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首页> 外文期刊>The Science of the Total Environment >Differences in the aerosolization behavior of microorganisms as revealed through their transport by biogas
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Differences in the aerosolization behavior of microorganisms as revealed through their transport by biogas

机译：微生物通过沼气运输所揭示的雾化行为差异

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The aerosol microbial diversity of biogas was analyzed in order to examine the aerosolization behavior of microorganisms. Six biogas samples were analyzed: five from mesophilic and thermophilic anaerobic digesters treating different wastes, and one from landfill. Epifluorescent microscopic counts reveal that with 10~6 Prokarya m~(-3), only one per one thousand billion were aerosolized from the digestor sludges to the biogas. SSU (Small Sub Unit) ribosomal fingerprinting (Single Strand Conformation Polymorphism) shows that microbial communities in the biogas were not just a rough copy of anaerobic digester microbial communities and underlines that all microorganisms are not equally convoyed by biogas. To assess the difference occurring in aerosolization, 675 biogas-borne SSU ribosomal DNA were analyzed and compared to published anaerobic digester microbial diversity. Results show that microorganisms belonging to Archaea, Deltaproteobacteria, Spirochaetes, Thermotogae, Chloroflexi phyla and sulfate-reducing groups were non-aerosolized whereas microorganisms belonging to Alphaproteobacteria, Betapro-teobacteria, Gammaproteobacteria, TM7 phyla as well as strictly aerobic and occasionally pathogenic species presented high levels of aerosolization. Finally, microorganisms belonging to Actinobacteria, Firmicutes and Bacteroidetes phyla represent passively-aerosolized microorganisms with similar frequencies in biogas-borne and anaerobic digester microbial communities.
机译：为了检查微生物的气溶胶化行为，分析了沼气的气溶胶微生物多样性。分析了六个沼气样品：五个来自中温和高温厌氧消化池，用于处理不同的废物，另一个来自垃圾填埋场。落射荧光显微镜计数显示，在10〜6 Prokarya m〜（-3）中，每千亿中只有一个被从消化池污泥雾化为沼气。 SSU（小亚单位）核糖体指纹图谱（单链构象多态性）表明，沼气中的微生物群落不仅是厌氧消化器微生物群落的粗略复制，而且还强调了并非所有微生物都被沼气带动。为了评估雾化过程中发生的差异，分析了675种沼气传播的SSU核糖体DNA，并将其与已发表的厌氧消化器微生物多样性进行了比较。结果表明，属于古细菌，三角洲细菌，螺旋藻，嗜热菌，叶绿藻和硫酸盐还原族的微生物没有被雾化，而属于甲级杆菌，贝塔菌，丙种细菌，TM7菌以及高度需氧和偶尔致病菌的微生物雾化水平。最后，属于放线菌，硬毛菌和门生细菌的微生物代表了在沼气传播和厌氧消化池微生物群落中具有相似频率的被动气雾化微生物。

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