Comparison Of Kinetic Models For The Sorption Of Lead(II) Ion From Aqueous Solutions Using Unmodified And Thioglylolic Acid Modified Guinea Corn Wastes

Author(s): A.A.Abia, E.D.Asuquo, I.G.Lawal

A comparison was made on the sorption efficiency of an unmodified(UGC) and chemically modified(TGC) guinea corn waste used to remove Pb2+ from aqueous solutions. The removal efficiencies of the two adsorbents were: 71.2% and 73.3% for the UGC and TGC adsorbents respectively. Also an analysis of six kinetic models: pseudo-second order, pseudo-first order, Elovich, intraparticle diffusivity, mass transfer and intraparticle diffusion equations was also used to characterize the metal ion transport mechanism. The sorption of Pb2+ was found to best fit the pseudo-second order equation. Thereby indicating that the sorption of Pb2+ followed a second order mechanism with chemical sorption as the rate limiting step. The two adsorbents were found to be efficient in the sorption of Pb(II) ions.

Share this       
izmir escort izmir escort bursa escort antalya escort izmir escort porno porno izle türk porno eskişehir escort bartın escort burdur escort izmir escort bursa escort porno indir izle escort izmir