Sintering characteristics of CaO-rich municipal solid waste incineration fly ash through the addition of Si/Al-rich ash residues

  • Hong-Yun Hu
  • Huan Liu
  • Qiang Zhang
  • Ping-An Zhang
  • Ai-Jun Li
  • Hong Yao
  • Ichiro Naruse


Thermal treatment is a promising technology for the fast disposal of hazardous municipal solid waste incineration (MSWI) fly ash in China. However, fly ash produced in grate incinerator (GFA) is rich in CaO and chlorides, which promote the formation of toxic hexavalent chromium [Cr(VI)] and ash agglomeration during the thermal process, inhibiting the thermal disposal of GFA. In this study, sintering characteristics of CaO-rich GFA were improved by adding Si/Al-rich MSWI ash residues. According to the results, ash agglomeration was well suppressed during thermal treatment of the mixed ash. Si/Al/Fe-compounds competed with un-oxidized Cr-compounds to react with CaO and suppressed Cr(VI) formation. Meanwhile, chlorides in GFA facilitated heavy metal volatilization from added ashes to the secondary fly ash, favoring the recovery of these metals. Ca-aluminosilicates was found as the main mineral phase in the thermally treated mixed ash, which has attractive potential for applications. The formation of the aluminosilicates made the heavy metals that remained in the treated mixed ash more stable than the thermally treated single ash.


MSWI fly ash Sintering characteristics Ash mixing Heavy metals Agglomeration 



This work was carried out by financial support of Key Project of Chinese National Programs for Fundamental Research and Development (973 program, 2011CB201505) and National Natural Science Foundation of China (Grants,51161140330, 51076053). The Analytical and Testing Center of Huazhong University of Science and Technology is acknowledged for the experimental measurements.

Supplementary material

10163_2014_341_MOESM1_ESM.doc (3 mb)
Supplementary material 1 (DOC 3049 kb)


  1. 1.
    Chen T, Yan JH, Lu SY, Li XD, Gu YL, Dai HF, Ni MJ, Cen KF (2008) Characteristic of poly-chlorinated dibenzo-p-dioxins and dibenzofurans in fly ash from incinerators in China. J Hazard Mater 150:510–514CrossRefGoogle Scholar
  2. 2.
    Zhang H, He PJ, Shao L (2008) Implication of heavy metals distribution for a municipal solid waste management system—a case study in Shanghai. Sci Total Environ 402:257–267CrossRefGoogle Scholar
  3. 3.
    Cheng HF, Hu YN (2010) Municipal solid waste (MSW) as a renewable source of energy: current and future practices in China. Bioresour Technol 101:3816–3824CrossRefGoogle Scholar
  4. 4.
    Lundin L, Marklund S (2007) Thermal degradation of PCDD/F, PCB and HCB in municipal solid waste ash. Chemosphere 67:474–481CrossRefGoogle Scholar
  5. 5.
    Song GJ, Kim SH, Seo YC, Kim SC (2008) Dechlorination and destruction of PCDDs/PCDFs in fly ashes from municipal solid waste incinerators by low temperature thermal treatment. Chemosphere 71:248–257CrossRefGoogle Scholar
  6. 6.
    Nowak B, Pessl A, Aschenbrenner P, Szentannai P, Mattenberger H, Rechberger H, Hermann L, Winter F (2010) Heavy metal removal from municipal solid waste fly ash by chlorination and thermal treatment. J Hazard Mater 179:323–331CrossRefGoogle Scholar
  7. 7.
    Kuboňová L, Langová Š, Nowak B, Winter F (2013) Thermal and hydrometallurgical recovery methods of heavy metals from municipal solid waste fly ash. Waste Manage 33:2322–2327CrossRefGoogle Scholar
  8. 8.
    Polettini A, Pomi R, Trinci L, Muntoni A, Mastro SL (2004) Engineering and environmental properties of thermally treated mixtures containing MSWI fly ash and low-cost additives. Chemosphere 56:901–910CrossRefGoogle Scholar
  9. 9.
    Yang Y, Xiao Y, Wilson N, Voncken JHL (2009) Thermal behaviour of ESP ash from municipal solid waste incinerators. J Hazard Mater 166:567–575CrossRefGoogle Scholar
  10. 10.
    Shi HS, Deng K, Yuan F, Wu K (2009) Preparation of the saving-energy sulphoaluminate cement using MSWI fly ash. J Hazard Mater 169:551–555CrossRefGoogle Scholar
  11. 11.
    Zhang HY, Zhao YC, Qi JY (2011) Utilization of municipal solid waste incineration (MSWI) fly ash in ceramic brick: product characterization and environmental toxicity. Waste Manage 31:331–341CrossRefGoogle Scholar
  12. 12.
    Hu HY, Luo GQ, Liu H, Qiao Y, Xu MH, Yao H (2013) Fate of chromium during thermal treatment of municipal incineration fly ash (MSWI). P Combust Inst 34:2795–2801CrossRefGoogle Scholar
  13. 13.
    Kirk DW, Chan CCY, Marsh H (2002) Chromium behavior during thermal treatment of MSW fly ash. J Hazard Mater B90:39–49CrossRefGoogle Scholar
  14. 14.
    Liu YS, Zheng LT, Li XD, Xie SD (2009) SEM/EDS and XRD characterization of raw and washed MSWI fly ash sintered at different temperatures. J Hazard Mater 162:161–173CrossRefGoogle Scholar
  15. 15.
    Hu HY, Liu H, Shen WQ, Luo GQ, Li AJ, Lu ZL, Yao H (2013) Comparison of CaO’s effect on the fate of heavy metals during thermal treatment of two typical types of MSWI fly ashes in China. Chemosphere 93:590–596CrossRefGoogle Scholar
  16. 16.
    Nowak B, Rocha SF, Aschenbrenner P, Rechberger H, Winter F (2012) Heavy metal removal from MSW fly ash by means of chlorination and thermal treatment: influence of the chloride type. Chem Eng J 179:178–185CrossRefGoogle Scholar
  17. 17.
    Chou JD, Wey MY, Chang SH (2009) Evaluation of the distribution patterns of Pb, Cu and Cd from MSWI fly ash during thermal treatment by sequential extraction procedure. J Hazard Mater 162:1000–1006CrossRefGoogle Scholar
  18. 18.
    Mostafa NY, Shaltout AA, Abdel-Aal MS, El-maghraby A (2010) Sintering mechanism of blast furnace slag-kaolin ceramics. Mater Des 31:3677–3682CrossRefGoogle Scholar
  19. 19.
    Liu WQ, Feng B, Wu YQ, Wang GX, Barry J, Costa JC (2010) Synthesis of sintering-resistant sorbents for CO2 capture. Environ Sci Technol 44:3093–3097CrossRefGoogle Scholar
  20. 20.
    Kuo JH, Lin CL, Wey MY (2011) Effect of particle agglomeration on heavy metals adsorption by Al- and Ca-based sorbents during fluidized bed incineration. Fuel Process Technol 92:2089–2098CrossRefGoogle Scholar
  21. 21.
    Chou JD, Wey MY, Liang HH, Chang SH (2009) Biotoxicity evaluation of fly ash and bottom ash from different municipal solid waste incinerators. J Hazard Mater 168:197–202CrossRefGoogle Scholar
  22. 22.
    Zhang H, He PJ, Shao LM, Li XJ (2008) Leaching behavior of heavy metals from municipal solid waste incineration bottom ash and its geochemical modeling. J Mater Cycles Waste Manag 10:7–13CrossRefGoogle Scholar
  23. 23.
    Yao J, Li WB, Kong QN, Wu YY, He R, Shen DS (2010) Content, mobility and transfer behavior of heavy metals in MSWI bottom ash in Zhejiang province, China. Fuel 89:616–622CrossRefGoogle Scholar
  24. 24.
    Kuo NW, Ma HW, Yang YM, Hsiao TY, Huang CM (2007) An investigation on the potential of metal recovery from the municipal waste incinerator in Taiwan. Waste Manage 27:1673–1679CrossRefGoogle Scholar
  25. 25.
    Ministry of Environmental Protection, 2007. Solid waste-extraction procedure for leaching toxicity-acetic acid buffer solution method. BeijingGoogle Scholar
  26. 26.
    Ninomiya Y, Zhang LA, Sakano T, Kanaoka C, Masui M (2004) Transformation of mineral and emission of particulate matters during co-combustion of coal with sewage sludge. Fuel 83:751–764CrossRefGoogle Scholar
  27. 27.
    Bartels M, Lin W, Nijenhuis J, Kapteijn F, Ommen JR (2008) Agglomeration in fluidized beds at high temperatures: mechanisms, detection and prevention. Prog Energy Combust Sci 34:633–666CrossRefGoogle Scholar
  28. 28.
    Jakob A, Stucki S, Struis RPWJ (1996) Complete heavy metal removal from fly ash by heat treatment: influence of chlorides on evaporation rates. Environ Sci Technol 30:3275–3283CrossRefGoogle Scholar
  29. 29.
    Tian SL, Yu MJ, Wang W, Wang Q, Wu ZY (2009) Investigating the speciation of copper in secondary fly ash by X-ray absorption spectroscopy. Environ Sci Technol 43:9084–9088CrossRefGoogle Scholar
  30. 30.
    Yao H, Naruse I (2009) Behavior of lead compounds during municipal solid waste incineration. P Combust Inst 32:2685–2691CrossRefGoogle Scholar
  31. 31.
    Jakob A, Stucki S, Kuhn P (1995) Evaporation of heavy metals during the heat treatment of municipal solid waste incinerator fly ash. Environ Sci Technol 15:2429–2436CrossRefGoogle Scholar
  32. 32.
    Struis RPWJ, Udwig CL, Lutz H, Scheidegger RM (2004) Speciation of zinc in municipal solid waste incineration fly ash after heat treatment: an x-ray absorption spectroscopy study. Environ Sci Technol 38:3760–3767CrossRefGoogle Scholar
  33. 33.
    Astrup T, Dijkstra JJ, Comans RNJ, Sloot HA, Chritensen TH (2006) Geochemical modeling of leaching from MSWI air-pollution-control residues. Environ Sci Technol 40:3551–3557CrossRefGoogle Scholar
  34. 34.
    Quina MJ, Bordado JCM, Quinta-Ferreira RM (2009) The influence of pH on the leaching behaviour of inorganic components from municipal solid waste APC residues. Waste Manage 29:2483–2493CrossRefGoogle Scholar
  35. 35.
    Huang K, Inoue K, Harada H, Kawakita H, Ohto K (2001) Leaching of heavy metals by citric acid from fly ash generated in municipal waste incineration plants. J Mater Cycles Waste Manag 13:118–126CrossRefGoogle Scholar
  36. 36.
    Fedjea KK, Ekberg C, Skarnemark G, Steenari BM (2010) Removal of hazardous metals from MSW fly ash—an evaluation of ash leaching methods. J Hazard Mater 173:310–317CrossRefGoogle Scholar
  37. 37.
    Cheng TW, Chen YS (2003) On formation of CaO-Al2O3-SiO2 glass-ceramics by vitrification of incinerator fly ash. Chemosphere 51:817–824CrossRefGoogle Scholar

Copyright information

© Springer Japan 2014

Authors and Affiliations

  • Hong-Yun Hu
    • 1
  • Huan Liu
    • 1
  • Qiang Zhang
    • 1
  • Ping-An Zhang
    • 1
  • Ai-Jun Li
    • 1
  • Hong Yao
    • 1
  • Ichiro Naruse
    • 2
  1. 1.State Key Laboratory of Coal CombustionHuazhong University of Science and TechnologyWuhanChina
  2. 2.Department of Mechanical Science & EngineeringNagoya UniversityNagoyaJapan

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