Metallic Soaps of Ricinoleic Acid: Adsorption Isotherms and Effects of Ionic Charge
Itodo A.U1,Etim E.E2*,Mbakara I.E3
Citation :Itodo A.U,Etim E.E,Mbakara I.E, Metallic Soaps of Ricinoleic Acid: Adsorption Isotherms and Effects of Ionic Charge International Journal of Advanced Research in Chemical Science 2017,4(6) : 31-39
Hematite is the major and common metallic ore in Kogi state of Nigeria. It is readily available in large quantities and at considerably low price. In the physical standpoint, it looks porously oriented for one to crave its use as adsorbent. The purpose of this paper is to present the results of performance analysis of adsorption of derived metallic soaps of castor (ricinus) seed oil onto hematite. Different chemical ionic surfaces were created by spiking or impregnating metallic soap adsorbates with salts of K, Ba, Al, Nitrate, sulphates and phosphates respectively. This is to generate +1,+2,+3,-1,-2and -3 ionic charged surfaces. Adsorption capacity (qe) values increased linearly to an equilibration point for cationic (K+,Ba2+ and Al3+) spiked ricinus soaps adsorption.The reverse was the case observed for the anionic (NO3-, SO42-and PO43-) spiked soaps of Ricinus oil where qe at equilibration decreases with increase in ionic charge. This work further arrayed the respective isotherm constants (A, b, n, RL, Ka, BD, qe, qs, qm etc) from Langmuir isotherm, Freundlich isotherm, Temkin, BET and Dubinin Radushkevich isotherm models. Generally, this research unveiled that the role played by the effect of ionic charges and ionic concentration cannot be overemphasized.