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Energies 2016, 9(2), 92; doi:10.3390/en9020092

Potential Biogas Production from Artichoke Byproducts in Sardinia, Italy

1
Department of Agricultural and Food Sciences, University of Bologna, Viale Giuseppe Fanin 50, Bologna 40127, Italy
2
Department of Agricultural Sciences, University of Sassari, Viale Italia 39, Sassari 07100, Italy
3
Desertification Research Centre—NRD, University of Sassari, Viale Italia 39, Sassari 07100, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas E. Amidon
Received: 6 November 2015 / Revised: 17 December 2015 / Accepted: 26 January 2016 / Published: 2 February 2016
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Abstract

The paper aims at evaluating the potential biogas production, both in terms of CH4 and theoretical energy potential, from globe artichoke agricultural byproducts in Sardinia. Field data about the productivity of byproducts were collected on five artichoke varieties cultivated in Sardinia, to assess the biomethane production of their aboveground non-food parts (excluding the head). Moreover, secondary data from previous studies and surveys at regional scale were collected to evaluate the potential biogas production of the different districts. Fresh globe artichoke residues yielded, on average, 292.2 Nm3·tDOM−1, with dissimilarities among cultivars. Fresh samples were analyzed in two series: (a) wet basis; and (b) wet basis with catalytic enzymes application. Enzymes proved to have some beneficial effects in terms of anticipated biomethane availability. At the regional level, ab. 20 × 106 Nm3 CH4 could be produced, corresponding to the 60% of current installed capacity. However, districts potentials show some differences, depending on the specific biomass partitioning and on the productivity of cultivated varieties. Regional assessments should encompass the sensitiveness of results to agro-economic variables and the economic impacts of globe artichoke residue use in the current regional biogas sector. View Full-Text
Keywords: artichoke; byproducts; biogas; Sardinia artichoke; byproducts; biogas; Sardinia
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

De Menna, F.; Malagnino, R.A.; Vittuari, M.; Molari, G.; Seddaiu, G.; Deligios, P.A.; Solinas, S.; Ledda, L. Potential Biogas Production from Artichoke Byproducts in Sardinia, Italy. Energies 2016, 9, 92.

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