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Volatilization and leaching behavior of heavy metals in MSW incineration fly ash in a DC arc plasma furnace
Ma, Wenchao; Fang, Yunhao; Chen, Dongmei; Chen, Guanyi; Xu YX(徐永香); Sheng HZ(盛宏至); Zhou, Zhihua; Chen, GY (reprint author), Tianjin Univ, Sch Environm Sci & Engn, State Key Lab Engines, Tianjin 300072, Peoples R China.
Source PublicationFUEL
2017-12-15
Volume210Pages:145-153
ISSN0016-2361
AbstractThree fly ash samples collected from different waste incinerators were vitrified using a direct current arc plasma furnace at 1250-1400 degrees C. The influence of water-wash extraction and wrapping pretreatment on the volatilization and leaching behavior of heavy metals was investigated. Results showed: After thermal arc plasma treatment, the volume reduction and weight loss of fly ash were in the range of 68.7-82.2% and 23.8-56.7%, respectively. The residual fractions (wt.%) of heavy metals in slag are in the following sequence: Cr < Ni < Cd < Pb < Cu < Zn. Water-washing could reduce the volatilization rate of heavy metals due to some volatile salts removed by washing, while wrapping of fly ash could most effectively resist heavy metals against volatilizing, especially for Zn and Ni. The possible CaO - Al2O3 - SiO2 (CAS) ratio for successful melting of fly ash is suggested to be CaO in range of 20-48%, Al2O3 in range of 10-15%, and SiO2 in range of 40-65%. Moreover, toxicity characteristic leaching procedure results showed that the leaching of heavy metals in slags was much lower than the standard limit of toxicity characteristic leaching procedure (TCLP).
KeywordMsw Incineration Fly Ash Heavy Metals Volatilization And Leaching Behavior Dc Arc Plasma Cao - Al2o3 - Sio2 (Cas)
DOI10.1016/j.fuel.2017.07.091
Indexed BySCI ; EI
Language英语
WOS IDWOS:000413759500017
WOS KeywordSOLID-WASTE INCINERATOR ; WATER-EXTRACTION ; SOLIDIFICATION/STABILIZATION ; VITRIFICATION ; AGENTS ; SIO2
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationNational Science and Technology Support Program of China(2014BAC02B03) ; High Technology Support Project of Tianjin(16PTGCCX00170 ; Tianjin Research Program of Application and Advanced Technology(15JCQNJC06600) ; 16YFXTSF00540)
DepartmentLHD应用等离子体力学(CPCR)
Classification一类
Ranking3
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/71935
Collection高温气体动力学国家重点实验室
Corresponding AuthorChen, GY (reprint author), Tianjin Univ, Sch Environm Sci & Engn, State Key Lab Engines, Tianjin 300072, Peoples R China.
Recommended Citation
GB/T 7714
Ma, Wenchao,Fang, Yunhao,Chen, Dongmei,et al. Volatilization and leaching behavior of heavy metals in MSW incineration fly ash in a DC arc plasma furnace[J]. FUEL,2017,210:145-153.
APA Ma, Wenchao.,Fang, Yunhao.,Chen, Dongmei.,Chen, Guanyi.,徐永香.,...&Chen, GY .(2017).Volatilization and leaching behavior of heavy metals in MSW incineration fly ash in a DC arc plasma furnace.FUEL,210,145-153.
MLA Ma, Wenchao,et al."Volatilization and leaching behavior of heavy metals in MSW incineration fly ash in a DC arc plasma furnace".FUEL 210(2017):145-153.
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