-
5% dto.
Caracteristicas
- Páginas: 230
- Fecha Edición: 2007
- Edición: 15092007
- Idioma: Catalán.
- Encuadernación: Tapa blanda o Bolsillo - Con solapas.
- Peso: 0,80 kg.
-
L'onze de setembre
-
9788472460799
-
-
-
-
-
-
The current work applies the Life Cycle Assessment (LCA) method, an environmental
management tool that evaluates the potential environmental impacts of a product or process
throughout its entire life cycle, to the cement manufacture in Spain. As a result, main hotspots
such as the combustion of fossil and alternative fuels at the kiln have been identified and
assessed in detail. Moreover, various technology improvements such as Best Available
Techniques (BAT), and material and fossil fuels substitution scenarios have been implemented.
Results have revealed that changing the fossil fuels by alternative fuels derived from waste
entails significant reductions in most of the impact categories except for eutrophication. In the
same manner, to reduce the clinker content in cement diminishes most of the impacts. This
measure shows more problems than fuel substitution because it requires substituting the
clinker by secondary materials such as blast furnace slag, fly ashes and pozzolanas, at the same
time that mechanical and chemical properties of the cement must be preserved. Going further,
an exploratory analysis has been made including the CO2 capture technology in the Spanish
cement-making. Results have shown the effects of the post-combustion CO2 capture. It has
been observed that this technology is very expensive and most of the impact categories such
as human toxicity, eutrophication, freshwater ecotoxicity, acidification, photochemical ozone
formation and land use change grow by several times. The main problem is the extremely high
amount of heat required - the energy penalty - so natural gas and biomass cogeneration (CHP)
plants have been proposed as alternatives to substitute the coal-fired CHP plant.
Consequently, more research is needed to reduce costs and emissions.
El libro pertenece a los siguientes catálogos