通过使用非热气氛压力等离子体产生的气体减少土壤中的微生物负荷
Wirinthip Ketya1, Nan-Nan Yu1, Tirtha Raj Acharya2
1Plasma Bioscience Research Center, Department of Plasma-Bio Display, Kwangwoon University, Seoul 01897, South Korea.
Journal of hazardous materials
|November 30, 2024
概括
大气压非热等离子体气有效降低土壤微生物负载,包括病原体. 这种土壤卫生方法还可以提高植物生长和营养水平,对土壤微生物群的影响最小.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 血科学是一门科学课.
背景情况:
- 用生物废物污染土壤会增加微生物负载,增加病原体风险,破坏营养循环.
- 有效的土壤卫生方法对于农业和环境健康至关重要.
研究的目的:
- 研究大气压非热等离子体产生的气体对降低土壤微生物负载的有效性.
- 评估等离子体气处理对土壤微生物群落结构和土壤肥力的影响.
主要方法:
- 利用介电屏障放电 (DBD) 电极等离子产生土壤处理气体.
- 测试了血气体对细菌细胞,悬浮中的真菌子,,苗圃土壤和田地土壤的有效性.
- 分析了微生物群落多样性和丰富性的变化,并测量了菜植物的生长和土壤酸盐水平.
主要成果:
- 血气失活了90%以上的细菌和真菌在悬浮液和体中.
- 在苗圃土壤中,等离子体气消灭了50%的细菌和40%的真菌.
- 田地土壤处理使有氧微生物群减少了10-29%,微生物多样性和特定类 (蛋白质细菌,基底菌群) 略有减少.
- 在经过处理的田地土壤中显著增加了菜植物的生长和土壤酸盐水平.
结论:
- 由等离子体产生的气体显示出作为土壤卫生工具的潜力.
- 处理可以减少微生物负载,而不会大幅改变土壤微生物群体.
- 应用等离子体气体可以提高土壤肥力和植物生长.
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