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被纳米塑料暴露的改性玄武纤维 (MBF) 生物巢反应堆的运行性能
Luming Wang1, Xuan Li2, Juan Huang1
1Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China.
Journal of hazardous materials
|October 8, 2024
概括
改性玄武纤维 (MBF) 生物巢显示出优越的废水处理性能,即使使用纳米塑料. 修改了和的MBF生物巢有效地去除污染物并抵抗纳米塑料污染.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
背景情况:
- 改性玄武纤维 (MBF) 的生物 (生物) 对废水处理具有前景.
- 纳米塑料对MBF生物巢性能和微生物群落的影响在很大程度上是未知的.
研究的目的:
- 与接触氧化反应堆中的传统玄武纤维 (BF) 相比,评估MBF生物巢的净化效率和微生物功能.
- 在纳米塑料暴露下评估MBF生物巢的弹性.
主要方法:
- 研究了四种类型的MBF和BF作为接触氧化反应堆中的载体.
- 分析了微生物生长,细胞外聚合物质 (EPS) 分泌和营养物质的去除 (NH4+-N,COD,TN,TP).
- 在暴露于纳米塑料后,评估性能和微生物社区的变化.
主要成果:
- 与BF相比,MBF表现出优越的生物相容性和生长效应.
- 在Ca-MBF和Mn-MBF生物巢中,吸收,EPS分泌和PN/PS比率都有所提高.
- 所有的MBF类型都保持了稳定的NH4+-N和COD去除;Mn-MBF在TN和TP去除方面表现出色.
- -MBF和Ca-MBF处理方式抵御了纳米塑料污染,保持了高TP和COD去除效率.
- 特定的细菌属 (Zoogloea, Meganema) 繁荣发展,有助于增强处理和纳米塑料耐药性.
结论:
- MBF生物巢,特别是Ca-MBF和Mn-MBF,提供增强的结构稳定性和优越的废水处理能力.
- 这些修改后的生物巢表现出对纳米塑料污染的弹性,使它们适用于先进的废水处理应用.
- 该研究强调了定制的MBF生物的潜力,用于强大的微生物社区发展和污染环境中的污染物去除.
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