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硫酸盐剂量对使用N-化生物炭的有机降解的影响:反应途径和环境影响

Shijia Li^1,2, Ruonan Duan³, Yandi Hu^4,5

¹State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, P. R. China.

Water environment research : a research publication of the Water Environment Federation

|March 12, 2025

概括

优化基于硫酸盐的先进氧化过程 (PS-AOPs) 使用N-化生物炭去除双A取决于氧化剂的选择和剂量. 过氧化硫酸盐 (PMS) 在较高度下表现更好,而过氧化硫酸盐 (PDS) 在较低度下更有效.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

基于硫酸盐的先进氧化工艺 (PS-AOPs) 有效地去除有机污染物.
碳基催化剂,如N-化生物炭 (N-BC),通过激活多氧化硫酸盐 (PMS) 和多氧化硫酸盐 (PDS) 来增强PS-AOP.
了解最佳氧化剂剂量和反应机制对于有效降解污染物至关重要.

研究的目的:

通过使用N-BC催化PS-AOPs,研究PMS和PDS剂量对双A (BPA) 降解的影响.
阐明在不同氧化剂度下涉及BPA降解的反应途径和机制.
确定PMS和PDS的最佳剂量,以最大限度地提高BPA去除效率.

主要方法:

合成和表征了N-化生物炭 (N-BC).
进行了批量实验,以评估使用N-BC和不同剂量的PMS和PDS评估BPA降解.
使用表征技术和分子模拟,分析了降解动力学,氧化剂利用率和反应途径.

主要成果:

氧化剂的降解率受到氧化剂的类型和剂量的影响.
在较低的PS剂量下,N-BC/PDS的降解率高于N-BC/PMS,这是由于PDS利用率更好,非激进途径的贡献.
在高PS剂量下,N-BC/PMS表现出优异的性能,这是由于N-BC对PMS的吸附能力更高,单片氧气形成增加.

结论:

对于BPA降解的最佳剂量是PMS的1.5mM和PDS的0.1mM.
化生物炭有效催化PS-AOPs,其性能因氧化剂的选择和度而异.
这项研究通过指导氧化剂选择和剂量策略,为优化环境修复中的PS-AOP提供了关键的见解.

关键词:

双 A 是一种双 A.用剂杂的生物炭.过氧化二硫酸盐是什么过氧单硫酸盐的使用硫酸盐的剂量硫酸盐的剂量反应路径的反应路径.

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