Environmental Compatibility Of Renewable
Energy Plants
Author(s)
E. Brizio & G. Genon
Abstract
In Italy and many European countries energy production from biomass is
encouraged by strong economic subsidies so that biomass energy plants are
getting large diffusion. Nevertheless, it is necessary to define the environmental
compatibility as well as technological and economic issues dealing with the
emerging renewable energy scenario. This evaluation should take into account
global parameters as well as environmental impacts at regional and local scale
coming from new polluting emissions. The environmental balances regarding
new energy plants are of primary importance within very polluted areas such as
Northern Italy where air quality limits are systematically exceeded, in particular
for PM10, NO2 and ozone. The paper analyses the energetic and environmental
performances of renewable energy plants and compares them with traditional
fossil fuel energy plants. The study is focused on the anaerobic co-digestion of
manure and energy crops and the combustion of poultry manure, with reference
to ammonia, CH4 and N2O releases, as well as NOx from the energetic section.
The most important conclusion that can be drawn is that the production of
renewable energy from anaerobic digestion, can strongly increase ammonia and
NOx emissions and, in some cases, also GHG emissions could be worrying,
whereas the application of best available techniques to waste gas cleaning and
energy recovery allows positive emissive balances.
Keywords: anaerobic digestion, NOx, ammonia, environmental balances, energy
efficiency, biomass.
1 Introduction
Renewable energy plants (based on biogas produced by anaerobic digestion of
manure and energy crops, vegetable oil burned by diesel engines, wood and solid
Keywords
anaerobic digestion, NOx, ammonia, environmental balances, energy
efficiency, biomass
Related Book
Other papers in this volume
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