微藻介导细菌群落的塑造增强了抗生素去除和抗生素耐药性控制
Shupeng Lin1, Minmin Pan2, Yanfang Ma3
1College of Engineering, China Agricultural University, Beijing 100083, PR China.
Bioresource technology
|November 2, 2025
概括
微藻-细菌共生污泥有效地去除硫黄 (SDZ) 并回收营养. 调节微藻接种控制微生物的继承,减少废水处理过程中抗生素耐药性基因 (ARG).
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
- 生物修复是一种生物修复.
背景情况:
- 微藻-细菌共生污泥 (MBSS) 系统显示了废水处理和营养回收的潜力.
- 抗生素压力,特别是来自硫法酸 (SDZ),挑战了MBSS的稳定性和效率.
- 控制抗生素耐药性基因 (ARG) 的传播对于可持续的废水管理至关重要.
研究的目的:
- 调查MBSS.中含有SDZ的废水整治中的微生物继承策略.
- 评估微藻与活性污泥接种比对SDZ去除,营养物质上循环和ARG减少的影响.
- 了解微生物社区转移在促进SDZ退化和减轻ARG扩散中的作用.
主要方法:
- 使用不同微藻与活性污泥接种比率的MBSS系统优化.
- 量化SDZ清除效率和营养物质 (,) 上循环率的量化.
- 超基因组分析以表征微生物群落结构,并确定与SDZ移除和ARG丰富度相关的关键属.
主要成果:
- 最佳的SDZ去除 (99.8%) 实现在1:3微藻与泥的比率;最高的营养回收在1:1的比率.
- 微藻属Chlorella和Micractinium与SDZ降解正相关.
- 微藻接种促进了Rhodanobacter和Dokdonella的主导地位,将sul1和sul2ARG降低到22.9%.
结论:
- 在MBSS中调节微藻接种是提高SDZ去除和营养恢复的有效策略.
- 微藻驱动的微生物继承促进了SDZ的共同降解,并显著控制了ARG的扩散.
- 这种方法为在抗生素压力下处理废水提供了可持续的解决方案,同时最大限度地降低了环境风险.
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