The energy production represent one of the most important human activities affecting both environmental and economical aspects. In Italy, and similarly in other countries, more than the 85% of the whole energetic demand is satisfied by the exploitation of traditional fossil fuels. In particular, more than 80% of the Italian electrical energy production, is generated by the combustion of fossil fuels, and only the 19% is produced by renewable source. For reducing all the known problems arising from this large use of fossil fuels, many different strategies have to be implemented as the increase in energy efficiency and alternative and renewable energy exploitation. Among the different renewable energy sources, the one represented by the biogas producible from the anaerobic digestion of biodegradable substrates, represent an interesting solution also for the possibility of being exploited as fuel, in quite traditional internal combustion engines. One of the main source of biodegradable substrate, produced yearly in Italy as in other EU countries, is represented by the organic fraction of Municipal Solid Waste. About 10.000.000 tons of MSW organic fraction are yearly produced in Italy, representing an energy potential of about 3.000 GWh per year of renewable electrical energy. The MSW Organic Fraction (OFMSW) arises both from the differentiate collection and from the mechanical sorting treatment of dedicated Mechanical Biological Treatment (MBT) plant, operating since many years in different Italian regions. For this reason, the existing MBT plant can represent an ideal place for the installation of OFMSW to energy systems. Furthermore, the synergy arising from the existing MBT and OFMSW to energy facility can lead to an increase in the whole waste treatment efficiency of the integrated process. Main results shows that it is possible to produce more than 80 Nm3 per each OFMSW ton, leading to the production of about 130-140 kWh/t of electrical energy, increasing also the organic load treatable by the upgraded facility. From the economical point of view, the analyzed waste to energy solution seems to be sustainable starting from an inlet rate of about 10-15 €/t.

Energetic potential of the biodegradable fraction of MSW: the analysis of an existing MBT Italian Plant

DI MARIA, Francesco;
2011

Abstract

The energy production represent one of the most important human activities affecting both environmental and economical aspects. In Italy, and similarly in other countries, more than the 85% of the whole energetic demand is satisfied by the exploitation of traditional fossil fuels. In particular, more than 80% of the Italian electrical energy production, is generated by the combustion of fossil fuels, and only the 19% is produced by renewable source. For reducing all the known problems arising from this large use of fossil fuels, many different strategies have to be implemented as the increase in energy efficiency and alternative and renewable energy exploitation. Among the different renewable energy sources, the one represented by the biogas producible from the anaerobic digestion of biodegradable substrates, represent an interesting solution also for the possibility of being exploited as fuel, in quite traditional internal combustion engines. One of the main source of biodegradable substrate, produced yearly in Italy as in other EU countries, is represented by the organic fraction of Municipal Solid Waste. About 10.000.000 tons of MSW organic fraction are yearly produced in Italy, representing an energy potential of about 3.000 GWh per year of renewable electrical energy. The MSW Organic Fraction (OFMSW) arises both from the differentiate collection and from the mechanical sorting treatment of dedicated Mechanical Biological Treatment (MBT) plant, operating since many years in different Italian regions. For this reason, the existing MBT plant can represent an ideal place for the installation of OFMSW to energy systems. Furthermore, the synergy arising from the existing MBT and OFMSW to energy facility can lead to an increase in the whole waste treatment efficiency of the integrated process. Main results shows that it is possible to produce more than 80 Nm3 per each OFMSW ton, leading to the production of about 130-140 kWh/t of electrical energy, increasing also the organic load treatable by the upgraded facility. From the economical point of view, the analyzed waste to energy solution seems to be sustainable starting from an inlet rate of about 10-15 €/t.
2011
9788890584305
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/176367
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