用于从有机物丰富的基质中提取微塑料的方法的优化和孤立颗粒评估
Dovilė Motiejauskaitė1, Karolina Barčauskaitė1
1Lithuanian Research Centre for Agriculture and Forestry, Institute of Agriculture Instituto al. 1, Akademija, LT-58344, Kėdainiai distr., Lithuania.
Chemosphere
|June 8, 2025
概括
这项研究通过将消化和密度分离相结合,优化了从复杂的污水泥中提取微塑料 (MP). 开发的方法有效地将MP从废水处理厂污泥中隔离出来,揭示了碎片形状和透明颜色作为主要特征.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 聚合物科学 聚合物科学
背景情况:
- 从污水污泥等复杂基质中提取微塑料 (MP) 是一个挑战.
- 现有的MP隔离方法需要针对各种环境样本进行优化.
研究的目的:
- 通过将消化和密度分离相结合,优化从污水泥中提取微塑料.
- 调整和验证优化方法,从废水处理厂污泥中分离微塑料.
- 根据颜色,形状和尺寸来描述分离的微塑料.
主要方法:
- 使用了芬顿的试剂来消化有机物质和化 (NaBr) 来进行密度分离.
- 优化反应条件,包括过氧化 (H2O2) 添加间隔.
- 采用拉曼光谱来确认处理后的微塑料的完整性.
主要成果:
- 实现了6.76%至63.38%的有机物去除效率,通过每小时添加H2O2来增强.
- 芬顿的试剂没有显著影响常见的微塑料类型 (HDPE,LDPE,PP,PA).
- 从污水污泥中分离出来的微塑料主要是透明的碎片,较小的尺寸在百分比上增加.
结论:
- 综合消化和密度分离方法对于从污水污泥中提取微塑料是有效的.
- 优化方法适用于来自各种废水处理厂规模的污泥.
- 污水污泥中的微塑料特性主要是碎片形状,透明,并且取决于大小.
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