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Title:
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Speciatie van metalen in verontreinigde en gereinigde grond en baggerspecie: uitloogprocessen en faktoren die daarop van invloed zijn
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Author(s):
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Published by:
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Publication date:
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ECN
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1997
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ECN report number:
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Document type:
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ECN-C--96-084
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ECN publication
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Number of pages:
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Full text:
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94
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Download PDF
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Abstract:
The study on the title subject is part of the project 'Assessment of theeffect of soil remediation on the leachability of soils', performed jointly
by ECN and IWACO, and describes the study by ECN of processes and
environmental factors controlling the leaching of metals from contaminated
and treated soils and dredged sludge. The aim of this study is the
development of a model for the leaching of metals from contaminated and
treated soils/sludge. The obtained understanding of the leaching processes is
being applied in support of: (1) the development of a fast testing procedure
for determining the leachability of pollutants from contaminated and treated
soils; (2) the development of guidelines for an environmental assessment of
contaminated and treated soil on the basis contaminant leachability; and (3)
to provide recommendations for the optimization of soil remediation
strategies with respect to contaminant leachability. In this report the
pH-stat measurements and the development of the model are described. Also a
modelled description is given of the leaching in terms of specific leaching
processes. The most important leaching processes and related factors are
outlined, as well as their implications. Finally, attention is paid to the
effects of the different remediation techniques on those processes and
related factors. Recommendations are given to optimize the purification of
soils and sludge with respect to the leachability of pollutants. 18 figs., 4
tabs., 18 refs., 3 appendices
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