Characterization of pellets from mixing olive pomace and olive tree pruning

Barbanera, Marco; Lascaro, Elisa; Stanzione, Vitale; Esposito, Alessandro; Altieri, Roberto; Bufacchi, Marina

doi:10.1016/j.renene.2015.11.037

Cited by 67 publications

(34 citation statements)

References 17 publications

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“…In the study on pellet from almond tree carried out by Aktas et al [20], moisture and ash values were 9.06% and 4.56%, respectively. Barbanera et al [17] obtained an ash percentage within the range of 2.5% and 3.0% for pellet from olive tree, similar to that obtained for pellet from olive tree in this study and shown in Table 2. In addition, volatile matter/fixed carbon ratio is higher for pellet from olive tree (4.9) than for pellet from almond tree (4.4) ( Table 2).…”

Section: Physicochemical Analysissupporting

confidence: 89%

“…Values for pellets from almond tree were similar to those for pellets from olive tree, although the length was slightly higher and bulk density was slightly lower (Table 1). Barbanera et al [17] also worked with pellet from olive tree whose characteristics were similar to those used in this study. The diameter was 6.1 mm, the length was 23 mm, and the bulk density was within the range of 640-650 kg·m −3 .…”

Section: Introductionmentioning

confidence: 89%

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Pellet as a Technological Nutrient within the Circular Economy Model: Comparative Analysis of Combustion Efficiency and CO and NOx Emissions for Pellets from Olive and Almond Trees

2016

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This study analyzes the operation of Biomass System (BIO System) technology for the combustion of pellets from almond and olive trees within the circular economy model. Its aims are the reduction of greenhouse gas emissions as well as waste removal and its energy use by reintroducing that waste into the production process as technological nutrient. In order to do so, combustion efficiency under optimal conditions at nominal power was analyzed. In addition, a TESTO 350-XL analyzer was employed to measure CO and NO x emissions. High combustion efficiency values were obtained, 87.7% and 86.3%, for pellets from olive tree and almond tree, respectively. The results of CO and NO x emission levels were very satisfactory. Under conditions close to nominal power, CO emission levels were 225.3 ppm at 6% O 2 for pellet from almond tree and 351.6 ppm at 6% O 2 for pellet from olive tree. Regarding NO x emissions, the values were 365.8 ppm at 6% O 2 and 333.2 ppm at 6% O 2 for pellets from almond tree and olive tree, respectively. In general, these values were below those legally established by current legislation in European countries. Therefore, BIO System technology is a perfectly feasible option in terms of energy use and circular economy.

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Section: Physicochemical Analysissupporting

confidence: 89%

Section: Introductionmentioning

confidence: 89%

Pellet as a Technological Nutrient within the Circular Economy Model: Comparative Analysis of Combustion Efficiency and CO and NOx Emissions for Pellets from Olive and Almond Trees

2016

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“…However, due to variations in the availability of sawdust, new raw materials have been used to produce biomass pellets, hindering international commercialization of pellets, among which it is possible to find agroforestry waste [16] [17], endemic timber species [18] [19], and mixtures of biomass sources [20] [21].…”

Section: Global Production and Consumption Of Pelletsmentioning

confidence: 99%

“…Additionally, 19.1% of the global energy is generated from renewable energies and the remaining 2.6% through nuclear energy [3].…”

Section: Introductionmentioning

confidence: 99%

Biomass densification: A review of the market and recent R&D trends

2017

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The growing consumption of energy and the goals established in the COP21 to diminish greenhouse gases have been bases for the development of energy industries that use renewable sources. Biomass pellets have become interesting alternatives due to their physicochemical characteristics and advantages over traditional wood. This document sought to conduct a review of the behavior of the international market, emphasizing on the principal producer and consumer countries, prices of biofuel commercialization, as well as the different research trends related to this market. The European Union has become the principal market for biomass pellets with 94% growth in the last decade, sale prices around 200 and 250 €/t and an increasing need to import these biofuels. Research has focused mainly on four big areas, like pellet quality, new materials, market analysis, and combustion characteristics of the pellets. Understanding these research trends and knowing the existing market can permit the development of the currently inexistent Colombian industry for the use of this type of biofuel Keywords: Pellets, Biomass, Market, Solid Fuels, Renewable Energy. ResumenEl creciente consumo de energía y las metas establecidas en el COP21 para la disminución de gases de efecto invernadero han sido bases para el desarrollo de industrias energéticas que emplean fuentes renovables. Los pellets de biomasa se han convertido en alternativas interesantes debido a sus características fisicoquímicas y ventajas sobre la madera tradicional. El presente documento busca realizar una revisión al comportamiento del mercado internacional haciendo énfasis en los principales países productores y consumidores, los precios de comercialización del biocombustible, así como las diferentes tendencias en investigación relacionadas con este mercado. La Unión Europea se ha consolidado como el principal mercado para pellets de biomasa con un crecimiento del 94% en la última década, precios de venta alrededor de 200-250 €/t y una cada vez mayor necesidad de importar estos biocombustibles. Las investigaciones se han enfocado principalmente en cuatro grandes áreas como calidad de pellets, nuevos materiales, análisis de mercados y características de la combustión de pellets. Entender estas tendencias de investigación y conocer el mercado existente pueden permitir el desarrollo de la industria colombiana actualmente inexistente para el aprovechamiento de este tipo de biocombustible.

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“…He categorized pellet central heating boilers and burners [5]. Recently, lots of studies related to pellet burning use mixed pellet with other solid fuel, such as coal [6], agricultural residue [7,8], bamboo [9,10] and potato pulp [11].…”

Section: Introductionmentioning

confidence: 99%

Volume and Mass Measurement of a Burning Wood Pellet by Image Processing

2017

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Wood pellets are a form of solid biomass energy and a renewable energy source. In 2015, the new and renewable energy (NRE) portion of wood pellets was 4.6% of the total primary energy in Korea. Wood pellets account for 6.2% of renewable energy consumption in Korea, the equivalent of 824,000 TOE (ton of oil equivalent, 10 million kcal). The burning phases of a wood pellet can be classified into three modes: (1) gasification; (2) flame burning and (3) charcoal burning. At each wood pellet burning mode, the volume and weight of the burning wood pellet can drastically change; these parameters are important to understand the wood pellet burning mechanism. We developed a new method for measuring the volume of a burning wood pellet that involves no contact. To measure the volume of a wood pellet, we take pictures of the wood pellet in each burning mode. The volume of a burning wood pellet can then be calculated by image processing. The difference between the calculation method using image processing and the direct measurement of a burning wood pellet in gasification mode is less than 8.8%. In gasification mode in this research, mass reduction of the wood pellet is 37% and volume reduction of the wood pellet is 7%. Whereas in charcoal burning mode, mass reduction of the wood pellet is 10% and volume reduction of the wood pellet is 41%. By measuring volume using image processing, continuous and non-interruptive volume measurements for various solid fuels are possible and can provide more detailed information for CFD (computational fluid dynamics) analysis.

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Characterization of pellets from mixing olive pomace and olive tree pruning

Cited by 67 publications

References 17 publications

Pellet as a Technological Nutrient within the Circular Economy Model: Comparative Analysis of Combustion Efficiency and CO and NOx Emissions for Pellets from Olive and Almond Trees

Pellet as a Technological Nutrient within the Circular Economy Model: Comparative Analysis of Combustion Efficiency and CO and NOx Emissions for Pellets from Olive and Almond Trees

Biomass densification: A review of the market and recent R&D trends

Volume and Mass Measurement of a Burning Wood Pellet by Image Processing

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