The implications of integrated assessment and modelling studies for the future remediation of chromite ore processing residue disposal sites

Farmer, J.G.; Paterson, E.; Bewley, R.J.F.; Geelhoed, J.S.; Hillier, S.; Meeussen, J.C.L.; Lumsdon, D.G.; Thomas, R.P.; Graham, M.C.

doi:10.1016/J.SCITOTENV.2005.08.027

Title

The implications of integrated assessment and modelling studies for the future remediation of chromite ore processing residue disposal sites

Author

Farmer, J.G.

Paterson, E.

Bewley, R.J.F.

Geelhoed, J.S.

Hillier, S.

Meeussen, J.C.L.

Lumsdon, D.G.

Thomas, R.P.

Graham, M.C.

Abstract

Chromite ore processing residue (COPR) waste from a former chromium chemical works (1830-1968) is still contaminating groundwater in Glasgow, Scotland, with carcinogenic hexavalent chromium, Cr(VI). An integrated analytical, experimental and modelling approach has identified and accounted for mineral phases and processes responsible for the retention and release of Cr(VI) under prevailing field conditions. Both the nature of mineral phase retention and the buffered high pH of the sites, however, militate against direct remediative treatment of the source material, for example by the application of generic methods (e.g. FeSO4) that have been successfully employed elsewhere for the reduction of Cr(VI) to Cr(III) in other matrices. The interception and treatment of groundwater to remove Cr(VI) and the capping of sites to reduce human exposure to airborne Cr(VI)-contaminated dust may well be more realistic and effective, at least in the short to medium term. (c) 2005 Elsevier B.V. All rights reserved.

Language

English

Source (journal)

The science of the total environment. - Amsterdam, 1972, currens

Publication

Amsterdam : 2006

ISSN

0048-9697 [print]

1879-1026 [online]

DOI

10.1016/J.SCITOTENV.2005.08.027

Volume/pages