传热流体 (HTF) 对环境和健康的影响
R P Martínez-Esteban1, V López-Rodas1, J García1
1Animal Science (Genetics), School of Veterinary Medicine, Complutense University of Madrid, Av. Puerta de Hierro s/n., 28040, Madrid, Spain.
Environmental pollution (Barking, Essex : 1987)
|April 5, 2025
概括
从太阳能热系统中泄露的传热液 (HTF) 构成环境风险. 微藻和细菌对HTF高度敏感,更长的暴露时间会对包括人类细胞系在内的所有测试生物体造成更大的损害.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 生物技术是生物技术.
背景情况:
- 太阳能热系统正在全球扩张,被认为是清洁能源.
- 生命周期分析显示,由于意外的传热流体 (HTF) 泄漏,存在环境问题.
- 了解HTF的生态毒理影响对于评估太阳能热能真正的环境足迹至关重要.
研究的目的:
- 评估与传热液 (HTF) 泄漏有关的人类健康和环境风险.
- 为了比较商业和使用的 (热降解) HTF 的毒性.
- 为了确定各种生物和细胞系对HTF暴露的敏感性.
主要方法:
- 在人类细胞系 (纤维细胞,肝细胞) 和模型生物 (Allivibrio fisherii,Dictyosphaerium chlorelloides,Emiliana huxleyi,Artemia salina) 上进行了标准化毒理学测试.
- 生物体暴露于HTF度范围为0.1至15μg/L的短时间 (30分钟至72小时) 和长时间 (20天).
- 进行了商业和使用的HTF之间的毒性比较分析.
主要成果:
- 发现使用的HTF比商业HTF更有毒.
- 微藻 (Dictyosphaerium chlorelloides,Emiliana huxleyi) 呈现出极度敏感性 (IC50 ≈ 3.5 μg/L),其次是Allivibrio fisherii (IC50 ≈ 200 μg/L),人类细胞系 (IC50 ≈ 1000 μg/L) 和Artemia salina (IC50 ≈ 2000 μg/L),这些微藻的敏感性更高.
- 在所有受试者中,长时间暴露 (20天) 导致细胞损伤明显增加,而较短的暴露时间 (72小时) 显著增加.
结论:
- 太阳能热发电厂的高铁泄漏对环境的影响比以前所认为的要大得多.
- 水生生物,特别是微藻类的高度敏感性凸显了显著的生态风险.
- 目前对太阳能热能环保性的评估可能需要修订,考虑到HTF的生态毒性.
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