Degradation of phosphonates in Co(II)/peroxymonosulfate process: Performance and mechanism

Zhu, Jinglin; Shu, Wang; Li, Hongchao; Qian, Jieshu; Lv, Lu; Pan, Bo

doi:10.1016/j.watres.2021.117397

Cited by 90 publications

(34 citation statements)

References 71 publications

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“…This Mn(II)/O 2 system is also applicable to the oxidation of tetracyclines. 130 Besides PDS and O 2 , recent studies in our group show that other mild oxidants like H 2 O 2 and persulfate (PMS) could be used to oxidize phosphonates in the presence of Co(II) 131 and Cu(II). 132 Similar processes also occur in the heterogeneous oxidation systems (Figure 3d).…”

Section: Modulating the Photochemical Activity Viamentioning

confidence: 99%

Toward Selective Oxidation of Contaminants in Aqueous Systems

Yang

Qian

Shan

et al. 2021

Environ. Sci. Technol.

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208

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The presence of diverse pollutants in water has been threating human health and aquatic ecosystems on a global scale. For more than a century, chemical oxidation using strongly oxidizing species was one of the most effective technologies to destruct pollutants and to ensure a safe and clean water supply. However, the removal of increasing amount of pollutants with higher structural complexity, especially the emerging micropollutants with trace concentrations in the complicated water matrix, requires excessive dosage of oxidant and/ or energy input, resulting in a low cost-effectiveness and possible secondary pollution. Consequently, it is of practical significance but scientifically challenging to achieve selective oxidation of pollutants of interest for water decontamination. Currently, there are a variety of examples concerning selective oxidation of pollutants in aqueous systems. However, a systematic understanding of the relationship between the origin of selectivity and its applicable water treatment scenarios, as well as the rational design of catalyst for selective catalytic oxidation, is still lacking. In this critical review, we summarize the state-of-the-art selective oxidation strategies in water decontamination and probe the origins of selectivity, that is, the selectivity resulting from the reactivity of either oxidants or target pollutants, the selectivity arising from the accessibility of pollutants to oxidants via adsorption and size exclusion, as well as the selectivity due to the interfacial electron transfer process and enzymatic oxidation. Finally, the challenges and perspectives are briefly outlined to stimulate future discussion and interest on selective oxidation for water decontamination, particularly toward application in real scenarios.

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Section: Modulating the Photochemical Activity Viamentioning

confidence: 99%

Toward Selective Oxidation of Contaminants in Aqueous Systems

Yang

Qian

Shan

et al. 2021

Environ. Sci. Technol.

Self Cite

208

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“…Thus, low and high valence metals were activated by PMS and converted to each other to form a cyclic system. The SO 4 c À could be converted into cOH and SO 5 c À through the reactions of eqn (10) and (11), thus increasing the content of cOH and SO 5 c À in the system. Simultaneously, cOH and SO 5 c À could generate 1 O 2 (eqn (20) and ( 21)), 11,58 which is the main active species for AO7 degradation, via the quenching experiment and EPR verication.…”

Section: Cnmp Mechanism Discussionmentioning

confidence: 99%

“…[6][7][8][9] Due to the higher energy consumption of ultrasonic, UV and heat activation processes, however, transition metal activation, which is also more economical, has become the preferred activation method. Previous studies have shown cobalt to be the most effective transition metal catalyst for PMS activation, [10][11][12] but it is expensive and potentially carcinogenic. Therefore, the development of low-cost, eco-friendly and effective non-cobalt-based catalysts is essential.…”

Section: Introductionmentioning

confidence: 99%

Thermal activation significantly improves the organic pollutant removal rate of low-grade manganese ore in a peroxymonosulfate system

Chen

Yin²,

Dong

et al. 2022

RSC Adv.

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“…Appropriate activation of PMS and PDS to give ROS is imperative to ensure the desired oxidation performance, since PMS and PDS react directly with the organic contaminants only at a low rate. 89 They can be activated with metal catalysts, 90 carbon nanotubes, 91 biochars, 92 TMO, 93 etc.…”

Section: Generation Of Reactive Oxygen Speciesmentioning

confidence: 99%