scholarly journals Treatment of Olive Mill Wastewater and the Use of Polyphenols Obtained After Treatment

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
Semih Otles ◽  
Ilknur Selek
Keyword(s):  
Membrane Filtration ◽  
Iron Oxidation ◽  
Antioxidant Properties ◽  
Olive Mill Wastewater ◽  
Treatment Methods ◽  
Ferrous Iron Oxidation ◽  
Short Period ◽  
Wide Range ◽  
Olive Oil Mills ◽  
Olive Mill

Olive mill wastes are signicant environmental problem especially in Mediterranean areas where they are generated in huge quantities in a short period of time. They are phytotoxic materials because of their high phenol, lipid and organic acid concentrations, but these wastes also contain valuable resources that could be recycled such as a large proportion of organic matter and a wide range of nutrients. The effluent from olive oil mills contains a large amount of polyphenols that have antioxidant properties. The market value of these antioxidants is high and they are commonly used in the food, cosmetics, pharmaceutics and chemical industries. For the management of olive mill wastewater (OMW) and other olive residues, various treatment methods can be used. Many scientists work on more efficient and cheaper treatment alternatives. Due to the great variety of compounds in the waste, several technologies to remove the harmful compounds for the environment should be used single or together. Some of the most used OMW treatments are drying / evaporation, forced evaporation, thermal treatment, centrifugation-ultraltration, electrocoagulation, composting, lagooning, adsorption, powdered activated carbon, filtration, sand filtration, membrane filtration, ultrafiltration, precipitation / flocculation, distillation, electrolysis, co-composting, advanced oxidation processes (AOPs) such as ozonation, hydrogen peroxide / ferrous iron oxidation (the so-called Fentons reagent). Several OMW treatment technologies have been developed aiming at the removal of the main toxic organic compounds. A lot of factors must be considered to choose the treatment methods among them the investment, required area, specic training of the workers, noise and odour emissions and seasonality of production.

scholarly journals Treatment of Olive Mill Wastewater and the Use of Polyphenols Obtained After Treatment

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
Semih Otles ◽  
Ilknur Selek
Keyword(s):  
Membrane Filtration ◽  
Iron Oxidation ◽  
Antioxidant Properties ◽  
Olive Mill Wastewater ◽  
Treatment Methods ◽  
Ferrous Iron Oxidation ◽  
Short Period ◽  
Wide Range ◽  
Olive Oil Mills ◽  
Olive Mill

Olive mill wastes are signicant environmental problem especially in Mediterranean areas where they are generated in huge quantities in a short period of time. They are phytotoxic materials because of their high phenol, lipid and organic acid concentrations, but these wastes also contain valuable resources that could be recycled such as a large proportion of organic matter and a wide range of nutrients. The effluent from olive oil mills contains a large amount of polyphenols that have antioxidant properties. The market value of these antioxidants is high and they are commonly used in the food, cosmetics, pharmaceutics and chemical industries. For the management of olive mill wastewater (OMW) and other olive residues, various treatment methods can be used. Many scientists work on more efficient and cheaper treatment alternatives. Due to the great variety of compounds in the waste, several technologies to remove the harmful compounds for the environment should be used single or together. Some of the most used OMW treatments are drying / evaporation, forced evaporation, thermal treatment, centrifugation-ultraltration, electrocoagulation, composting, lagooning, adsorption, powdered activated carbon, filtration, sand filtration, membrane filtration, ultrafiltration, precipitation / flocculation, distillation, electrolysis, co-composting, advanced oxidation processes (AOPs) such as ozonation, hydrogen peroxide / ferrous iron oxidation (the so-called Fentons reagent). Several OMW treatment technologies have been developed aiming at the removal of the main toxic organic compounds. A lot of factors must be considered to choose the treatment methods among them the investment, required area, specic training of the workers, noise and odour emissions and seasonality of production.

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.

Sustainability analysis and benchmarking of olive mill wastewater treatment methods

2013 ◽  
Vol 88 (5) ◽  
pp. 742-750 ◽  
Author(s):  
Dimitris P. Zagklis ◽  
Eleni C. Arvaniti ◽  
Vagelis G. Papadakis ◽  
Christakis A. Paraskeva
Keyword(s):  
Wastewater Treatment ◽  
Olive Mill Wastewater ◽  
Treatment Methods ◽  
Sustainability Analysis ◽  
Olive Mill

Spray drying of a phenolic-rich membrane filtration fraction of olive mill wastewater: optimisation and dried product quality

2016 ◽  
Vol 51 (8) ◽  
pp. 1900-1909 ◽  
Author(s):  
Ivana Sedej ◽  
Rebecca Milczarek ◽  
Selina C. Wang ◽  
Runqi Sheng ◽  
Roberto de Jesús Avena-Bustillos ◽  
...  
Keyword(s):  
Product Quality ◽  
Spray Drying ◽  
Membrane Filtration ◽  
Olive Mill Wastewater ◽  
Filtration Fraction ◽  
Olive Mill

scholarly journals Biodegradation of Olive Mill Wastewater by Trichosporon Cutaneum and Geotrichum Candidum

2010 ◽  
Vol 61 (4) ◽  
pp. 399-405 ◽  
Author(s):  
Tibela Dragičević ◽  
Marijana Hren ◽  
Margareta Gmajnić ◽  
Sanja Pelko ◽  
Dzoko Kungulovski ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Oxygen Demand ◽  
Geotrichum Candidum ◽  
Olive Mill Wastewater ◽  
Trichosporon Cutaneum ◽  
Aerobic Conditions ◽  
Wide Range ◽  
Dark Colour ◽  
Static Conditions ◽  
Olive Mill

Biodegradation of Olive Mill Wastewater by Trichosporon Cutaneum and Geotrichum CandidumOlive oil production generates large volumes of wastewater. These wastewaters are characterised by high chemical oxygen demand (COD), high content of microbial growth-inhibiting compounds such as phenolic compounds and tannins, and dark colour. The aim of this study was to investigate biodegradation of olive mill wastewater (OMW) by yeasts Trichosporon cutaneum and Geotrichum candidum. The yeast Trichosporon cutaneum was used because it has a high potential to biodegrade phenolic compounds and a wide range of toxic compounds. The yeast Geotrichum candidum was used to see how successful it is in biodegrading compounds that give the dark colour to the wastewater. Under aerobic conditions, Trichosporon cutaneum removed 88 % of COD and 64 % of phenolic compounds, while the dark colour remained. Geotrichum candidum grown in static conditions reduced COD and colour further by 77 % and 47 %, respectively. This investigation has shown that Trichosporon cutaneum under aerobic conditions and Geotrichum candidum under facultative anaerobic conditions could be used successfully in a two-step biodegradation process. Further investigation of OMW treatment by selected yeasts should contribute to better understanding of biodegradation and decolourisation and should include ecotoxicological evaluation of the treated OMW.

Treatment of olive-mill wastewater from a two-phase process by chemical oxidation on an industrial scale

2009 ◽  
Vol 59 (10) ◽  
pp. 2017-2027 ◽  
Author(s):  
L. M. Nieto ◽  
G. Hodaifa ◽  
S. R. Vives ◽  
J. A. G. Casares ◽  
S. B. Driss ◽  
...  
Keyword(s):  
Olive Oil ◽  
Oil Industry ◽  
Total Suspended Solid ◽  
Chemical Oxidation ◽  
Suspended Solid ◽  
Olive Mill Wastewater ◽  
Two Phase ◽  
Oil Companies ◽  
Olive Oil Mills ◽  
Olive Mill

This study offers a solution for reducing the environmental effect of wastewaters generated by the olive-oil industry. Olive-oil companies produce variable quantities of wastewaters, which require treatment for disposal or reuse. Today, regulations are becoming increasingly strict regarding the parameters measured in these effluents. In Spain, the resolution by the president of the Hydrographical Confederation of the Guadalquivir on water use 2004 set parameter limits as follows: pH = 6.0–9.0, total suspended solid = 500 mg/L; and COD and BOD520=1,500 mg O2/L. For the year 2006, maximum values for COD and BOD520 were fixed at 1,000 mg O2/L. To solve this problem, a study has been made to derive irrigation water from the above-mentioned effluents through chemical oxidation based on the Fenton's process. This would be first step towards using a closed-circuit system in olive-oil mills to treat and reuse effluents.

scholarly journals Olive Mill Wastewater Valorization in Multifunctional Biopolymer Composites for Antibacterial Packaging Application

2019 ◽  
Vol 20 (10) ◽  
pp. 2376 ◽  
Author(s):  
Laura Sisti ◽  
Grazia Totaro ◽  
Nicole Bozzi Cionci ◽  
Diana Di Gioia ◽  
Annamaria Celli ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Virgin Olive Oil ◽  
Antibacterial Properties ◽  
Morphological Characteristics ◽  
Olive Mill Wastewater ◽  
Bioactive Molecules ◽  
Scanning Calorimetry ◽  
Hybrid Filler ◽  
Wide Range ◽  
Olive Mill

Olive mill wastewater (OMW) is the aqueous waste derived from the production of virgin olive oil. OMW typically contains a wide range of phenol-type molecules, which are natural antioxidants and/or antibacterials. In order to exploit the bioactive molecules and simultaneously decrease the environmental impact of such a food waste stream, OMW has been intercalated into the host structure of ZnAl layered double hydroxide (LDH) and employed as an integrative filler for the preparation of poly(butylene succinate) (PBS) composites by in situ polymerization. From the view point of the polymer continuous phase as well as from the side of the hybrid filler, an investigation was performed in terms of molecular and morphological characteristics by gel permeation chromatography (GPC) and X-ray diffraction (XRD); also, the thermal and mechanical properties were evaluated by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic thermomechanical analysis (DMTA). Antibacterial properties have been assessed against a Gram-positive and a Gram-negative bacterium, Staphylococcus aureus and Escherichia coli, respectively, as representatives of potential agents of foodborne illnesses.

scholarly journals Fundamentals and Technoeconomical Analysis of Exploitation of Olive Mill Wastewater to Highadded Vale By-Products

2017 ◽  
pp. 216-223
Author(s):  
C.A. Paraskeva ◽  
E. C. Arvaniti ◽  
V.G. Papadakis
Keyword(s):  
Olive Oil ◽  
Membrane Filtration ◽  
Nutritive Value ◽  
Pure Water ◽  
Polyphenol Content ◽  
Mediterranean Countries ◽  
Olive Mill Wastewaters ◽  
Short Period ◽  
Western Greece ◽  
Olive Mill

The olive oil industry is very important in many Mediterranean countries, both in terms of wealth and tradition. The extraction of olive oil generates huge quantities of high organic wastewaters with toxic constituents that may have a great impact on land and water environments. Series of laboratory experiments, based on the technology of membrane filtration (Ultrafiltration and Nanofiltration and/or Reverse Osmosis), have been carried out for the fractionation of olive mill wastewaters into fractions with nutritive value, phytotoxic action and pure water. Based on these results, a pilot plant of membranes installed in an olive oil mill enterprise for an entire harvesting period and appropriate experiments were performed. The study showed that a fraction of pure water up to 75% can recovered and fractions that contained concentrate nutritious and polyphenol content can be isolated and further exploited in order to reduce the, indeed, high cost of the suggested treatment process. In this study, a techno-economic analysis for the implementation of the suggested method for the Region of Western Greece is presented. The present study took into account the fixed and the operational costs of the equipment, the costs for the infrastructure and land, the costs for the maintenance, etc., considering the treatment of 50,000 tones per harvesting period in the Region of Western Greece. The study showed that the establishment of one central treatment manufacture could reduce the uncontrolled disposal of OMW and their final discharging in the aqueous receptors. The exploitation of the nutritious content of the fractions as manure in fertilizers together with the polyphenol content that can be used as components of ecological herbicides can depreciate the total cost in a very short period of 1.5 years.

Purification of olive mill wastewater phenols through membrane filtration and resin adsorption/desorption

2015 ◽  
Vol 285 ◽  
pp. 69-76 ◽  
Author(s):  
Dimitris P. Zagklis ◽  
Aikaterini I. Vavouraki ◽  
Michael E. Kornaros ◽  
Christakis A. Paraskeva
Keyword(s):  
Membrane Filtration ◽  
Olive Mill Wastewater ◽  
Resin Adsorption ◽  
Adsorption Desorption ◽  
Olive Mill

Membrane Filtration of Olive Mill Wastewater and Exploitation of Its Fractions

2007 ◽  
Vol 79 (4) ◽  
pp. 421-429 ◽  
Author(s):  
C. A. Paraskeva ◽  
V. G. Papadakis ◽  
D. G. Kanellopoulou ◽  
P. G. Koutsoukos ◽  
K. C. Angelopoulos
Keyword(s):  
Membrane Filtration ◽  
Olive Mill Wastewater ◽  
Olive Mill
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