Journal of Minerals and Materials Characterization and Engineering

Volume 1, Issue 3 (May 2013)

ISSN Print: 2327-4077   ISSN Online: 2327-4085

Google-based Impact Factor: 1.73  Citations  

Studies on Extraction Behaviour of Cobalt(II) with Nitrobenzoylprazolone-5

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DOI: 10.4236/jmmce.2013.13017    3,913 Downloads   5,063 Views   Citations

ABSTRACT

The extraction of Cobalt(II) from aqueous solution using 1-phenyl-3-methyl-4-(p-nitrobenzoyl)pyrazolone (HPMNP) in various organic solvents was studied as a function of pH and extractant concentration. Extraction into organic chloroform phase was more efficient than with any other solvent. The extraction equilibrium constant was found to be log Kex= -7.04. Optimum conditions for extraction of Co(II) exist at pH of between 5.5 and 7.0, ionic strength of 0.3 Mand constant extractant concentration of 0.02 M. Shaking the organic Co(II) chelate complex with 0.2 Macid strips the Co(II) ions into the aqueous phase. It was established that Co(II) complex extracted is of composition, Co(PMNP)2.

Cite this paper

O. Gerald, A. Judith and O. Martin, "Studies on Extraction Behaviour of Cobalt(II) with Nitrobenzoylprazolone-5," Journal of Minerals and Materials Characterization and Engineering, Vol. 1 No. 3, 2013, pp. 90-94. doi: 10.4236/jmmce.2013.13017.

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