| Title: |
Woody biomass phytoremediation of contaminated brownfield land
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| Resource Type: |
document --> technical publication --> journal article
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| Country: |
United Kingdom
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| Year: |
2007 |
| Availability: |
Environmental Pollution 141, 387-395
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| Author 1/Producer: |
French, C.J.
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| Other Authors/Producers: |
Dickinson N.M. and Putwain, P.D.
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| Author / Producer Type: |
University research group / research institute
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EUGRIS Keyword(s): |
Contaminated land-->Remediation options-->In situ treatment technologies
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| Short description: |
Extract: Economic and environmental regeneration of post-industrial landscapes frequently involves some element of re-afforestation or tree planting. We report field trials that evaluate whether woody biomass production is compatible with managing residual trace element contamination in brownfield soils. Large-scale mapping of contamination showed a heterogenous dispersion of metals and arsenic, and highly localised within-site hotspots. Yields of Salix, Populus and Alnus were economically viable, showing that short-rotation coppice has a potentially valuable role in community forestry. Mass balance modelling demonstrated that phytoextraction potentially could reduce contamination hotspots of more mobile elements (Cd and Zn) within a 25–30-year life cycle of the crops. Cd and Zn in stems and foliage of Salix were 4–13 times higher than EDTA-extractable soil concentrations. Lability of other trace elements (As, Pb, Cu, Ni) was not increased 3 years after planting the coppice; woody biomass may provide an effective reduction of exposure (phytostabilisation) to these less mobile contaminants.
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Submitted By:
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Professor Paul Bardos WhoDoesWhat?
Last update: 21/04/2008
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