Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration
Natural groundwater from the towns of Wabana and Freshwater and treated well water from the town of Wabana in Newfoundland and Labrador, Canada were tested separately and together in sand columns to study the removal of arsenic. The most ideal conditions for arsenic removal appeared to include an ar...
Published in: | Environmental Geochemistry and Health |
---|---|
Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Springer Netherlands
2020
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641935/ http://www.ncbi.nlm.nih.gov/pubmed/32696199 https://doi.org/10.1007/s10653-020-00671-7 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:7641935 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:7641935 2023-05-15T17:22:31+02:00 Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration Coles, Cynthia A. Rohail, Danial 2020-07-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641935/ http://www.ncbi.nlm.nih.gov/pubmed/32696199 https://doi.org/10.1007/s10653-020-00671-7 en eng Springer Netherlands http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641935/ http://www.ncbi.nlm.nih.gov/pubmed/32696199 http://dx.doi.org/10.1007/s10653-020-00671-7 © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Environ Geochem Health Original Paper Text 2020 ftpubmed https://doi.org/10.1007/s10653-020-00671-7 2020-11-15T01:38:31Z Natural groundwater from the towns of Wabana and Freshwater and treated well water from the town of Wabana in Newfoundland and Labrador, Canada were tested separately and together in sand columns to study the removal of arsenic. The most ideal conditions for arsenic removal appeared to include an arsenic concentration of approximately 35 µg/L and lower, an Fe:As mass ratio in the order of 65 and lower, and aeration of the sand media. Active aeration by pumping air though the filter, passive aeration by scraping off top layers of sand and virtual aeration by diluting the strength of the water being treated, were employed and compared. For tests where groundwater from the towns of Wabana and Freshwater was combined, arsenic removal was optimized and other elements, in addition to iron, were also correlated with effluent arsenic. Further, for these same tests there was a gradual increase in effluent pH that could have been due to oxygen depletion or gradually more reducing conditions in the sand column. Where Ni, Mn and Zn were correlated with effluent arsenic it was concluded that the increase in pH increased heavy metal removal and arsenic release. In the test where the treated Wabana water made up a greater proportion of the mix than the Wabana groundwater, lithium was also correlated with arsenic. Text Newfoundland PubMed Central (PMC) Canada Newfoundland Environmental Geochemistry and Health 42 11 4051 4064 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Original Paper |
spellingShingle |
Original Paper Coles, Cynthia A. Rohail, Danial Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
topic_facet |
Original Paper |
description |
Natural groundwater from the towns of Wabana and Freshwater and treated well water from the town of Wabana in Newfoundland and Labrador, Canada were tested separately and together in sand columns to study the removal of arsenic. The most ideal conditions for arsenic removal appeared to include an arsenic concentration of approximately 35 µg/L and lower, an Fe:As mass ratio in the order of 65 and lower, and aeration of the sand media. Active aeration by pumping air though the filter, passive aeration by scraping off top layers of sand and virtual aeration by diluting the strength of the water being treated, were employed and compared. For tests where groundwater from the towns of Wabana and Freshwater was combined, arsenic removal was optimized and other elements, in addition to iron, were also correlated with effluent arsenic. Further, for these same tests there was a gradual increase in effluent pH that could have been due to oxygen depletion or gradually more reducing conditions in the sand column. Where Ni, Mn and Zn were correlated with effluent arsenic it was concluded that the increase in pH increased heavy metal removal and arsenic release. In the test where the treated Wabana water made up a greater proportion of the mix than the Wabana groundwater, lithium was also correlated with arsenic. |
format |
Text |
author |
Coles, Cynthia A. Rohail, Danial |
author_facet |
Coles, Cynthia A. Rohail, Danial |
author_sort |
Coles, Cynthia A. |
title |
Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
title_short |
Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
title_full |
Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
title_fullStr |
Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
title_full_unstemmed |
Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
title_sort |
effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration |
publisher |
Springer Netherlands |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641935/ http://www.ncbi.nlm.nih.gov/pubmed/32696199 https://doi.org/10.1007/s10653-020-00671-7 |
geographic |
Canada Newfoundland |
geographic_facet |
Canada Newfoundland |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Environ Geochem Health |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7641935/ http://www.ncbi.nlm.nih.gov/pubmed/32696199 http://dx.doi.org/10.1007/s10653-020-00671-7 |
op_rights |
© The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10653-020-00671-7 |
container_title |
Environmental Geochemistry and Health |
container_volume |
42 |
container_issue |
11 |
container_start_page |
4051 |
op_container_end_page |
4064 |
_version_ |
1766109225272999936 |