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Bioresour Technol. 2008 Sep;99(13):5972-6. Epub 2007 Dec 21.

Immobilization of selected heavy metals in sewage sludge by natural zeolites.

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1
Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, NCU, 7 Gagarin Street, 87-100 ToruĊ„, Poland.

Abstract

This contribution presents the possibility of application of natural sorbent (Transcarpathian clinoptylolite (KL)) for immobilization of selected heavy metals in the sewage sludge. The influence of ion-exchange parameters (e.g. time, amount of zeolite) were discussed. Process of immobilization was performed using a static method (Batch). It was found that best possible conditions for immobilization of heavy metal ions were as follows: zeolite fraction 0.7-1.0mm, 5h of shaking, zeolite/sewage sludge ratio 2/98.

PMID:
18083511
DOI:
10.1016/j.biortech.2007.10.023
[Indexed for MEDLINE]
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