Efficient removal of bisphenol A by superoxide radical and singlet oxygen generated from peroxymonosulfate activated with Fe0-montmorillonite

Yang, Shanshan; Wu, Pingxiao; Liu, Junqin; Chen, Meiqing; Ahmed, Zubair; Zhu, Nengwu

doi:10.1016/j.cej.2018.04.175

Cited by 311 publications

(57 citation statements)

References 59 publications

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“…The newly formed surface composite layer mediates PMS decomposition to a new pathway with production of 1 O 2 and O 2 •− . Yang et al obtained the same results that 1 O 2 and O 2 •− were dominant species and coexisted with • OH in the Fe 0 -montmorillonite/PMS system [ 91 ]. Montmorillonite would alter the Fe 0 surface oxidation layer which may affect the activation process [ 92 ].…”

Section: Evolution Of 1 O 2 mentioning

confidence: 85%

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Xiao

Faheem

et al. 2021

IJERPH

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Advanced oxidation processes (AOPs) based on peroxydisulfate (PDS) or peroxymonosulfate (PMS) activation have attracted much research attention in the last decade for the degradation of recalcitrant organic contaminants. Sulfate (SO4•−) and hydroxyl (•OH) radicals are most frequently generated from catalytic PDS/PMS decomposition by thermal, base, irradiation, transition metals and carbon materials. In addition, increasingly more recent studies have reported the involvement of singlet oxygen (1O2) during PDS/PMS-based AOPs. Typically, 1O2 can be produced either along with SO4•− and •OH or discovered as the dominant reactive oxygen species (ROSs) for pollutants degradation. This paper reviews recent advances in 1O2 generation during PDS/PMS activation. First, it introduces the basic chemistry of 1O2, its oxidation properties and detection methodologies. Furthermore, it elaborates different activation strategies/techniques, including homogeneous and heterogeneous systems, and discusses the possible reaction mechanisms to give an overview of the principle of 1O2 production by activating PDS/PMS. Moreover, although 1O2 has shown promising features such as high degradation selectivity and anti-interference capability, its production pathways and mechanisms remain controversial in the present literatures. Therefore, this study identifies the research gaps and proposes future perspectives in the aspects of novel catalysts and related mechanisms.

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Section: Evolution Of 1 O 2 mentioning

confidence: 85%

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Xiao

Faheem

et al. 2021

IJERPH

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“…Sorption affects the mobility and bioavailability of organic pollutants in soils (Alexander, 1994; Warren et al , 2003; Yang et al , 2020a, 2020b). It depends on the overall soil structure and the presence of clay minerals, the nature of the pollutant and physicochemical conditions (notably pH and humidity) (Nam et al , 2003; Kah & Brown, 2006; Yang et al , 2018; Chen et al , 2020b; Liu et al , 2020; Yang et al , 2020b; Ye et al , 2020). The increase in retention on the porous solid phase of the soil reduces dispersion risk for these pollutants (Chen et al , 2020a; Yang et al , 2020a), but can in turn make it difficult for microbial agents present in the soil to remove them (Kah & Brown, 2006; An et al , 2017).…”

mentioning

confidence: 99%

Study of interactions between rhodamine B and a beidellite-rich clay fraction

2020

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The interaction between a basic dye, rhodamine B, and a separated fine fraction from natural clay was studied. Chemical analysis, X-ray diffraction and Fourier-transform infrared spectroscopy confirmed the predominance of beidellite in the fine clay fraction. The interaction of rhodamine B with the fine clay fraction showed that sorption was fast and followed a pseudo-second-order kinetic model. The comparison between sorbed rhodamine B amounts as a function of the various experimental parameters such as pH, sorbent mass, dye concentration and the presence of competing ions suggests that: (1) the sorption process is largely pH-dependent; (2) significant competition is observed between the dye and the Ca2+ and Mg2+ ions; (3) the sorption proceeds, principally, by a cation-exchange mechanism; and (4) the sorption capacity of the fine fraction in the presence of competing cations such as Ca2+ is ~0.28 mmol g–1.

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“…5(a) shows that the six characteristic peaks of DMPO-HO 2 were only obtained in methanol solvent for the ZVI/ Cu-PMS system, conrming the formation of O 2 c À during the reaction. 42 Based on the mechanism of O 2 c À formation in previous studies, 32,42,43 we speculated that O 2 c À generation in the ZVI/M-PMS system (M represents Cu, Co, Ni and Ag) follows eqn (1)- (7). As shown in Fig.…”

Section: Characterization Of Bimetallic Powders As Shown Inmentioning

confidence: 83%

Removal of contaminants by activating peroxymonosulfate (PMS) using zero valent iron (ZVI)-based bimetallic particles (ZVI/Cu, ZVI/Co, ZVI/Ni, and ZVI/Ag)

et al. 2020

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Efficient removal of bisphenol A by superoxide radical and singlet oxygen generated from peroxymonosulfate activated with Fe0-montmorillonite

Cited by 311 publications

References 59 publications

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review

Study of interactions between rhodamine B and a beidellite-rich clay fraction

Removal of contaminants by activating peroxymonosulfate (PMS) using zero valent iron (ZVI)-based bimetallic particles (ZVI/Cu, ZVI/Co, ZVI/Ni, and ZVI/Ag)

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