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丝状藻及其磁性生物炭的有效去除微塑料:性能和机制
Xinyang Li1, Wenjia Liu2, Jingshen Zhang3
1College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China.
Chemosphere
|April 28, 2024
概括
这项研究开发了磁性丝状藻类生物炭,以从水中去除微塑料 (MP),显示出高吸附能力和可重复使用性,用于有效的水疗.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
背景情况:
- 丝状藻类繁殖和微塑料 (MP) 在城市水系统中构成重大环境挑战.
- 需要同步的去除策略来解决这些同时出现的污染物.
研究的目的:
- 为了研究丝状藻类装载MP的能力.
- 为了合成磁性丝状藻类生物炭以去除MP.
- 探索生物炭的吸附机制和效率.
主要方法:
- 磁丝藻生物炭 (Fe3O4) 的水热合成.
- 使用SEM,FTIR,XPS和XRD进行表征.
- 吸附实验评估动力学,异热和pH效应.
主要成果:
- 丝状藻类证明了MPs通过纠和粘附 (14.1 ± 5个项目/g) 来加载.
- 磁性生物炭对聚乙烯MPs (PS-MPs) 的理论最大吸附能力很高: 176.99 mg/g (原始) 和215.58 mg/g (磁性).
- 生物炭吸附剂在五个周期内显示出良好的可重复使用性.
结论:
- 磁性丝状藻类生物炭是有效的在现场补救的河流MPs污染.
- 这种方法为回收藻类废物提供了一个可行的策略,同时减轻PM污染.
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