| Naslov: | Environmental impacts and immobilization mechanisms of cadmium, lead and zinc in geotechnical composites made from contaminated soil and paper-ash |
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| Avtorji: | ID Đurić, Marija (Avtor)
ID Oprčkal, Primož (Avtor)
ID Zalar Serjun, Vesna (Avtor)
ID Mauko Pranjić, Alenka (Avtor)
ID Ščančar, Janez (Avtor)
ID Milačič, Radmila (Avtor)
ID Mladenovič, Ana (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://www.mdpi.com/2076-3417/11/24/11822/htm
 PDF - Predstavitvena datoteka, prenos (2,95 MB)
MD5: 3A5EAC88D4EE0AFD417F3E390943BDCE
 ZIP - Priloga, prenos (1,70 MB)
MD5: F660708BBCF55A003B188F039D113190
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  ZAG - Zavod za gradbeništvo Slovenije
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| Povzetek: | Paper-ash is used for remediation of heavily contaminated soils with metals, but remediation efficiency after longer periods has not been reported. To gain insights into the mechanisms of immobilization of cadmium (Cd), lead (Pb), and znic (Zn), a study was performed in the laboratory experiment in uncontaminated, artificially contaminated, and remediated soils, and these soils treated with sulfate, to mimic conditions in contaminated soil from zinc smelter site. Remediation was performed by mixing contaminated soil with paper-ash to immobilize Cd, Pb, and Zn in the geotechnical composite. Partitioning of Cd, Pb, and Zn was studied over one year in seven-time intervals applying the sequential extraction procedure and complementary X-ray diffraction analyses. This methodological approach enabled us to follow the redistribution of Cd, Pb, and Zn over time, thus, to studying immobilization mechanisms and assessing the remediation efficiency and stability of newly formed mineral phases. Cd, Pb, and Zn were effectively immobilized by precipitation of insoluble hydroxides after the addition of paper-ash and by the carbonization process in insoluble carbonate minerals. After remediation, Cd, Pb, and Zn concentrations in the water-soluble fraction were well below the limiting values for inertness: Cd by 100 times, Pb by 125 times, and Zn by 10 times. Sulfate treatment did not influence the remediation efficiency. Experimental data confirmed the high remediation efficiency and stability of insoluble Cd, Pb, and Zn mineral phases in geotechnical composites. |
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| Ključne besede: | cadmium, lead, zinc, contaminated soil, paper ash, immobilization mechanisms |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 13.12.2021 |
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| Založnik: | MDPI |
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| Leto izida: | 2021 |
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| Št. strani: | str. 1-15 |
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| Številčenje: | Vol. 11, iss. 24 |
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| PID: | 20.500.12556/DiRROS-15868  |
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| UDK: | 620.1/.2 |
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| ISSN pri članku: | 2076-3417 |
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| DOI: | 10.3390/app112411822 |
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| COBISS.SI-ID: | 89409283 |
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| Avtorske pravice: | © 2021 by the authors. Licensee MDPI, Basel, Switzerland |
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| Opomba: | Nasl. z nasl. zaslona;
Opis vira z dne 14. 12. 2021;
Št. članka 11822;
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| Datum objave v DiRROS: | 04.07.2023 |
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| Število ogledov: | 838 |
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| Število prenosov: | 511 |
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| Metapodatki: |    |
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