Trend of temperature and moisture content in stored Arundo donax L.
Pari, L.; Gallucci, F.; Scarfone, A.; Figorilli, S.; Santangelo, E., Bellacima, R., Barontini, M.
Sixth edition of the International Conference on Agricultural Development and Sustainability, Agrocentro 2014, 9 - 11 April 2014 VI Symposium of Agriculture Engineering
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Raciel Lima Orozco
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Across the Mediterranean Arundo donax L. is considered a promising species for bioenergy production. The most attractive characteristic of giant reed is the high productivity per hectare. In fact, according to climatic conditions, this perennial herbaceous plant can achieve a production of dry matter between 29 and 46 t/ha/year.
The aim of the study was to investigate alternative storage systems (on a small scale) of chopped giant reed. Specifically, common storage systems (piles) were compared with innovative solutions such as the use of plastic containers (bins), supplied or not with forced air conditioning. In addition, the study assessed how these systems have affected the yield of the final product. Each treatment was constantly monitored using probes for measuring temperatures during the entire storage period (one month). Moisture content was measured over time by periodic sampling. Results have showed differences among treatments for both trends of moisture content and internal heat development in the first 10 days. This in turn determined different physical and chemical processes during storage affecting the fuel’s yield. After 10 days the moisture content inside the bin with aeration system has fallen by 50 percentage points, while in the other two the decrease observed did not exceed 20%. In the view of preserving the Arundo biomass for producing different kind of energy, such as bio-ethanol, biogas, and fuel for combustion, this study has furnished preliminary results useful to understand which kind of storage should be adopted in relation to the final destination of the biomass