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Residues from incineration of waste vary considerably in quality not only depending on the composition of the waste and the incineration system, but also on the extent and duration of contact with moisture and carbon dioxide in the atmosphere. Lead has a rather varying abundance and an even more varying availability in ash as determined by leach tests. Fresh fly ash from Jönköping Energi AB has a relatively low content of lead in comparison with other similar ashes but a somewhat high leach rate in relation to the total amount. Thus, in determining the pertinent destinations for this ash, it is appropriate to assess the availability after prolonged contact with moisture and air. It was found that the leaching decreased by up to around three orders of magnitude after such conditioning, which will what take place in a landfill over time. The effect was confirmed by pilot tests. The paper also describes the ash chemistry and possible mechanisms for the stabilization. It is concluded that the stabilization can facilitate landfilling.
acceptance criteria, ageing, aragonite, ash, calcium carbonate, carbonatation, hazardous waste, incineration, landfilling, leaching, lead
[1] Ordinance of waste (in Swedish: Avfallsförordningen). SFS 2011:927.
[2] Directive 2008/98/EC of the European Parliament and of the Council of 19 November2008 on waste and repealing certain Directives.
[3] Commission regulation (EU) No 1357/2014 of 18 December 2014 replacing Annex III to Directive 2008/98/EC.
[4] Sjöblom, R., Classification of waste as hazardous or non-hazardous - the cases of ash and ag. WIT Transactions on Ecology and the Environment, 163, pp. 285–296, 2012.
[5] Sjöblom, R., Classification of ash as hazardous or non-hazardous waste. Crete 4th International Conference, Industrial and Hazardous Waste Management, 2014.
[6] Regulation issued by the Swedish Environmental Protection Agency on landfilling, criteria and proceduress for for receiving waste at facilities for landfilling of waste (in Swedish: Naturvårdsverkets föreskrifter om deponering, kriterier och förfaranden för mottagning av avfall vid anläggningar för deponering av avfall). NFS 2004:10.
[7] Council Directive 1999/31/EC of 26 April 1999 on the landfill of waste.
[8] Sjöblom, R. & Kumpiene, J., Energy generation by waste incineration: the management of impregnated wood. WIT Transactions on Ecology and the Environment, 195, pp. 89–100, 2015. http://dx.doi.org/10.2495/ESUS150081
[9] Christensen, T.H., Solid Waste Technology & Management, John Wiley and Sons, 1, 2011.
[10] Faure, G., Principles and Applications of Geochemistry, 2nd edn, Section 8.1. PrenticeHall International, 1988.
[11] Bodek, I., Lyman, W.J. & Reehl, W.F., Environmental Inorganic Chemistry, Properties, Processes and Estimation Methods, Pergamon press, 1988.
[12] Callender, E., Heavy metals in the environment – historical trends. In Environmental Geochemistry, ed. B.S. Lollar, Elsevier, 2005.
[13] Wang, L., Chen, Q., Jamro, I.A., Li, R.D. & Baloch, H.A., Accelerated co-precipitation of lead, zinc and copper by carbon dioxide bubbling in alkaline municipal solid waste incinerator (MSWI) fly ash wash water. RSC Advances, 6, pp. 20173–20186, 2016. http://dx.doi.org/10.1039/C5RA23889G
[14] Bogush, A., Stegemann, J.A., Wood, I. & Roy, A., Element composition and mineralogical characterisation of air pollution control residue from UK energy-from-waste facilities. Waste Management, 36, pp. 119–129, 2015. http://dx.doi.org/10.1016/j.wasman.2014.11.017
[15] Dabo, D., Raimbault, L., Badreddine, R., Chaurand, P., Rose, J. & De Windt, L., Characterisation of glassy and heterogeneous cementing phases of municipal solid waste of incineration (MSWI) bottom ash. Australasian Institute of Mining and Metallurgy Publication Series, pp. 95–99, 2008.
[16] 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, 21, pp. 335–351, 2006. http://dx.doi.org/10.1016/j.apgeochem.2005.11.003
[17] Piantonea, P., Bodenan, F. & Chatelet-Snidaro, L., Mineralogical study of secondary mineral phases from weathered MSWI bottom ash: implications for the modelling and trapping of heavy metals. Applied Geochemistry, 19, pp. 1891–1904, 2004. http://dx.doi.org/10.1016/j.apgeochem.2004.05.006
[18] Santos, R.M., Mertens, G., Salman, M., Cizer, Ö. & Van Gerven, T., Comparative study of ageing, heat treatment and accelerated carbonation for stabilization of municipal solid waste incineration bottom ash in view of reducing regulated heavy metal/metalloid leaching. Journal of Environmental Management, 128, pp. 807–821, 2013. http://dx.doi.org/10.1016/j.jenvman.2013.06.033
[19] Jiang, J., Chen, M., Zhang, Y. & Xu, X., Pb stabilization in fresh fly ash from municipal solid waste incinerator using accelerated carbonation technology. Journal of Hazardous Materials, 161, pp. 1046–1051, 2009. http://dx.doi.org/10.1016/j.jhazmat.2008.04.051
[20] Yunmei, W., Takayuki, S., Amirhomayoun, S. & Fumitake, T., Mineralogical characterization of municipal solid waste incineration bottom ash with an emphasis on heavy metal-bearing phases. Journal of Hazardous Materials, 187, pp. 534–543, 2011. http://dx.doi.org/10.1016/j.jhazmat.2011.01.070
[21] Brännvall, E., Andreas, L., Sjöblom, R., Diener, S. & Lagerkvist, A., Factors influencing chemical and mineralogical changes in RDF Fly ashes during aging. Journal of Environmental Engineering, 140(3), 2014. http://dx.doi.org/10.1061/(ASCE)EE.1943-7870.0000802
[22] Shimaoka, T., Miyawaki, K., Soeda, M., Hanashima, M., Yoshida, T., Uchida, T., Gardner, K.H. & Eighmy, T.T., Mechanisms for the aging-induced reduction of lead solubility in scrubber residues from municipal solid waste combustion. Waste Management & Research, 20, pp. 90–98, 2002. http://dx.doi.org/10.1177/0734242X0202000110
[23] Ecke, H., Menad, N. & Lagerkvist, A., Carbonation of municipal solid waste incineration fly ash and the impact on metal mobility. Journal of Environmental Engineering, 129, pp. 435–440, 2003. http://dx.doi.org/10.1061/(ASCE)0733-9372(2003)129:5(435)
[24] Funatsuki, A., Takaoka, M., Oshita, K. & Takeda, N., Methods of determining lead speciation in fly ash by X-ray absorption fine-structure spectroscopy and a sequential extraction procedure. Analytical Sciences, 28(5), pp. 481–490, 2012. http://dx.doi.org/10.2116/analsci.28.481
[25] Sjöblom, R., Mechanisms for scale containing zinc and lead on tubes in conjunction with incineration of recycled wood fuels (in Swedish: Hypoteser och mekanismer för bildning av beläggningar innehållande zink och bly i samband med förbränning av returträflis). Värmeforsk (now Energiforsk), Miljö- och förbränningsteknik, 734, 2001.
[26] Mihee, L., Gi-Chun, H., Ji-Whan, A. & Kwang-Suk, Y., Environmental remediation and conversion of carbon dioxide (CO2) into useful green products by accelerated carbonation technology. International Journal of Environmental Research and Public Health, 7, pp. 203–228, 2010. http://dx.doi.org/10.3390/ijerph7010203