对矿化废物开采过程中的生物气溶污染的洞察:微生物气溶化行为和潜在的致病性
Ya-Nan Wang1, Qingzhao Wang1, Yahui Li1
1Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, Qingdao University of Technology, School of Environmental and Municipal Engineering, Qingdao 266520, China.
Journal of hazardous materials
|October 18, 2024
概括
垃圾填埋场开采释放生物气溶,增加了工人和居民的健康风险. 这项研究量化了微生物气溶和病原性,确定了导致污染的关键微生物和毒性因素.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 公共卫生 公共卫生
背景情况:
- 垃圾填埋场采矿是人为生物气溶释放的重要来源.
- 生物气溶对职业暴露人员和附近居民构成潜在的健康风险.
研究的目的:
- 在垃圾填埋采矿过程中系统地调查微生物气溶的行为.
- 评估释放的生物气溶的潜在致病性.
主要方法:
- 在不同垃圾填埋采矿区的细菌和真菌气溶度的量化.
- 气溶颗粒大小分布的分析.
- 确定特定致病微生物的气溶化指数.
- 在微生物中识别毒性因子基因 (VFGs).
主要成果:
- 在废物开采区发现的最高细菌气溶度 (5968 ± 1608 CFU/m3).
- 在废物选区域发现的最高真菌气溶度 (1196 ± 370 CFU/m3).
- 细菌气溶的峰值为4.7-7.0微米,真菌气溶的峰值为>7.0微米.
- 像Arthrobacter和Aspergillus这样的致病微生物显示出高的气溶性能力.
- 确定了携带VFG的微生物 (例如,Lysobacter,Luteimonas),表明VFG传播的可能性.
结论:
- 垃圾填埋场采矿活动大大导致生物气溶污染.
- 特定的微生物物种和颗粒大小与更高的气溶化有关.
- 毒性因子基因的存在凸显了这些生物气溶对健康的潜在威胁.
- 了解这些风险对于保护工人和社区健康至关重要.
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