2-IE-16-Jan-08-web

2-IE-16-Jan-08-web - Life Cycle Assessment Industrial...

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Industrial Ecology – Winter 2008 – Session 2 – January 16 Life Cycle Assessment
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Industrial Ecology – Winter 2008 – Session 2 – January 16 5.3 3.6 8.5 Material production -0.5 -0.3 -3.6 Container recycling 2) 0.5 0.1 0.1 Use & distribution 1) 1.3 0.7 0.4 Container manufacturing 6.6 Glass 4.1 PET 5.4 Aluminum Total energy Beverage container 1) Based on 500 km transportation 2) Based on current recycling rates Environmental impact indicator: Primary energy requirements (in MJ/liter) Question: For which aluminum recycling rate do aluminum can and PET bottle have the same primary energy requirements? 1 . 4 0402 . 0 ) 8 . 25 5 . 211 ( 95 . 0 1 . 0 4 . 0 5 . 8 = - - + + x 69 . 0 092 . 7 1 . 4 9 = - = x x Material choice for beverage containers Material choice for beverage containers (for teaching purposes only) (for teaching purposes only)
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Industrial Ecology – Winter 2008 – Session 2 – January 16 Conclusion: Products create environmental impacts at all stages of their life cycles → It is important to consider the entire life cycle of products Question: How do we know that primary energy requirements is the right environmental impact indicator? Material choice for beverage containers Material choice for beverage containers (for teaching purposes only) (for teaching purposes only)
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Industrial Ecology – Winter 2008 – Session 2 – January 16 0.35 0.33 4.98 Glass 0.52 0.15 3.42 PET 1.13 0.52 6.74 Aluminum TETP (g DCBeq) GWP (kg CO2eq) Energy (MJ NCV) 0.05 0.09 1.25 Glass 0.03 0.05 0.68 PET 0.02 0.03 0.41 Aluminum TETP (g DCBeq) GWP (kg CO2eq) Energy (MJ NCV) Container Forming Material Production Data source: All values derived using GaBi4 life cycle inventory data Material choice for beverage containers Material choice for beverage containers (for teaching purposes only) (for teaching purposes only)
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Industrial Ecology – Winter 2008 – Session 2 – January 16 0.034 0.046 0.65 Glass 0.003 0.005 0.07 PET 0.003 0.004 0.06 Aluminum TETP (g DCBeq) GWP (kg CO2eq) Energy (MJ NCV) -0.004 -0.04 -0.35 Glass 0 0 -0.23 PET -0.08 -0.20 -2.55 Aluminum TETP (g DCBeq) GWP (kg CO2eq) Energy (MJ NCV) Container Recycling Container Transportation Data source: All values derived using GaBi4 life cycle inventory data Material choice for beverage containers Material choice for beverage containers (for teaching purposes only) (for teaching purposes only)
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Industrial Ecology – Winter 2008 – Session 2 – January 16 Results: 0.430 0.426 6.88 Glass 0.553 0.205 3.94 PET 1.073 0.354 4.66 Aluminum TETP (g DCBeq) GWP (kg CO2eq) Energy (MJ NCV) Conclusion: Products create different types of environmental impacts → It is important to consider a wide range of environmental impacts Material choice for beverage containers Material choice for beverage containers (for teaching purposes only) (for teaching purposes only)
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Industrial Ecology – Winter 2008 – Session 2 – January 16 What is a Product Life Cycle? What is a Product Life Cycle? Raw materials mining Primary materials production Component manufacture Product assembly & distribution Product use & maintenance Product disposal Service Supply Chain Product Life Cycle The boxes are process groups called life cycle stages (system components).
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