Use of natural zeolites from Maramures county (Romania) in removal of Cu2+, Pb2+, Zn2+ ions from industrial wastewaters

The use of natural zeolites in wastewaters cleaning is a highly appreciated method especially due to the natural zeolites high ion exchange capacity correlated to their relative low-cost exploitation. In order to study the influence of the solution flow with heavy metals on the adsorption of Cu2+, P...

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Bibliographic Details
Published in:Advances in environmental sciences : international journal of the Bioflux Society 2010-11, Vol.2 (2), p.181-188
Main Authors: Smical, Irina, Mihaly-Cozmuţa, Leonard, Costin, Dan
Format: Article
Language:English
Subjects:
Adsorption
Clinoptilolite zeolites
Copper
Data processing
Environmental science
Experiments
Exploitation
Heavy metals
Ions
Lead
Metal ions
Metals
Scanning electron microscopy
Spectrum analysis
Temperature
Tuff
Wastewater
Zeolites
Zinc
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Summary:The use of natural zeolites in wastewaters cleaning is a highly appreciated method especially due to the natural zeolites high ion exchange capacity correlated to their relative low-cost exploitation. In order to study the influence of the solution flow with heavy metals on the adsorption of Cu2+, Pb2+, Zn2+ ions by natural zeolite tuff an installation was performed assuring the solution passing through the zeolite tuff bed. In accordance with the analyses data, the used zeolite tuff contains a high ratio of clinoptilolite, which renders the high quality of the studied tuff. The influence of the three flows (8 BV/h, 10 BV/h and 12 BV/h) on the adsorption process was pursued and it was observed that the highest heavy metal ions retention was registered at lower solution flow. It was also noticed that the natural zeolite tuff used in the experiment had the best affinity for Pb2+ ions.
ISSN:2066-7620
2066-7647