Herein, carbon dioxide (CO₂) was applied to thermal treatment of real food waste to develop an environmentally benign way to dispose food waste. The food waste used in this study was collected from a food waste treatment plant. The application of CO₂ to the thermal treatment of food waste affected the amount of non-condensable gases and condensable compounds produced from the thermal process, while it did not affect the amount of solid residue. When CO₂ was supplied during the thermal treatment of food waste, less condensable compounds but more non-condensable gases such as H₂, CO, and CH₄ were generated during the thermal treatment of food waste at a range of temperatures from 400 to 700 °C. In addition to the change in product distribution, the generation of cyclic compounds was inhibited by applying CO₂ to the thermal treatment. For example, approximately 30% less ring-structured compounds (e.g., benzene derivatives) were produced from the thermal treatment at 700 °C in CO₂ condition than from the thermal treatment in inert condition. This was likely because CO₂ inhibits gas phase free radical addition and/or dehydrogenation of linear compounds. This study suggests that the application of CO₂ to thermally treating food waste would help develop a more environmentally friendly food waste treatment method.

在本文中，将二氧化碳（CO ₂）应用于真实食物垃圾的热处理，以开发对环境无害的食物垃圾处理方式。本研究中使用的食物垃圾是从食物垃圾处理厂收集的。将CO ₂应用于食物垃圾的热处理会影响热处理过程中产生的不凝性气体和可凝结化合物的量，而不会影响固体残留物的量。在食物残渣的热处理过程中提供CO ₂时，可凝结的化合物较少，但不可凝结的气体（例如H ₂，CO和CH _4）较多在400到700°C的温度范围内对食物残渣进行热处理时会产生有害气体。除了产物分布的变化之外，通过将CO ₂应用于热处理也抑制了环状化合物的产生。例如，与在惰性条件下的热处理相比，在700℃下在CO ₂条件下的热处理产生的环结构化合物（例如，苯衍生物）少约30％。这可能是因为CO ₂抑制了线性化合物的气相自由基加成和/或脱氢。这项研究表明，将CO ₂应用于食物垃圾的热处理将有助于开发一种更加环境友好的食物垃圾处理方法。