Enhanced Degradation of Micropollutants in a Peracetic Acid/Mn(II) System with EDDS: An Investigation of the Role of Mn Species

Dong, Jie; Dong, Haoran; Xiao, Junyang; Li, Long; Huang, Daofen; Zhao, Mengxi

doi:10.1021/acs.est.4c00901

Environ. Sci. Technol.

2024

DOI: 10.1021/acs.est.4c00901

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Enhanced Degradation of Micropollutants in a Peracetic Acid/Mn(II) System with EDDS: An Investigation of the Role of Mn Species

Jie Dong,

Haoran Dong,

Junyang Xiao

et al.

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2024

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Cited by 6 publications

References 63 publications

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Enhanced fenton-like rate and anti-interference through designing materials with specific excellent sorption to pollutant

Cao,

Zhang,

Wei

2024

Chemical Engineering Journal

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Enhanced fenton-like rate and anti-interference through designing materials with specific excellent sorption to pollutant

Cao,

Zhang,

Wei

2024

Chemical Engineering Journal

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Picolinic acid-mediated Mn(II) activated periodate for ultrafast and selective degradation of emerging contaminants: Key role of high-valent Mn-oxo species

Shi,

Zhang,

Zhao

et al. 2024

Water Research

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Highly Efficient Degradation of Emerging Contaminants with Sodium Bicarbonate-Enhanced Mn(II)/Peracetic Acid Process: Formation and Contribution of Mn(V)

He,

Zou,

et al. 2024

Environ. Sci. Technol.

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Organic ligands have been extensively used to enhance the catalytic performance of manganese ion (Mn(II)) for peracetic acid (PAA). In this study, sodium bicarbonate (NaHCO 3 ), an economical and eco-friendly inorganic ligand, was introduced to enhance the degradation of emerging contaminants (ECs) in the Mn(II)/PAA process. NaHCO 3 could significantly improve the oxidizing ability of the Mn(II)/PAA process over the initial pH range of 3.0−11.0. Mn(V) was identified as the primary reactive species for degrading naproxen in the NaHCO 3 /Mn(II)/PAA process. HCO 3 − could complex with Mn(II) to generate Mn(II)-HCO 3 − , which has a lower redox potential to enhance the catalytic activity of Mn(II). Mn(II)-HCO 3 − reacted with PAA to produce Mn(III)-HCO 3 − and CH 3 C(O)O • . Mn(V)-HCO 3 − was generated via two-electron transfer between Mn(III)-HCO 3 − and PAA. Although organic radicals were detected in the NaHCO 3 /Mn(II)/PAA process, naproxen was mainly degraded by Mn(V)-HCO 3 − via one-electron transfer along with the formation of MnO 2 . Notably, the coexisting hydrogen peroxide was vital in the reduction of MnO 2 to Mn(II/III), thereby enhancing the continuous generation of Mn(V)-HCO 3 − . NaHCO 3 /Mn(II)/PAA process exhibited exceptional oxidation performance in actual water samples. This study proposed a strategy utilizing an eco-friendly inorganic ligand to address the inherent drawbacks of organic ligand-enhanced Mn(II)/PAA processes and highlighted its potential applications in the removal of ECs.

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Enhanced Degradation of Micropollutants in a Peracetic Acid/Mn(II) System with EDDS: An Investigation of the Role of Mn Species

Cited by 6 publications

References 63 publications

Enhanced fenton-like rate and anti-interference through designing materials with specific excellent sorption to pollutant

Enhanced fenton-like rate and anti-interference through designing materials with specific excellent sorption to pollutant

Picolinic acid-mediated Mn(II) activated periodate for ultrafast and selective degradation of emerging contaminants: Key role of high-valent Mn-oxo species

Highly Efficient Degradation of Emerging Contaminants with Sodium Bicarbonate-Enhanced Mn(II)/Peracetic Acid Process: Formation and Contribution of Mn(V)

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