Catalytic activation of peroxymonosulfate using CeVO4 for phenol degradation: An insight into the reaction pathway

Othman, Israa; Zain, Jerina Hisham; Haija, Mohammad Abu; Banat, Fawzi

doi:10.1016/j.apcatb.2020.118601

Cited by 165 publications

(50 citation statements)

References 76 publications

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“…Additionally, Figure 7(b) indicated that the oxidation reaction of ethylbenzene conformed to the pseudo‐first‐order kinetics behavior at different reaction temperature, and the values of rate constant ( k ) exhibited a linear increase with the reaction temperature increased (Table S2). This is due to the fact that higher temperatures would promote TBHP activation by Fe/SNC catalysts to generate more reactive oxygen and thus raise the catalytic reaction efficiency 51 . The Fe/SNC catalytic oxidation of ethylbenzene was also discussed under different initial concentrations of ethylbenzene ranging from 0.1 to 0.5 mmol.…”

Section: Resultsmentioning

confidence: 99%

“…This is due to the fact that higher temperatures would promote TBHP activation by Fe/SNC catalysts to generate more reactive oxygen and thus raise the catalytic reaction efficiency. 51 The Fe/SNC catalytic oxidation of ethylbenzene was also discussed under different initial concentrations of ethylbenzene ranging from 0.1 to 0.5 mmol. At 0.5 mmol of ethylbenzene, a conversion of 61% was achieved after 36 h with k = 0.0258 h −1 while complete conversion was observed for 0.1 mmol ethylbenzene with k = 0.0843 h −1 as displayed in Figure 7 the limited catalytic active sites at higher concentrations of ethylbenzene, and thus the reaction proceeded more slowly (Table S2).…”

Section: Catalytic Testingmentioning

confidence: 99%

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Quasi‐continuous synthesis of iron single atom catalysts via a microcapsule pyrolysis strategy

Huang

et al. 2021

AIChE Journal

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Single atom catalysts (SACs), featured with atomically dispersed metal species, have been considered as one of the most promising catalytic materials because of the excellent performance in various high-value-added reactions. However, the largescale and continuous-type production of such SACs is still challenging. Herein, a novel and facile microcapsule strategy for the quasi-continuous synthesis of iron

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Section: Resultsmentioning

confidence: 99%

Section: Catalytic Testingmentioning

confidence: 99%

Quasi‐continuous synthesis of iron single atom catalysts via a microcapsule pyrolysis strategy

Huang

et al. 2021

AIChE Journal

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“…•− to be the significant reactive species participating in PN degradation by the PMS oxidant with additional catalysts such as CeVO 4 , coal-fly-ash-supported Co 3 O 4 , and α-Mn 2 O 3 [44][45][46]. This discrepancy can be attributed to the inhibition of the catalytic capability of metal oxides owing to the presence of borate buffer solution.…”

Section: Identification Of the Major Reactive Species In Pms Oxidation Systems In The Presence Of Metal Oxides And Borate Buffermentioning

confidence: 99%

Role of Borate Buffer in Organic Degradation by Peroxymonosulfate in the Presence of Metal Oxides

Park

Kim

2021

Water

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The effects of borate ions on the reactivity of peroxymonosulfate (PMS) during organic degradation in the presence of metal oxides were examined. The metal oxides exhibited catalytic abilities for the degradation of carbamazepine (CBZ) but not for phenol (PN). Scavenging experiments revealed the absence of radical generation during PN degradation in the presence of the various metal oxides and borate buffer. This indicated that the borate buffer hindered the catalytic abilities of the metal oxides for producing radicals via the PMS oxidant, especially during the faster degradation of compounds such as PN. Various concentrations of borate ions were assessed for enabling pH control and permitting catalytic activity. Fe2O3 was found to accelerate and inhibit PN degradation at borate-ion concentrations of 2 mM and 5–20 mM, respectively. Only the 20 mM borate-ion solutions were successful at maintaining the initial pH for 2 d. Phosphate buffer, which was examined as an alternative, also disrupted radical formation but not as considerably as that of the borate ions with metal oxides. This study demonstrates the significance of enabling pH control and permitting the catalytic activity for ensuring the effective use of oxyanions as buffers.

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“…Wastewater from various industries, including oil re neries, coke, paper, textiles, and petrochemical industries, contains phenol and its derivatives (Ganguly et al 2020). Phenolic compounds are chemically stable and soluble in water (Honarmandrad et al 2021, Othman et al 2020). These compounds pose very serious risks to human health and the environment, so they must be properly disposed before discharge into the environment (Honarmandrad et al 2021, Mady et al 2019.…”

Section: Introductionmentioning

confidence: 99%

“…Drinking phenol-containing water can disrupt the sleep system, damage the kidneys and pancreas, damage the central nervous system, and possibly cause cancer in humans (Al Bsoul et al 2021). Given the importance of phenol on human health and the environment, the US Environmental Protection Agency has set a maximum concentration of phenol in industrial e uents for discharge to surface water sources of 1 mg/L (Ganguly et al 2020, Othman et al 2020.…”

Section: Introductionmentioning

confidence: 99%

Application of Pier Waste Sludge for Catalytic Activation of Proxy-monosulfate and Phenol Elimination From a Petrochemical Wastewater

Khoshtinat

Tabatabaie

Ramavandi

et al. 2021

Preprint

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This investigation aimed to remove phenol from a real wastewater (taken from a petrochemical company) by activating peroxy-monosulfate (PMS) using catalysts extracted from pier waste sludge. The physical and chemical properties of the catalyst were evaluated by FE-SEM/EDS, XRD, FTIR, and TGA/DTG tests. The functional groups of O-H, C-H, CO32-, C-H, C-O, N-H, and C-N were identified on the catalyst surface. Also, the crystallinity of the catalyst before and after reaction with petrochemical wastewater was 103.4 nm and 55.8 nm, respectively. Operational parameters of pH (3-9), catalyst dose (0-100 mg/L), phenol concentration (50-250 mg/L), and PMS concentration (0-250 mg/L) were tested to remove phenol. The highest phenol removal rate (94%) was obtained at pH=3, catalyst dose of 80 mg/L, phenol concentration of 50 mg/L, PMS concentration of 150 mg/L, and contact time of 150 min. Phenol decomposition in petrochemical wastewater followed the first-order kinetics (k> 0.008 min-1, R2> 0.94). Based on the reported results, it was found that the pH factor is more important than other factors in phenol removal. The catalyst stability test was performed for up to five cycles and phenol removal in the fifth cycle was reduced to 42%. Also, the energy consumption in this study was 77.69 kw.h/m3. According to the results, the pier waste sludge catalyst/PMS system is a critical process for eliminating phenol from petrochemical wastewater.

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Catalytic activation of peroxymonosulfate using CeVO4 for phenol degradation: An insight into the reaction pathway

Cited by 165 publications

References 76 publications

Quasi‐continuous synthesis of iron single atom catalysts via a microcapsule pyrolysis strategy

Quasi‐continuous synthesis of iron single atom catalysts via a microcapsule pyrolysis strategy

Role of Borate Buffer in Organic Degradation by Peroxymonosulfate in the Presence of Metal Oxides

Application of Pier Waste Sludge for Catalytic Activation of Proxy-monosulfate and Phenol Elimination From a Petrochemical Wastewater

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