Kinetics of the adsorption of heavy metals by clay in the activated state

Abstract Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from industrial wastewater.

In this study, we carried out the kinetics of élimination of cobalt, cadmium and manganese in solution by adsorption on clay treated by acid chloridric of the region maysour. In order to optimise the operating conditions of the adsorption process, various studies on the kinetics, capacity, weight, initial métal concentration and was conducted.

The kinetics of biosorption process was well described by the pseudo 2nd order kinetics model. It was concluded that adsorbent prepared from clay to the activated state by chemical way using the acid chloride at moderate temperature of the region may sour be utilized for the treatment of heavy metals of cobalt, cadmium and manganese in wastewater.

The thermodynamic has allowed us to deduce of the negative value of ΔS° that it is a decrease in the disorder on the interface solid/solute solution system during the adsorption process.

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Updated: April 28, 2018 — 2:19 am