PAPER TITLE :BIOSORPTION OF MERCURY (II) IONS, CONGO RED DYE AND THEIR BINARY MIXTURES FROM AQUEOUS SOLUTION USING MANGO LEAF POWDER (MAGNIFERA INDICA) AS ADSORBENT

JOURNAL OF CHEMRESEARCH | VOLUME 1 NUMBER 2 2019

Paper Details

  • Author(s) : Adelaja O. A.
  • Abstract:

Non-pulverized biosorbent was obtained from the leaves of Mango tree (Magnifera indica).The biosorbent was characterized using Fourier Transform Infrared spectrometry to elucidate the functional groups present in the resultant powder. Experimental parameters such as pH, contact time, adsorbent dosage and initial concentration were investigated. The maximum removal efficiency of Congo red was 66.52% at pH 4, mercury was 95% at pH 8 and the binary mixture at pH 5 was 72.33%. The experimental data better fit the Langmuir isotherm model for binary mixture adsorption with a correlation coefficient, R 2 of 0.9662 while Freundlich isotherm fitted better for individual systems with R2 of 0.9265 for Congo red and 0.863 for mercury. The kinetic data from this study fitted well with the pseudo-second order model, and adsorption profiles derived based on the pseudo-second order kinetic model showed good agreement with the experimental data. This study revealed the great potential of mango leaves in effective removal of mercury, Congo red and their binary mixture from wastewater.

 

Keywords: Biosorbent, mango leaf, Congo red, binary mixture, kinetic data