Progrès de la recherche en sciences appliquées Libre accès

Abstrait

Kinetic modeling and equilibrium studies of selected endocrine disrupting chemicals on to low cost adsorbent

Mudi K. Yusuf and Muhammad S. Shehu

This research investigates the sorption properties of bisphenol A (BPA), 17β estradiol (E2) and 17α-ethinylestradiol (EE2) in an aquatic environment by investigating the effectiveness of using batch and continuous processes. The adsorbents used were activated carbon of 2 mm and 0.4 mm diameter with powdered poly 1-methylperrol-2- ylsquaraine (PMPs).They were applied to remove BPA, E2 and EE2 from aqueous solutions at a fixed concentration of 2 mg/l. The influence rate of agitation and dosage on EDCs removal and adsorption capacity was investigated by conducting a series of batch experiments. The adsorption equilibrium was achieved in 2 h with average percentage removal of 98.2 %( BPA) 96.5 %( E2) and 94.5 %( EE2).The kinetic adsorption process could be described by pseudo-first order model by AC1 and intra-particle kinetics by PMPs. The adsorption constants were evaluated according to Langmuir, Freundlich, Temkin and D-R isotherm models. The experimental adsorption data were fitted to Langmuir and Freundlich adsorption model but best for Langmuir (R2=0.99).