Olive Oil Mill Waste Treatment:Improving the Sustainability of the Olive Oil Industry with Anaerobic Digestion Technology

Rincón, B.; Fermoso, Fernando G.; Borja, R.

doi:10.5772/28583

Cited by 14 publications

(13 citation statements)

References 56 publications

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“…The drying and extraction of residual oil are physicochemical treatments that can change the composition of olive pomace (Roig et al, 2006). Usually, the crude olive pomace is centrifuged to extract the residual oil, followed by a drying process (400-800°C) that reduces moisture from 60-70% to 8% and extraction with solvents (hexane) (Rincón et al, 2012). Table 2 shows the physical and chemical composition of COP and EOP (on a dried weight basis).…”

Section: Effect Of Residual Oil Extraction On Physicochemical Charactmentioning

confidence: 99%

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Ultrasounds pretreatment of olive pomace to improve xylanase and cellulase production by solid-state fermentation

Leite

Salgado

Venâncio

et al. 2016

Bioresource Technology

101

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Olive mills generate a large amount of waste that can be revaluated. This work aim to improve the production lignocellulolytic enzymes by solid-state fermentation using ultrasounds pretreated olive mill wastes. The composition of olive mill wastes (crude and exhausted olive pomace) was compared and several physicochemical characteristics were significantly different. The use of both wastes in SSF was evaluated and a screening of fungi for xylanase and cellulase production was carried out. After screening, the use of exhausted olive pomace and Aspergillus niger led to the highest enzyme activities, so that they were used in the study of ultrasounds pre-treatment. The results showed that the sonication led to a 3-fold increase of xylanase activity and a decrease of cellulase activity. Moreover, the liquid fraction obtained from ultrasounds treatment was used to adjust the moisture of solid and a positive effect on xylanase (3.6-fold increase) and cellulase (1.2-fold increase) production was obtained.

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Section: Effect Of Residual Oil Extraction On Physicochemical Charactmentioning

confidence: 99%

“…This waste has around 3.5% residual oil in wet basis. In spite of the doughy consistency hinder the drying of COP, the extraction of residual oil is still applied (Rincón et al, 2012). After olive oil extraction and a drying step, the exhausted olive pomace (EOP) can be used in combustion processes.…”

Section: Introductionmentioning

confidence: 99%

Ultrasounds pretreatment of olive pomace to improve xylanase and cellulase production by solid-state fermentation

Leite

Salgado

Venâncio

et al. 2016

Bioresource Technology

101

View full text Add to dashboard Cite

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“…On the other hand, the two and three-phase systems create a pomace or SOR as well as OMW. As stated earlier and also consistent with a recent 2012 study by Rincón, Fermoso, & Borja (2012), the three-phase process generally yields 20% olive oil, 30% SOR, and 50% olivemill wastewater OMW. This equates to 80% more waste by volume being produced than actual product (p. 275).…”

Section: By-products Of the Olive Oil Industrysupporting

confidence: 89%

“…This equates to 80% more waste by volume being produced than actual product (p. 275). According to the study by Rincón et al (2012), because the two-phase system reduces or eliminates the amount of water added during processing, less OMW is produced making this option appear more ecologically friendly. However, the semi-solid waste generated by the two-phase system tends to be up to 60 percent more than those generated in the three-phase system.…”

Section: By-products Of the Olive Oil Industrymentioning

confidence: 99%

A Feasibility Analysis for the Development of a Facility Utilizing Olive Oil Mill Production Waste as a Carbon Substrate in Polyhydroxyalkanoate Production in Morocco

Hansen¹

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“…From the produced 2.2 million tons, 1.2 million tons are produced in Spain, mainly in the Andalusia region (IOOC, 2016). The two-phase olive oil extraction process is the main technology for olive oil production in this region (Rincon et al, 2012). In this manufacturing process, around 0.55 m 3 of wastewater per ton of processed olives are produced (Borja, et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

et al. 2017

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SUMMARY:Olive oil washing water derived from the two-phase manufacturing process was assessed as an electron donor in a bio-electrochemical system (BES) operating at 35 ºC. Start-up was carried out by using acetate as a substrate for the BES, reaching a potential of around +680 mV. After day 54, BES was fed with olive oil washing water. The degradation of olive oil washing water in the BES generated a maximum voltage potential of around +520 mV and a Chemical Oxygen Demand (COD) removal efficiency of 41%. However, subsequent loads produced a decrease in the COD removal, while current and power density diminished greatly. The deterioration of these parameters could be a consequence of the accumulation of recalcitrant or inhibitory compounds, such as phenols. These results demonstrated that the use of olive oil washing water as an electron donor in a BES is feasible, although it has to be further investigated in order to make it more suitable for a real application. KEYWORDS: Bio-electrochemical system; COD removal; Electricity generation; Electron donor; Olive oil washing watersRESUMEN: Idoneidad del agua de lavado de aceites de oliva como donador de electrones en un sistema alimentado por lotes bioelectroquímico. El agua de lavado del aceite de oliva procedente del proceso de elaboración en dos fases fue utilizada como donador de electrones en un Sistema Bioelectroquímico (BES) operado a 35ºC. Se realizó una etapa de arranque del sistema mediante alimentación con acetato, alcanzando un potencial de referencia de +680 mV. Tras 54 días, el sistema se alimentó con agua de lavado de aceite, generando un potencial máximo de +520 mV y una eliminación de materia del 41%, en demanda química de oxígeno. Sin embargo, cargas subsecuentes conllevaron una bajada en la eliminación de materia, mientras que la densidad de corriente y de potencia disminuyeron ostensiblemente. El empeoramiento de estos parámetros puede deberse a la acumulación de compuestos recalcitrantes o inhibidores, como fenoles. Por tanto, el uso del agua de lavado de aceite de oliva en un BES es factible, aunque es necesario llevar a cabo nuevas investigaciones que hagan más atractiva su aplicación a escala real. Citation/Cómo citar este artículo: Fermoso FG, Fernández-Rodríguez MJ, Jiménez-Rodríguez A, Serrano A, Borja R. 2017. Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system. Grasas Aceites 68 (2), e198. http://dx

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Olive Oil Mill Waste Treatment:Improving the Sustainability of the Olive Oil Industry with Anaerobic Digestion Technology

Cited by 14 publications

References 56 publications

Ultrasounds pretreatment of olive pomace to improve xylanase and cellulase production by solid-state fermentation

Ultrasounds pretreatment of olive pomace to improve xylanase and cellulase production by solid-state fermentation

A Feasibility Analysis for the Development of a Facility Utilizing Olive Oil Mill Production Waste as a Carbon Substrate in Polyhydroxyalkanoate Production in Morocco

Suitability of olive oil washing water as an electron donor in a feed batch operating bio-electrochemical system

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