在水中提升了硫胺抗生素的去除,使用来自米的高性能S-nZVI/BC
Xiao-Ming Zou1, Tiao Zhang1, Yu-Hua Dong1
1Key Laboratory of Jiangxi Province for Functional Biology and Pollution Control in Red Soil Regions, School of Life Science, Jinggangshan University, Ji'an, 343009, China.
Journal of environmental management
|January 5, 2025
概括
这项研究开发了新型S-nZVI/BC复合物,由草生物炭和纳米级零价值铁 (nZVI) 来有效降解废水中的硫胺抗生素 (SAs),达到高达98.3%的清除效率.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 硫胺抗生素 (SAs) 在生物医学中是必不可少的,但作为环境污染物,它们具有显著的生态毒理风险.
- 开发可持续和有效的SA降解方法对于减轻环境污染至关重要.
研究的目的:
- 合成和表征S-nZVI/BC复合物,以有效地从废水中去除硫胺抗生素.
- 使用开发的复合材料,研究SA的降解机制和降解途径.
主要方法:
- 从大米中提取的生物炭 (BC) 被烧化并用作纳米级零价值铁 (nZVI) 的支,以创建S-nZVI/BC复合材料.
- 使用特定的Fe/C和Fe/S摩尔比率 (3:1和50:1) 优化复合材料合成.
- 通过机理学研究,DFT,QSAR和PCA评估了SA去除效率,稳定性,可重复使用性和降解机制.
主要成果:
- 该S-nZVI/BC复合材料表现出高SA去除效率 (高达98.3%),对共存的离子有很好的耐受性.
- 复合材料在五个真实废水样本中显示出一致的性能,稳定性和可重复使用性.
- 机理学研究显示S-nZVI/BC和硫酸盐之间有协同作用,增强了硫酸盐自由基和Fe2+的反应性.
结论:
- S-nZVI/BC复合材料为工业废水处理提供了一个有希望的环保解决方案,有效降解硫胺抗生素.
- 该研究提供了关于SAS降解机制和途径的宝贵见解,有助于开发先进的水处理技术.
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