Skip to main content

Research Repository

Advanced Search

Remediation of a historically Pb contaminated soil using a model natural Mn oxide waste

McCann, C.M; Gray, N.D.; Tourney, J.; Davenport, R.J.; Wade, M.; Finlay, N.C.; Hudson-Edwards, K.A.; Johnson, K.L.

Remediation of a historically Pb contaminated soil using a model natural Mn oxide waste Thumbnail


Authors

C.M McCann

N.D. Gray

J. Tourney

R.J. Davenport

M. Wade

N.C. Finlay

K.A. Hudson-Edwards



Abstract

A natural Mn oxide (NMO) waste was assessed as an in situ remediation amendment for Pb contaminated sites. The viability of this was investigated using a 10 month lysimeter trial, wherein a historically Pb contaminated soil was amended with a 10% by weight model NMO. The model NMO was found to have a large Pb adsorption capacity (qmax 346 ± 14 mg g−1). However, due to the heterogeneous nature of the Pb contamination in the soils (3650.54–9299.79 mg kg−1), no treatment related difference in Pb via geochemistry could be detected. To overcome difficulties in traditional geochemical techniques due to pollutant heterogeneity we present a new method for unequivocally proving metal sorption to in situ remediation amendments. The method combines two spectroscopic techniques; namely electron probe microanalysis (EPMA) and X-ray photoelectron spectroscopy (XPS). Using this we showed Pb immobilisation on NMO, which were Pb free prior to their addition to the soils. Amendment of the soil with exogenous Mn oxide had no effect on microbial functioning, nor did it perturb the composition of the dominant phyla. We conclude that NMOs show excellent potential as remediation amendments.

Citation

McCann, C., Gray, N., Tourney, J., Davenport, R., Wade, M., Finlay, N., …Johnson, K. (2015). Remediation of a historically Pb contaminated soil using a model natural Mn oxide waste. Chemosphere, 138, 211-217. https://doi.org/10.1016/j.chemosphere.2015.05.054

Journal Article Type Article
Acceptance Date Apr 18, 2015
Online Publication Date Jun 11, 2015
Publication Date Nov 1, 2015
Deposit Date Apr 18, 2016
Publicly Available Date Mar 29, 2024
Journal Chemosphere
Print ISSN 0045-6535
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 138
Pages 211-217
DOI https://doi.org/10.1016/j.chemosphere.2015.05.054

Files





You might also like



Downloadable Citations