Leaching tests on immobilised waste from monolithic bodies Formulation, appraisal and use of radioanalysis |
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Authors: | H A Das |
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Institution: | (1) Department of Geochemistry, Faculty of Earth Sciences, Utrecht University, P. O. Box 80.021, 3508 TA, Utrecht, The Netherlands |
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Abstract: | Assessment of environmental risks of granular wastes, immobilised in monolithic bodies implies at least three independent,
preferably standardised, tests: Weight variations during drying and wetting; leaching with water or dilute acid and determination
of the available fraction of the micro-constituent involved. Their accuracy, precision and minimal turn-over time depend on
the dimensions of the test specimen and the experimental procedure. They are considered here in relation to the inevitable
underlying assumptions and the practical limitation of the turn-over time. Two standard geometries of test aliquots are considered
in detail. The use of radioanalysis in the determination of some of the characterising parameters is summarised. |
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Keywords: | |
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