This report describes an investigation into the bioavailability and fate of trace metals and their subsequent impact on important soil microbiological functions such as nitrification, denitrification and methane oxidation in low and high Cu containing soils in the presence and absence of residual organic matter from sewage sludge additions made 10 years earlier. The soils being studied are part of long term sewage sludge trials and include a low Cu soil (13.3 mg Cu/kg soil, 4.18 LOI %), left un-amended to serve as a control soil, soil amended with a high Cu sewage sludge (278.3 mg Cu/kg soil, 6.52 LOI %) and soil amended with a low Cu sewage sludge (46.3 mg Cu/kg soil, 6.18 LOI %). Soil was also amended with inorganic metal salts (273.4 mg Cu/kg soil, 4.52 LOI %) to further investigate the impact of Cu in the absence of additional organic matter contained in applied sewage sludge. Data from the first two years of a project are presented which has included field-based studies at long term sewage sludge trials based in Watlington, Oxford, UK and laboratory based studies at the Institute of Grassland & Environmental Research, North Wyke, Devon, UK.
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Research Article|
March 01 2008
Impact of sewage sludge applications on the biogeochemistry of soils
D. Devaney;
1Department of Soil Science, University of Reading, Whiteknights, PO Box 217, Reading, RG6 6DW, UK
E-mail: d.devaney@rdg.ac.uk
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M. E. Hodson;
M. E. Hodson
1Department of Soil Science, University of Reading, Whiteknights, PO Box 217, Reading, RG6 6DW, UK
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A. R. Godley;
A. R. Godley
2WRc Swindon, Frankland Road, Blagrove, Swindon, Wiltshire, SN5 8YF, UK
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K. Purdy;
K. Purdy
3Department of Biological Sciences, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
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S. Yamulki
S. Yamulki
4Institute of Grassland and Environmental Science, North Wyke, Devon, EX20 2SB, UK
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Water Sci Technol (2008) 57 (4): 513–518.
Citation
D. Devaney, M. E. Hodson, A. R. Godley, K. Purdy, S. Yamulki; Impact of sewage sludge applications on the biogeochemistry of soils. Water Sci Technol 1 March 2008; 57 (4): 513–518. doi: https://doi.org/10.2166/wst.2008.006
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