Mon, 18 Dec 2017

Removal of Lead (II) ions from waste water using Lebanese scabiosaprolifera (Carmel Daisy) as adsorbent

Mohammad Aly Moussawi1, Wassim Rammal2, Akram Hijazi1,3*,  Hassan Rammal1, Houssein Annan1, Daoud Naoufal3

1.Doctoral School of Science and Technology, Research Platform for Environmental Science (PRASE), Lebanese University, Lebanon

2.RADIOCOM Laboratory, Lebanese University, IUT-Saida, P.O Box 813, Lebanon.

3.Laboratoire de Chimie Inorganique et Organometallique, LebaneseUniversity, Lebanon


ABSTRACT

Lebanese scabiosaprolifera(Carmel Daisy) was used to remove Pb (II) free ions from aqueous solutions. The adsorption process was found to be dependent on pH, Temperature, contact time, adsorbent dose and concentration. The maximum adsorption capacity was obtained at pH 5 after 1 hour at 25 ͦC. Langmuir and Freundlich isotherms were employed to interpret the adsorption behavior, with a better fit to Langmuir. This adsorption is a spontaneous process with applicability to pseudo second order kinetic model. It was concluded that scabiosaprolifera is an effective, low cost and environmentally friendly adsorbent.

Keywords: scabiosaprolifera, Adsorption, Isotherms, Kinetics


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