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| Tekijä: | Muñoz, I. Milà i Canals, L. Clift, R. |
| Otsikko: | Consider a spherical man: a simple model to include human excretion in life cycle assessment of food products |
| Lehti: | Journal of industrial ecology
2008 : AUG, VOL. 12:4, p. 521-538 |
| Asiasana: | ecology environmental protection food life cycles waste disposals |
| Kieli: | eng |
| Tiivistelmä: | From a life cycle perspective, emissions derived from human digestion of food and subsequent excretion and yet they are many times omitted from food life cycle assessment (LCA) studies. Here, a simple model to allocate and include these emissions if LCAs of specific foodstuffs is offered. The model requires basic food composition values and calculates the mass and energy balance for carbon, water, nutrients (mainly nitrogen) and phosphorous, and other inorganic substances through different excretion paths: breathing, feces and urine. |
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