1,721,191 research outputs found
Valutazione energetico-ambientale dei prodotti EuP e per la definizione dei criteri minimi di ecodesign
No full textImpianto di dissalazione multi-stage flash alimentato da vapore cogenerativo proveniente da termovalorizzazione di RSU
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Cogeneration from Thermal Treatment of Selected Selected Municipal Solid Wastes. A Stoichiometric Model Building for the Case Study on Palermo
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Refurbishment scenario to shift nearly net ZEBs towards net ZEB target: an Italian case study
No full textNew exergy criterion in the multicriteria context: a life cycle assessment of two plaster products
No full textThis paper deals with the exergy analysis (EXA) of plaster materials and ranks the environmental
burdens due to the production of such materials. The calculation of the exergy loss during the whole examined
process represents a relevant index, looking at the technology improvement of a process, as a
suitable tool in aid of the trade-off of alternative materials in the decision making. A life cycle inventory is
performed for building plaster products and the matrix method is used. The authors extend the application
of EXA to life cycle assessment, conducting an exergetic life cycle assessment, and propose an exergetic
index in the framework of multi-criteria decision making. An exergy balance, accounting for energy and
material flows, is applied to calculate the exergy losses and efficiencies for each stage of the examined
processes: resources extraction, materials processing, transport and product manufacturing. Furthermore,
exergy values are calculated for the pollutants and wastes
Energie e tecnologie sostenibili: stato dell'arte e life cycle assessment applicata a studi di settore
No full textManaging Municipal Solid Waste: Energetic and Environmetal Comparison among different options
No full textGoal. This research aims to assess the environmental effects of
integrated strategies in a municipal waste management system. In
particular, analysis is focused on a waste stream in Palermo, where
landfill involves the prompt disposal of the most waste after collection.
The current local management system is compared with
two integrated waste management alternatives. Both the options
comply with Italian regulations, but each one predicts adopting
the available technologies in different ways.
Methods and objectives. Energetic and environmental balances
are carried out in each management system referring to local
waste composition in order to quantify energy consumption,
the recovery of material and energy, and the environmental releases.
Impact assessment is carried out to define the environmental
profile of each option. Impact categories are defined and
inventory data, by means of a suitable aggregation, can be used
to evaluate the potential contribution that system inputs and
outputs could bring to the relative category.
Results. In opposition to the current management, which involves
energy balance at a loss, the mass and energy balances
outcomes in both of the two hypothetical management systems
show the capability to obtain energy and material recovery to a
substantial extent. Sorted collection plays a remarkable role in
the improvement of environmental performance of management
systems. In particular, the thermal treatment of waste associated
with energy recovery, and the concomitant material recycling,
increase the saving of energy.
Conclusions. Environmental pressure factors of the management
system are assessed depending on the relevant consumption of
raw materials and energy, and on the emission of pollutants.
The resulting figures reflect the two different integrated management
options as being sustainable solutions for achieving an
improvement in environmental performance, which is based on
increasing the value of waste, as an alternative to resources, and
the reduction of environmental releases. Life Cycle Assessment
of municipal waste management systems can be usefully applied
to define synthetic indices of environmental impact. These
indices could single out possible alternatives in multi-criteria
analysis, together with economic and technical parameters
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