Evolution of organic matter and nitrogen during co-composting of olive mill wastewater with solid organic wastes

2000 ◽  
Vol 32 (3) ◽  
pp. 222-227 ◽  
Author(s):  
C. Paredes ◽  
A. Roig ◽  
M. P. Bernal ◽  
M. A. Sánchez-Monedero ◽  
J. Cegarra
Keyword(s):  
Organic Matter ◽  
Organic Wastes ◽  
Olive Mill Wastewater ◽  
Olive Mill

The fate of organic matter brought into soil by olive mill wastewater application at different seasons

2016 ◽  
Vol 17 (4) ◽  
pp. 901-916 ◽  
Author(s):  
Nisreen Tamimi ◽  
Gabriele E. Schaumann ◽  
Dörte Diehl
Keyword(s):  
Organic Matter ◽  
Olive Mill Wastewater ◽  
Different Seasons ◽  
Olive Mill

Change and spatial variability of soil organic matter humification after long-term tillage and olive mill wastewater application in arid regions

Soil Research ◽  
2020 ◽  
Vol 58 (4) ◽  
pp. 388
Author(s):  
Hadda Ben Mbarek ◽  
Kamel Gargouri ◽  
Chaker Mbadra ◽  
Rayda Chaker ◽  
Yousra Souidi ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Management Practices ◽  
Fluorescence Emission ◽  
Olive Mill Wastewater ◽  
Emission Area ◽  
Humification Degree ◽  
Uv Visible ◽  
Olive Mill

The changes of soil organic matter (SOM) humification induced by long-term combination of tillage and olive mill wastewater (OMW) application compared to natural and cultivated soil have been little investigated. This study aimed to compare effects of no cultivation with natural vegetation soil (NC), tillage (CT1) for 80 years and combination of tillage with OMW application (CT2) for 20 years on SOM humification degree. Fluorescence spectroscopy and UV-visible ratios (E4/E6 and CHA/CFA) were used to study soil humic acids (HAs). The SOM and humification distribution was determined for the whole field area using the Inverse Distance Weighting method. Results showed that SOM content, fluorescence emission area and E4/E6 and CHA/CFA ratios were higher in NC. Tillage reduced SOM amount, molecular size, aromatic condensation and humification degree as shown by the strong correlation between fluorescence area and CHA/CFA ratio in CT1 conversely to E4/E6. Contradictory results between fluorescence emission area and E4/E6 ratio found in NC and CT1 indicated that E4/E6 ratio was not a reliable indicator of SOM humification degree. The SOM amount, CHA/CFA ratio and emission fluorescence area increased conversely to E4/E6 ratio in CT2. This revealed a greatly humified organic matter and aromatic structure condensation with tillage and OMW application. Spatial distribution showed a progressive increase of SOM and CHA/CFA from north-west to south-east linked to the positive relationship between CHA/CFA ratio and SOM amount independent of soil management practices. Soil amended with OMW provided a favourable environment for the development of HAs which improved soil quality. The UV-visible ratio CHA/CFA with fluorescence emission area can be used as parameters to investigate SOM humification degree.

scholarly journals The long term effect of Olive Mill Wastewater (OMW) on organic matter humification in a semi-arid soil

Heliyon ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. e03181 ◽  
Author(s):  
Fatima Zahra El Hassani ◽  
Abdelali Fadile ◽  
Mouna Faouzi ◽  
Abdelah Zinedine ◽  
Mohamed Merzouki ◽  
...  
Keyword(s):  
Organic Matter ◽  
Olive Mill Wastewater ◽  
Term Effect ◽  
Arid Soil ◽  
Long Term Effect ◽  
Semi Arid ◽  
Olive Mill

scholarly journals Valorization of Olive Mill Wastewater in the Control of Aphis pomi De Geer 1773 (Hemiptera, Aphididae) Infesting Apple Plants in Nurseries

2021 ◽  
Author(s):  
Nahid Haouache ◽  
Soukaina El Asri ◽  
Adil Asfers ◽  
Abdelhadi Ait Houssa ◽  
Bouchra Tazi ◽  
...  
Keyword(s):  
Organic Matter ◽  
Large Scale ◽  
The Elderly ◽  
Olive Mill Wastewater ◽  
Acidic Ph ◽  
Natural Ecosystems ◽  
Aphis Pomi ◽  
Three Phase ◽  
Short Period ◽  
Olive Mill

Olive mill wastewater (OMW), are the liquid residues generated during the extraction of oil by traditional and modern three-phase type crushing units. These effluents are characterized by an acidic pH and composition rich in water, organic matter, minerals and polyphenols. In general, they are directly discharged into natural ecosystems. Their danger is linked to the enormous quantities produced in a short period between October and March. To mitigate the effects of vegetable waters on the environment, their valorization in different areas is discussed. As biopesticides, crude OMW have been shown to be very toxic to Aphis pomi; the LC50 and LC95 varied respectively from 27.17 to 45.59 and from 77.19 to 134.57 mg of OMW/L of water; they vary according to the stage of the aphid considered. The young stages of A. pomi were more sensitive than the elderly are. Therefore, the OMW can be used as a means of controlling aphids. However, before operating on a large scale, it is necessary to repeat the trials in field and assess their impact on non-target organisms and treated crops.

Screening of Commercial Catalysts for Steam Reforming of Olive Mill Wastewater

2021 ◽  
Author(s):  
Cláudio Rocha ◽  
M.A. Soria ◽  
Luís M. Madeira
Keyword(s):  
Steam Reforming ◽  
Olive Mill Wastewater ◽  
Olive Mill

scholarly journals Technoeconomic Analysis of the Recovery of Phenols from Olive Mill Wastewater through Membrane Filtration and Resin Adsorption/Desorption

2021 ◽  
Vol 13 (4) ◽  
pp. 2376
Author(s):  
Dimitris P. Zagklis ◽  
Costas S. Papageorgiou ◽  
Christakis A. Paraskeva
Keyword(s):  
Capital Investment ◽  
Membrane Filtration ◽  
Hot Spot ◽  
Treatment Method ◽  
Olive Mill Wastewater ◽  
Operational Cost ◽  
Equipment Cost ◽  
Fixed Capital Investment ◽  
Adsorption Desorption ◽  
Olive Mill

Olive mill wastewater is an important agro-industrial waste with no established treatment method. The authors have developed a phenol separation method that could potentially cover the treatment cost of the waste. The purpose of this study was to identify any economic hotspots in the process, the operational cost and examine the margin of profit for such a process. The equipment cost was scaled for different treatment capacities and then used to estimate the fixed capital investment and the yearly operational cost. The highest purchased equipment cost was identified for the membrane filtration system, while the cost for resin replacement was identified as the highest operational cost. The lifespan of the resin used in the adsorption step was identified as an economic hot spot for the process, with the phenols separation cost ranging from 0.84 to 13.6 €/g of phenols for a resin lifespan of 5–100 adsorption/desorption cycles. The lifespan of the resin proved to be the single most important aspect that determines the phenols separation cost. The price range that was calculated for the product of the process is very promising because of the typical value of antioxidants and the low concentration of phenols that are needed for food supplements and cosmetics.

Biocomposite spheres based on aluminum oxide dispersed with orange-peel powder for adsorption of phenol from batch membrane fraction of olive mill wastewater

2021 ◽  
Vol 42 ◽  
pp. 100402
Author(s):  
Jacques Romain Njimou ◽  
John Godwin ◽  
Hugues Pahimi ◽  
S. Andrada Maicaneanu ◽  
Fridolin Kouatchie-Njeutcha ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Membrane Fraction ◽  
Orange Peel ◽  
Olive Mill Wastewater ◽  
Olive Mill

scholarly journals Antioxidant Properties of Olive Mill Wastewater Polyphenolic Extracts on Human Endothelial and Vascular Smooth Muscle Cells

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 800
Author(s):  
Anna Maria Posadino ◽  
Annalisa Cossu ◽  
Roberta Giordo ◽  
Amalia Piscopo ◽  
Wael M Abdel-Rahman ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Cell Death ◽  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Olive Oil ◽  
Vascular Smooth Muscle Cells ◽  
Muscle Cells ◽  
Olive Mill Wastewater ◽  
Olive Mill

This work aims to analyze the chemical and biological evaluation of two extracts obtained by olive mill wastewater (OMW), an olive oil processing byproduct. The exploitation of OMW is becoming an important aspect of development of the sustainable olive oil industry. Here we chemically and biologically evaluated one liquid (L) and one solid (S) extract obtained by liquid–liquid extraction followed by acidic hydrolysis (LLAC). Chemical characterization of the two extracts indicated that S has higher phenol content than L. Hydroxytyrosol and tyrosol were the more abundant phenols in both OMW extracts, with hydroxytyrosol significantly higher in S as compared to L. Both extracts failed to induce cell death when challenged with endothelial cells and vascular smooth muscle cells in cell viability experiments. On the contrary, the higher extract dosages employed significantly affected cell metabolic activity, as indicated by the MTT tests. Their ability to counteract H2O2-induced oxidative stress and cell death was assessed to investigate potential antioxidant activities of the extracts. Fluorescence measurements obtained with the reactive oxygen species (ROS) probe H2DCF-DA indicated strong antioxidant activity of the two OMW extracts in both cell models, as indicated by the inhibition of H2O2-induced ROS generation and the counteraction of the oxidative-induced cell death. Our results indicate LLAC-obtained OMW extracts as a safe and useful source of valuable compounds harboring antioxidant activity.

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