Removal of nickel from effluents by chelating ion exchange

• Published in: Journal of chemical technology and biotechnology (1986) Vol. 83; no. 12; pp. 1623 - 1632
• Main Authors: Ma, Anthony, Shek, T.H, Allen, S.J, Lee, V.K.C, McKay, G
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.12.2008
• Subjects: effluent; ion exchange; isotherm; kinetics; nickel; resin
• ISSN: 0268-2575; 1097-4660
• DOI: 10.1002/jctb.1995

BACKGROUND: Nickel is a highly toxic metal which is discharged into receiving waters by several industries, in particular, electroplating, PCB and electronics manufacturers. In the present study, a new ion exchanger has been assessed for its ability to remove nickel from solution.RESULTS: By comparing the SSE of different models in the nickel metal ion system, it seems that Redlich-Peterson isotherm was the best fit model for the three metal ions. But the Langmuir was of a very similar magnitude. The equilibrium sorption capacity has been determined as 2.18 mmol/g and the batch contact time studies have been analyzed and compared using three kinetic models. The rate data were best correlated using the Elovich kinetic model.CONCLUSION: The batch sorption system is a well developed system for the application in the field of water pollution collected in small scale plants. The suitability of a sorbent is determined by the cost, sorption performance and regeneration efficiency. The sorption capacity of resin for nickel metal ions was determined as 2.18 mmol/g. In order to develop a treatment system design it is also important to determine the best kinetic model, Elovich kinetic model, to describe the rate of nickel removal. Copyright