Modelling More Sustainable Aluminium (4 pp) |
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Authors: | Kenneth Martchek |
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Institution: | (1) Kenneth Martchek Alcoa Inc., Alcoa Corporate Center 201 Isabella Street Pittsburgh, PA 15212 USA, , , |
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Abstract: | Goal, Scope and Background This case study describes the development and utilization of a global, quantitative model of current and projected aluminium
and life cycle inventory mass flows. The model and key results were developed to be shared with global aluminium industry
technical experts, executives, and external stakeholders to better understand potential paths to more global sustainable aluminium.
Methods The model is based on annual statistical data since 1950 provided by government agencies and regional aluminum associations
and on the most recent life cycle inventory intensity data (year 2002) complied for the global industry by the International
Aluminium Institute. Modeling of future aluminium and resource flows are based on literature and industry expert projections
of future product shipment demand. The availability of recycle flows to meet these market demands are based on projected utilization,
yield, and melt loss recovery rates, post-consumer recycling rates, and anticipated future product lifetimes. The model was
developed with quantitative 'what-if' capability to determine the positive impact of enhanced recycling, lower resource intense
production, and product usage scenarios.
Results and Conclusion The model provides the first quantitative assessment of annual global aluminium and life cycle inventory flows. Results
include a quantitative estimate by major market of global aluminium product inventory, system losses, recycle rates, and selected
resource requirements and air emissions implications.
- Recommendation and Perspective. Model results and scenarios have been reviewed and shared with global aluminium technical
leaders, executives and key external stakeholders in support of the International Aluminum Institute's new voluntary global
objective to better monitor and enhance aluminium recycling and sustainable development initiative. |
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Keywords: | aluminium life cycle management global resource flows emissions and energy intensity natural resources recycling sustainability |
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