Screening of heavy metal containing waste types for use as raw material in Arctic clay-based bricks

Louise Josefine Belmonte, Lisbeth M. Ottosen, Gunvor Marie Kirkelund, Pernille Erland Jensen, Andreas Peter Vestbø

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

In the vulnerable Arctic environment, the impact of especially hazardous wastes can have severe consequences and the reduction and safe handling of these waste types are therefore an important issue. In this study, two groups of heavy metal containing particulate waste materials, municipal solid waste incineration (MSWI) fly and bottom ashes and mine tailings (i.e., residues from the mineral resource industry) from Greenland were screened in order to determine their suitability as secondary resources in clay-based brick production. Small clay discs, containing 20 or 40% of the different particulate waste materials, were fired and material properties and heavy metal leaching tests were conducted before and after firing. Remediation techniques (washing in distilled water and electrodialytical treatment) applied to the fly ash reduced leaching before firing. The mine tailings and bottom ash brick discs obtained satisfactory densities (1669-2007 kg/m3) and open porosities (27.9-39.9%). In contrast, the fly ash brick discs had low densities (1313-1578 kg/m3) and high open porosities (42.1-51. %). However, leaching tests on crushed brick discs revealed that heavy metals generally became more available after firing for all the investigated materials and that further optimisation is therefore necessary prior to incorporation in bricks.
Original languageEnglish
JournalEnvironmental Science and Pollution Research
Volume25
Pages (from-to)32831–32843
ISSN0944-1344
DOIs
Publication statusPublished - 2018

Keywords

  • Arctic
  • Clay-based ceramics
  • Greenland
  • Heavy metals
  • MSWI bottom ash
  • MSWI fly ash
  • Mine tailings

Cite this

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title = "Screening of heavy metal containing waste types for use as raw material in Arctic clay-based bricks",
abstract = "In the vulnerable Arctic environment, the impact of especially hazardous wastes can have severe consequences and the reduction and safe handling of these waste types are therefore an important issue. In this study, two groups of heavy metal containing particulate waste materials, municipal solid waste incineration (MSWI) fly and bottom ashes and mine tailings (i.e., residues from the mineral resource industry) from Greenland were screened in order to determine their suitability as secondary resources in clay-based brick production. Small clay discs, containing 20 or 40{\%} of the different particulate waste materials, were fired and material properties and heavy metal leaching tests were conducted before and after firing. Remediation techniques (washing in distilled water and electrodialytical treatment) applied to the fly ash reduced leaching before firing. The mine tailings and bottom ash brick discs obtained satisfactory densities (1669-2007 kg/m3) and open porosities (27.9-39.9{\%}). In contrast, the fly ash brick discs had low densities (1313-1578 kg/m3) and high open porosities (42.1-51. {\%}). However, leaching tests on crushed brick discs revealed that heavy metals generally became more available after firing for all the investigated materials and that further optimisation is therefore necessary prior to incorporation in bricks.",
keywords = "Arctic, Clay-based ceramics, Greenland, Heavy metals, MSWI bottom ash, MSWI fly ash, Mine tailings",
author = "Belmonte, {Louise Josefine} and Ottosen, {Lisbeth M.} and Kirkelund, {Gunvor Marie} and Jensen, {Pernille Erland} and Vestb{\o}, {Andreas Peter}",
year = "2018",
doi = "10.1007/s11356-016-8040-z",
language = "English",
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journal = "Environmental Science and Pollution Research",
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Screening of heavy metal containing waste types for use as raw material in Arctic clay-based bricks. / Belmonte, Louise Josefine; Ottosen, Lisbeth M.; Kirkelund, Gunvor Marie; Jensen, Pernille Erland; Vestbø, Andreas Peter.

In: Environmental Science and Pollution Research, Vol. 25, 2018, p. 32831–32843.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Screening of heavy metal containing waste types for use as raw material in Arctic clay-based bricks

AU - Belmonte, Louise Josefine

AU - Ottosen, Lisbeth M.

AU - Kirkelund, Gunvor Marie

AU - Jensen, Pernille Erland

AU - Vestbø, Andreas Peter

PY - 2018

Y1 - 2018

N2 - In the vulnerable Arctic environment, the impact of especially hazardous wastes can have severe consequences and the reduction and safe handling of these waste types are therefore an important issue. In this study, two groups of heavy metal containing particulate waste materials, municipal solid waste incineration (MSWI) fly and bottom ashes and mine tailings (i.e., residues from the mineral resource industry) from Greenland were screened in order to determine their suitability as secondary resources in clay-based brick production. Small clay discs, containing 20 or 40% of the different particulate waste materials, were fired and material properties and heavy metal leaching tests were conducted before and after firing. Remediation techniques (washing in distilled water and electrodialytical treatment) applied to the fly ash reduced leaching before firing. The mine tailings and bottom ash brick discs obtained satisfactory densities (1669-2007 kg/m3) and open porosities (27.9-39.9%). In contrast, the fly ash brick discs had low densities (1313-1578 kg/m3) and high open porosities (42.1-51. %). However, leaching tests on crushed brick discs revealed that heavy metals generally became more available after firing for all the investigated materials and that further optimisation is therefore necessary prior to incorporation in bricks.

AB - In the vulnerable Arctic environment, the impact of especially hazardous wastes can have severe consequences and the reduction and safe handling of these waste types are therefore an important issue. In this study, two groups of heavy metal containing particulate waste materials, municipal solid waste incineration (MSWI) fly and bottom ashes and mine tailings (i.e., residues from the mineral resource industry) from Greenland were screened in order to determine their suitability as secondary resources in clay-based brick production. Small clay discs, containing 20 or 40% of the different particulate waste materials, were fired and material properties and heavy metal leaching tests were conducted before and after firing. Remediation techniques (washing in distilled water and electrodialytical treatment) applied to the fly ash reduced leaching before firing. The mine tailings and bottom ash brick discs obtained satisfactory densities (1669-2007 kg/m3) and open porosities (27.9-39.9%). In contrast, the fly ash brick discs had low densities (1313-1578 kg/m3) and high open porosities (42.1-51. %). However, leaching tests on crushed brick discs revealed that heavy metals generally became more available after firing for all the investigated materials and that further optimisation is therefore necessary prior to incorporation in bricks.

KW - Arctic

KW - Clay-based ceramics

KW - Greenland

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