Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid waste incinerators

LIANG Shunwen1, JIANG Jianguo2, ZHANG Yan2, XU Xin2

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Front. Environ. Sci. Eng. ›› 2008, Vol. 2 ›› Issue (3) : 358-363. DOI: 10.1007/s11783-008-0060-6

Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid waste incinerators

  • LIANG Shunwen1, JIANG Jianguo2, ZHANG Yan2, XU Xin2
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Abstract

The leaching characteristics of heavy metals in products of cement stabilization of fly ash from a municipal solid waste incinerator were investigated in this paper. The stabilization of heavy metals such as Cd, Pb, Cu, and Zn in fly ash from such incinerators was examined through the national standard method in China based on the following factors: additive quantity of cement and Na2S, curing time, and pH of leaching liquor. The results showed that as more additives were used, less heavy metals were leached except for Pb, which is sensitive to pH of the leachate, and the worse effect was observed for Cd. The mass ratio of cement to fly ash = 10% is the most appropriate parameter according to the national standard method. When the hydration of cement was basically finished, stabilization of heavy metals did not vary after curing for 1 d. The mixtures of cement and fly ash had excellent adaptability to environmental pH. The pH of leachate was maintained at 7 when pH of leaching liquor varied from 3 to 11.

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LIANG Shunwen, JIANG Jianguo, ZHANG Yan, XU Xin. Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid waste incinerators. Front.Environ.Sci.Eng., 2008, 2(3): 358‒363 https://doi.org/10.1007/s11783-008-0060-6

References

1. Wan X, Wang W, Ye T, Guo Y, Gao X . A study on the chemical and mineralogical characterizationof MSWI fly ash using a sequential extraction procedure. Journal of Hazardous Materials, 2006, B134: 197–201. doi:10.1016/j.jhazmat.2005.10.048
2. Jiang J G, Wang W, Li G O, Na C Z, Zhen X L, Zhao X L . The status and development of stabilization technology in treatingwith heavy metal hazardous waste. EnvironmentProtection of Xinjiang, 2000, 22(1): 006–010 (in Chinese)
3. Holger E, Nourreddine M, Anders L . Carbonation of municipal solid waste incineration flyash and the impact on metal mobility. EnvironmentEngineering, 2003, 129(5): 435–440. doi:10.1061/(ASCE)0733‐9372(2003)129:5(435)
4. Jiang J G, Wang W, Li G D . Experimental study on the chemical stabilization technologyin treating with fly ash using heavy metal chelating agent. Chinese Journal of Environment Science, 1999, 20(3): 14–18 (in Chinese)
5. Silveira B I, Dantas A E M, Blasques J E M, Santos R K P . Effectivenessof cement-based systems for stabilization and solidification of spentpotliner inorganic fraction. Journal ofHazardous Materials, 2003, B98: 183–190. doi:10.1016/S0304‐3894(02)00317‐5
6. Jiang J G, Wang J, Xu X, Wang W, Deng Z, Zhang Y . Heavymetal stabilization in municipal solid waste incineration flyash usingheavy metal chelating agents. Journal ofHazardous Materials, 2004, 113: 141–146. doi:10.1016/j.jhazmat.2004.05.030
7. Taylor E, Bradley S C, Leslie G, Frank K C, Earl F E, Daniel O, James E K, Dykstra E J, Elizabeth L S, Carl A F . Heavy metal stabilizationin municipal solid waste combustion dry scrubber residue using solublephosphate. Environmental Science and Technology, 1997, 31: 3330–3338. doi:10.1021/es970407c
8. Jiang J G, Zhang Y, Xu X, Wang J, Deng Z, Zhao Z Z . Heavy metal stabilization in municipal solid waste incineration flyash using soluble phosphate. Chinese Journalof Environment Science, 2005, 26(4): 191–194 (in Chinese)
9. GB 5086. 1-1997. . MethodStandard for Leaching Toxicity of Solid Wastes–Roll over LeachingProcedure.Beijing: State Environmental ProtectionAdministration of China, 1997 (in Chinese)
10. GB 18598-2001. . HazardousWaste Landfill Admission Control Standards. Beijing: State Environmental ProtectionAdministration of China, 2001 (in Chinese)
11. Sabbas T . Managementof municipal solid waste incineration residues. Waste Management, 2003, 23: 61–88. doi:10.1016/S0956‐053X(02)00161‐7
12. GB 5085.3-1996. . IdentificationStandard for Hazardous Wastes–Identification for ExtractionProcedure Toxicity.Beijing: State Environmental ProtectionAdministration of China, 1996 (in Chinese)
13. Constantino F P . Solidification/stabilization of electric arc furnace dust using coalfly ash analysis of the stabilization process. Journal of Hazardous Materials, 2001, B82: 183–195
14. Huang W J . A study on the cement-like properties of municipal waste incinerationashes. Cement and Concrete Research, 2003, 33: 1795–1799. doi:10.1016/S0008‐8846(03)00203‐5
15. Li X D . Heavy metal speciation and leaching behaviors in cement based solidified/stabilizedwaste materials. Journal of Hazardous Materials, 2001, A82: 215–230. doi:10.1016/S0304‐3894(00)00360‐5
16. Conner J R . Chemical Fixation and Solidification of Hazardous Wastes. New York: Van Nostrand Reinhold, 1990
17. Michael A, Janusa M A . Solidification/stabilizationof lead with the aid of bagasse as an additive to Portland cement. Microchemistry, 1998, 65: 255–259
18. Minocha A K . Effect of inorganic materials on the solidification of heavy metalsludge. Cement and Concrete Research, 2003, 33: 1695–1701. doi:10.1016/S0008‐8846(03)00146‐7
19. Grutzeck M W, Michael W, Wei F, Roy D M . Retardationeffects in the hydration of cement-fly ash pastes. Material Research Society Symposia Proceedings, 1985, 43: 65–72
20. Polettini A, Pomi A, Sirini R . Fractional factorial design to investigate the influenceof heavy metals and anions on acid neutralization behavior of cement-basedproducts. Environmental Science and Technology, 2002, 36: 1584–1591. doi:10.1021/es010002z
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