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Ministry of Public Health and the Environment (1987) Royal Decree of 4 November 1987 Laying down Basic Quality Standards for Water in the Public Water System and Adapting the Royal Decree of 3 August 1976 on the General Regulation of Wastewater Discharges into Ordinary Surface Water, Public Sewers and Artificial Rainwater Drainage Channels, MB of 21.11.87.

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• 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.