通过使用硫改性铁基材料的活性过氧硫酸盐降解四环素
Shanxue Gao1, Nan Zhang1, Lei Chen1
1College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
概括
修改硫的铁催化剂有效地激活硫酸盐去除四环素,达到92.6%的效率. 这种增强的催化剂对水处理中的降解抗生素具有前景.
科学领域:
- 环境化学环境化学
- 催化剂是一种催化剂.
- 水处理 处理水的方法
背景情况:
- 基于铁的催化剂激活硫酸盐以降解抗生素.
- 催化剂激活效率是基于硫酸盐的氧化过程中的一个关键挑战.
研究的目的:
- 开发和评估一种硫基改性铁基催化剂 (S-Fe),用于增强酸硫酸盐激活.
- 调查S-Fe/硫酸盐 (PDS) 系统在去除四环素 (TCH) 的有效性.
- 阐明涉及TCH去除的降解途径和基因物种.
主要方法:
- 硫酸和硫酸铁的共同沉,以合成S-Fe催化剂.
- 批量实验用于研究不同条件下的TCH去除效率 (TCH度,PDS度,pH,催化剂剂量).
- 液体染色学-质谱学 (LC-MS) 用于产品识别和激素火实验,以确定激素的贡献.
主要成果:
- 在最佳条件下 (1.0 g/L S-Fe,2.0 g/L PDS,pH 7),S-Fe/PDS系统在30分钟内实现了92.6%的TCH去除效率.
- 与未经修改的Fe催化剂相比,S-Fe催化剂的效率更高.
- 硫酸盐 (SO4−•) 和基 (•OH) 基都对TCH降解作出了贡献,其中SO4−•占主导地位.
- S-Fe催化剂表现出良好的稳定性和可重复使用性.
结论:
- 硫的修改提高了铁基催化剂的性能,以激活硫酸盐.
- S-Fe/PDS系统是从水中去除四环素抗生素的高效方法.
- 该研究提供了对降解机制的见解,并强调了改性催化剂在环境修复方面的潜力.
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