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Bakterielle Laugung von Schwermetallen aus Baggerschlamm : Optimierung des Verfahrens im Labormaßstab
Citation Link: https://doi.org/10.15480/882.455
Other Titles
Bacterial leaching of heavy metals in dredged mud : optimization of the procedure in laboratory scale
Publikationstyp
Journal Article
Date Issued
1988
Sprache
German
Author(s)
TORE-DOI
Citation
Wasser und Boden 40 (1988), Nr. 1, S. 30-2
Heavy metals can be partly leached from contaminated dredged sludges by acid. An economic procedure is the production of acid and leaching of metals by thiobacteria. First experiments with dredged mud from the Hamburg Harbour have shown that in principle bacterial leaching is possible. In the current study the conditions for suspension leaching were optimized. The influence of solid concentration and pH value as well as the addition of sulphur and iron compounds were examined. Good results were achieved with initial pH values between 3 and 4. Additon of iron sulphate and sulphur influenced pH development positively. The procedure is not applicable for large amounts of sludge but an effective treatment may be possible for small amounts of highly contaminated dredged sludge.
Subjects
Bodenschlamm in Flüssen
Schwermetalle
Bottom deposit in rivers
heavy metals
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