Release of elements from municipal solid waste incineration fly ash

Wei WANG, Lei ZHENG, Feng WANG, Xiao WAN, Keqing YIN, Xingbao GAO

PDF(396 KB)
PDF(396 KB)
Front. Environ. Sci. Eng. ›› 2010, Vol. 4 ›› Issue (4) : 482-489. DOI: 10.1007/s11783-010-0245-7
RESEARCH ARTICLE
RESEARCH ARTICLE

Release of elements from municipal solid waste incineration fly ash

Author information +
History +

Abstract

The element-release behavior of municipal solid waste incineration fly ash was explored through leaching test with continuous set-point pH (pHstat test) and serial single reaction cell (SSRC) tests. First, the relationship between element release and acid neutralizing capacity (ANC) consumption was examined with a pHstat test. Four types of release behaviors were identified which are characteristic for different elements: (1) release curves that were almost linear with ANC consumption (Ca, Zn, and Cd); (2) release that was significantly faster than ANC (Na, K, and Cl); (3) curves that featured a strong increase with ANC consumption, after a transient release, followed by an almost equal decrease (Si and S); and (4) release that is strongly retarded compared with ANC consumption (Cr, Cu, and Pb). In the SSRC system, it the existence of a pH front and a wash-out phenomenon is demonstrated. Combining the results from the SSRC test with the kinetic analysis of the ANC system in the pHstat test, it was inferred that less than one-third of the ANC measured from a batch pH titration plays a neutralization role in a field situation. The methodologies described may provide a powerful set of tools for systematic evaluation of element release from solid wastes.

Keywords

pHstat test / Serial single reaction cell test (SSRC) / leaching / heavy metal

Cite this article

Download citation ▾
Wei WANG, Lei ZHENG, Feng WANG, Xiao WAN, Keqing YIN, Xingbao GAO. Release of elements from municipal solid waste incineration fly ash. Front Envir Sci Eng Chin, 2010, 4(4): 482‒489 https://doi.org/10.1007/s11783-010-0245-7

References

[1]
Wan X, Wang W, Ye T M, Guo Y W, Gao X B. A study on the chemical and mineralogical characterization of MSWI fly ash using a sequential extraction procedure. Journal of Hazardous Materials, 2006, 134(1-3): 197–201
[2]
Yan J Y, Moreno L, Neretnieks I. The long-term acid neutralizing capacity of steel slag. Waste Management (New York, N.Y.), 2000, 20(2-3): 217–223
[3]
Lo H M, Liao Y L. The metal-leaching and acid-neutralizing capacity of MSW incinerator ash co-disposed with MSW in landfill sites. Journal of Hazardous Materials, 2007, 142(1-2): 512–519
[4]
Dijkstra J J, Meeussen J C L, Comans R N J. Leaching of heavy metals from contaminated soils: an experimental and modeling study. Environmental Science & Technology, 2004, 38(16): 4390–4395
CrossRef Google scholar
[5]
Dijkstra J J, van der Sloot H A, Comans R N J. The leaching of major and trace elements from MSWI bottom ash as a function of pH and time. Applied Geochemistry, 2006, 21(2): 335–351
CrossRef Google scholar
[6]
Cappuyns V, Swennen R, Verhulst J. Assessment of acid neutralizing capacity and potential mobilisation of trace metals from land-disposed dredged sediments. Science of the Total Environment, 2004, 333(1-3): 233–247
[7]
Li Y D, Richardson J B, Mark Bricka R, Niu X J, Yang H B, Li L, Jimenez A. Leaching of heavy metals from E-waste in simulated landfill columns. Waste Management (New York, N.Y.), 2009, 29(7): 2147–2150
CrossRef Google scholar
[8]
Bednar A J, Boyd R E, Jones W T, McGrath C J, Johnson D R, Chappell M A, Ringelberg D B. Investigations of tungsten mobility in soil using column tests. Chemosphere, 752009, 75: 1049–1056
[9]
Mester Z, Angelone M, Brunori C, Cremisini C, Muntau H, Morabito R. Digestion methods for analysis of fly ash samples by atomic absorption spectrometry. Analytical Chemical Acta, 1999, 395(1-2): 157–163
[10]
Schwarz A, Wilcke W, Stýk J, Zech W. Heavy metal release from soils in batch pHstat experiments. Soil Science Society of America Journal, 1999, 63: 290 - 296
CrossRef Google scholar
[11]
Harris W R, Silberman D. Time-dependent leaching of coal fly ash by chelating agents. Environmental Science & Technology, 1983, 17(3): 139–145
CrossRef Google scholar
[12]
Fruchter J S, Ral D, Zachara J M. Identification of solubility-controlling solid phases in a large fly ash field lysimeter. Environmental Science & Technology, 1990, 24(8): 1173–1179
CrossRef Google scholar
[13]
Zhang F S, Itoh H. Extraction of metals from municipal solid waste incinerator fly ash by hydrothermal process. Journal of Hazardous Materials, 2006, 136(3): 663–670
CrossRef Google scholar
[14]
Eighmy T T, Eusden J D Jr, Krzanowski J E, Domingo D S, Stämpfli D, Martin J R, Erickson P M. Comprehensive approach toward understanding element speciation and leaching behavior in municipal solid waste incineration electrostatic precipitator ash. Environmental Science & Technology, 1995, 29(3): 629–646
CrossRef Google scholar
[15]
Gilardoni S, Fermo P, Cariati F, Gianelle V, Pitea D, Collina E, Lasagni M. MSWI fly ash particle analysis by scanning electron microscopy-energy dispersive X-ray spectroscopy. Environmental Science & Technology, 2004, 38(24): 6669–6675
CrossRef Google scholar
[16]
Karlfeldt K, Steenari B M. Assessment of metal mobility in MSW incineration ashes using water as the reagent. Fuel, 2007, 86(12-13): 1983–1993
[17]
Piantone P, Bodénan F, Chatelet-Snidaro L. Mineralogical study of secondary mineral phases from weathered MSWI bottom ash: Implications for the modeling and trapping of heavy metals. Applied Geochemistry, 2004, 19(12): 1891–1904
[18]
Van der Bruggen B, Vogels G, Van Herck P, Vandecasteele C. Simulation of acid washing of municipal solid waste incineration fly ashes in order to remove heavy metals. Journal of Hazardous Materials, 1998, 57(1-3): 127–144
[19]
Halim C E, Short S A, Scott J A, Amal R, Low G. Modelling the leaching of Pb, Cd, As, and Cr from cementitious waste using PHREEQC. Journal of Hazardous Materials, 2005, 125(1-3): 45–61
[20]
Ugurlu A. Leaching characteristics of fly ash. Envirnmental Geology, 2004, 46: 890–895
CrossRef Google scholar
[21]
Yan J Y, Moreno L, Neretnieks I. The neutralization behavior of MSWI bottom ash on different time scales and in different reaction systems. Waste Management (New York), 1999, 19(5): 339–347
[22]
Halim C E, Scott J A, Natawardaya H, Amal R, Beydoun D, Low G. Comparison between acetic acid and landfill leachates for the leaching of Pb(II), Cd(II), As(V), and Cr(VI) from cementitious wastes. Environmental Science & Technology, 2004, 38(14): 3977–3983
CrossRef Google scholar
[23]
Zhang F S, Itoh H. Iron oxide-loaded slag for arsenic removal from aqueous system. Chemosphere, 2005, 60(3): 319–325
CrossRef Google scholar
[24]
Humez N, Humez A L, Juste C, Prost R. A new assessment of mobility of elements in sediments and wastes. Chemical Speciation and Bioavailability, 1997, 9: 57–65

Acknowledgements

This research was partially funded by the National Natural Science Foundation of China (Grant No. 20777044).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
AI Summary AI Mindmap
PDF(396 KB)

Accesses

Citations

Detail

Sections
Recommended

/