APS111H1 Lecture Notes - Lecture 25: Kilowatt Hour, Transport Phenomena, Bioaccumulation
11 Nov 2015
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Document Summary
Lca traces the cycle of materials and processes. Documents resources consumed, emissions released: using lca. Identify ways to minimize adverse impacts: lca history, early 1960s. Address concern about rapid depletion of fossil fuels: 1969: application expanded to include other inputs and releases to the environment: Coca-cola used lca to choose among different types of containers: 1990s cloth diapers versus disposable diapers. American paper institute disposable is preferred. National association of diaper services cloth is better. If you look at energy, disposable diapers used less energy. But from waste generation method, cloth diapers were preferable. Thus concluded that either could be better depending on the perspective. Stipulates actions that should be followed in the conduct of an acceptable lca study: goal and scope. System boundary row material acquisition, recycle, etc. Outputs solid wastes, useable products, etc. From the usage to how it is disposed. Can look at how the product is transported for the user.
