Efficiency of an Ultrafiltration Process for the Depollution of Pretreated Olive Mill Wastewater
The depollution of constructed wetland-pretreated olive mill wastewater (OMW) using a membrane filtration system was experimentally studied. Dead-end filtration (DEF) was employed to evaluate suitable MF/UF membranes and select the appropriate molecular weight cut-off for optimal OMW treatment. Removal efficiencies for COD (chemical oxygen demand) and TOC (total organic carbon) using DEF reached maximum values of 88.14% and 11.17%, respectively. Adsorption of raw and pretreated OMW on granular activated carbon was also carried out for a comparative study against DEF and pretreatment. The semi-industrial-scale experiments were conducted using commercial ceramic ultrafiltration (UF) membranes (150 and 50 kDa) in cross-flow filtration (CFF) mode at a permeate flux around 200 L h<sup>-1</sup> m<sup>-2</sup> and a trans-membrane pressure (TMP) of 3.5-3.8 bars. This post-treatment had a significant impact on COD removal efficiency from pretreated OMW, reaching 78.5%. The coupled process proposed in this study achieved removal efficiencies of 97%, 97%, and 99.9% of COD, TOC, and turbidity, respectively.
Authors
- El Mostapha Lotfi (ORCID: https://orcid.org/0000-0002-6897-9126)
- Philippe Moulin (ORCID: https://orcid.org/0000-0002-9585-0571)
- Noureddine Touach (ORCID: https://orcid.org/0000-0003-2445-9150)
- M. Zine
Institutions
- Mohammed V University (MA)
- Centre National de la Recherche Scientifique (FR)
- Aix-Marseille Université (FR)
Publication Details
- Journal
- Membranes
- Published
- 2025-02-20
- DOI
- https://doi.org/10.3390/membranes15030067
- Citations
- 3
- Primary Topic
- Solar-Powered Water Purification Methods
- Type
- article
- Field-Weighted Citation Impact
- 1.09