Abstract—The olive sector and in particular that of the
extraction of olive oil requires large quantities of water,
therefore obtaining olive oil generates two by-products, one
liquid (OMWW) and the other solid (pomace). The OMWW are
the aqueous phase resulting from the crushing of olives, causing
worrying environmental problems in particular that it contains
large quantities of organic compounds especially phenols
compounds which cause many environmental problems such as
water pollution. Therefore, the treatment of OMWW is very
necessary. The purpose of this work was the investigation of the
efficiency of hydroxyapatite-Sodium alginate composite for the
adsorption of phenolic compounds, which are contained in
OMMW. It showed promising results in reducing the phenol
compounds and organic matter by 60% and 64% respectively
and the reduction of Hydroxytyrosol and Tyrosol by 100% and
38% respectively, which are the most predominant polyphenols
in OMWW. For second cycle of adsorption-desorption, the
adsorbent lost slightly its adsorption capacity, reduction rate of
phenol compounds and organic matter pass from 64% and 60%
to 45% and 50% respectively.
Index Terms—Adsorption, alginate, desorption,
hydroxyapatite, phenol compounds.
Rabia Benaddi is with Laboratory of Chemical Processes and Applied
Materials (LPCMA), Polydisciplinary Faculty of Béni-Mellal University
Sultan Moulay Slimane, BP 592, 23000 Béni-Mellal, Morocco. Rabia
Benaddi is also with Laboratory of Water, Biodiversity and Climate Change
Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech,
Maroc (Corresponding author; e-mail: r.benaddi@hotmail.fr).
Abdelillah Bouriqi, Faissal Aziz, and Naaila Ouazzani are with
Laboratory of Water, Biodiversity and Climate Change Faculty of Sciences
Semlalia, Cadi Ayyad University, BP 2390, Marrakech, Morocco.
Khalifa El harfi is with Laboratory of Chemical Processes and Applied
Materials (LPCMA), Polydisciplinary Faculty of Béni-Mellal University
Sultan Moulay Slimane, BP 592, 23000 Béni-Mellal, Morocco.
Cite: Rabia Benaddi, Abdelillah Bouriqi, Faissal Aziz, Khalifa El harfi, and Naaila Ouazzani, "Treatment of Olive Mill Waste Water by Adsorption on Hydroxyapatite-Sodium Alginate Composite," International Journal of Environmental Science and Development vol. 13, no. 6, pp. 251-256, 2022.
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