Volume 4, Issue 1, June 2020, Page: 11-24
Synthesis of K3 [Fe (C2O4)3]-kaolin Nanocomposite and Degradation of Leachate by K3 [Fe (C2O4)3]-kaolin Nanocomposite
Osu Charles Ikenna, Department of Pure and Industrial Chemistry, University Of Port Harcourt, Port Harcourt, Nigeria
Okeacha Ezinne Grace, Department of Pure and Industrial Chemistry, University Of Port Harcourt, Port Harcourt, Nigeria
Iwuoha Godson Ndubuisi, Department of Pure and Industrial Chemistry, University Of Port Harcourt, Port Harcourt, Nigeria
Received: Dec. 21, 2019;       Accepted: Jan. 7, 2020;       Published: May 28, 2020
DOI: 10.11648/j.jcebe.20200401.12      View  223      Downloads  70
Abstract
K3 [Fe (C2O4)3]-Kaolin Nano composite was synthesized by impregnating or intercalation of K3 [Fe (C2O4)3] into kaolin. The Nano composite was used to degrade landfill leachate by oxidation/reduction of organic and inorganic substances present in the landfill leachate. Landfill leachate 1 and 3 had the highest concentration of characteristics of contaminants (COD, BOD5, TDS, TSS, Organic - N, NH3 - N, Cr, Pb and Cd) than landfill leachate 2. In landfill 1, the percentage reduction of Cd, Pb, COD, NH3-N, Cr using kaolin were 88.69, 76.32, 65.6, 46.7, and 35.56 respectively which were less than the values obtained when K3 [Fe (C2O4)3]-Kaolin Nano composite was used for the degradation of Cd, Pb, COD, NH3-N, and Cr with values 92.4, 83.5, 91.5, 92.4, and 81.00 respectively. In landfill 2 and 3, K3 [Fe (C2O4)3]-Kaolin Nano composite demonstrated higher percentage reduction than that of the unmodified kaolin. These results showed that increasing the pH and the temperature of the solution (leachate), increased the percentage reduction of the contaminants such that the optimum temperature for the reduction of the various characteristics was at 100°C while that of pH was at 10.5 beyond this value no further significance reduction was observed therefore, at the point the reaction was said to be completed. The change in enthalpy (ΔH) value of the reaction processes were all positives which denoted that the reaction process was endothermic that is, heat was absorbed into the surrounding. The correlation factor, R2 for the three leachate samples showed less proximity and high remoteness from unity which also confirmed that the reduction process of COD, Pb and Cd using kaolin impregnated with ferrioxalate was temperature dependent reaction (Walter and Geoffrey, 1992). The change in entropy of the reaction (ΔS) is highly temperature dependent too because it is positive. The values of ΔG for the three landfill leachate samples were positives.
Keywords
Nano Compound, Thermodynamics, Oxidation, Kaolin, Ferrioxalate
To cite this article
Osu Charles Ikenna, Okeacha Ezinne Grace, Iwuoha Godson Ndubuisi, Synthesis of K3 [Fe (C2O4)3]-kaolin Nanocomposite and Degradation of Leachate by K3 [Fe (C2O4)3]-kaolin Nanocomposite, Journal of Chemical, Environmental and Biological Engineering. Vol. 4, No. 1, 2020, pp. 11-24. doi: 10.11648/j.jcebe.20200401.12
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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