Abstract

Contamination of waste water has been a serious concern all over the world due to exposure to many sources of pollution without appropriate treatment system. Surfactants constitute a very important group of compounds in modern life. They are useful in a large variety of usual products like soaps, detergents for household cleaning or in pharmaceuticals and personal care products. They are also found in industrial applications, in many fields like paints, cosmetics, pharmaceuticals, agrochemicals, paper coatings, and environmental remediation [1]. This study deals with the development of raw montmorillonite as an adsorbent for the treatment of waste water, used this method to test in order to reduce pollution. The adsorption processes with clays could be a simple, selective and economic conventional physicochemical treatment alternative. Our main objective of this work was to study the adsorption of Tween 80 (surfactant) on the raw montmorillonite with different parameters. The main factors such as pH, amount sorbent, adsorbate concentration temperature and the stirring speed on the sorption of Tween 80 has been investigated in detail. The adsorbents were characterized by FTIR spectroscopic and chemical analysis. The kinetics modeling was correctly described by the pseudo-second order model and the adsorption isotherm was characterized by Freundlich model. Values DG⁰, DH° show that the adsorption process was spontaneous and endothermic. The value of ΔS ° shows that the order increases adsorbed phase.

Keywords: Montmorillonite; Tween 80; surfactant, Adsorption

Reference

[1] D. Myers, Surfactant Science and Technology, third ed., Wiley-Interscience, Hoboken, New Jersey, 2006.