在水溶液中的微塑料上磁修改的工业大麻生物炭的吸附和机制
Xi Jiang1, Youxi Cai1, Hanwen Deng1
1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, Yunnan, China.
Journal of contaminant hydrology
|January 7, 2026
概括
这项研究从大麻中开发了磁性生物炭 (MBC),以从水中去除微塑料 (MP). MBC实现了89.97%的聚乙烯微球的去除,显著超过原始生物炭.
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 化学 化学
背景情况:
- 微塑料 (MP) 是来自塑料废弃物的普遍环境污染物,由于其流动性和潜在的毒性,它们构成风险.
- 国会议员造成的地下水污染是一个日益严重的全球问题,需要有效的清除策略.
研究的目的:
- 开发和评估一种磁修饰生物炭 (MBC) 吸收剂,以有效地从水溶液中去除微塑料.
- 通过使用MBC. 调查吸附机制和影响微塑料去除微塑料的因素.
主要方法:
- 由KOH激活的工业大麻草生物炭制成的磁性生物炭 (MBC).
- 测试了MBC在水溶液中的1μm聚乙烯 (PS) 微球的去除效率.
- 分析了吸附动力学,同热和热力学,并评估了多个周期的MBC稳定性.
主要成果:
- 与原始生物炭 (BC) 相比,MBC实现了89.97%的PS微球去除,增加了9.30倍.
- 吸附受溶液pH值和干扰离子的影响,MBC表现出良好的稳定性 (5个循环后80%以上的去除).
- 吸附机制包括静电相互作用,表面复杂化,金属-O-MPs复杂化和π-π相互作用,表明一种自发的,温度增强的过程.
结论:
- 来自大麻的磁修改生物炭是一种高效的吸收剂,用于从水中去除微塑料.
- 该研究提供了对MBC吸附机制和稳定性的见解,为减轻微塑料污染提供了有希望的方法.
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