化红泥生物炭作为可见光驱动的过氧硫酸盐 (PMS) 激活剂,用于有效降解抗生素:资源利用,机制见解和毒性评估
Chengzong Jian1, Peng Chen2, Zhiliang Cheng1
1School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
Environmental research
|February 27, 2025
概括
一种由工业废物制成的新型催化剂有效地使用过氧硫酸盐和可见光降解抗生素废水. 这种"废弃物为废弃物"的方法为环境整治提供了经济有效的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 抗生素废水处理面临低效率,高成本和能源消耗等挑战.
- 工业和生物质废弃物带来了处置挑战,需要以资源为导向的利用.
研究的目的:
- 开发一种新的,可回收的催化剂,以有效地降解抗生素废水.
- 使用催化剂和可见光来激活过氧硫酸盐 (PMS),以去除四环素化物 (TCH).
主要方法:
- 从红泥 (RM) 和生物质废物通过化和共同热解合成可回收催化剂 ((RM/BC) H).
- 在LED可见光下用 (RM/BC) H激活PMS以降解TCH在水溶液中.
- 采用电子磁共振 (EPR) 和火实验来识别反应性氧物种和密度功能理论 (DFT) 来获得机械洞察力.
主要成果:
- (RM/BC) H + PMS + LED-vis光系统实现了82.6%的TCH降解和45.6%的TOC去除.
- 催化剂效率在5个循环后保持稳定在80%以上,显示出出色的可回收性.
- 确定了硫酸盐基 (SO4•-),基 (•OH),超氧化基 (O2•-) 和单片氧 (1O2) 作为TCH降解中的关键物种.
结论:
- 化修饰增强了催化剂的电子转移和电导率.
- Fe2+在PMS激活中起着至关重要的作用,Fe3+/Fe2+循环,在可见光的帮助下,确保了催化剂的稳定性.
- 本研究提出了一种具有成本效益和高效的战略,用于使用废物衍生材料降解抗生素废水.
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