Combination of Fenton oxidation and composting for the treatment of the olive solid residue and the olive mile wastewater from the olive oil industry in Cyprus

Zorpas, Antonis A.; Costa, Costa N.

doi:10.1016/j.biortech.2010.05.030

Cited by 42 publications

(40 citation statements)

References 6 publications

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“…It is estimated that some 1.8 × 10 6 t of olive oil are produced annually worldwide, where 98% of this total quantity is extracted in the Mediterranean basin [1][2][3][4] with Spain, Italy, Greece being the three leading countries. The process of oil extraction generates large seasonal and centralized quantities of olive byproducts which needs significant attention.…”

Section: Introductionmentioning

confidence: 99%

“…Two-phase systems are fully implemented in Spain and in Cyprus, while Greece, Tunisia, and Italy still use both systems, but mainly 3-phase ones [3,4]. Two phase systems generatesa paste-like waste called "alperujo" or "2-phase pomace".…”

Section: Introductionmentioning

confidence: 99%

“…The process of oil extraction generates large seasonal and centralized quantities of olive byproducts which needs significant attention. In particular, its dark colour, high organic content and toxicity due to the presence of phenolic compounds may cause significant environmental issues [3][4][5][6][7][8]. Chemical Oxidation Demand (COD) values of OMWW may reach 150 g/L while suspended solids could reach up to 190 g/L [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Olive Mill Wastewater: From a Pollutant to Green Fuels, Agricultural Water Source and Bio-Fertilizer—Part 1. The Drying Kinetics

et al. 2017

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Abstract:Olive Mill Wastewater (OMWW) treatment is considered to be one of the main challenges that Mediterranean countries face. Although several procedures and technologies are mentioned in the literature, these techniques have several disadvantages or have been limited to laboratory pilot validation without posterior industrial projection. Recently, an advanced environmental friendly strategy for the recovery of OMWW was established involving the impregnation of OMWW on dry biomasses, drying of these impregnated samples, and finally green fuels and biochar production. This established strategy revealed that the drying step is crucial for the success of the entire recovery process. Hence, two impregnated samples were prepared through OMWW impregnation on sawdust (IS) and olive mill solid waste (ISW). The drying kinetics of OMWW and impregnated samples (IS and ISW) were examined in a convective dryer (air velocity range from 0.7-1.3 m/s and the temperature from 40-60 • C). The experimental results indicated that the drying of the impregnated samples occurred twice as fast as for the OMWW sample. Such behavior was attributed to the remaining thin layer of oil on the OMWW surface Furthermore, the Henderson and Pabis model showed the suitable fit of the drying curves with a determination coefficient R 2 above 0.97. The drying rates were extracted from the mathematical models and the drying process was analyzed. The coefficient of effective diffusivity varied between 2.8 and 11.7 × 10 −10 m 2 /s. In addition, the activation energy values ranged between 28.7 and 44.9 kJ/mol. These values were in the same range as those obtained during the drying of other agrifood byproducts. The final results could be very helpful to engineers aiming to improve and optimize the OMWW drying process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Olive Mill Wastewater: From a Pollutant to Green Fuels, Agricultural Water Source and Bio-Fertilizer—Part 1. The Drying Kinetics

et al. 2017

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“…Around 6 10 6 m 3 of OMW is produced yearly worldwide, of which 98% is produced in the Mediterranean basin [2]. The disposal of OMW is a problematic issue in the countries that are active in this eld.…”

Section: Introductionmentioning

confidence: 99%

“…In the last few years, there has been a great e ort to develop new solutions to the treatment of OMW, including sedimentation [7], sand ltration [8,9], ozonation [10], membrane ltration [11][12][13], neutralization with addition of acid, advanced chemical oxidation (Fenton reaction) [2,14], adsorption by activated carbon, and aerobic and anaerobic digestions [15,16]. In an industrial scale, these technologies have drawbacks because they are too expensive to have a wide application, are ine ective in meeting stringent e uent standards, and could result in a huge amount of sludge [15,[17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Process Parameters on the Foam Fractionation Treatment of Olive Mill Wastewater

Matavos-Aramyan

Ghazi-MirSaeed²,

Saeedi-Emadi³

et al. 2016

Scientia Iranica

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Abstract. Olive Mill Wastewater (OMW) is a highly organic load waste produced by the three-phase decanter system used in the processing of olives for oil that has phytotoxic and antibacterial phenolic compounds, which help this waste to resist biological degradation. Foam fractionation has not yet been studied with regard to its potential for treatment of such wastewaters. In the present study, this technique was investigated in a simple model system. The e ects of di erent operational conditions, namely, surfactant concentration, process time, pH, and gas ow rate, were evaluated in this study. Statistical analysis of the fractional factorial design revealed that surfactant concentration, pH, and gas ow rate were the most in uential process parameters. Low surfactant concentration and pH of 3-4 were found to be advantageous in terms of good Chemical Oxygen Demand (COD) removal. More than 80% of COD was removed through a single-stage foam fractionation process. This method has proved to be a feasible technique for the OMW e uent treatment.

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Treatment of olive oil mill wastewater by a pulsed high‐voltage discharge process; process optimization and combination with Fe⁺² and H₂O₂

Kuşçu

Eke

2014

J of Chemical Tech & Biotech

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BACKGROUND: Olive oil mill wastewaters (OOMW) have caused major environmental problems because of the high organic load, high total suspended solids, high inert chemical oxygen demand (COD), low pH, a characteristic odour, its dark colour and toxicity to plants. A pulsed high-voltage discharge (PHVD) process was developed as a novel alternative to advanced oxidation processes for effective treatment of OOMW. RESULTS:The ability of a PHVD process, after acid cracking, to treat OOMW, was investigated. For a PHVD treatment time of 60 min the chemical oxygen demand (COD), total organic carbon (TOC), phenol, and colour removal efficiencies were 21, 31, 23, and 32%, respectively. Following the addition of 63 mmol L −1 H 2 O 2 , the COD, TOC, phenol, and colour removal efficiencies reached 72, 55, 74, and 82%, respectively, for the same treatment time. When 0.37 mmol L −1 Fe 2+ (but no H 2 O 2 ) was added, the COD, TOC, phenol, and colour removal efficiencies were 74, 54, 79, and 72%, respectively. CONCLUSION: PHVD can be used to effectively treat OOMW, using a combination of physical and chemical effects initiated by the electrical discharge into the water.Pilot-scale pulsed high-voltage discharge system A diagram of the PHVD system is shown in Fig. 1. A high-voltage power supply with two rotating spark-gap switches was used to generate the high-voltage pulses. A series of diodes was used to convert alternating current (AC) to direct current (DC). A high-voltage power supply provided a peak voltage in the range 0-24 kV and pulse frequency in the range 0-50 Hz. Four stainless steel 1 mm i.d. needles were inserted into the reactor, from

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Combination of Fenton oxidation and composting for the treatment of the olive solid residue and the olive mile wastewater from the olive oil industry in Cyprus

Cited by 42 publications

References 6 publications

Olive Mill Wastewater: From a Pollutant to Green Fuels, Agricultural Water Source and Bio-Fertilizer—Part 1. The Drying Kinetics

Olive Mill Wastewater: From a Pollutant to Green Fuels, Agricultural Water Source and Bio-Fertilizer—Part 1. The Drying Kinetics

Influence of the Process Parameters on the Foam Fractionation Treatment of Olive Mill Wastewater

Treatment of olive oil mill wastewater by a pulsed high‐voltage discharge process; process optimization and combination with Fe⁺² and H₂O₂

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Combination of Fenton oxidation and composting for the treatment of the olive solid residue and the olive mile wastewater from the olive oil industry in Cyprus

Cited by 42 publications

References 6 publications

Olive Mill Wastewater: From a Pollutant to Green Fuels, Agricultural Water Source and Bio-Fertilizer—Part 1. The Drying Kinetics

Olive Mill Wastewater: From a Pollutant to Green Fuels, Agricultural Water Source and Bio-Fertilizer—Part 1. The Drying Kinetics

Influence of the Process Parameters on the Foam Fractionation Treatment of Olive Mill Wastewater

Treatment of olive oil mill wastewater by a pulsed high‐voltage discharge process; process optimization and combination with Fe+2 and H2O2

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Treatment of olive oil mill wastewater by a pulsed high‐voltage discharge process; process optimization and combination with Fe⁺² and H₂O₂