Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-24T18:53:06.654Z Has data issue: false hasContentIssue false
  • English
  • Français

Reactive nanoparticles in chalk: implications for sequestration of metals from groundwater

Published online by Cambridge University Press:  05 July 2018

Z. Balogh ,
S. L. S. Stipp ,
K. Bechgaard  and
E. Johnson
Z. Balogh*
Affiliation:
Nano-Science Center, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
S. L. S. Stipp
Affiliation:
Nano-Science Center, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
K. Bechgaard
Affiliation:
Nano-Science Center, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
E. Johnson
Affiliation:
Nano-Science Center, Niels Bohr Institute, Copenhagen University, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark Department of Materials Research, RISØ DTU, DK-4000 Roskilde, Denmark
*
*E-mail: zb@nano.ku.dk
Get access Rights & Permissions [Opens in a new window]

Abstract

Water supplies from chalk aquifers in northern Europe can be contaminated by semi-metals such as As and metals such as Cr, Ni and many more, as a result of leaks from landfills, industrial sites and from natural oxidation of pyrite in the chalk, releasing trace elements. Chalk, which is predominantly calcite (CaCO3), has the ability to immobilize Ni, but its uptake by chalk is sometimes greater than expected. In an attempt to identify the controls on metal uptake, chalk samples from Klintholm I/S (Fyn, Denmark) were decalcified in EDTA solution and the residue was examined with transmission electron microscopy (TEM) for morphology and composition. Energy dispersive X-ray spectrometry (EDXS) revealed minor Si and Al (probably clay) and major Mn and Fe as (hydr)oxides. These natural nanoparticles have very large surface areas contributing to chalk’s uptake capacity for Ni and other metals from groundwater.

Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 373 - 376
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bürki, P.M., Dent Glasser, L.S. and Smith, D.N. (1982) Surface coatings on ancient coccoliths. Nature, 297, 145–147.CrossRefGoogle Scholar
Dent Glasser, L.S. and Smith, D.N. (1983) Siliceous coatings on fossil coccoliths — how did they arise? In: The Scientific study of flint and chert: Proceedings of the 4th international flint symposium. Brighton Polytechnic, UK.Google Scholar
Lakshtanov, L.Z. and Stipp, S.L.S. (2007) Experimental study of nickel(II) interaction with calcite: Adsorption and coprecipitation. Geochimica et Cosmochimica Ada, 71, 3686–3697.CrossRefGoogle Scholar
Stipp, S.L.S., Hansen, M., Kristensen, R., Hochella, M.F. Jr., Bennedsen, L., Dideriksen, K., Balic Zunic, T., Léonard, D. and Mathieu, H.J. (2002) Behaviour of Fe-oxides relevant to contaminant uptake in the environment. Chemical Geology, 190, 321–337.CrossRefGoogle Scholar
Stipp, S.L.S., Karlby, L., Lakshtanov, L.Z. and Jørgensen, P.R. (2005) Nikkelmobilitet i kalk: Delrapport. Optagelses forsøg (Part I, Uptake Study) Cooperative project with Hedeselskabet; report presented to Roskilde Ami, 61 pp.Google Scholar