Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden
Submerged tar-contaminated sediments are generally very loose, which makes remediation challenging. We tested if a modified version of freeze-dredging could be used to remove and dewater such sediments in a canal down-stream a coking plant. PVC hoses carrying a heat medium were placed horizontally i...
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Luleå tekniska universitet, Geoteknologi
2016
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15455 https://doi.org/10.2175/106143015X14362865226950 |
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ftluleatu:oai:DiVA.org:ltu-15455 2023-05-15T17:09:11+02:00 Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden Rostmark, Susanne C. Colombo, Manuel Knutsson, Sven Öberg, Gunilla 2016 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15455 https://doi.org/10.2175/106143015X14362865226950 eng eng Luleå tekniska universitet, Geoteknologi Institute for Resources, Environment and Sustainability (IRES), University of British Columbia, 447-2202 Main Mall, Vancouver, B.C. Canada Water environment research, 1061-4303, 2016, 88:9, s. 847-851 orcid:0000-0002-1365-8552 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15455 doi:10.2175/106143015X14362865226950 PMID 26488721 ISI:000393311300006 Scopus 2-s2.0-84985945796 Local ef7af747-88a5-46de-965d-0cd2337757f0 info:eu-repo/semantics/openAccess freeze-thawing dredging sustainable management of contaminated sediments tar Geotechnical Engineering Geoteknik Article in journal info:eu-repo/semantics/article text 2016 ftluleatu https://doi.org/10.2175/106143015X14362865226950 2022-10-25T20:58:49Z Submerged tar-contaminated sediments are generally very loose, which makes remediation challenging. We tested if a modified version of freeze-dredging could be used to remove and dewater such sediments in a canal down-stream a coking plant. PVC hoses carrying a heat medium were placed horizontally in the submerged sediments. Five days of freezing allowed straightforward removal of most of the sediments. Flat freeze cells were placed side by side in the canal to remove the rest. The freeze-thaw process increased the dry substance (DS) content from approximately 50 to 80%. Outdoors storage under rainy conditions did not re-wet the dried sediments. The material was successfully used as feed-stock in the coking plant, with the double cost-benefit of avoided transportation to deposit and reduced use of coal. The study demonstrates that freeze-dredging can facilitate removal, storage and beneficial re-use of submerged tar-contaminated sediments. Validerad; 2016; Nivå 2; 2016-10-10 (andbra) Article in Journal/Newspaper Luleå Luleå Luleå Luleå University of Technology Publications (DiVA) Water Environment Research 88 9 847 851 |
institution |
Open Polar |
collection |
Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
freeze-thawing dredging sustainable management of contaminated sediments tar Geotechnical Engineering Geoteknik |
spellingShingle |
freeze-thawing dredging sustainable management of contaminated sediments tar Geotechnical Engineering Geoteknik Rostmark, Susanne C. Colombo, Manuel Knutsson, Sven Öberg, Gunilla Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden |
topic_facet |
freeze-thawing dredging sustainable management of contaminated sediments tar Geotechnical Engineering Geoteknik |
description |
Submerged tar-contaminated sediments are generally very loose, which makes remediation challenging. We tested if a modified version of freeze-dredging could be used to remove and dewater such sediments in a canal down-stream a coking plant. PVC hoses carrying a heat medium were placed horizontally in the submerged sediments. Five days of freezing allowed straightforward removal of most of the sediments. Flat freeze cells were placed side by side in the canal to remove the rest. The freeze-thaw process increased the dry substance (DS) content from approximately 50 to 80%. Outdoors storage under rainy conditions did not re-wet the dried sediments. The material was successfully used as feed-stock in the coking plant, with the double cost-benefit of avoided transportation to deposit and reduced use of coal. The study demonstrates that freeze-dredging can facilitate removal, storage and beneficial re-use of submerged tar-contaminated sediments. Validerad; 2016; Nivå 2; 2016-10-10 (andbra) |
format |
Article in Journal/Newspaper |
author |
Rostmark, Susanne C. Colombo, Manuel Knutsson, Sven Öberg, Gunilla |
author_facet |
Rostmark, Susanne C. Colombo, Manuel Knutsson, Sven Öberg, Gunilla |
author_sort |
Rostmark, Susanne C. |
title |
Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden |
title_short |
Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden |
title_full |
Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden |
title_fullStr |
Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden |
title_full_unstemmed |
Removal and Re-use of Tar-contaminated Sediment by Freeze-dredging at a Coking Plant Luleå, Sweden |
title_sort |
removal and re-use of tar-contaminated sediment by freeze-dredging at a coking plant luleå, sweden |
publisher |
Luleå tekniska universitet, Geoteknologi |
publishDate |
2016 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15455 https://doi.org/10.2175/106143015X14362865226950 |
genre |
Luleå Luleå Luleå |
genre_facet |
Luleå Luleå Luleå |
op_relation |
Water environment research, 1061-4303, 2016, 88:9, s. 847-851 orcid:0000-0002-1365-8552 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15455 doi:10.2175/106143015X14362865226950 PMID 26488721 ISI:000393311300006 Scopus 2-s2.0-84985945796 Local ef7af747-88a5-46de-965d-0cd2337757f0 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.2175/106143015X14362865226950 |
container_title |
Water Environment Research |
container_volume |
88 |
container_issue |
9 |
container_start_page |
847 |
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851 |
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