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

堆积的塑料垃圾会产生自燃。在自燃大规模进行的过程中，外界很难注意到堆积的塑料垃圾内部开始燃烧的微小迹象。利用废旧塑料进行了自燃模拟实验，测量了自燃过程中的温度变化、恶臭气体的强度和质量。以多种单一塑料薄膜混合而成的塑料垃圾作为模型塑料垃圾进行高温环境试验。测量了模型塑料废物产生的气味和单个塑料产生的气味。结果发现，当废物作为单个试样时，气味强度增加，在气味质量方面，在点火过程中，由于热量积累，相似指数醛/氨的比值增加。此外，在空气和氮气条件下，使用TG-DTA燃烧每个塑料的废物时，气味也表现出与单一样品混合物实验相似的趋势。

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.