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Energies 2016, 9(10), 777; doi:10.3390/en9100777

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

1
Department of Management, University of Granada, 18071 Granada, Spain
2
Department of Civil Engineering, University of Granada, 18071 Granada, Spain
3
Department of Chemistry, University of Francisco de Paula Santander, 540003 San José de Cúcuta, Colombia
*
Author to whom correspondence should be addressed.
Academic Editor: Shusheng Pang
Received: 21 July 2016 / Revised: 14 September 2016 / Accepted: 21 September 2016 / Published: 27 September 2016
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Abstract

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 NOx 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 NOx emission levels were very satisfactory. Under conditions close to nominal power, CO emission levels were 225.3 ppm at 6% O2 for pellet from almond tree and 351.6 ppm at 6% O2 for pellet from olive tree. Regarding NOx emissions, the values were 365.8 ppm at 6% O2 and 333.2 ppm at 6% O2 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. View Full-Text
Keywords: pellet; olive tree; almond tree; emission; efficiency; circular economy pellet; olive tree; almond tree; emission; efficiency; circular economy
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MDPI and ACS Style

Molina-Moreno, V.; Leyva-Díaz, J.C.; Sánchez-Molina, J. 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. Energies 2016, 9, 777.

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