Library Open Repository

Fertilizer Amendment of Mining-Impacted Soils from Broken Hill, Australia: Fixation or Release of Contaminants?

Downloads

Downloads per month over past year

Munksgaard, NC and Lottermoser, BG (2011) Fertilizer Amendment of Mining-Impacted Soils from Broken Hill, Australia: Fixation or Release of Contaminants? Water, Air and Soil Pollution, 215. pp. 373-397.

[img] PDF
Munksgaard_&_Lottermoser_2011.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

The aim of the study was to appraise various types of phosphate fertilizers (bone meal, superphosphate, triple superphosphate, and potassium orthophosphate) for immobilizing metals andmetalloids in mining-impacted soils from Broken Hill, Australia. Soils were rich in metals (Pb, Zn, Cu, and Cd) and metalloids (As and Sb) which were mainly contained in minor to trace amounts of coronadite [PbMn8O16], kintoreite [PbFe3(PO4)2(OH,H2O)6], Pb, and Zn sulfides and sulfates (possibly sphalerite, galena, and anglesite) as well as in unidentified soluble metalbearing phases. Phosphate stabilization experiments were conducted as kinetic column leaching experiments, and chemical and mineralogical changes were assessed using elemental, sulfur isotope, and XRD analyses as well as electron microprobe phase mapping. The application of phosphate fertilizer to the metalcontaminated topsoils led to mineralogical changes, including the formation of secondary metal-bearing phosphates. The elemental concentrations of leachates were used as a criterion to assess the performance of phosphate treatments. Potassium orthophosphate fertilizer was the most effective amendment for Cd stabilization; superphosphate and triple superphosphate fertilizers were the most effective amendments for Pb stabilization. By contrast, the release of As, Cu, Mn, Sb, and Zn were not significantly suppressed, and in several cases, increased, using bone meal, superphosphate, triple superphosphate, and potassium orthophosphate amendments. This study indicates that in situ phosphate stabilization of miningimpacted soils at Broken Hill would most likely be a complex and impractical undertaking in residential areas due to the risk of substantial metal, metalloid, phosphate, and sulfate release.

Item Type: Article
Journal or Publication Title: Water, Air and Soil Pollution
Page Range: pp. 373-397
Identification Number - DOI: 10.1007/s11270-010-0485-y
Additional Information: The final publication is available at http://www.springerlink.com
Date Deposited: 12 Aug 2011 04:44
Last Modified: 18 Nov 2014 04:21
URI: http://eprints.utas.edu.au/id/eprint/11503
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page