Field evaluation of in situ remediation of a heavy metal contaminated soil using lime and red-mud

A - Papers appearing in refereed journals

Gray, C. W., Dunham, S. J., Dennis, P. G., Zhao, F-J. and McGrath, S. P. 2006. Field evaluation of in situ remediation of a heavy metal contaminated soil using lime and red-mud. Environmental Pollution. 142 (3), pp. 530-539. https://doi.org/10.1016/j.envpol.2005.10.017

AuthorsGray, C. W., Dunham, S. J., Dennis, P. G., Zhao, F-J. and McGrath, S. P.
Abstract

We evaluated the effectiveness of lime and red mud (by-product of aluminium manufacturing) to reduce metal availability to Festuca rubra and to allow re-vegetation on a highly contaminated brown-field site. Application of both lime and red mud (at 3 or 5%) increased soil pH and decreased metal availability. Festuca rubra failed to establish in the control plots, but grew to a near complete vegetative cover on the amended plots. The most effective treatment in decreasing grass metal concentrations in the first year was 5% red mud, but by year two all amendments were equally effective. In an additional pot experiment, P application in combination with red mud or lime decreased the Pb concentration, but not total uptake of Pb in Festuca rubra compared to red mud alone. The results show that both red mud and lime can be used to remediate a heavily contaminated acid soil to allow re-vegetation

KeywordsRed mud; Lime; Phosphate; Heavy metals ; In situ remediation
Year of Publication2006
JournalEnvironmental Pollution
Journal citation142 (3), pp. 530-539
Digital Object Identifier (DOI)https://doi.org/10.1016/j.envpol.2005.10.017
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or code512
Soil protection and remediation by chemical and biological approaches
Phytoremediation of contaminated soils
Project: 4534
Project: 4323
Output statusPublished
Publication dates
Online13 Nov 2005
Publication process dates
Accepted13 Oct 2005
ISSN0269-7491
PublisherElsevier Sci Ltd

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