Document Detail

Environmental impact evaluation of feeds prepared from food residues using life cycle assessment.
MedLine Citation:
PMID:  17526885     Owner:  NLM     Status:  MEDLINE    
There is increasing concern about feeds prepared from food residues (FFR) from an environmental viewpoint; however, various forms of energy are consumed in the production of FFR. Environmental impacts of three scenarios were therefore investigated and compared using life cycle assessment (LCA): production of liquid FFR by sterilization with heat (LQ), production of dehydrated FFR by dehydration (DH), and disposal of food residues by incineration (IC). The functional unit was defined as 1 kg dry matter of produced feed standardized to a fixed energy content. The system boundaries included collection of food residues and production of feed from food residues. In IC, food residues are incinerated as waste, and thus the impacts of production and transportation of commercial concentrate feeds equivalent to the FFR in the other scenarios are included in the analysis. Our results suggested that the average amounts of greenhouse gas (GHG) emissions from LQ, DH, and IC were 268, 1073, and 1066 g of CO(2) equivalent, respectively. The amount of GHG emissions from LQ was remarkably small, indicating that LQ was effective for reducing the environmental impact of animal production. Although the average amount of GHG emissions from DH was nearly equal to that from IC, a large variation of GHG emissions was observed among the DH units. The energy consumption of the three scenarios followed a pattern similar to that of GHG emissions. The water consumption of the FFR-producing units was remarkably smaller than that of IC due to the large volumes of water consumed in forage crop production.
Akifumi Ogino; Hiroyuki Hirooka; Atsuo Ikeguchi; Yasuo Tanaka; Miyoko Waki; Hiroshi Yokoyama; Tomoyuki Kawashima
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-05-25
Journal Detail:
Title:  Journal of environmental quality     Volume:  36     ISSN:  0047-2425     ISO Abbreviation:  J. Environ. Qual.     Publication Date:    2007 Jul-Aug
Date Detail:
Created Date:  2007-05-28     Completed Date:  2007-10-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0330666     Medline TA:  J Environ Qual     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1061-8     Citation Subset:  IM    
National Institute of Livestock and Grassland Science, Tsukuba, Ibaraki 305-0901, Japan.
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MeSH Terms
Animal Feed / standards*
Conservation of Energy Resources*
Greenhouse Effect
Refuse Disposal / methods*
Reg. No./Substance:

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