Study of the removal of phenolic compounds
from olive mill waste waters by Moroccan natural clay
H. Mghafri*, A. Ouassini, S. Jeddi
Laboratoire de physico-chimie des Matériaux, Substances naturelles et Environnement (LAMSE)
Faculté des sciences et techniques Tanger 90000 B.P. 416 Maroc
Received: 02 January 2012; revised version accepted: 30 January 2012
The purpose of this research was to investigate the adsorption of total phenolic compounds, contained in olive mill wastewaters, on clay minerals. Preliminary the row clay was characterized by means of X-ray diffraction, infra-red spectrometry, X-ray Florescence, thermogravimetric analysis, and transmission electron microscopy equipped with energy dispersive X-ray spectroscopy.
Batch adsorption experiments were conducted using different amounts of clay from 1g/l to 16g/l at room temperature.
According to the results, the studied sample contains tow types of clay, kaolinite and illite in addition to some impurities, adsorption occurs according to the Langmuir model, as a monolayer.
Keywords: Olive mill waste water; Adsorption; Isotherm; Illite; Kaolinite.