Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration
In China, coal, often with a high level of sulfur, is always mixed with municipal solid waste (MSW) in waste incineration plants due to the low heating value and high moisture content of MSW. The influence of sulfur compounds on the volatilization of heavy metals in MSW is of great concern for China...
| Main Authors: | , , , , , , |
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| Format: | Article |
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American Chemical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/40077/ |
| _version_ | 1848795979751358464 |
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| author | Liu, Changqi Huang, Yaji Wang, Xinye Zhang, Shuaiyi Xia, Wenqing Sun, Chenggong Liu, Hao |
| author_facet | Liu, Changqi Huang, Yaji Wang, Xinye Zhang, Shuaiyi Xia, Wenqing Sun, Chenggong Liu, Hao |
| author_sort | Liu, Changqi |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In China, coal, often with a high level of sulfur, is always mixed with municipal solid waste (MSW) in waste incineration plants due to the low heating value and high moisture content of MSW. The influence of sulfur compounds on the volatilization of heavy metals in MSW is of great concern for China’s waste incineration plants. In this study, the continuous dynamic volatilization process of Pb and Cd is investigated by adding different forms of sulfur compounds, elemental sulfur (S), and sodium sulfate (Na2SO4), to the simulated MSW in a laboratory incinerator, at both 1 and 3 wt %, respectively. The experimental results show that the added S begins to affect the volatilization of Pb and Cd at about 700 °C; adding S can lead up to 49.6% reduction in the volatilization of Pb, as the produced sulfur dioxide is promoting the formation of a condensed sulfate phase, and part of Pb is fixed in the form of PbS in the bottom ash. But for Cd, adding S causes up to 15.9% increase in its volatilization as S seizes part of O2 in the air, which is conducive to forming the reducing atmosphere. In the reducing atmosphere, CdO can be easily reduced to Cd, which volatilizes more easily than CdO at high temperatures. In fact, in the reducing atmosphere, the volatilization of Cd far outweighs the volatilization of Pb at 700–800 °C. On the other hand, adding Na2SO4 almost has no influence on the volatilization of lead and cadmium below 900 °C. |
| first_indexed | 2025-11-14T19:40:42Z |
| format | Article |
| id | nottingham-40077 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:40:42Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-400772020-05-04T18:23:03Z https://eprints.nottingham.ac.uk/40077/ Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration Liu, Changqi Huang, Yaji Wang, Xinye Zhang, Shuaiyi Xia, Wenqing Sun, Chenggong Liu, Hao In China, coal, often with a high level of sulfur, is always mixed with municipal solid waste (MSW) in waste incineration plants due to the low heating value and high moisture content of MSW. The influence of sulfur compounds on the volatilization of heavy metals in MSW is of great concern for China’s waste incineration plants. In this study, the continuous dynamic volatilization process of Pb and Cd is investigated by adding different forms of sulfur compounds, elemental sulfur (S), and sodium sulfate (Na2SO4), to the simulated MSW in a laboratory incinerator, at both 1 and 3 wt %, respectively. The experimental results show that the added S begins to affect the volatilization of Pb and Cd at about 700 °C; adding S can lead up to 49.6% reduction in the volatilization of Pb, as the produced sulfur dioxide is promoting the formation of a condensed sulfate phase, and part of Pb is fixed in the form of PbS in the bottom ash. But for Cd, adding S causes up to 15.9% increase in its volatilization as S seizes part of O2 in the air, which is conducive to forming the reducing atmosphere. In the reducing atmosphere, CdO can be easily reduced to Cd, which volatilizes more easily than CdO at high temperatures. In fact, in the reducing atmosphere, the volatilization of Cd far outweighs the volatilization of Pb at 700–800 °C. On the other hand, adding Na2SO4 almost has no influence on the volatilization of lead and cadmium below 900 °C. American Chemical Society 2017-01-01 Article PeerReviewed Liu, Changqi, Huang, Yaji, Wang, Xinye, Zhang, Shuaiyi, Xia, Wenqing, Sun, Chenggong and Liu, Hao (2017) Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration. Energy & Fuels, 31 (1). pp. 847-853. ISSN 0887-0624 http://pubs.acs.org/doi/abs/10.1021/acs.energyfuels.6b01315 doi:10.1021/acs.energyfuels.6b01315 doi:10.1021/acs.energyfuels.6b01315 |
| spellingShingle | Liu, Changqi Huang, Yaji Wang, Xinye Zhang, Shuaiyi Xia, Wenqing Sun, Chenggong Liu, Hao Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration |
| title | Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration |
| title_full | Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration |
| title_fullStr | Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration |
| title_full_unstemmed | Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration |
| title_short | Dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated Municipal Solid Waste (MSW) influenced by sulfur compounds during incineration |
| title_sort | dynamic experimental investigation on the volatilization behavior of lead and cadmium in the simulated municipal solid waste (msw) influenced by sulfur compounds during incineration |
| url | https://eprints.nottingham.ac.uk/40077/ https://eprints.nottingham.ac.uk/40077/ https://eprints.nottingham.ac.uk/40077/ |