植物释放,病原体死亡:具有记录的抗微生物活性的植物与雨水生物过器中的Campylobacter和便指标减弱有关
P Galbraith1, R Henry2, D T McCarthy3
1Department of Civil Engineering, Monash University, Wellington Road, Clayton, Victoria 3800, Australia; CSIRO Agriculture and Food, Building 10, 39 Kessels Rd, Coopers Plains, Queensland 4108, Australia.
The Science of the total environment
|October 7, 2023
概括
雨水生物过器中的 Melaleuca 种类显著改善了像大肠杆菌和 Enterococcus faecalis 等便细菌的去除. 这种植物介导的处理增强了病原体的减少,提供了更好的雨水质量管理.
科学领域:
- 环境微生物学环境微生物学
- 水处理技术水处理技术.
- 植物科学 植物科学
背景情况:
- 雨水生物过器显示出治疗便微生物的潜力,但性能是可变的.
- 生物过器中的植物选择是影响治疗疗效的关键设计因素.
- 某些植物物种的抗微生物特性可能会增强病原体的去除.
研究的目的:
- 调查是否有记录的抗微生物活性的植物,特别是 Melaleuca 种类,可以改善生物过器中的便细菌处理.
- 为了比较Melaleuca物种与其他植物配置的疗效,以消除大肠杆菌,菌菌和Campylobacter jejuni.
- 确定影响生物过器中植物媒介细菌衰减的关键因素.
主要方法:
- 实验室规模的生物过器 (n=30) 被建立并植被不同的植物物种,包括 Melaleuca linariifolia 和 Correa appressa.
- 在模拟的澳大利亚气候条件下,给生物过器注入含有便细菌的合成雨水.
- 监测了流出和淹没区域的细菌度,并进行了统计分析以评估治疗效果.
主要成果:
- 与其他植物配置相比,Melaleuca物种始终提高了所有测试的可培养细菌的去除率.
- 在1-2天内,M. linariifolia显著降低了细菌度,清除了大量的大肠杆菌,E. faecalis和C. jejuni.
- 随着生物过器的年龄和延长的先行干燥期,细菌衰减有所改善,特别是对于大肠杆菌和E. faecalis.
结论:
- 具有抗微生物活性的植物,如Melaleuca物种,可以显著改善雨水生物过器中的便细菌处理.
- 植物介导的机制在病原体去除中发挥着至关重要的作用,为提高生物过器性能提供了可行的策略.
- 研究结果为设计有效的生物过器系统提供了关键的见解,以优化雨水病原体处理和公共卫生保护.
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