Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Extraction of arsenic from soils contaminated with wood preservation chemicals
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Arkitektur och vatten.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0001-7585-4017
KTH-International Groundwater Arsenic Research Group, Department of Land and Water Resources Engineering, Royal Institute of Technology (KTH),.
2010 (Engelska)Ingår i: Soil & sediment contamination, ISSN 1532-0383, E-ISSN 1549-7887, Vol. 19, nr 2, s. 142-159Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Three soil samples contaminated by chromated zinc arsenate (CZA) or chromated copper arsenate (CCA) were investigated in a laboratory scale to study As mobilization and to identify a chemical agent that could be used in soil washing to extract arsenic. Besides high As extraction, the cost, occupational health issues and technical aspects were considered when selecting the chemical. Arsenic is strongly bound to CZA/CCA soils; only ∼50% of the tot-As was removed from water-washed soils. High Fe or Al mobilization is not necessarily indicative of high As removal from CZA/CCA soils. A high Cu/As-ratio and a large amount of soluble Ca in the soil hampered As extraction. The high ratio can be an indication of stable Cu-arsenates in soil. Calcium can react with the extraction agent or with As during extraction. Sodium hydroxide, dithionite with citrate (and oxalate) (dithionite solutions), and oxalate with citrate were the most efficient chemicals for removing As from the soils. The disadvantages of using these strong chemicals are: a high cost (oxalate with citrate); damage to equipment (dithionite solutions); an adverse impact on occupational health (dithionite solutions); or a deterioration in soil quality after extraction (NaOH and dithionite solutons). Phosphate, solutions based on NH2OH·HCl, or citrate were not efficient in mobilizing As from the soils.

Ort, förlag, år, upplaga, sidor
2010. Vol. 19, nr 2, s. 142-159
Nyckelord [en]
Arsenic, Extraction, CCA, Contaminated soil, Soil washing, Other technology - Environmental engineering
Nyckelord [sv]
Arsenik, Extraktion, CCA, Förorenad jord, Jordtvätt, Övriga teknikvetenskaper - Miljöteknik
Nationell ämneskategori
Geokemi Vattenteknik
Forskningsämne
Tillämpad geologi; VA-teknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-12572DOI: 10.1080/15320380903390539ISI: 000276430500002Scopus ID: 2-s2.0-77951146414Lokalt ID: bbc66ec0-319b-11df-806d-000ea68e967bOAI: oai:DiVA.org:ltu-12572DiVA, id: diva2:985523
Projekt
Pilotskale utvärdering av jordtvätt för sanering av arsenik-kontaminerad jord
Anmärkning
Validerad; 2010; 20100317 (learas)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Amofah, Lea RastasMaurice, Christian

Sök vidare i DiVA

Av författaren/redaktören
Amofah, Lea RastasMaurice, Christian
Av organisationen
Arkitektur och vattenGeovetenskap och miljöteknik
I samma tidskrift
Soil & sediment contamination
GeokemiVattenteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 129 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf