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Type: Journal article
Title: Copper availability in seven Israeli soils incubated with and without biosolids
Author: Oliver, I.
Hass, A.
Merrington, G.
Fine, P.
McLaughlin, M.
Citation: Journal of Environmental Quality, 2005; 34(2):508-513
Publisher: Amer Soc Agronomy
Issue Date: 2005
ISSN: 0047-2425
Statement of
I. W. Oliver, A. Hass, G. Merrington, P. Fine and M. J. McLaughlin
Abstract: Land application is becoming a preferred option for disposal of sewage sludge (biosolids) from wastewater treatment plants. However, it creates potential risks due to the heavy metal contents of these materials, with copper (Cu) being of chief concern. The long-term fate of biosolid metals applied to agricultural soils is not well understood, particularly in the soils of the Middle East. This investigation was conducted to determine whether the availability of Cu changes with time in biosolid-amended and nonamended soils from Israel. Seven soils, typifying the span of properties and formation environments encountered in Israel, were incubated with and without biosolids for 7 yr, and changes in organic carbon (OC) content and labile Cu concentration were determined. Isotopic exchange techniques, using 64Cu, and ion activity measurements, using a Cu2+ ion selective electrode, revealed that the available Cu concentration remained relatively low and stable over the 7-yr incubation. This was despite substantial reductions in OC. This study shows that, with regard to Cu, application of such biosolids to these soils at rates of up to 250 Mg ha–1 does not pose a threat to the environment in the short to medium term.
Keywords: Copper
Soil Pollutants
Waste Disposal, Fluid
Biological Availability
Description: © ASA, CSSA, SSSA
DOI: 10.2134/jeq2005.0508
Published version:
Appears in Collections:Aurora harvest 2
Earth and Environmental Sciences publications
Environment Institute publications

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