Le ceppaie come fonte alternativa di biomassa da combustione
Pari, L.; Gallucci, F.; Picchi, G.; Spinelli, R.; Scarfone, A.; Barontini, M.
|Kind of publication:|
Compagnia delle Foreste
|Abstract in Italian:|
Nell’ottica del recupero dei residui agricoli per la produzione bioenergetica, le ceppaie residuali
potrebbero rappresentare una valida fonte di approvvigionamento. Diventa quindi necessario
individuare macchinari idonei al recupero di questi residui e quantificare le loro rese
|Abstract in English:|
Generally, the stumps removal from an end-of-life orchard
is a time consuming work that requires high management
costs. Despite these problems, the operation is necessary
for restoring suitable soil conditions for arboreal or herbaceous
This study consists of two independent parts: the first part
is focused on the comparison of the work performed by a
stumps puller prototype and a traditional excavator. The second
part of the study deal with the energetic characterization
of the extracted roots.
The goal of the work is to show the work quality of mechanization
systems for raw material supply, but at the same
time it is intended to show the stump energy potential in the
The work quality of the machines was evaluated considering
the capacity of each machine to produce material as much
free of soil as possible after the extraction. The energetic
characterization was evaluated with respect to moisture content,
gross and net calorific value, chemical composition,
and ash content.
Wood/soil ratio was slightly higher in stumps extracted with
the stump puller prototype. The energetic characterization
revealed high ash content, while the other parameters
resulted in line with those of typical energetic broadleaves.
The study highlights also the necessity of outdoor stumps
storage because immediately after extraction they still
include too much soil and moisture for efficient conversion.
Further studies should address the effect of open air storage,
so that one can balance reduced soil contamination and
moisture content with dry matter losses.