金;

关键词：

mercury; oxidation; SO2; metal oxide; flue gas;

D O I：

10.1016/j.chemosphere.2007.09.024

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Hg-0 oxidation ability and reusability Of CUxO3-xO4 were investigated in an attempt to improve SO2 anti-poisoning ability of metal oxide and produce more economic and effective sorbents for the control of Hg-0 emission from combustion processes. The influence of copper content on CuxCO3-xO4's (0.75 <= x <= 2.25) oxidation ability of Hg-0 in the presence Of SO2 was investigated. According to the X-ray diffraction, Brunauer-Emmett-Teller (BET) and mass balance analysis on mercury, we found that Cu1.5Co1.5O4 showed the highest S-BET and best Hg-0 oxidation ability. With continuous increase of x from 0.75 to 2.25, CuxCO3-xO4's SO2 anti-poisoning ability increased. The analysis results of the X-ray photoelectron spectroscopy manifested that the adsorptive mercury species on spent Cu1.5Co1.5O4 was HgO. The spent Cu1.5Co1.5O4 could be regenerated by thermal decomposition at 673 K and regenerated Cu1.5Co1.5O4 showed higher Hg-0 oxidation ability due to Hg-doping. Regenerated enrichment Hg-0 was collected using activated carbon at an ambient temperature to eliminate the secondary pollution. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1399 / 1404

页数：6

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