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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Micellar enhanced ultrafiltration process for the treatment of olive mill wastewater
Water Research, Volume 45, No. 15, Year 2011
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Description
Olive mill wastewater (OMW) is an important environmental pollution problem, especially in the Mediterranean, which is the main olive oil production region worldwide. Environmental impact of OMW is related to its high organic load and particularly to the phytotoxic and antibacterial action of its phenolic content. In fact, polyphenols are known as powerful antioxidants with interesting nutritional and pharmaceutical properties. In the present work, the efficiency of OMW Micellar Enhanced Ultrafiltration (MEUF) treatment for removal and concentration of polyphenols was investigated, using an anionic surfactant (Sodium Dodecyl Sulfate salt, SDS) and a hydrophobic poly(vinyldene fluoride) (PVDF) membrane. The effects of the process experimental conditions on the permeate flux were investigated, and the secondary membrane resistance created by SDS molecules was evaluated. The initial fluxes of OMW processing by MEUF using SDS were 25.7 and 44.5 l/m2 h under transmembrane pressures of 3.5 and 4.5 bar, respectively. The rejection rate of polyphenols without using any surfactant ranged from 5 to 28%, whereas, it reached 74% when SDS was used under optimum pH (pH 2). The MEUF provides a slightly colored permeate (about 88% less dark), which requires clearly less chemical oxygen demand (COD) for its oxidation (4.33% of the initial COD). These results showed that MEUF process can efficiently be applied to the treatment of OMW and for the concentration and recovery of polyphenols. © 2011 Elsevier Ltd.
Authors & Co-Authors
El-Abbassi, Abdelilah
Morocco, Marakech
Faculté Des Sciences Semlalia
Khayet, Mohamed
Spain, Madrid
Universidad Complutense de Madrid
Hafidi, Abdellatif
Morocco, Marakech
Faculté Des Sciences Semlalia
Statistics
Citations: 106
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1016/j.watres.2011.05.044
ISSN:
00431354
e-ISSN:
18792448
Research Areas
Environmental