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使用甲基硫氧化物 (PMSO) 作为铁基异质催化剂激活硫酸盐工艺中的探针对Fe ((IV) 的量化进行新的洞察

Xiao Wang¹, Wenwen Gong², Jiangwei Zhu³

¹State Key Laboratory of Resource Insects, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China; Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Science, Beijing, 100097, China.

Environmental pollution (Barking, Essex : 1987)

|September 15, 2024

概括

甲基硫氧化物 (PMSO) 在先进的氧化过程中可以检测铁离子 (Fe ((IV)). 这项研究验证了PMSO作为探针,即使其他氧化剂直接将PMSO转化为PMSO2.2,也可以验证.

科学领域:

环境化学环境化学
水处理技术水处理技术
先进的氧化过程先进的氧化过程

背景情况:

铁离子 (Fe(IV)) 是基于铁的先进氧化过程 (AOP) 中的关键中间体.
甲基硫氧化物 (PMSO) 通常被用作检测Fe (IV) 的探针,通过其转化为甲基硫 (PMSO2) 来检测Fe.
其他氧化剂对PMSO的直接氧化可能会干扰Fe (IV) 检测.

研究的目的:

用PMSO作为探针在异质硫酸盐系统中分析Fe(IV) 的稳定状态度.
在各种pH条件下,研究由常见氧化剂 (PMS,NaClO,PI) 直接氧化PMSO.
评估来自不同铁盐和生物质的铁生物炭 (Fe-BC) 在激活硫酸盐对PMSO降解的性能.

主要方法:

采用了一种涉及PMSO,酸 (BA) 和酸 (NB) 在铁基异质酸盐系统中的共降解的探针方法.
在各种pH值范围内对PMSO与PMS,NaClO和PI进行了直接氧化实验.
研究了不同铁盐和生物质来源对Fe-BC催化活性对硫酸盐激活的影响.

主要成果:

证明PMS,NaClO和PI可以直接氧化PMSO到PMSO2,而不依赖于Fe.
量化了这些直接氧化途径对Fe (IV) 测量的影响.
展示了Fe-BC材料在激活硫酸盐对PMSO降解的有效性,根据铁源和生物质类型的变化.

结论:

在异质系统中,PMSO可以作为Fe (IV) 的可靠探测器,只要考虑到其他物种的直接氧化.
这些发现为准确评估复杂AOP中的Fe (IV) 度提供了关键的见解.
优化的铁-生物炭催化剂在环境修复中显示出对高效的硫酸盐激活的希望.

关键词:

铁 (Fe) 是一个物质.异质的异质的异质的这是一个PMSO.PMSO (((2)) 的使用情况.透硫酸盐是一种酸盐.

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