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( Junya Yano ),( Tatsuki Aoki ),( Kazuo Nakamura ),( Kazuo Yamada ),( Shin-ichi Sakai ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
Hydrogenated biodiesel (HBD) is envisaged as a new type of diesel. Some byproducts of the HBD production process could also replace fossil fuels; therefore, increasing these substitution amounts could contribute to reducing the burden on the environment. The purpose of this study was to clarify the reduction of the environmental burden brought about by combining the HBD production from waste cooking oil with the anaerobic digestion (AD) of food waste. A life cycle assessment (LCA) was conducted, in which a combined functional unit was established, which included “the treatment of the household waste and the waste cooking oil annually generated in Kyoto city” and “running a diesel vehicle for household waste collection.” The base scenario was that all household waste and waste cooking oil were incinerated. The results indicated that compared with the base scenario, utilizing the combined HBD production system and the AD of food waste could bring about a reduction of 41.8% in the integrated environmental effects (global warming, fossil fuel consumption, acidification, and urban air pollution). The reduction of greenhouse gases compared with the base scenario was 18,100 t-CO<sub>2</sub>eq/yr. Substitutions with the byproducts of the HBD production process could reduce greenhouse gas emissions by 1,070 t-CO<sub>2</sub>eq/yr.