无机添加剂和老化对聚氨泡燃烧产生的多环芳排放的影响
Dóra Mentes1, Anikó Mentes2, László Farkas3
1Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Miskolc 3515, Hungary; Higher Education and Industrial Cooperation Centre University, Miskolc-Egyetemváros, Miskolc 3515, Hungary.
Journal of hazardous materials
|February 28, 2026
概括
聚氨泡 (PUF) 的燃烧会释放有害的多环芳 (PAH). 这项研究表明,温度和热老化显著增加了PAH排放,而像CaCO3和CaCl2这样的无机添加剂对控制这些排放有不同的影响.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 燃烧科学 燃烧科学
背景情况:
- 多环芳 (PAH) 是聚氨泡 (PUF) 燃烧过程中产生的环境污染物.
- 无机添加剂和热老化对PUF产生的PAH排放的影响尚不清楚.
研究的目的:
- 调查无机添加剂 (CaCO3,CaCl2) 和热老化对PUFsPAH排放的影响.
- 为了确定燃烧温度 (650-900°C) 对添加剂的老化和未老化的PUF中PAH形成的影响.
主要方法:
- 灵活的PUFs与不同的CaCO3和CaCl2度 (5%,10%) 被合成和热老化.
- 陈旧和未陈旧的PUF样品在管炉中燃烧,并使用GC-MS收集和分析颗粒结合的PAH.
- 使用统计分析 (三向ANOVA,Tukey HSD) 来评估衰老,添加剂类型/度和温度的影响.
主要成果:
- 燃烧温度是PAH排放的主要驱动因素,在850°C以上观察到急剧增加,特别是在老化泡中.
- 热老化始终促进了更重的PAHs的形成,表明聚合物降解有助于芳香的生长.
- 在非老化泡中,CaCO3通常抑制了PAH排放,而CaCl2则表现出双重效应,在中间温度 (750-850°C) 上促进PAH排放,在更高温度 (900°C) 上抑制PAH排放.
结论:
- 温度和热老化是控制PUF燃烧产生的PAH排放的关键因素.
- 无机添加剂,特别是CaCO3和CaCl2,在影响PAH形成途径方面表现出不同的机制.
- 结果为设计更安全的PUF和制定有效的废物管理排放控制策略提供了洞察力.
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