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Factors influencing chemical and mineralogical changes in RDF fly ashes during aging
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0002-8843-043X
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0002-9715-975X
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0003-2544-6087
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.
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2014 (engelsk)Inngår i: Journal of environmental engineering, ISSN 0733-9372, E-ISSN 1943-7870, Vol. 140, nr 3, artikkel-id 4013014Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The effects of aging should be considered for reliable long-term assessments of the environmental risks of the use of refuse-derived-fuel (RDF) fly ash as landfill top cover liner material. Mineral transformations that occur in RDF fly ash, and the effects of selected factors on these transformations, were studied on compacted fly ash specimens in an accelerated aging experiment using a reduced factorial design. Carbon dioxide concentration, temperature, relative air humidity, time, and the quality of added water were varied in six factor combinations. Acid neutralization capacity and leaching behavior were analyzed after four different periods of time. The results were evaluated with multivariate data analysis. A significant change in the acid neutralization capacity, a decrease in leaching of Ba, Ca, Cl − , Cr, Cu, Pb, K, and Na, and an increase in solubility of Mg, Si, Zn, and SO 2− 4 could be attributed to different aging conditions

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2014. Vol. 140, nr 3, artikkel-id 4013014
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URN: urn:nbn:se:ltu:diva-9814DOI: 10.1061/(ASCE)EE.1943-7870.0000802ISI: 000332659800009Scopus ID: 2-s2.0-84894352857Lokal ID: 87fa6fee-92b6-4121-bb20-1f4cc6fca0faOAI: oai:DiVA.org:ltu-9814DiVA, id: diva2:982752
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Validerad; 2014; 20130923 (evebra)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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Brännvall, EvelinaAndreas, LaleSjöblom, RolfDiener, SilviaLagerkvist, Anders

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