TITLE:
Modeling of Copper Adsorption by Moringa oleifera Seed Powders
AUTHORS:
Mariette Désirée Yehe, Edwige Odoh, Blaise N’guadi Allou, Patrick Grah Atheba, Joel Cyriaque Dadje, Gildas Komenan Gbassi
KEYWORDS:
Moringa oleifera, Copper, Adsorption Phenomenon
JOURNAL NAME:
Open Journal of Physical Chemistry,
Vol.11 No.4,
September
6,
2021
ABSTRACT: In this
work, an inexpensive and environmentally friendly natural adsorbent obtained
from shelled (GD) and unshelled (GND) Moringa oleifera seeds was used for copper adsorption from aqueous
solutions. A series of experiments were performed to assess the parameters
influencing the adsorption phenomenon such
as pH, adsorbent mass, adsorption equilibrium time and temperature. The kinetic results of adsorption described
a pseudo-second order model. The
adsorption isotherms are satisfactorily described by the Langmuir mathematical model. The thermodynamic data revealed a spontaneous and
endothermic adsorption phenomenon. The level of copper in surface water before and after addition of moringa powders was
carried out to verify the effectiveness of the adsorbent. A maximum adsorption
rate of 51.28% and 61.96% was obtained with GD and GND powders
respectively. Moringa oleifera seed powders are an effective alternative for the removal of copper from
surface water.