Immobilization of selected heavy metals in sewage sludge by natural zeolites

P Kosobucki, M Kruk, B Buszewski - Bioresource technology, 2008 - Elsevier
Bioresource technology, 2008Elsevier
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 (eg 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
0.7–1.0 mm, 5h of shaking, zeolite/sewage sludge ratio 2/98.
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.
Elsevier
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