The present paper focuses on a largely unexplored field of landfill-site valorization in combination with the construction and operation of a centralized olive mill wastewater (OMW) treatment facility. The latter consists of a wastewater storage lagoon, a compact anaerobic digester operated all year round and a landfill-based final disposal system. Key elements for process design, such as wastewater pre-treatment, application method and rate, and the potential effects on leachate quantity and quality, are discussed based on a comprehensive literature review. Furthermore, a case-study for eight (8) olive mill enterprises generating 8700 m(3) of wastewater per year, was conceptually designed in order to calculate the capital and operational costs of the facility (transportation, storage, treatment, final disposal). The proposed facility was found to be economically self-sufficient, as long as the transportation costs of the OMW were maintained at ≤4.0 €/m(3). Despite that EU Landfill Directive prohibits wastewater disposal to landfills, controlled application, based on appropriately designed pre-treatment system and specific loading rates, may provide improved landfill stabilization and a sustainable (environmentally and economically) solution for effluents generated by numerous small- and medium-size olive mill enterprises dispersed in the Mediterranean region.
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http://dx.doi.org/10.1016/j.jenvman.2013.05.051 | DOI Listing |
Plants (Basel)
January 2025
Department of Food Science and Nutrition, University of Thessaly, Terma N. Temponera Str., 43100 Karditsa, Greece.
The members of the genus Mill. are notable for producing a diverse range of structurally intricate secondary metabolites, being the focus of current phytochemical research. Their importance is recognized as several species hold significant ethnopharmacological value, being traditionally used to address ailments in human systems, such as respiratory, gastrointestinal, and urinary conditions, among others.
View Article and Find Full Text PDFBioresour Technol
January 2025
Water Science and Technology Group (WaSTe), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy. Electronic address:
In this work, the effect of the electro-assisted Fenton (EAF) process on the bacterial community of a moving bed biofilm reactor (MBBR) for olive mill wastewater (OMW) co-treatment with urban wastewater (UWW) was investigated. According to metagenomic analysis, pre-treatment by EAF, while removing total phenols (TPHs) up to 84 % ± 3 % and improving biodegradability of OMW from 0.38 to 0.
View Article and Find Full Text PDFFood Chem (Oxf)
June 2025
Dept. of Biomedical and Biotechnological Sciences, University of Catania.
In the last few years, many efforts have been devoted to the recovery and valorization of olive oil by-products because of their potentially high biological value. The olive mill wastewater (OMWW), a dark-green brown colored liquid that mainly consists of fruit vegetation water, is particularly exploited in this regard for its great content in phenolic compounds with strong antioxidant properties. In our previous work, we produced different OMWW fractions enriched in hydroxytyrosol- and hydroxytyrosol/oleuropein (i.
View Article and Find Full Text PDFAntioxidants (Basel)
December 2024
Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D'Alcontres 31, 98166 Messina, Italy.
Nonsteroidal anti-inflammatory drugs (NSAIDs) can induce serious adverse effects in gastrointestinal (GI) mucosa, increasing intestinal permeability and leading to mitochondrial dysfunction, oxidative stress, apoptosis and inflammation. As proton pump inhibitors are effective in protecting against NSAID-induced gastropathy but not NSAID-induced enteropathy, current research is focused on natural products as protective substances for therapy and prevention of intestinal injury. Herein, through the use of an in vitro model based on intestinal epithelial cell (Caco-2) damage caused by indomethacin (INDO), we examined the protective activity of a commercially available standardized extract (OFI+OE) from (L.
View Article and Find Full Text PDFChem Biodivers
January 2025
Laboratory of Physiopathology, Food and Biomolecules (PAB) of the High Institute of Biotechnology, Sidi Thabet (ISBST), Univ Manouba (UMA), BiotechPole Sidi Thabet, Sidi Thabet, Tunisia.
Olive mill wastewater (OMWW), a byproduct of olive oil extraction, constitutes a natural resource of phenolic compounds. Hydroxytyrosol (HT), the predominant compound, was reported to have antioxidant, anti-inflammatory, and neuroprotective effects. This research aims to evaluate the effect of OMWW bioproduct rich in HT on retinal glial function, glutamate metabolism, and synaptic transmission alterations mediated by hyperglycemia and dyslipidemia in high-calorie diet (HCD)-induced diabetic retinopathy (DR) in Psammomys obesus.
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