Qualitative Characterization of the Pellet Obtained from Hazelnut and Olive Tree Pruning

Andrea Acampora, Vincenzo Civitarese, Giulio Sperandio and Negar Rezaei
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Andrea Acampora: Consiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA)—Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari (CREA-IT)—Via della Pascolare 16, 00015 Monterotondo (Rome), LZ, Italy
Vincenzo Civitarese: Consiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA)—Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari (CREA-IT)—Via della Pascolare 16, 00015 Monterotondo (Rome), LZ, Italy
Giulio Sperandio: Consiglio per la Ricerca in Agricoltura e L’analisi Dell’economia Agraria (CREA)—Centro di Ricerca Ingegneria e Trasformazioni Agroalimentari (CREA-IT)—Via della Pascolare 16, 00015 Monterotondo (Rome), LZ, Italy
Negar Rezaei: National Research Council of Italy Research Institute on Terrestrial Ecosystems (IRET), Viale Guglielmo Marconi, 2, 05010 Porano, TR, Italy

Energies, 2021, vol. 14, issue 14, 1-15

Abstract: Biomass occupies a very important place among renewable energy sources, and the residual biomass recovery chain represents a sector of fundamental importance. Our work focused on the production of pellets by pruning residues from two of the most important woody crops in Italy: hazelnut and olive groves. We found a higher value of bulk density for the hazelnut pellet (581.30 kg m −3 vs. 562.38 kg m −3 ) and a higher value of length for the olive pellet (16.66 mm vs. 10.47 mm). The percentages of durability were very similar (98%). The low heating value and ash content of hazelnut and olive were 17.21 MJ kg −1 and 3.1%, and 16.83 MJ kg −1 and 2.5%. A higher concentration of Cu, Pb, and Ni was observed in the hazelnut. The contrary was observed for the concentration of Zn. N content was 0.77% and 1.24% for the hazelnut and the olive, respectively. The concentration of S was 0.00% for both. The quality parameters that do not meet current standards could be improved by mixing these materials with different types of wood.

Keywords: hazelnut grove; olive grove; pruning residues; energy chain; pellet (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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