健康および生態影響を考慮した都市系廃棄物由来のバイオ燃料の持続可能性評価

本研究从能源消耗、温室气体（GHG）排放、人群NO_x暴露等方面评价了污泥和厨余垃圾生物油作为天然气和重油直接燃烧燃料的环境影响和健康效应优势。针对大阪市的分析结果表明，通过在厨房垃圾收集系统中引入处理器和热解技术将生物油转化为污泥焚烧工艺，可实现约50%的温室气体减排。此外，我们发现，当混合重质燃料油以5%的生物油混合比例燃烧时，暴露于NO_x大于0.1mg/m^3的人群不会增加。

In this study, the advantages in environmental impact and health effect of bio-oil from sewage sludge and kitchen garbage, which can be used as a fuel for direct combustion with natural gasses and heavy oils, was evaluated in terms of energy consumption and greenhouse gas (GHG) emissions, and population exposure to NO_x. The results of analysis targeting Osaka City showed that about 50% of GHG emission reduction could be achieved through the introduction of disposer into kitchen garbage collection system and pyrolysis technology to produce bio-oil into sludge incineration process. In addition, we found that the population exposed to more than 0.1mg/m^3 of NO_x would not increase when the mixed heavy fuel oil would be combusted with 5% of bio-oil mixture ratio.