Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Role of competing ions in the mobilization of arsenic in groundwater of Bengal Basin: Insight from surface complexation modeling
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik. (KTH - International Groundwater Arsenic Research Group)
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik. (KTH - International Groundwater Arsenic Research Group)ORCID-id: 0000-0001-8771-7941
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Mark- och vattenteknik. (KTH - International Groundwater Arsenic Research Group)
Vise andre og tillknytning
2014 (engelsk)Inngår i: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 55, s. 30-39Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This study assesses the role of competing ions in the mobilization of arsenic (As) by surface complexation modeling of the temporal variability of As in groundwater. The potential use of two different surface complexation models (SCMs), developed for ferrihydrite and goethite, has been explored to account for the temporal variation of As(III) and As(V) concentration, monitored in shallow groundwater of Bengal Basin over a period of 20 months. The SCM for ferrihydrite appears as the better predictor of the observed variation in both As(III) and As(V) concentrations in the study sites. It is estimated that among the competing ions, PO43- is the major competitor of As(III) and As(V) adsorption onto Fe oxyhydroxide, and the competition ability decreases in the order PO43- >> Fe(II) > H4SiO4 = HCO- (3.) It is further revealed that a small change in pH can also have a significant effect on the mobility of As(III) and As(V) in the aquifers. A decrease in pH increases the concentration of As(III), whereas it decreases the As(V) concentration and vice versa. The present study suggests that the reductive dissolution of Fe oxyhydroxide alone cannot explain the observed high As concentration in groundwater of the Bengal Basin. This study supports the view that the reductive dissolution of Fe oxyhydroxide followed by competitive sorption reactions with the aquifer sediment is the processes responsible for As enrichment in groundwater.

sted, utgiver, år, opplag, sider
Elsevier, 2014. Vol. 55, s. 30-39
Emneord [en]
Bengal Basin, Groundwater, Arsenic mobilization, Temporal variability, Competing ions, Surface complexation modeling
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-145803DOI: 10.1016/j.watres.2014.02.002ISI: 000335201500004Scopus ID: 2-s2.0-84896893120OAI: oai:DiVA.org:kth-145803DiVA, id: diva2:721556
Merknad

QC 20140604

Tilgjengelig fra: 2014-06-04 Laget: 2014-06-02 Sist oppdatert: 2017-12-05bibliografisk kontrollert

Open Access i DiVA

fulltext(1562 kB)427 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1562 kBChecksum SHA-512
f0576c1c5c2d123d04e1cae6e57ea412ea076cea4f407c50df2b671ef29dcf00ffa400a6802b5914c940b5337c197ce0911b567417e0d211788cf713cb45590f
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekstScopusScience direct

Personposter BETA

Gustafsson, Jon PetterBhattacharya, Prosun

Søk i DiVA

Av forfatter/redaktør
Biswas, AshisGustafsson, Jon PetterHalder, DiptiBhattacharya, Prosun
Av organisasjonen
I samme tidsskrift
Water Research

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 427 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 1084 treff
RefereraExporteraLink to record
Permanent link

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