The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit
Dry covers can be applied above tailings to reduce and prevent formation of acid mine drainage and leaching of contaminants. Efficiency of covers is affected by different parameters, of which temperature change under climate change context is one. Here, a laboratory column leaching experiment was pe...
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Online Access: | https://doi.org/10.2166/wcc.2021.068 https://doaj.org/article/640072859fd84f1e9a0eb69a78d66c46 |
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ftdoajarticles:oai:doaj.org/article:640072859fd84f1e9a0eb69a78d66c46 2023-05-15T15:37:18+02:00 The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit Jinmei Lu Tiina Leiviskä Ingar Walder 2021-12-01T00:00:00Z https://doi.org/10.2166/wcc.2021.068 https://doaj.org/article/640072859fd84f1e9a0eb69a78d66c46 EN eng IWA Publishing http://jwcc.iwaponline.com/content/12/8/3573 https://doaj.org/toc/2040-2244 https://doaj.org/toc/2408-9354 2040-2244 2408-9354 doi:10.2166/wcc.2021.068 https://doaj.org/article/640072859fd84f1e9a0eb69a78d66c46 Journal of Water and Climate Change, Vol 12, Iss 8, Pp 3573-3581 (2021) column dry cover sewage sludge tailings temperature Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 article 2021 ftdoajarticles https://doi.org/10.2166/wcc.2021.068 2022-12-31T16:20:53Z Dry covers can be applied above tailings to reduce and prevent formation of acid mine drainage and leaching of contaminants. Efficiency of covers is affected by different parameters, of which temperature change under climate change context is one. Here, a laboratory column leaching experiment was performed under four temperatures, 5, 10, 14, and 18 °C on unoxidized tailings from Ballangen, Norway. 600 mL of water was added to each column every second week and leachate was collected and analyzed for pH, salinity, alkalinity, concentrations of sulfate, Co, Fe, Mn, Ni, and Zn. A thin layer of digested sewage sludge was added to columns after the 16th leaching cycle. In total, 21 leaching cycles were performed. Results showed low oxidation of tailings and therefore high pH and low salinity, SO42−, Fe, Ni, and Co in the leachates at leaching temperature of 5 °C. Addition of sludge cover slowed down oxidation of underlying tailings and decreased leaching of SO42−, Fe, Mn, Co, Ni, and Zn from the tailings deposit, especially at relatively high temperatures. 10 °C is a threshold temperature, below which leaching is not affected by the cover addition so much. At a leaching temperature higher than 10 °C, the sludge cover addition can reduce the leaching of elements significantly. HIGHLIGHTS Temperature as an important impact on the efficiency of dry covers in preventing leaching of contaminants from waste deposit.; 10 °C is a threshold temperature, below which the cover addition is not very efficient.; At a leaching temperature higher than 10 °C, the sludge cover addition can reduce the leaching of elements significantly.; Article in Journal/Newspaper Ballangen Directory of Open Access Journals: DOAJ Articles Norway Ballangen ENVELOPE(16.831,16.831,68.343,68.343) Journal of Water and Climate Change 12 8 3573 3581 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
column dry cover sewage sludge tailings temperature Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 |
spellingShingle |
column dry cover sewage sludge tailings temperature Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Jinmei Lu Tiina Leiviskä Ingar Walder The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit |
topic_facet |
column dry cover sewage sludge tailings temperature Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 |
description |
Dry covers can be applied above tailings to reduce and prevent formation of acid mine drainage and leaching of contaminants. Efficiency of covers is affected by different parameters, of which temperature change under climate change context is one. Here, a laboratory column leaching experiment was performed under four temperatures, 5, 10, 14, and 18 °C on unoxidized tailings from Ballangen, Norway. 600 mL of water was added to each column every second week and leachate was collected and analyzed for pH, salinity, alkalinity, concentrations of sulfate, Co, Fe, Mn, Ni, and Zn. A thin layer of digested sewage sludge was added to columns after the 16th leaching cycle. In total, 21 leaching cycles were performed. Results showed low oxidation of tailings and therefore high pH and low salinity, SO42−, Fe, Ni, and Co in the leachates at leaching temperature of 5 °C. Addition of sludge cover slowed down oxidation of underlying tailings and decreased leaching of SO42−, Fe, Mn, Co, Ni, and Zn from the tailings deposit, especially at relatively high temperatures. 10 °C is a threshold temperature, below which leaching is not affected by the cover addition so much. At a leaching temperature higher than 10 °C, the sludge cover addition can reduce the leaching of elements significantly. HIGHLIGHTS Temperature as an important impact on the efficiency of dry covers in preventing leaching of contaminants from waste deposit.; 10 °C is a threshold temperature, below which the cover addition is not very efficient.; At a leaching temperature higher than 10 °C, the sludge cover addition can reduce the leaching of elements significantly.; |
format |
Article in Journal/Newspaper |
author |
Jinmei Lu Tiina Leiviskä Ingar Walder |
author_facet |
Jinmei Lu Tiina Leiviskä Ingar Walder |
author_sort |
Jinmei Lu |
title |
The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit |
title_short |
The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit |
title_full |
The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit |
title_fullStr |
The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit |
title_full_unstemmed |
The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit |
title_sort |
effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from ballangen tailings deposit |
publisher |
IWA Publishing |
publishDate |
2021 |
url |
https://doi.org/10.2166/wcc.2021.068 https://doaj.org/article/640072859fd84f1e9a0eb69a78d66c46 |
long_lat |
ENVELOPE(16.831,16.831,68.343,68.343) |
geographic |
Norway Ballangen |
geographic_facet |
Norway Ballangen |
genre |
Ballangen |
genre_facet |
Ballangen |
op_source |
Journal of Water and Climate Change, Vol 12, Iss 8, Pp 3573-3581 (2021) |
op_relation |
http://jwcc.iwaponline.com/content/12/8/3573 https://doaj.org/toc/2040-2244 https://doaj.org/toc/2408-9354 2040-2244 2408-9354 doi:10.2166/wcc.2021.068 https://doaj.org/article/640072859fd84f1e9a0eb69a78d66c46 |
op_doi |
https://doi.org/10.2166/wcc.2021.068 |
container_title |
Journal of Water and Climate Change |
container_volume |
12 |
container_issue |
8 |
container_start_page |
3573 |
op_container_end_page |
3581 |
_version_ |
1766367769881739264 |