通过介电屏障排放等离子体排放在土壤中的聚钢微塑污染物的有效降解
Jingyuan Sima1, Jun Wang2, Jiaxing Song1
1State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
Journal of hazardous materials
|February 23, 2024
概括
大气介电屏障放电 (DBD) 血有效地使用活性氧物种 (ROS) 降解聚烯微塑料 (PS-MPs). 这种新的方法实现了高降解效率,将PS-MP转化为COx.等气体.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 等离子体化学
背景情况:
- 微塑料污染,特别是聚乙烯 (PS-MPs) 的污染,对环境构成重大威胁.
- 传统的降解方法往往缺乏效率或产生有害的副产品.
- 开发有效和环保的微塑料整治解决方案至关重要.
研究的目的:
- 研究大气介电屏障放电 (DBD) 血用于降解聚烯微塑料 (PS-MPs) 的使用.
- 探索反应性氧物种 (ROS) 和血温度在降解过程中的作用.
- 优化降解参数,分析产生的产品和机制.
主要方法:
- 利用大气介电屏障放电 (DBD) 血产生反应性氧物种 (ROS).
- 研究了应用电压,空气流速和PS-MP度对降解效率的影响.
- 分析了降解产物,重点关注像COx这样的气态化合物,并确定了能效.
主要成果:
- 在60分钟后,在20.1kV下达到98.7%的高PS-MPs降解效率.
- 确定了气体产品,主要是COx (96.4%),在1重%的PS-MPs度下,转化率为90.6%.
- 证明了高能效 (8.80 mg/kJ) 和快速降解性能.
结论:
- 大气DBD等离子是PS-MPs快速全面降解的高效和有前途的技术.
- 产生ROS和高于PS-MP点的血温度是有效降解的关键因素.
- 这项研究为通过先进的等离子体技术减轻微塑料污染提供了可行的途径.
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