Highly efficient removal and detoxification of phenolic compounds using persulfate activated by MnOx@OMC: Synergistic mechanism and kinetic analysis

Guo, Pu-Can; Qiu, Hai-Bin; Yang, Cheng-Ao; Zhang, Xin; Shao, Xin-Yue; Lai, Yang-Li; Sheng, Guo‐Ping

doi:10.1016/j.jhazmat.2020.123846

Cited by 51 publications

(21 citation statements)

References 48 publications

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“…Characteristic examples are summarized in Table 2. MnO x loaded on ordered mesoporous carbon composites (MnO x @OMC) was found effective for phenol degradation by persulfate activation [10]. Lei et al [13] stated that almost 100% mineralization of 0.1 mM phenol could be achieved in 120 min using 0.3 g/L CuO-Fe 3 O 4 and 5.0 mM SPS at pH 11.0, while Miao et al [20] demonstrated that SrCo 1−x Ti x O 3−δ exhibited a fast catalytic activity for phenol oxidation in the presence of peroxymonosulfate in a wide pH range.…”

Section: Sps Activationmentioning

confidence: 99%

“…SO •− 4 are conventionally produced through energy input in the form of heat or UV irradiation to persulfates, resulting in the fission of O-O bond in their structure and the formation of radicals [9]. Moreover, SO •− 4 can be produced either homogeneously or heterogeneously through reactions with transition metals [10]. In that case, energy requirements are significantly reduced, thus lowering the cost of the treatment.…”

Section: Introductionmentioning

confidence: 99%

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Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

et al. 2020

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In recent years, the presence of pharmaceutically active compounds (PhACs) in surface waters and wastewaters has b the effectiveness of conventional water treatment methods. Towards this direction, advanced oxidation processes (AOPs) for the complete elimination of micro pollutants in waters have become an emerging area of research. The present study reports the heterogeneous activation of sodium persulfate (SPS) by LaNiO3 (LNO) perovskite oxide for the degradation of sulfamethoxazole (SMX), an antibiotic agent. LNO was prepared according to a combustion method, and its physicochemical characteristics were identified by means of XRD, BET, TEM, and SEM/EDS. SMX degradation results showed the great efficiency of LNO for SPS activation. Increasing LNO and SPS dosage up to 250 mg/L enhanced the SMX degradation. In contrast, increasing SMX concentration resulted in longer time periods for its degradation. Considering the pH effect, SMX removal was obstructed under basic conditions, while the efficiency was enhanced at near-neutral conditions. The present system’s activity was also tested for piroxicam (PIR) and methylparaben (MeP) degradation, showing promising results. Unfortunately, experiments conducted in real water matrices such as bottled water (BW) and wastewater (WW), showed that SMX removal was limited to less than 25% in both cases. The hindering effects were mainly attributed to bicarbonate ions and organic matter present in aqueous media. The results obtained using suitable radical scavengers revealed the contribution of both hydroxyl and sulfate radicals in degradation reactions. Finally, LNO exhibited good stability under consecutive experimental runs.

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Section: Sps Activationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

et al. 2020

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“…Several activation techniques have been reported in the literature; PMS and PDS can be activated catalytically with energy or other oxidants [3,32]. The primary purpose of the PDS and PMS activation is to break the (hydro)peroxide (O-O) bond by homolytic or heterolytic cleavage [31].…”

Section: Fundamentalsmentioning

confidence: 99%

“…SR-AOPs have been used in the treatment of different WW to degrade organic pollutants, including pharmaceuticals [58][59][60][61][62], herbicides [33,37], dyes [39] and a number of additives used in the manufacture of plastics [32,55]. Likewise, they have been used for the disinfection of WW with the presence of Escherichia coli and Enterococcus faecalis [8,36].…”

Section: Application Of the Processmentioning

confidence: 99%

“…AOPs are considered as promising and environmentally friendly oxidation technologies [30,31] that are based on the generation of powerful radicals, such as hydroxyl radicals (HO•) [26,32] and sulfate radicals (SO 4 • − ). These radicals can oxidize toxic organic components and pathogens contained in WW [5,12,33] that cannot be degraded in conventional WWTPs [6,26].…”

Section: Introductionmentioning

confidence: 99%

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Advanced Oxidation Processes Based on Sulfate Radicals for Wastewater Treatment: Research Trends

Urán-Duque

Saldarriaga-Molina

Rubio-Clemente

2021

Water

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In this work, the recent trends in the application of the sulfate radical-based advanced oxidation processes (SR-AOPs) for the treatment of wastewater polluted with emerging contaminants (ECs) and pathogenic load were systematically studied due to the high oxidizing power ascribed to these technologies. Additionally, because of the economic benefits and the synergies presented in terms of efficiency in ECs degradation and pathogen inactivation, the combination of the referred to AOPs and conventional treatments, including biological processes, was covered. Finally, the barriers and limitations related to the implementation of SR-AOPs were described, highlighting the still scarce full-scale implementation and the high operating-costs associated, especially when solar energy cannot be used in the oxidation systems.

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Peroxymonosulfate‐Assisted Phenol Degradation via a Magnetic Covalent‐Triazine‐Framework‐Based Photocatalyst

Wang

Cui

et al. 2023

ChemCatChem

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The development of efficient heterostructures combining covalent organic frameworks (COFs) and ideal semiconductors can significantly improve photocatalytic performance for pollutant degradation. Herein, we present the design, synthesis, and characterization of a core‐shell‐structured nanocomposite comprising covalent triazine framework‐encased Fe3O4 magnetic particles employed as a heterojunction photocatalyst for activating peroxymonosulfate (PMS) in phenol degradation. The distinctive internal structure between the TpMa shell (Tp=2,4,6‐trihydroxy‐1,3,5‐benzenetricarboxaldehyde, Ma=melamine) and the Fe3O4 core (Fe3O4@TpMa) facilitated charge transfer and accelerated charge separation. Furthermore, PMS served as an electron acceptor, enhancing photogenerated charge separation and maximizing the production of reactive oxygen species. The Fe3O4@TpMa/PMS system demonstrated remarkable photocatalytic performance and stability, achieving complete phenol degradation (10 mg L−1) in 40 min. The exceptional photocatalytic activity resulted from the synergistic effect of ⋅OH, SO4⋅−, O2⋅−, 1O2, and h+ generated in the Fe3O4@TpMa/PMS system during the degradation process. Overall, this material offers excellent potential for solar‐driven pollutant degradation and enables the development of COF‐based materials for wastewater treatment applications.

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Highly efficient removal and detoxification of phenolic compounds using persulfate activated by MnOx@OMC: Synergistic mechanism and kinetic analysis

Cited by 51 publications

References 48 publications

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

Advanced Oxidation Processes Based on Sulfate Radicals for Wastewater Treatment: Research Trends

Peroxymonosulfate‐Assisted Phenol Degradation via a Magnetic Covalent‐Triazine‐Framework‐Based Photocatalyst

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