| Title: | Elimination of chloroaromatic congeners on a commercial V(2)O(5)-WO(3)/TiO(2) catalyst: The effect of heavy metal Pb |
| Author(s): | Weng X; Xue Y; Chen J; Meng Q; Wu Z; |
| Address: | "Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 310058, Hangzhou, PR China; Zhejiang Provincial Engineering Research Centre of Industrial Boiler & Furnace Flue Gas Pollution Control, 310058, Hangzhou, PR China. Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 310058, Hangzhou, PR China. School of Civil and Environmental Engineering, Ningbo University, 315211, Ningbo, PR China. Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 310058, Hangzhou, PR China; Zhejiang Provincial Engineering Research Centre of Industrial Boiler & Furnace Flue Gas Pollution Control, 310058, Hangzhou, PR China. Electronic address: zbwu@zju.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2019.121705 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Catalytic elimination of chlorinated volatile organic compounds (CVOCs) from the industrial sources of emission usually confronted with catalyst deactivation and secondary pollution. As a widely used catalyst in selective catalytic reduction (SCR) of nitric oxides, V(2)O(5)-WO(3)/TiO(2) catalysts (denoted as VWT) have been also applied for eliminating the CVOCs, especially those from the municipal solid waste (MSW) incineration. However, the effect of heavy metals on the reaction characteristics of this catalyst is lack of exploration, which has been considered to be a main cause for catalyst deactivation. Herein, we investigated the effect of lead (Pb), a critical heavy meal in the flue gas of MSW incineration, on the catalytic elimination of chlorobenzene (CB) over the VWT catalyst. Variations of catalytic activity, CO(2)/HCl selectivity and chlorine adsorption/desorption behaviors were evaluated. In particular, the reaction byproducts with and without Pb loadings were qualitatively and quantitatively analyzed. It was noted that the loading of excessive Pb could change the reaction route over the VWT catalyst, leading to low CB oxidation efficiency and CO(2) selectivity. However, these Pb spices likely acted as 'a sink' to capture the dissociated Cl that hindered the electrophilic chlorination reaction, and avoided the formation of more toxic polychlorinated byproducts" |
| Keywords: | "Chlorobenzene Pb, heavy metal V(2)O(5)-WO(3)/TiO(2) VOCs oxidation;" |
| Notes: | "PubMed-not-MEDLINEWeng, Xiaole Xue, Yehui Chen, Jingkun Meng, Qingjie Wu, Zhongbiao eng Research Support, Non-U.S. Gov't Netherlands 2019/11/26 J Hazard Mater. 2020 Apr 5; 387:121705. doi: 10.1016/j.jhazmat.2019.121705. Epub 2019 Nov 18" |
