Nickel uptake from a wastewater stream produced in a metal finishing industry by combination of ion-exchange and precipitation methods

In this study, ion-exchange process was applied individually as well as in combination with the precipitation process for the removal of nickel in a wastewater stream originating from a rinse bath of aluminum parts after sealing, in the anodizing process of a metal surface treatment industry. The re...

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Bibliographic Details
Published in:Separation and purification technology 2004-11, Vol.39 (3), p.181-188
Main Authors: Papadopoulos, A., Fatta, D., Parperis, K., Mentzis, A., Haralambous, K.-J., Loizidou, M.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Clinoptilolite
Exact sciences and technology
General purification processes
Ion exchange
Metal finishing
Nickel uptake
Pollution
Wastewaters
Water treatment and pollution
Zeolites
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Summary:In this study, ion-exchange process was applied individually as well as in combination with the precipitation process for the removal of nickel in a wastewater stream originating from a rinse bath of aluminum parts after sealing, in the anodizing process of a metal surface treatment industry. The results showed that the individual application of the ion-exchange led to removal of nickel up to 74.8% while the metal uptake rates were higher in the first stage of the process. Higher reduction in nickel concentrations was obtained by using the combination of ion-exchange and precipitation processes (from 94.2 to 98.3%). The optimum conditions for the development of the process include application of the precipitation by wastewater pH adjustment in 10.5 followed by ion-exchange process, using pretreated clinoptilolite for a time period which does not exceed 2 h.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2003.10.010