Development of CuO coated ceramic hollow fiber membrane for peroxymonosulfate activation: a highly efficient singlet oxygen-dominated oxidation process for bisphenol a degradation

Wang, Songxue; Tian, Jiayu; Qiao, Wei; Xiao, Feng; Gao, Shanshan; Shi, Wenxin; Cui, Fuyi

doi:10.1016/j.apcatb.2019.117783

Cited by 249 publications

(45 citation statements)

References 59 publications

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“…In previous studies inform the literature, the degradation efficiency of BPA decreased from 78% to 52% with the addition of 10 mg/L HA in a CuO/PMS system [54] and from 88% to 59% with the addition of 5 mg/L HA in a MnFe 2 O 4 /PMS system [19]. The inhibitory effect of HA can be primarily attributed to its competition with BPA for ROS during the oxidation process and its competitive adsorption on the catalyst surface to occupy the accessible active sites for PMS [55].…”

Section: Effects Of Ha and Bpa Initial Concentrationsmentioning

confidence: 81%

“…Moreover, hydroxyl groups on the surface of the Mn 2 O 3 can activate PMS to generate reactive radicals [69]. It has been reported that O ads is associated with defect sites (oxygen vacancies, O vac ) with low oxygen coordination [13,54,70]. Oxygen vacancy concentration is reflected by the XPS peak area ratio (R) of O ads to O latt [71].…”

Section: Roles Of Manganese and Oxygen Speciesmentioning

confidence: 99%

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A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

Chen

Hou

et al. 2021

Catalysts

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Catalytic performances of Mn2O3 nanoparticles for peroxymonosulfate (PMS) activation in bisphenol A (BPA) degradation were comprehensively investigated in this study. Experimental results showed that 10 mg/L BPA could be 100% degraded within 20 min with the dosages of 0.2 g/L Mn2O3 and 0.1 mM PMS. Moreover, Mn2O3 showed remarkable activity in activation of PMS and excellent adaptability in various real water matrices, including river water, tap water and secondary effluents. Based on the radical detection and scavenging experiments, it was found that both radical and non-radical oxidation contributed to the degradation of BPA and 1O2 was the dominant species in the degradation compared to •OH, SO4•− and O2•−. A total of 15 transformation products were identified by LC/MS-MS during BPA degradation in the Mn2O3/PMS system, and degradation pathways via three routes are proposed. Compared with lab-made catalysts reported in the literature, the Mn2O3 catalyst demonstrated its superiority in terms of its high TOC removal, low PMS consumption and fast degradation rate for BPA.

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Section: Effects Of Ha and Bpa Initial Concentrationsmentioning

confidence: 81%

Section: Roles Of Manganese and Oxygen Speciesmentioning

confidence: 99%

A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

Chen

Hou

et al. 2021

Catalysts

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“…Accordingly, it is reasonable to believe that the generation process of active species could be related to the redox reaction between Cu(II)/Cu(I) based on previous reports on CuFe 2 O 4 . 36 , 38 , 48 , 49 The possible generation mechanism of ROS in the CuAl 2 O 4 /PMS system can be depicted as follows To determine the reactive sites and verify the above hypothesis, the surface characteristics of the used CuAl 2 O 4 were characterized by XPS analysis, and the results are presented in Figure 7 . In the high-resolution XPS spectra of Cu 2p, the signal could be divided into six peaks at around 932.8, 934.5, 941.6, 943.7, 952.6, and 954.2 eV.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Oxidation and Sequestration of Arsenic(III) from Aqueous Solution by Copper Aluminate with Peroxymonosulfate: A Fast and Efficient Heterogeneous Process

Liu

Yang

et al. 2021

ACS Omega

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The major problem in arsenic (As(III)) removal using adsorbents is that the method is time-consuming and inefficient owing to the fact that most of the adsorbents are more effective for As(V). Herein, we report a new discovery regarding the significant simultaneous oxidation and sequestration of As(III) by a heterogeneous catalytic process of copper aluminate (CuAl 2 O 4 ) coupled with peroxymonosulfate (PMS). Oxidation and adsorption promote each other. With the help of the active radicals, the As(III) removal efficiency can be increased from 59.4 to 99.2% in the presence of low concentrations of PMS (50 μM) and CuAl 2 O 4 (300 mg/L) in solution. CuAl 2 O 4 /PMS can work effectively in a wide pH range (3.0−9.0). Other substances, such as nitrate, sulfate, chloride, carbonate, and humic acid, exert an insignificant effect on As(III) removal. Based on X-ray photoelectron spectroscopy (XPS) analysis, the exposed reductive copper active sites might drive the redox reaction of Cu(II)/Cu(I), which plays a key role in the decomposition of PMS and the oxidation of As(III). The exhausted CuAl 2 O 4 could be refreshed for cycling runs with insignificant capacity loss by the combined regeneration strategy because of the stable spinel structure. According to all results, the CuAl 2 O 4 /PMS with favorable oxidation ability and stability could be employed as a promising candidate in real As(III)-contaminated groundwater treatment.

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“…The continuous consumption of quantitative ROS (1.5 mM PMS) caused the incomplete removal of high BPS concentrations. 29 At higher initial BPS dosages, the lower ratio of ROS to BPS provided less probability for BPS molecules being attacked by ROS, which led to lower k obs values. 30 In addition, as the initial concentration of BPS increased, degradation products would also increase, which increased the competition for ROS.…”

Section: Inuence Of Initial Bps Concentrationmentioning

confidence: 97%

Ca(OH)₂-mediated activation of peroxymonosulfate for the degradation of bisphenol S

Lin

Zhang

et al. 2021

RSC Adv.

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Development of CuO coated ceramic hollow fiber membrane for peroxymonosulfate activation: a highly efficient singlet oxygen-dominated oxidation process for bisphenol a degradation

Cited by 249 publications

References 59 publications

A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

Simultaneous Oxidation and Sequestration of Arsenic(III) from Aqueous Solution by Copper Aluminate with Peroxymonosulfate: A Fast and Efficient Heterogeneous Process

Ca(OH)₂-mediated activation of peroxymonosulfate for the degradation of bisphenol S

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Development of CuO coated ceramic hollow fiber membrane for peroxymonosulfate activation: a highly efficient singlet oxygen-dominated oxidation process for bisphenol a degradation

Cited by 249 publications

References 59 publications

A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

Simultaneous Oxidation and Sequestration of Arsenic(III) from Aqueous Solution by Copper Aluminate with Peroxymonosulfate: A Fast and Efficient Heterogeneous Process

Ca(OH)2-mediated activation of peroxymonosulfate for the degradation of bisphenol S

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Ca(OH)₂-mediated activation of peroxymonosulfate for the degradation of bisphenol S