Evaluation on Odor Intensity and Quality from Plastics Waste in pre-combustion condition

累积的塑料垃圾会产生自燃。在大规模自燃过程中，从外部很难注意到指示积聚的塑料废物内部开始燃烧的微小迹象。利用塑料废弃物在炉内进行自燃模拟实验，测量了塑料废弃物自燃过程中温度的变化、恶臭气体的浓度和质量。以多种单一塑料薄膜的混合物组成的塑料废弃物作为模型塑料废弃物，对其进行高温环境试验。测量由该模型塑料废物产生的气味和由每种单一塑料产生的气味。结果发现，在废物作为单一样品的情况下，气味强度增加，并且在气味质量方面，由于热积累，在点火过程中醛/氨的相似指数的比率增加。此外，当使用TG-DTA在空气和氮气条件下燃烧每种单独塑料的废弃物时，气味也显示出与作为单一样品的混合物在实验中获得的气味类似的趋势。

Accumulated plastic waste can generate spontaneous combustion. During spontaneous combustion proceeds in a large scale, it is externally difficult to notice the minor signs indicating the start of combustion inside the accumulated plastic waste. Spontaneous combustion was simulated in a furnace using plastic waste, and the temperature change and the intensity and quality of odorous gas were measured during the spontaneous combustion process. Plastic waste composed of a mixture of a variety of single plastic film was subjected to hot temperature environment as a model plastic waste. Both the odor generated from this model plastic waste and the odor generated from each single plastic were measured. As a result, it was found that, in the case of the waste as a single specimen, the odor intensity is increased and, in the aspect of odor quality, the ratio of the similarity index aldehyde/ammonia increased in the ignition process due to heat accumulation. In addition, when the waste of each individual plastic was burnt using TG-DTA under air and Nitrogen condition, the odor also showed a similar tendency to that obtained in the experiment for the mixture as a single specimen.