使用聚化的光降解和光催化降解聚烯微塑料的凝结研究
G Meera1, Indu M Sasidharan Pillai2, P G Reji1
1Environmental Engineering and Management, UKF College of Engineering and Technology, Kollam, Kerala, India.
Waste management (New York, N.Y.)
|September 23, 2023
概括
先进的氧化工艺有效地使用紫外线照射和二氧化来降解聚烯微塑料. 紫外线处理显著提高了通过凝固的微塑料去除效率,特别是对于较大的颗粒.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 微塑料是全球范围内发现的持续性环境污染物.
- 先进的氧化工艺 (AOP) 为微塑料降解提供了新的解决方案.
- 了解对微塑料的紫外线和光催化作用对于整治至关重要.
研究的目的:
- 研究UV-A和UV-C辐射对聚钢 (PS) 微塑性质的影响.
- 为了评估聚化 (PAC) 凝固对紫外线处理的微塑料的有效性.
- 评估颗粒大小和辐射类型对微塑料去除的影响.
主要方法:
- 不同尺寸的聚烯微塑料经过UV-C,UV-A和太阳辐射,有或没有二氧化.
- 用扫描电子显微镜 (SEM) 和光谱 (ATR-FTIR,XPS) 分析了表面形态和化学变化.
- 在辐射前和辐射后使用聚化 (PAC) 测试凝血性能.
主要成果:
- 紫外线辐射诱导了微塑料的变色,脆性和疏水性损失.
- SEM显示了表面光滑和融化;光谱显示了化学变化和氧化群.
- 与UV-A (74.2%) 相比,UV-C辐射的微塑料显示出明显更高的PAC去除效率 (高达99%).
- 较大的微塑料颗粒和在UV-C下的光催化降解产生了更高的去除率.
结论:
- 紫外线照射,特别是光催化作用的紫外线-C,有效地改变了微塑料的特性,以加强其去除.
- 聚化凝固是一种可行的方法来去除UV处理的微塑料,其效率取决于照射类型和颗粒大小.
- 这项研究强调了AOPs在减轻微塑料污染方面的潜力.
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