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铜离子对Pseudomonas sp.的协同作用 DX-21用于增强四环素去除:一个机理学研究
Lilong Yan1, Yifei Ma1, Zhixuan Yang1
1College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
Journal of hazardous materials
|October 1, 2025
概括
将铜 (Cu2+) 添加到微生物菌株DX-21中,显著增强了从废水中去除四环素 (TC) 的能力. 这种生物增量策略提高了代谢效率,减少了有害的副产品,为抗生素污染提供了有希望的解决方案.
科学领域:
- 环境微生物学 环境微生物学
- 生物修复是一种生物修复.
- 废水处理 废水处理
背景情况:
- 废水中的四环素 (TC) 污染威胁着生态平衡.
- 现有的微生物菌株对TC降解的能力有限.
- 提高微生物代谢效率对于TC去除至关重要.
研究的目的:
- 研究铜离子 (Cu2+) 对DX-21菌株TC降解能力的影响.
- 阐明Cu2+增强TC去除的机制.
- 评估金属离子添加用于改善抗生素生物修复的潜力.
主要方法:
- 补充Cu2+用于DX-21.1.菌株的微生物培养.
- 测量TC去除率和分析副产品.
- 转录组分析和分子对接模拟以了解分子机制.
主要成果:
- Cu2+的添加使TC的去除率从0.309增加到0.343 mg/L·h) 在0.5 mg/L时.
- Cu2+增强了细胞外聚合物物质 (EPS) 的分泌和酶活动.
- 2+减少了副产品的多样性,并保持了降解产品的生物安全性.
结论:
- 铜离子 (Cu2+) 有效地提高了DX-21菌株的代谢能力,以去除四环素.
- 该研究加深了对金属离子在微生物抗生素降解中的作用的理解.
- 用金属离子进行生物增量是改善废水处理中抗生素去除的可行策略.
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