Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland
A previous study showed that the sediment of Sisimiut Harbour, Greenland is polluted with Cu and Cd to an extent where toxicological effects must be expected. This study was aimed at evaluating the possibility for removing Cu and Cd from this sediment by an electrodialytic method and also to evaluat...
Published in: | Journal of Hazardous Materials |
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Language: | English |
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2007
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Online Access: | https://orbit.dtu.dk/en/publications/2cd8b682-8b30-468a-ad63-38e576e55658 https://doi.org/10.1016/j.jhazmat.2006.08.002 |
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ftdtupubl:oai:pure.atira.dk:publications/2cd8b682-8b30-468a-ad63-38e576e55658 2023-06-11T04:12:13+02:00 Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland Ottosen, Lisbeth M. Nystrøm, Gunvor Marie Jensen, Pernille Erland Villumsen, Arne 2007 https://orbit.dtu.dk/en/publications/2cd8b682-8b30-468a-ad63-38e576e55658 https://doi.org/10.1016/j.jhazmat.2006.08.002 eng eng info:eu-repo/semantics/restrictedAccess Ottosen , L M , Nystrøm , G M , Jensen , P E & Villumsen , A 2007 , ' Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland ' , Journal of Hazardous Materials , vol. 140 , no. 1 , pp. 271-279 . https://doi.org/10.1016/j.jhazmat.2006.08.002 article 2007 ftdtupubl https://doi.org/10.1016/j.jhazmat.2006.08.002 2023-05-03T22:54:34Z A previous study showed that the sediment of Sisimiut Harbour, Greenland is polluted with Cu and Cd to an extent where toxicological effects must be expected. This study was aimed at evaluating the possibility for removing Cu and Cd from this sediment by an electrodialytic method and also to evaluate the removal rate of the two heavy metals. The sediment was suspended in distilled water during application of current. Both heavy metals were removed successfully. The Cu concentration was reduced from 97 to 16 mg/kg and the Cd concentration was reduced from 0.55 to 0.03 mg/kg after 28 days with an applied current density of 1.2 mA/cm2. However, it was seen that the removal rate decreased considerably after 3 days with an applied current density of 0.5 mA/cm2 and the major part of the two heavy metals was removed during the first 3 days (the Cu concentration was reduced with 74% and the Cd concentration with 80%). Thus a large reduction in concentrations can be obtained relatively fast. During the process of electrodialytic treatment the sediment suspension is acidified and reaches pH 2 after about 3 days (with 0.5 mA cm2), where it stabilizes. A comparison with chemical extraction in HNO3 at about the same pH showed that 50-70% more Cu and 11% more Cd was removed during the electrodialytic treatment. Article in Journal/Newspaper Greenland Sisimiut Technical University of Denmark: DTU Orbit Greenland Sisimiut ENVELOPE(-53.674,-53.674,66.939,66.939) Journal of Hazardous Materials 140 1-2 271 279 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
A previous study showed that the sediment of Sisimiut Harbour, Greenland is polluted with Cu and Cd to an extent where toxicological effects must be expected. This study was aimed at evaluating the possibility for removing Cu and Cd from this sediment by an electrodialytic method and also to evaluate the removal rate of the two heavy metals. The sediment was suspended in distilled water during application of current. Both heavy metals were removed successfully. The Cu concentration was reduced from 97 to 16 mg/kg and the Cd concentration was reduced from 0.55 to 0.03 mg/kg after 28 days with an applied current density of 1.2 mA/cm2. However, it was seen that the removal rate decreased considerably after 3 days with an applied current density of 0.5 mA/cm2 and the major part of the two heavy metals was removed during the first 3 days (the Cu concentration was reduced with 74% and the Cd concentration with 80%). Thus a large reduction in concentrations can be obtained relatively fast. During the process of electrodialytic treatment the sediment suspension is acidified and reaches pH 2 after about 3 days (with 0.5 mA cm2), where it stabilizes. A comparison with chemical extraction in HNO3 at about the same pH showed that 50-70% more Cu and 11% more Cd was removed during the electrodialytic treatment. |
format |
Article in Journal/Newspaper |
author |
Ottosen, Lisbeth M. Nystrøm, Gunvor Marie Jensen, Pernille Erland Villumsen, Arne |
spellingShingle |
Ottosen, Lisbeth M. Nystrøm, Gunvor Marie Jensen, Pernille Erland Villumsen, Arne Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland |
author_facet |
Ottosen, Lisbeth M. Nystrøm, Gunvor Marie Jensen, Pernille Erland Villumsen, Arne |
author_sort |
Ottosen, Lisbeth M. |
title |
Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland |
title_short |
Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland |
title_full |
Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland |
title_fullStr |
Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland |
title_full_unstemmed |
Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland |
title_sort |
electrodialytic extraction of cd and cu from sediment from sisimiut harbour, greenland |
publishDate |
2007 |
url |
https://orbit.dtu.dk/en/publications/2cd8b682-8b30-468a-ad63-38e576e55658 https://doi.org/10.1016/j.jhazmat.2006.08.002 |
long_lat |
ENVELOPE(-53.674,-53.674,66.939,66.939) |
geographic |
Greenland Sisimiut |
geographic_facet |
Greenland Sisimiut |
genre |
Greenland Sisimiut |
genre_facet |
Greenland Sisimiut |
op_source |
Ottosen , L M , Nystrøm , G M , Jensen , P E & Villumsen , A 2007 , ' Electrodialytic extraction of Cd and Cu from sediment from Sisimiut Harbour, Greenland ' , Journal of Hazardous Materials , vol. 140 , no. 1 , pp. 271-279 . https://doi.org/10.1016/j.jhazmat.2006.08.002 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.jhazmat.2006.08.002 |
container_title |
Journal of Hazardous Materials |
container_volume |
140 |
container_issue |
1-2 |
container_start_page |
271 |
op_container_end_page |
279 |
_version_ |
1768387906351661056 |