Quality of olive stone as a fuel: Influence of oil content on combustion process

Mediavilla, Irene; Barro, Ruth; Borjabad, Elena; Peña, David; Fernández, Manuel F.

doi:10.1016/j.renene.2020.07.001

Cited by 17 publications

(7 citation statements)

References 24 publications

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“…The heat of combustion of the tested olive seeds is comparable to other biological materials and was 20.64 kJ/g for green olive seeds and 20.07 kJ/g for dark olive seeds. The results obtained by Mediavilla et al [10] confirm that olive stones show good characteristics for being used as a fuel, with low ash content (0.7%) and high net calorific value (16.9 MJ/kg).…”

Section: Resultsmentioning

confidence: 77%

Application of the Calorimetric Methods to the Characteristics of Seeds from Olives

Bryś

Obranović

et al. 2020

The 1st International Electronic Conference on Food Science and Functional Foods

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The olive oil industry represents an important productive sector in the Mediterranean basin countries. Olive stone is an essential by-product generated in the olive oil extraction industries and it represents roughly 10% by weight of the olive fruit. The seeds of pickled olives are also a significant waste product. In the present study, we have investigated the possibility of the use of differential scanning calorimetry for the thermal characterization of seeds from green and black pickled olives from Croatia. The differential scanning calorimeter (DSC) with a normal pressure cell equipped with a cooling system was used to determine the thermal properties of seeds from olives. The following analyses were also performed: the determination of calorific values in a pressure bomb calorimeter, the determination of initial water content, the determination of changes of water content during drying at the temperatures of 30 °C, 50 °C and 80 °C, the determination of a percentage content of seeds mass to the mass of the whole olives, and the determination of ash content. Seeds from olives are characterized by very good parameters as a biomass. The analyzed olive seeds were characterized by low water content, low ash content, and a relatively high caloric value.

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Section: Resultsmentioning

confidence: 77%

Application of the Calorimetric Methods to the Characteristics of Seeds from Olives

Bryś

Obranović

et al. 2020

The 1st International Electronic Conference on Food Science and Functional Foods

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Section: Utilisation Of Olive Stonesmentioning

confidence: 99%

“…The removed olive stones are most commonly used in combustion not only to produce energy or heat in domestic heating systems, but also for the production of activated carbon (Bartocci et al ., 2015; Pantziaros et al ., 2020). Due to low ash content, high net calorific value and high bulk density, they are confirmed to be usable as a biofuel (Mediavilla et al ., 2020). The utilisation in domestic heating systems is widespread in the olive oil major producing regions (Berbel & Posadillo, 2018).…”

Section: Utilisation Of Olive Stonesmentioning

confidence: 99%

“…The utilisation in domestic heating systems is widespread in the olive oil major producing regions (Berbel & Posadillo, 2018). Good separation and lower fractions of pulp, skin and olive stalks have been shown to increase fuel quality (Mediavilla et al ., 2020). Olive stones also represent a promising biomass feedstock for advanced biofuels, such as ethanol, intending to find sustainable alternatives to fossil fuels.…”

Section: Utilisation Of Olive Stonesmentioning

confidence: 99%

See 1 more Smart Citation

The utilisation solutions of olive mill by‐products in the terms of sustainable olive oil production: a review

Klisović

Novoselić

Jambrak

et al. 2021

Int J of Food Sci Tech

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Despite the high economic and nutritional value as major positive aspects, olive oil production has an unfavourable side, which is the negative environmental impact caused by the generation of significant amounts of liquid and solid wastes. Therefore, the implementation of sustainable technologies to add value to the olive oil production process is a matter of great interest. This study aimed to review novel solutions dealing with the utilisation of olive oil production by-products while taking into account sustainable waste management options. The most promising technologies for the production of high-added value products from olive oil production by-products have been described with a special attention to the sustainable nonthermal technologies for the extraction of bioactive phenolic compounds, and the key findings of such investigations were reviewed. All described technologies are environmentally friendly and show great potential. Nevertheless, further researches are required to optimise and increase their applicability.

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“…The types of biomass that have potential applications in the energy sector vary depending on the region. For example, rice husks or straw [23] are typical for the countries of the Asian region, maize [24] for North America, and palm biomass [25], grape cake [26], and olive seeds [27] are typical for southern Europe countries and the Mediterranean region.…”

Section: Introductionmentioning

confidence: 99%

Justification of the Reduction Possibility of Sulfur Oxides and Fly Ash Emissions during Co-Combustion of Coal and Waste from Woodworking Enterprises

et al. 2021

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In this work, we experimentally investigated the effect of widespread biomass (woodworking waste—pine sawdust) in the composition of mixed fuel, formed also using the widespread steam coals metalignitous (D) and lean (T), on the concentration of sulfur, nitrogen and carbon oxides in flue gases. Investigations of composite fuels with a mass of at least 5 g were carried out in a reactor with continuous recording of the composition of the flue gases formed during the thermal decomposition of the investigated fuels. Thermal decomposition of fuels was carried out in the temperature range from 293 K to 873 K. It was found that an increase in the proportion of wood components in mixed fuels based on two different coals from 10% to 50% leads to a significant decrease in the concentration of sulfur oxides from 11% to 95.8% relative to the concentration of the formation of sulfur oxides in a homogeneous coal, respectively. It was found that an increase in the proportion of the wood component in the mixture with grade D coal up to 50% leads to a significant increase in the content of calcium sulfates (45.1%) and aluminum (43.2%) in the blended fuel. The increase in the content of these salts in the ash of mixed fuels based on T coal and wood is 35.1% and 38.6%, respectively. The obtained research results allowed us to conclude that woodworking wastes are an effective addition to the coals of various deposits, which would help to reduce anthropogenic-induced gas emissions when they are co-combusting in the furnaces of power boilers.

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Quality of olive stone as a fuel: Influence of oil content on combustion process

Cited by 17 publications

References 24 publications

Application of the Calorimetric Methods to the Characteristics of Seeds from Olives

Application of the Calorimetric Methods to the Characteristics of Seeds from Olives

The utilisation solutions of olive mill by‐products in the terms of sustainable olive oil production: a review

Justification of the Reduction Possibility of Sulfur Oxides and Fly Ash Emissions during Co-Combustion of Coal and Waste from Woodworking Enterprises

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