PROF. ONYARI JOHN MMARI.
Postdoc-Dental Resins, University of Connecticut , Ph.D.- Polymer Chemistry
4449004 Ext 2188, Email: jonyari@uonbi.ac.ke
4449004 Ext 2188, Email: jonyari@uonbi.ac.ke
Copper (II) sorption on a Kenyan micaceous mineral (Mica-K) was studied in the batch mode. The effects of different experimental parameters such as; initial concentration, contact time, sorbent dose, pH, particle size, agitation speed, competition and temperature on the kinetics of copper removal were studied. The sorption pattern of copper onto Mica-K followed Langmuir and Freundlich isotherms. Thermodynamic parameters for copper sorption on Mica-K were also determined. X-ray photoelectron spectroscopic (XPS) analysis of metal ion-equilibrated Mica-K, demonstrated that copper, cadmium and Zinc containing nodules existed on the surface of Mica-K.