使用电离辐射处理类固醇发酵残留物:降解类固醇和降低生物毒性
Libing Chu1, Yuening Song2, Jianlong Wang1
1Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, PR China; CAEA Center of Excellence on Nuclear Technology Applications for Electron Beam on Environmental Application, Tsinghua University, 100084 Beijing, PR China.
Bioresource technology
|July 29, 2025
概括
电离辐射有效地降解了废物中的持续性类固醇激素,如9-二二二 (OHAD). 这种先进的氧化方法还减少了微生物负载和环境毒性,为类固醇发酵残留提供了全面的解决方案.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 微生物学 微生物学
背景情况:
- 类固醇激素,如9-hydroxyandrostenedione (OHAD),在发酵残留物中持续存在,由于生物积累和生态毒性,造成环境风险.
- 需要有效的处理方法来减轻这些持久性类固醇污染物的环境影响.
研究的目的:
- 研究电离辐射作为一种先进的氧化过程,用于降解类固醇发酵残留物中的9-二二二 (OHAD) 的有效性.
- 评估辐射对微生物群体的影响以及残留物的整体生物毒性.
主要方法:
- 类固醇发酵残留物经过不同剂量的电离辐射处理.
- 使用分析技术量化OHAD降解.
- 确定了细菌数量,并进行小麦种子发芽和根延长测试以评估生物毒性.
主要成果:
- 电离辐射在50kGy时实现了高OHAD去除效率 (96%在331mg/kg和88%在606mg/kg)
- 细菌数量在25kGy时减少了2个log序,在50kGy时完全失活.
- 辐射显著降低了残留物的生物毒性,并减少了潜在的致病细菌的数量.
结论:
- 电离辐射是一种高效的方法,用于降解类固醇发酵残留物中的OHAD.
- 该过程同时使微生物失活并降低生物毒性,为处理类固醇废物提供了可持续的解决方案.
- 这种先进的氧化技术减轻了与持久的类固醇污染物相关的环境风险.
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