The immobilization of potentially toxic elements due to incineration and weathering of bottom ash fines

Qadeer Alam (Corresponding author), Katrin Schollbach, Marco Rijnders, Corrie van Hoek, Sieger van der Laan, H.J.H. Brouwers

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Uittreksel

Incineration bottom ash fines (≤ 125 μm) are known to contain potentially toxic elements (PTEs) and inorganic salts. The most abundant PTEs in the fines were Zn (0.5%), Cu (0.25%), Pb (0.12%), Mn (0.08%) and Cr (0.03%). The systematic quantification of the mineral phases and PTEs associated with them was performed with a multimethod approach using quantitative XRD, phase mapping with PhAse Recognition and Characterization (PARC) software and microprobe analysis. The mineral phases in the fines can be categorized as follows: 1) residual phases (e.g., quartz), 2) incineration phases (e.g., melilitic slag and iron oxides) and 3) quenching/weathering phases (e.g., calcite, ettringite, gypsum, hydrous Fe- and Al-oxides). Among the incineration phases, the melilitic slag was observed to contain Cr, Cu and Zn with 0.02%, 0.13% and 0.19%, respectively. In order of predominance, the weathering phases containing the most PTEs were: calcite < ettringite < hydrous Al-oxides < hydrous Fe-oxides. More than 70% of the phases in the BA fines were formed during incineration and weathering processes that explain the enrichment of PTEs in the smaller particles. During the one-batch leaching test, dissolution of weathering phases, especially ettringite, was observed (total mass loss: 7.2%).

TaalEngels
Artikelnummer120798
Aantal pagina's9
TijdschriftJournal of Hazardous Materials
Volume379
DOI's
StatusGepubliceerd - 5 nov 2019

Vingerafdruk

Ashes
Coal Ash
Incineration
bottom ash
Waste incineration
Poisons
Weathering
incineration
Immobilization
immobilization
weathering
Oxides
Calcite
oxide
slag
Slags
Calcium Carbonate
Minerals
calcite
inorganic salt

Trefwoorden

    Citeer dit

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    title = "The immobilization of potentially toxic elements due to incineration and weathering of bottom ash fines",
    abstract = "Incineration bottom ash fines (≤ 125 μm) are known to contain potentially toxic elements (PTEs) and inorganic salts. The most abundant PTEs in the fines were Zn (0.5{\%}), Cu (0.25{\%}), Pb (0.12{\%}), Mn (0.08{\%}) and Cr (0.03{\%}). The systematic quantification of the mineral phases and PTEs associated with them was performed with a multimethod approach using quantitative XRD, phase mapping with PhAse Recognition and Characterization (PARC) software and microprobe analysis. The mineral phases in the fines can be categorized as follows: 1) residual phases (e.g., quartz), 2) incineration phases (e.g., melilitic slag and iron oxides) and 3) quenching/weathering phases (e.g., calcite, ettringite, gypsum, hydrous Fe- and Al-oxides). Among the incineration phases, the melilitic slag was observed to contain Cr, Cu and Zn with 0.02{\%}, 0.13{\%} and 0.19{\%}, respectively. In order of predominance, the weathering phases containing the most PTEs were: calcite < ettringite < hydrous Al-oxides < hydrous Fe-oxides. More than 70{\%} of the phases in the BA fines were formed during incineration and weathering processes that explain the enrichment of PTEs in the smaller particles. During the one-batch leaching test, dissolution of weathering phases, especially ettringite, was observed (total mass loss: 7.2{\%}).",
    keywords = "Bottom ash, Leaching, MSWI, Potentially toxic elements, Weathering",
    author = "Qadeer Alam and Katrin Schollbach and Marco Rijnders and {van Hoek}, Corrie and {van der Laan}, Sieger and H.J.H. Brouwers",
    year = "2019",
    month = "11",
    day = "5",
    doi = "10.1016/j.jhazmat.2019.120798",
    language = "English",
    volume = "379",
    journal = "Journal of Hazardous Materials",
    issn = "0304-3894",
    publisher = "Elsevier",

    }

    The immobilization of potentially toxic elements due to incineration and weathering of bottom ash fines. / Alam, Qadeer (Corresponding author); Schollbach, Katrin; Rijnders, Marco; van Hoek, Corrie; van der Laan, Sieger; Brouwers, H.J.H.

    In: Journal of Hazardous Materials, Vol. 379, 120798, 05.11.2019.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

    TY - JOUR

    T1 - The immobilization of potentially toxic elements due to incineration and weathering of bottom ash fines

    AU - Alam,Qadeer

    AU - Schollbach,Katrin

    AU - Rijnders,Marco

    AU - van Hoek,Corrie

    AU - van der Laan,Sieger

    AU - Brouwers,H.J.H.

    PY - 2019/11/5

    Y1 - 2019/11/5

    N2 - Incineration bottom ash fines (≤ 125 μm) are known to contain potentially toxic elements (PTEs) and inorganic salts. The most abundant PTEs in the fines were Zn (0.5%), Cu (0.25%), Pb (0.12%), Mn (0.08%) and Cr (0.03%). The systematic quantification of the mineral phases and PTEs associated with them was performed with a multimethod approach using quantitative XRD, phase mapping with PhAse Recognition and Characterization (PARC) software and microprobe analysis. The mineral phases in the fines can be categorized as follows: 1) residual phases (e.g., quartz), 2) incineration phases (e.g., melilitic slag and iron oxides) and 3) quenching/weathering phases (e.g., calcite, ettringite, gypsum, hydrous Fe- and Al-oxides). Among the incineration phases, the melilitic slag was observed to contain Cr, Cu and Zn with 0.02%, 0.13% and 0.19%, respectively. In order of predominance, the weathering phases containing the most PTEs were: calcite < ettringite < hydrous Al-oxides < hydrous Fe-oxides. More than 70% of the phases in the BA fines were formed during incineration and weathering processes that explain the enrichment of PTEs in the smaller particles. During the one-batch leaching test, dissolution of weathering phases, especially ettringite, was observed (total mass loss: 7.2%).

    AB - Incineration bottom ash fines (≤ 125 μm) are known to contain potentially toxic elements (PTEs) and inorganic salts. The most abundant PTEs in the fines were Zn (0.5%), Cu (0.25%), Pb (0.12%), Mn (0.08%) and Cr (0.03%). The systematic quantification of the mineral phases and PTEs associated with them was performed with a multimethod approach using quantitative XRD, phase mapping with PhAse Recognition and Characterization (PARC) software and microprobe analysis. The mineral phases in the fines can be categorized as follows: 1) residual phases (e.g., quartz), 2) incineration phases (e.g., melilitic slag and iron oxides) and 3) quenching/weathering phases (e.g., calcite, ettringite, gypsum, hydrous Fe- and Al-oxides). Among the incineration phases, the melilitic slag was observed to contain Cr, Cu and Zn with 0.02%, 0.13% and 0.19%, respectively. In order of predominance, the weathering phases containing the most PTEs were: calcite < ettringite < hydrous Al-oxides < hydrous Fe-oxides. More than 70% of the phases in the BA fines were formed during incineration and weathering processes that explain the enrichment of PTEs in the smaller particles. During the one-batch leaching test, dissolution of weathering phases, especially ettringite, was observed (total mass loss: 7.2%).

    KW - Bottom ash

    KW - Leaching

    KW - MSWI

    KW - Potentially toxic elements

    KW - Weathering

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    U2 - 10.1016/j.jhazmat.2019.120798

    DO - 10.1016/j.jhazmat.2019.120798

    M3 - Article

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    JO - Journal of Hazardous Materials

    T2 - Journal of Hazardous Materials

    JF - Journal of Hazardous Materials

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    ER -