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通过使用环境中基于介电屏障放电的冷等离子体洗剂有效地使气溶中的病原体无效化,为良好的室内空气质量提供设备
Ramavtar Jangra1, Kiran Ahlawat1, Ambesh Dixit1
1Department of Physics, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India.
Scientific reports
|June 25, 2023
概括
一种新的便携式冷血空气净化器有效地消除了99%以上的微生物和真菌. 这种介电屏障放电 (DBD) 装置使大肠杆菌和MS2菌体等空气中的病原体失活,为室内空气质量提供了显著的进步.
科学领域:
- 环境科学 环境科学
- 等离子体物理学的物理学
- 微生物学 微生物学
背景情况:
- 空气污染是全球主要的健康风险,导致慢性疾病.
- 空气中的病原体和小型气溶对现有的室内空气净化技术构成重大挑战.
- 传统空气净化器无法有效地去除长寿命的病原体和细微的气溶.
研究的目的:
- 开发和评估使用介电屏障放电 (DBD) 技术的便携式冷等离子空气净化器.
- 为了评估DBD装置的消毒效率与总微生物计数 (TMCs),总真菌计数 (TFCs),MS2菌体和大肠杆菌 (Escherichia coli) 相比.
- 分析设备在封闭的室内环境中的性能,最大尺寸为3 × 2.4 × 2.4 m3.
主要方法:
- 基于同轴介电屏障放电 (DBD) 几何学的便携式冷等离子体空气净化器被设计和制造.
- 该设备具有温和钢丝网电极,并且不需要输入气体,颗粒或压力差.
- 在受控的室内环境中,对总微生物计数,总真菌计数,MS2菌体和大肠杆菌的消毒效率进行了测试.
主要成果:
- 该设备在运行90分钟内实现了总微生物计数 (TMCs) 和总真菌计数 (TFCs) 的99%以上的停用.
- 在30分钟内实现了MS2菌体的完全失活 (减少超过5个日志).
- 在90分钟内实现了对大肠杆菌的完全禁用 (减少超过5个日志).
- 该装置主要产生负离子,平均存在时间超过25秒,模仿自然等离子条件.
结论:
- 开发的便携式DBD冷等离子体装置对于室内空气净化非常有效.
- 该技术显示出在禁用空气传播病原体和减少微生物负载方面具有重大潜力.
- 该设备能够产生长时间持久的负离子,这在对抗持久的空气污染物方面具有优势.
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