微塑料如何影响污泥热解行为:热重力测量质谱分析和生物炭特征
Qiao Xiong1, Yinqiu Li1, Chaohua Hou2
1College of Urban and Environmental Sciences, Hubei Normal University, Huangshi, Hubei 435002, China; Huangshi Key Laboratory of Prevention and Control of Soil Pollution (Hubei Normal University), Huangshi, Hubei 435002, China.
Waste management (New York, N.Y.)
|November 4, 2024
概括
污水污泥中的微塑料会影响热解. 聚乙烯 (PVC) 增强了该过程,而聚烯 (PP) 和聚乙烯 (PE) 抑制了该过程,改变了气体产品和生物炭的特性.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 微塑料 (MPs) 在污水污泥 (SS) 中越来越多地发现显著度.
- 在SS中存在MPs,需要了解它们对污泥处理过程 (如热解) 的影响.
研究的目的:
- 研究常见的MPs (聚烯,聚乙烯,聚乙烯) 对污水污泥热解的影响.
- 分析热解特征的变化,气态产品的演变和生物炭特性.
主要方法:
- 热重力测量-质谱测量 (TG-MS) 用于热解分析.
- 由此产生的生物炭的物理化学性质分析.
主要成果:
- 聚乙烯 (PVC) 的MP增强了SS热解,而聚烯 (PP) 和聚乙烯 (PE) 的MP显示出抑制作用.
- 添加MP通常会减少总体气体产品,但会增加可燃气体 (H2,CH4,C2H2) 的比例.
- 由于PVC的存在,使生物炭变得更加多孔,稳定和芳香.
结论:
- MPs显著改变了污水污泥的热解性能和生物炭特性.
- 聚烯的类型会影响热解的结果,而PVC对生物炭质量有好处.
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