Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/51615
DC FieldValueLanguage
dc.contributor.authorPicchio, Rodolfoit
dc.contributor.authorVenanzi, Racheleit
dc.contributor.authorCivitarese, Vincenzoit
dc.contributor.authorBonaudo, Aurorait
dc.contributor.authorLo Monaco, Angelait
dc.contributor.authorLatterini, Francescoit
dc.date.accessioned2024-08-23T13:55:18Z-
dc.date.available2024-08-23T13:55:18Z-
dc.date.issued2024it
dc.identifier.issn1999-4907it
dc.identifier.urihttp://hdl.handle.net/2067/51615-
dc.description.abstractHigh-quality pellets are typically produced from coniferous sawdust. However, achieving comparable quality from alternative feedstocks, such as broadleaf wood, often necessitates pre-treatments or additives. Yet, within the framework of small-scale pellet production, local forest enterprises may lack the resources for such treatments and usually produce pellets from the whole trees, including branches, leaves and tops. This can have an impact on the quality of the pellets obtained in this manner. To be classified as high-quality pellets (A1 class), the specific features of the pellet must be higher or fall below the thresholds specified in the EN ISO 17225 standard. In this study, we developed an alternative statistical approach to evaluate pellet quality in comparison to the constant thresholds reported in the technical standard. We applied such an approach to evaluate the quality of pellets produced from the broadleaved species common in the Mediterranean forestry, including European beech (Fagus sylvatica L.), Turkey oak (Quercus cerris L.), Eucalyptus (clone Eucalyptus camaldulensis x C. bicostata), and Poplar clone AF6. In particular, we focused on three variables that are generally the most troublesome for the production of high-quality pellets from the broadleaved species, namely bulk density, ash content, and lower heating value. We found that the beech pellets showed satisfactory bulk density (average effect size of −1.2, with no statistical difference in comparison to the standard’s threshold) and ash content (average effect size of about −5 and significantly lower than the standard’s threshold), but the heating value was significantly lower than the threshold required by the standard (average effect size of about −3). Conversely, other investigated species exhibited notable deficiencies, with turkey oak pellets displaying acceptable heating values. We found a significant improvement in ash content and heating value with increasing stem age within the same species thus suggesting that material derived from thinning interventions might be preferable over coppice-derived biomass for high-quality pellet production. We suggest that future research on the topic should focus on investigating pellets produced from blends of beech and turkey oak biomass. We further recommend a wider application of the proposed statistical approach, considering that it is clear and easy to interpret, and allows for a statistical comparison of the obtained values against the requirements of the technical standard.it
dc.format.mediumELETTRONICOit
dc.language.isoengit
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleEnergetic Features of Hardwood Pellet Evaluated by Effect Size Summarisationit
dc.typearticle*
dc.identifier.doi10.3390/f15071259it
dc.identifier.scopus2-s2.0-85199580037it
dc.identifier.isi001277132300001it
dc.identifier.urlhttps://www.mdpi.com/1999-4907/15/7/1259it
dc.relation.journalFORESTSit
dc.relation.article1259it
dc.relation.volume15it
dc.relation.issue7it
dc.subject.scientificsectorAGR/06it
dc.subject.keywordsbroadleaf biomassit
dc.subject.keywordsfuelwoodit
dc.subject.keywordssmall-scale pellet productionit
dc.subject.ercsectorLS_9_6it
dc.description.numberofauthors6it
dc.description.internationalit
dc.contributor.countryPOLit
dc.type.refereeREF_1it
dc.type.miur262*
item.languageiso639-1en-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.openairetypearticle-
crisitem.journal.journalissn1999-4907-
crisitem.journal.anceE204152-
Appears in Collections:A1. Articolo in rivista
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