通过先进的氧化工艺去除fipronil,使用在上固定的酸盐激活的硫酸盐
Rayssa Thainá de Paiva Alves1, Fábio da Silva Lisboa1, Daniele Scheres Firak2
1Instituto de Física e Química, Universidade Federal de Itajubá, Itajubá, Brazil.
概括
一种基于的新型催化剂 (CoNSi) 通过产生硫酸盐基来有效地从水中去除杀虫剂fipronil (FIP). 优化研究实现了76%的FIP去除,尽管出水需要进一步的合成精炼.
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:
- 农药污染,特别是菲波尼尔 (FIP),对环境构成风险.
- 硫酸盐基是降解有机污染物的有力氧化剂.
- 开发有效的激素生成催化剂对于水资源整治至关重要.
研究的目的:
- 合成和表征-氨- (CoNSi) 材料用于硫酸盐基生成.
- 为了研究使用CoNSi催化剂从水中去除fipronil (FIP).
- 为了优化FIP降解的反应条件,并评估催化剂稳定性.
主要方法:
- CoNSi 材料的合成和表征 (ATR-FTIR,SEM-EDS,XRD,BET,DSC) 的使用.
- 通过CoNSi催化的硫酸盐自氧化产生硫酸盐基.
- 使用HPLC-DAD和Box-Behnken实验设计 (BBD) 的菲波尼尔 (FIP) 降解研究.
- 使用FAAS进行的泄漏分析.
主要成果:
- CoNSi 呈现出稳定的中孔结构,分散均.
- 在优化的条件下 (60分钟,0.30gCoNSi,0.30g硫酸盐,pH8.0) 从1.8mgL-1的初始度获得了76%的FIP去除.
- 观察到最小的泄露 (0.44 mg L-1),表明在反应条件下具有良好的催化剂稳定性.
结论:
- CoNSi材料是一个有希望的催化剂,用于生成硫酸盐基来降解FIP.
- 优化过程证明了有效地从污染水中去除FIP.
- 建议在CoNSi合成中进一步改进,以尽量减少的出,以加强环境应用.
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