Weathering of MSWI bottom ash with emphasis on the glassy constituents

Autor:	Chris Zevenbergen, R.D. Schuiling, Rob N.J. Comans, John P. Bradley, L. P. van Reeuwijk
Rok vydání:	1998
Předmět:	geography geography.geographical_feature_category Incinerator bottom ash Weathering Heavy metals Contamination Volcano Mining engineering Geochemistry and Petrology Fly ash Bottom ash Environmental chemistry Environmental science Economic Geology Leaching (metallurgy)
Zdroj:	Journal of Geochemical Exploration. 62:293-298
ISSN:	0375-6742
DOI:	10.1016/s0375-6742(97)00033-2
Popis:	Municipal solid waste incinerator (MSWI) bottom ash is predominantly composed of high temperature solids. In a natural atmospheric environment many of these solids are metastable and will alter to form thermodynamically stable assemblages of minerals. Results of our research have revealed that the weathering products of MSWI bottom ash, which has been disposed of in the open, are similar to those found in weathered volcanic ashes and scoriae. The most obvious change is the transformation of glassy constituents into clay-like materials. These secondary products may have a significant influence on the leaching characteristics of contaminants such as heavy metals. Although the influence of this alteration process on total leaching is yet to be determined, our results suggest new topics of future research on geochemical engineering concepts, where natural weathering processes are exploited to minimize deleterious effects of ash disposal and utilization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f1463b2903ac37b6e5d766c9b50f1609 https://doi.org/10.1016/s0375-6742(97)00033-2 Zobrazit plný text záznamu Full Text from ScienceDirect