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Undersökning av parametrar som kan öka mobiliteten av arsenik i grundvatten efter jordtvätt i Gudarp.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2017 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Investigation of parameters that can increase the mobility of arsenic in groundwater after soil washing in Gudarp. (English)
Abstract [en]

After soil washing in the former wood preservation industry, the concentration of As (arsenic) have increased in the groundwater. The purpose of this study was to investigate different parameters that could increase the mobility of As in the groundwater. The impact the soil wash has on the soil and it is effect on mobility will also be consider. This study will also show how As, Cu and Cr changes over time, however, the focus will be on As when the soil washing have been controlled by the As concentration. Soil and groundwater samples have been collected. Through filtration Fe (iron), Al (aluminium) and TOC (Total organic carbon) together with As have been analysed to determine a possible relation. Redox potential and As specification have also been analysed. As occur probably dissolved in the groundwater or together with DOC (Dissolved organic carbon). No link between colloids and complexes with Fe and Al together with As was found through filtration. Redox potential has no impact since the water was well oxygenated and As occurred as As(V). As and Cu follow the same time trend, while different for Cr. It is clear that the concentration of As increased in the groundwater after soil washing and that soil excavating have not the same problem with increased levels. The ground structure is changed and the clay mineral with adsorption surface is removed with soil washing. This could explain the increase of As in the groundwater. 

Place, publisher, year, edition, pages
2017.
Keywords [en]
CCA, mobility, groundwater, soil washing, filtration
National Category
Other Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:umu:diva-142068OAI: oai:DiVA.org:umu-142068DiVA, id: diva2:1158367
External cooperation
Tyréns AB
Subject / course
Examensarbete i Naturgeografi för kandidatexamen
Educational program
Bachelor of Science in Biology and Earthscience
Presentation
2017-10-30, NC280, Umeå, 10:00 (Swedish)
Supervisors
Examiners
Available from: 2017-11-21 Created: 2017-11-20 Last updated: 2017-11-21Bibliographically approved

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Dahlqvist examensarbete(1084 kB)66 downloads
File information
File name FULLTEXT01.pdfFile size 1084 kBChecksum SHA-512
7aa625c982d670b28ad3f12f36ccdcf19fce0f2c3a5e37a07c9dbb285ea5061871e03d3a748ff082bbbb5f9248d9ec5946eaf185b93123cffbfa04c7e23df0cc
Type fulltextMimetype application/pdf

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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