Page 262 - Materials Chemistry, Second Edition

L1644_C06.fm Page 235 Monday, October 20, 2003 12:06 PM

3. Life-cycle impact assessment methods

4. Dominance analysis and spatial differentiation
Dominance analysis for media

process environmental loads

- calculate for each process the - calculate for each pollutant the
percentage of total for each percentage of total for each
impact score impact score
- apply the cut-off criteria - apply the cut-off criteria

graphical representation graphical representation

- change the cut-off criteria to get a - change the site-specific cut-off
manageable number of processes, criteria to get a manageable number
that will be assessed site specifically, of pollutants for further assessment
site-dependently or by literature data
also qualitative arguments
can be used

most relevant industrial processes
and environmental intervention

determination of processes
for further assessment
determination of pollutants
technology
site-specific and/or region for further assessment
site-dependent specified
by literature

spatial differentiation

potentials by
eco-technology matrix
accidents
FIGURE 6.13 Dominance analysis for processes and pollutants

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