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Dioxin emission and distribution from cement kiln co-processing of hazardous solid waste
Ye, Wen-Wen; Cai, Peng-Tao; Zhan, Ming-Xiu; Jiao, Wen-Tao; Xu-Xu; Fu, Jian-Ying; Chen, Tong; Li, Xiao-Dong
2022-07
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
Volume29Issue:35Pages:53755-53767
AbstractCement kiln collaborative disposal technology can not only dispose of hazardous waste but also provide energy for the cement industry. However, the addition of hazardous waste may promote the formation of dioxins in cement kilns. In this study, typical hazardous solid wastes, such as solidified fly ash, electroplating sludge, and industrial residue, were co-processed in a cement kiln with different feeding positions and different feeding amounts. The concentrations of dioxins in the flue gas, clinker, and precalciner furnace slag were investigated. The effect of adding mixed hazardous solid waste on the formation of dioxin was also studied. The results showed that the concentration of dioxin in the flue gas without added hazardous waste was 1.57 ng/m(3), and the concentration varied from 1.03 to 6.49 ng/m(3) after the addition of hazardous waste. In addition, the concentration of dioxin in the flue gas and solid samples increased substantially when the co-processing ratio doubled. The large amount of Cu in solidified fly ash promoted the formation of dioxins, while the higher S content in the electroplating sludge suppressed the formation of dioxins. Compared with the addition of single hazardous waste, the concentration of dioxin in precalciner furnace slag increases by about 300%. Furthermore, the distributions of isomers in the clinker and precalciner furnace slag were similar. 1,2,3,4,6,7,8-HpCDD and OCDD accounted for a large proportion of the mass concentration, and the contribution rate ranged from 48.7 to 82.0%. Most importantly, correlation analysis showed that the concentration of dioxin was closely related to the copper content, hazardous waste types and additive proportion, with correlation coefficients of 0.79, 0.83, and 0.89, respectively. This study provides a basis for exploring the high environmental benefits of disposing of hazardous solid waste by co-processing in cement kilns.
Department土壤环境科学与技术实验室 ; 土壤环境科学与技术实验室
KeywordDIBENZO-P-DIOXINS FLY-ASH SCALE INCINERATION POLLUTANTS PCDD/FS REFUSE DESTRUCTION BOTTOM FUELS
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47757
Collection土壤环境科学实验室
Affiliation1.China Jiliang Univ, Coll Metrol & Measurement Engn, Hangzhou 310018, Zhejiang, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, China 18 Shuangqing Rd, Beijing 100085, Peoples R China
3.Zhejiang Univ, Inst Thermal Power Engn, State Key Lab Clean Energy Utilizat, Hangzhou, Peoples R China
Recommended Citation
GB/T 7714
Ye, Wen-Wen,Cai, Peng-Tao,Zhan, Ming-Xiu,et al. Dioxin emission and distribution from cement kiln co-processing of hazardous solid waste[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2022,29(35):53755-53767.
APA Ye, Wen-Wen.,Cai, Peng-Tao.,Zhan, Ming-Xiu.,Jiao, Wen-Tao.,Xu-Xu.,...&Li, Xiao-Dong.(2022).Dioxin emission and distribution from cement kiln co-processing of hazardous solid waste.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,29(35),53755-53767.
MLA Ye, Wen-Wen,et al."Dioxin emission and distribution from cement kiln co-processing of hazardous solid waste".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 29.35(2022):53755-53767.
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