This article deals with the analytic rating of the economic investment in an energy recovery plant of a dump, in relation to the estimate of its capability to extract the biogas producing, its transformation, its sale and the Green Certificates. The presented approach, applied to the garbage dump di Mariana Mantovana (MN), consists in the esteem of potential sceneries of biogas flare coming from its production forecasts, according to different models: the LandGEM Model by U.S. EPA and stechiometric model describing the degradation of the organic fraction. These sceneries allowed to estimate the annual quantity of electrical energy, which could be produced by engines installed in the landfill. Then, the analysis of the investment for the installation of the recovering energy plant developed. The obtained results show an increase of the biogas flare during the whole 2005 (forecasts reveal that the max. value of biogas extraction could be more than 2.000.000 Nm3). However, a decreasing trend is expected to develop in the coming 20 years. The electric energy production estimated in the space of 16 years results more than 3.500.000 kWh/year. The economic assessments have recorded positive trends pointing out the advantages of this investment.
Technical-economical aspect about biogas production of Mariana Mantovana landfill (Italy) / Bertolini, M.; Bergonzoni, M.; Bevilacqua, M.; Trazzi, S.. - (2004). (Intervento presentato al convegno ISWA World Environment Congress and Exhibition nel 17-21 October 2004).