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Milena Stefanova
ENEA - Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna Research Center, Via Martiri di Monte Sole, 4, 40129 Bologna, Italy

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Journal article
Published: 31 October 2015 in Biomass and Bioenergy
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A standard ISO Life Cycle Assessment study was carried out to evaluate the environmental sustainability of electricity production from an anaerobic digestion (AD) plant using a mixture of dedicated energy crops, agricultural residues and livestock effluents as input materials. The functional unit was 1 MJ of electricity. System boundaries were from cradle to grave and covered all the phases from energy crops cultivation to the production of biogas and its use in a Combined Heat and Power plant to produce electricity. Liquid and solid digestate storage and spreading on agricultural land were included. Primary data were collected from the AD plant for all the above phases. Since heat produced is used only internally, no allocation was applied in the study. As regards digestate management, CH4 emissions were calculated from literature, whereas four literature methods were applied for calculation of nitrogen emissions with the goal to perform a sensitivity analysis on LCA results. ILCD Handbook impact assessment methodologies were used. Results show that the main hotspots are energy crops cultivation and the management of digestate, mainly because of both nitrogen and methane emissions, affecting Global Warming, Acidification, Marine and Freshwater Eutrophication. Finally, a detailed Monte Carlo analysis, was carried out to evaluate the results uncertainty. The study represents the state of the art about the environmental performance of the AD plant with the use of sensitivity and uncertainty analysis, which both improve the reliability of results, and allows drawing general conclusions on how to mitigate the environmental impacts of AD process.

ACS Style

Valentina Fantin; Antonio Giuliano; Michele Manfredi; Giuseppe Ottaviano; Milena Stefanova; Paolo Masoni. Environmental assessment of electricity generation from an Italian anaerobic digestion plant. Biomass and Bioenergy 2015, 83, 422 -435.

AMA Style

Valentina Fantin, Antonio Giuliano, Michele Manfredi, Giuseppe Ottaviano, Milena Stefanova, Paolo Masoni. Environmental assessment of electricity generation from an Italian anaerobic digestion plant. Biomass and Bioenergy. 2015; 83 ():422-435.

Chicago/Turabian Style

Valentina Fantin; Antonio Giuliano; Michele Manfredi; Giuseppe Ottaviano; Milena Stefanova; Paolo Masoni. 2015. "Environmental assessment of electricity generation from an Italian anaerobic digestion plant." Biomass and Bioenergy 83, no. : 422-435.

Journal article
Published: 20 August 2014 in Sustainability
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The framework for life cycle sustainability analysis (LCSA) developed within the project CALCAS (Co-ordination Action for innovation in Life-Cycle Analysis for Sustainability) is introducing a truly integrated approach for sustainability studies. However, it needs to be further conceptually refined and to be made operational. In particular, one of the gaps still hindering the adoption of integrated analytic tools for sustainability studies is the lack of a clear link between the goal and scope definition and the modeling phase. This paper presents an approach to structure the goal and scope phase of LCSA so as to identify the relevant mechanisms to be further detailed and analyzed in the modeling phase. The approach is illustrated with an on-going study on a new technology for the production of high purity hydrogen from biomass, to be used in automotive fuel cells.

ACS Style

Milena Stefanova; Concetta Tripepi; Alessandra Zamagni; Paolo Masoni. Goal and Scope in Life Cycle Sustainability Analysis: The Case of Hydrogen Production from Biomass. Sustainability 2014, 6, 5463 -5475.

AMA Style

Milena Stefanova, Concetta Tripepi, Alessandra Zamagni, Paolo Masoni. Goal and Scope in Life Cycle Sustainability Analysis: The Case of Hydrogen Production from Biomass. Sustainability. 2014; 6 (8):5463-5475.

Chicago/Turabian Style

Milena Stefanova; Concetta Tripepi; Alessandra Zamagni; Paolo Masoni. 2014. "Goal and Scope in Life Cycle Sustainability Analysis: The Case of Hydrogen Production from Biomass." Sustainability 6, no. 8: 5463-5475.

Journal article
Published: 28 April 2011 in Mathematical Logic Quarterly
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In this short note we show that any proof of a general spatiality theorem for inductively generated formal topologies requires full classical logic. © 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

ACS Style

Milena Stefanova; Silvio Valentini. Spatiality and classical logic. Mathematical Logic Quarterly 2011, 57, 432 -440.

AMA Style

Milena Stefanova, Silvio Valentini. Spatiality and classical logic. Mathematical Logic Quarterly. 2011; 57 (4):432-440.

Chicago/Turabian Style

Milena Stefanova; Silvio Valentini. 2011. "Spatiality and classical logic." Mathematical Logic Quarterly 57, no. 4: 432-440.