International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 2 1 2012 January 18 Liquid-Liquid Extraction and Separation of Cobalt(II) from Sodium Acetate media using Cyanex 272 75 82 EN Matini L. 1 Department of Exact Sciences, E.N.S, University Marien Ngouabi, B.P 69 Brazzaville, CONGO Tathy C. 2 Moutou J.M. 3 BaroteMaqbul A. 1 Department of Physics, Azad college, Ausa-413520, Maharashtra, INDIA YadavAbhijit A. 2 Thin Film Research Laboratory, Department of Physics, Rajarshi Shahu Mahavidyalaya, Latur-413512, Maharashtra, INDIA SurywanshiRangrao V. 3 Thin film and Solar Studies Research Lab, Dept. of Physics, Solapur University, Solapur-413 003, Maharashtra, INDIA DeshmukhLalasaheb P. 4 MasumdarElahipasha U. 5 Okonkwo S.I 1 Anambra State University Uli, Department of Chemistry, Anambra State, NIGERIA Ogbuneke R.U. 2 Alvan Ikoku Federal College of Education, Department of Chemistry, Imo State, NIGERIA Uyo B.K. 3 Federal University of Technology Owerri, Department of Chemical Engineering, Imo State, NIGERIA Deshpande S.M. 1 Post Graduate Department of Geology, Institute of Science, Caves Road, Aurangabad-431004, MH, INDIA Aher K.R. 2 Pawar M.J. 1 Laboratory of Materials Synthesis, Department of Chemistry, ACS College, Amravati, INDIA Nimbalkar V.B. 2 Medjor O.W. 1 Department of Chemistry, Taraba State University, Jalingo, NIGERIA Egharevba F. 2 Department of Chemistry, Ambrose Alli University, Ekpoma, NIGERIA Akpoveta O.V. 3 Ize-lyamu O.K. 4 Jatto E.O. 5 Mrinalini L. 1 Department of Chemistry, Manipur University, Canchipur, 795003, Imphal, INDIA Singh A.K.Manihar 2 Rao G.V. 1 Cavin Kare Research Centre, 12, Poonamalle Road, Ekkattuthangal Chennai 60032, INDIA Annamalai T. 2 Kavitha K. 3 Mukhopadhyay T. 4 Bhalla Aman 1 Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, INDIA Bari S.S. 2 Vats Sunil 3 Sharma M.L. 4 Upadhyay Rahul 1 S.S.L Jain PG College, Vidhisha, Dist. Vidhisha, MP, INDIA Pandey K. 2 J.S. Government PG College, Baitul, MP, INDIA Makhanlal Chaturvedi University, Bhopal, MP, INDIA Upadhyay S.K. 3 Bajpai Avinash 4 Nikam G.H. 1 Analytical and Environmental Research Lab, Department of Chemistry,Shivaji University, Kolhapur-416004, MH, INDIA Mohite B.S. 2 PG Department of Chemistry, Jaysingpur College, Jaysingpur, Dist.-Kolhapur, MH, INDIA > Research Paper 2011 11 29 2012 January 18 A simple liquid-liquid extraction method has been developed for the quantitative extraction of cobalt(II) from an aqueous solution of 0.5 M sodium acetate using cyanex 272 [bis (2,4,4-trimethyl phenyl) phosphinic acid] in toluene as extractant. Cobalt(II) was quantitatively back extracted from the organic phase using 3.0 M nitric acid. The effects of various parameters affecting the extraction equilibrium of cobalt(II) such as sodium acetate concentration, cyanex 272 concentration, equilibration time, effect of various diluents, diverse ions and stripping agents have been studied. The separation of cobalt(II) from various binary as well as multicomponent mixtures has been achieved depending on the difference in the extraction and stripping behavior towards these metals. The method was extended for the separation and determination of cobalt(II) from real samples. The reliability of method is assured by comparison of the results with those obtained using AAS. Copyright@ International Science Community Association