Incorporation and leaching of heavy metals in clay annealed with Pb, Cu and V

Incorporation and leaching of heavy metals in clay annealed with Pb, Cu and V

The leaching characteristics of annealed clay enriched with heavy metals (5 wt% PbO, CuO, V sub(2)O sub(5)) were compared with the mineral phase composition. X-ray powder diffraction analyses of the products at different annealing temperatures (up to 1,000 degree C) revealed that Pb is incorporated...

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Veröffentlicht in:Environmental geology (Berlin) 2001-12, Vol.41 (3-4), p.297-304
Hauptverfasser: KARIUS, Volker, BRUHNS, Petra, HAMER, Kay, FISCHER, Reinhard X
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Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Pollution, environment geology
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container_title Environmental geology (Berlin)
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creator KARIUS, Volker
BRUHNS, Petra
HAMER, Kay
FISCHER, Reinhard X
description The leaching characteristics of annealed clay enriched with heavy metals (5 wt% PbO, CuO, V sub(2)O sub(5)) were compared with the mineral phase composition. X-ray powder diffraction analyses of the products at different annealing temperatures (up to 1,000 degree C) revealed that Pb is incorporated in a lead feldspar whereas Cu and V are mainly incorporated in the amorphous component. The phases incorporating Pb, Cu or V were investigated by thermodynamic calculations to confirm consistency to the observed solubility behaviour in pH-static experiments at pH 4, 7 and 11. Mobilization data indicate that Pb and Cu are sufficiently immobilized during annealing processes whereas the high mobility of V strongly depends on the annealing temperature.
doi_str_mv 10.1007/s002540100351
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subjects Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Pollution, environment geology
title Incorporation and leaching of heavy metals in clay annealed with Pb, Cu and V
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