Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments
Low temperatures and frequent soil freeze-thaw in polar environments present challenges for the immobilisation of metals. To address these challenges we investigated the chemical forms of Pb, Zn and Cu in an Antarctic landfill, examined in vitro reaction kinetics of these metals and orthophosphate a...
Published in: | Environmental Pollution |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2012
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Online Access: | https://researchers.mq.edu.au/en/publications/4532bd7d-3bd2-41b2-a19e-6285ab330072 https://doi.org/10.1016/j.envpol.2011.09.035 http://www.scopus.com/inward/record.url?scp=80155166455&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/4532bd7d-3bd2-41b2-a19e-6285ab330072 2024-05-19T07:30:18+00:00 Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments White, Duanne A. Hafsteinsdóttir, Erla G. Gore, Damian B. Thorogood, Gordon Stark, Scott C. 2012-02 https://researchers.mq.edu.au/en/publications/4532bd7d-3bd2-41b2-a19e-6285ab330072 https://doi.org/10.1016/j.envpol.2011.09.035 http://www.scopus.com/inward/record.url?scp=80155166455&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess White , D A , Hafsteinsdóttir , E G , Gore , D B , Thorogood , G & Stark , S C 2012 , ' Formation and stability of Pb-, Zn- & Cu-PO 4 phases at low temperatures : Implications for heavy metal fixation in polar environments ' , Environmental Pollution , vol. 161 , pp. 143-153 . https://doi.org/10.1016/j.envpol.2011.09.035 article 2012 ftmacquarieunicr https://doi.org/10.1016/j.envpol.2011.09.035 2024-04-23T02:49:45Z Low temperatures and frequent soil freeze-thaw in polar environments present challenges for the immobilisation of metals. To address these challenges we investigated the chemical forms of Pb, Zn and Cu in an Antarctic landfill, examined in vitro reaction kinetics of these metals and orthophosphate at 2 and 22 °C for up to 185 days, and subjected the products to freeze-thaw. Reaction products at both temperatures were similar, but the rate of production varied, with Cu-PO 4 phases forming faster, and the Zn- and Pb-PO 4 phases slower at 2 °C. All metal-orthophosphate phases produced were stable during a 2.5 h freeze-thaw cycle to -30 °C. Metal immobilisation using orthophosphate can be successful in polar regions, but treatments will need to consider differing mineral stabilities and reaction rates at low temperatures. Article in Journal/Newspaper Antarc* Antarctic Macquarie University Research Portal Environmental Pollution 161 143 153 |
institution |
Open Polar |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
description |
Low temperatures and frequent soil freeze-thaw in polar environments present challenges for the immobilisation of metals. To address these challenges we investigated the chemical forms of Pb, Zn and Cu in an Antarctic landfill, examined in vitro reaction kinetics of these metals and orthophosphate at 2 and 22 °C for up to 185 days, and subjected the products to freeze-thaw. Reaction products at both temperatures were similar, but the rate of production varied, with Cu-PO 4 phases forming faster, and the Zn- and Pb-PO 4 phases slower at 2 °C. All metal-orthophosphate phases produced were stable during a 2.5 h freeze-thaw cycle to -30 °C. Metal immobilisation using orthophosphate can be successful in polar regions, but treatments will need to consider differing mineral stabilities and reaction rates at low temperatures. |
format |
Article in Journal/Newspaper |
author |
White, Duanne A. Hafsteinsdóttir, Erla G. Gore, Damian B. Thorogood, Gordon Stark, Scott C. |
spellingShingle |
White, Duanne A. Hafsteinsdóttir, Erla G. Gore, Damian B. Thorogood, Gordon Stark, Scott C. Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments |
author_facet |
White, Duanne A. Hafsteinsdóttir, Erla G. Gore, Damian B. Thorogood, Gordon Stark, Scott C. |
author_sort |
White, Duanne A. |
title |
Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments |
title_short |
Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments |
title_full |
Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments |
title_fullStr |
Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments |
title_full_unstemmed |
Formation and stability of Pb-, Zn-& Cu-PO 4 phases at low temperatures:Implications for heavy metal fixation in polar environments |
title_sort |
formation and stability of pb-, zn-& cu-po 4 phases at low temperatures:implications for heavy metal fixation in polar environments |
publishDate |
2012 |
url |
https://researchers.mq.edu.au/en/publications/4532bd7d-3bd2-41b2-a19e-6285ab330072 https://doi.org/10.1016/j.envpol.2011.09.035 http://www.scopus.com/inward/record.url?scp=80155166455&partnerID=8YFLogxK |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
White , D A , Hafsteinsdóttir , E G , Gore , D B , Thorogood , G & Stark , S C 2012 , ' Formation and stability of Pb-, Zn- & Cu-PO 4 phases at low temperatures : Implications for heavy metal fixation in polar environments ' , Environmental Pollution , vol. 161 , pp. 143-153 . https://doi.org/10.1016/j.envpol.2011.09.035 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.envpol.2011.09.035 |
container_title |
Environmental Pollution |
container_volume |
161 |
container_start_page |
143 |
op_container_end_page |
153 |
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1799485245106421760 |