Improvement of Characterisation Factors in Life Cycle Impact Assessment of Ecotoxicity
1. Project title: Improvement of Characterisation Factors in Life Cycle Impact Assessment of Ecotoxicity
2. Type of project: Cogoverned
3. Number of participants: 36 organisations and 15 members
4. Scope of the project: Global
5. Period: May 2006 - May 2009
6. Specific Goals
- Development of characterisation factors for metals that reflect state of the art modelling and environmental realism.
- Review of current processes for the assessment of fate, exposure and effects of metals and metalloids in the environment. Evaluation of data requirements and availability.
- Determination of working assumptions regarding metals chemistry, speciation in receiving environments, fate processes within a multimedia environment and appropriate exposure and effects models.
- Development of a generic model structure that allows for inclusion of speciation, fate, exposure and effect.
- Adaptation and revision of coding within relevant models to accommodate metal specific needs.
- Determination and incorporation of appropriate parameter values into the revised model for the specified substances and all archetypal receiving environments.
- Perform Monte Carlo simulations to develop frequency distributions for the determination of characterisation factors for Tier1 and Tier 2 substances and the analysis of uncertainty.
- Model runs for Tier 1 and Tier 2 substances, initially based on archetypal environments and subsequently for sediments and the terrestrial receiving environment.
- Final synthesis including:
• finalising of databases and computer codes
• ensuring comparability with other LCA approaches
• production of a set of characterisation factors for Tier 1 and 2 substances in the archetypal receiving environments and for sediments and the terrestrial receiving environment
• an evaluation of uncertainties associated with the characterisation factors
• assessment of further research needs
7. Outputs until now:
- Assessed aquatic toxicity characterization factors (CFs) for Tier I metals
- Assessed CF sensitivity on environmental variables
- Opened discussion on choice of archetypal environments acute and chronic endpoints
- Developed a generic method for calculating metal CFs
8. Progress done so far: 65%
9. Leaders: Myriam Diamond, Toronto University
Publicly available documents
Presentation during the Session of the UNEP/SETAC Life Cycle Initiative, Warsaw, 27 May 2008
How can interested persons get involved in this project?