Comparison through a LCA evaluation analysis of food waste disposal options from the perspective of global warming and resource recovery

This study evaluated feed manufacturing including dry feeding and wet feeding, composting, and landfilling for food waste disposal options from the perspective of global warming and resource recovery. The method of the expanded system boundaries was employed in order to compare different by-products...

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Bibliographic Details
Published in:The Science of the total environment 2010-09, Vol.408 (19), p.3998-4006
Main Authors: Kim, Mi-Hyung, Kim, Jung-Wk
Format: Article
Language:English
Subjects:
Agriculture, rearing and food industries wastes
Air Pollutants - analysis
Applied sciences
Boundaries
Byproducts
Carbon Dioxide - analysis
Composting
Conservation of Natural Resources
Drying
Environmental impacts
Exact sciences and technology
Feeding
Food waste management
Foods
Garbage
Global Warming
Global warming potential
Life cycle assessment
Methane - analysis
Pollution
Resource recovery
Waste disposal
Waste Management - methods
Wastes
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Summary:This study evaluated feed manufacturing including dry feeding and wet feeding, composting, and landfilling for food waste disposal options from the perspective of global warming and resource recovery. The method of the expanded system boundaries was employed in order to compare different by-products. The whole stages of disposal involved in the systems such as separate discharge, collection, transportation, treatment, and final disposal, were included in the system boundary and evaluated. The Global Warming Potential generated from 1 tonne of food wastes for each disposal system was analyzed by the life cycle assessment method. The results showed that 200 kg of CO 2-eq could be produced from dry feeding process, 61 kg of CO 2-eq from wet feeding process, 123 kg of CO 2-eq from composting process, and 1010 kg of CO 2-eq from landfilling. Feed manufacturing and composting, the common treatment methods currently employed, have been known to be environment friendlier than other methods. However, this study shows that they can negatively affect the environment if their by-products are not appropriately utilized as intended.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2010.04.049