Investigation of iohexol degradation kinetics by using heat-activated persulfate

Hu, Chen-Yan; Hou, Yuan-Zhang; Lin, Yi-Li; Deng, Yan-Guo; Hua, Shuang-Jing; Du, Yifan; Chen, Chiu-Wen; Wu, Chung‐Hsin

doi:10.1016/j.cej.2019.122403

Cited by 73 publications

(18 citation statements)

References 71 publications

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“…The degradation efficiency reached 42.6%, 51.8%, 57.9% in 10 min, and the kinetic rate increased from 5.55 Â 10 À2 min À1 to 8.65 Â 10 À2 min À1 . In general, the temperature can promote the degradation of CIP, for heating can decompose PDS into SO 4 À• and • OH through thermolytic cleavage of O-O bond (Hu et al 2019).…”

Section: Effect Of Operational Factorsmentioning

confidence: 99%

“…It is reported that there are many ways to effectively activate persulfate (peroxymonosulfate/peroxydisulfate), heat (Hu et al 2019), ultrasound (Kermani et al 2020), transition ions (Guo et al 2020), ultraviolet radiation (Hsieh et al 2021), electrolysis-activated (Wang et al 2021), but as a homogeneous activation system these methods require more energy consumption. It is found that magnesium ferrite lack of the above mentioned disadvantage and had enhanced catalytic performance for pharmaceutical products and organic dyes mineralization (Ivanets et al 2020(Ivanets et al , 2021.…”

Section: Introductionmentioning

confidence: 99%

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Insight into the performance and mechanism of magnetic Ni0.5Cu0.5Fe2O4 in activating peroxydisulfate for ciprofloxacin degradation

Wang

et al. 2022

Water Science and Technology

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Magnetic nickel-copper ferrite (NixCuyFe2O4) nano-catalyst was synthesized by co-precipitation method, and it exhibited excellent ability for activating peroxydisulfate (PDS) in the degradation of ciprofloxacin (CIP). As-prepared Ni0.5Cu0.5Fe2O4 properties were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscope equipped with an energy-dispersive X-ray (SEM-EDX), transmissions electron microscopy (TEM), N2 adsorption-desorption isotherm plot of Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH), vibrating sample magnetometer (VSM). The maximum degradation efficiency is 80.2% by using 0.500 g/L of Ni0.5Cu0.5Fe2O4 for activating 5.00 mmol/L of PDS to degrade CIP (20.0 mg/L) at 25 ± 2 °C for 50 min (pH = 6.00). The presence of interfering ions Cl−, NO3−, and HCO3− inhibited the reaction by producing reactive species with low oxidation potential, inducing the degradation efficiency decreased down to 60.0%, 58.1% and 21.5% respectively. Ni0.5Cu0.5Fe2O4 displayed great magnetic separation characteristic for the satisfactory magnetization saturation value is ∼8.6 emu/g. The degradation efficiency of recycled samples is no significant difference after using for three times, which is about 60%, indicating that Ni0.5Cu0.5Fe2O4 is a reusability catalyst in activating PDS for CIP degradation. This work might provide an efficient and promising approach to construct recyclable magnetic materials that can be used for wastewater treatment.

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Section: Effect Of Operational Factorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insight into the performance and mechanism of magnetic Ni0.5Cu0.5Fe2O4 in activating peroxydisulfate for ciprofloxacin degradation

Wang

et al. 2022

Water Science and Technology

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“…Iodinated X-ray contrast media (ICM), mainly constituted by 2,4,6-triiodinated benzoic acid derivatives, are pharmaceutical products used in medicine in large quantities to allow better visualization of blood vessels and organs during diagnosis [1]. After injection, ICMs are almost completely ejected from the human body within 24h [2]. Thus, ICMs are detected in water samples at concentrations ranging from ng L -1 to μg L -1 [1].…”

Section: Introductionmentioning

confidence: 99%

Electrooxidation of Iohexol in Its Commercial Formulation Omnipaque on Boron Doped Diamond Electrode

Jocelin

Ollo²,

Sylvestre

et al. 2021

IRJPAC

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This study investigated the electrochemical behavior of iohexol in its commercial formulation omnipaque on a boron-doped diamond electrode using cyclic voltammetry and chronoamperometry. The dependence of the anodic peak current density vs. iohexol concentration is linear and can be applied to the determination of the substrate concentration in environmental samples and pharmaceuticals. The iohexol electrooxidation on boron-doped diamond electrode is diffusion-controlled process and proceed via two ways: a direct electron transfers at the surface of boron-doped diamond electrode and an indirect oxidation mediated by in situ oxidative species. The iohexol electrooxidation in pH range from 2 to 6 includes exchange of 4 electrons and 1 proton, at pH superior to 6 it includes an exchanged of 2 electrons and 1 proton. The values of activation energy, anodic transfer coefficient, heterogenous rate constant, diffusion coefficient and the catalytic rate constant were 14.164 kJ mol-1, 0.428, 1.06 s-1, 4.47 cm2 s-1 and 3.61 M-1 s-1 respectively. It appears from those results that, on our electrode, for the high potential scan rates, few actives sites mainly those located at the electrode surface are involved in the iohexol oxidation process. As the potential scan rate decreases, more actives sites are involved in the process.

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“…The U.S. Environmental Protection Agency (USEPA) has recommended water quality criteria in the range of 0.04-1800 µg/L for different CPs [17]. As such, their efficient removal by advanced treatment methods remains a prime issue and challenging task.In the last three decades, advanced oxidation processes (AOPs) based on in situ formation of reactive species (free radicals) have been applied for the efficient degradation and detoxification of organic and inorganic compounds including industrial micropollutants [1,2,[18][19][20][21][22][23]. The most frequently used AOPs are enhanced ozonation [24], photocatalysis [2,18], the Fenton's reagent [25], the photo-Fenton processes [18,26], electrochemical degradation [27], sonolysis [28], microwave irradiation [29], wet air oxidation [30], electrohydraulic discharge (plasma) [31] and their combinations [32].…”

mentioning

confidence: 99%

“…Usually, SO 4 •can be produced by activation of persulfate (PS) and peroxymonosulfate (PMS) with ultraviolet (UV) irradiation [37], heat [21], ascorbic acid [22], metal oxides [20], transition metal ions (Me n+ ) [38] and zero-valent metals [39]. Particularly the use of zero-valent iron (ZVI) and aluminium (ZVA) has recently received great attention due to their unique surface properties, high abundance in the earth's crust and high reactivity.…”

mentioning

confidence: 99%

Treatment of industrial contaminants with zero-valent iron- and zero-valent aluminium- activated persulfate: a case study with 3,5-dichlorophenol and 2,4-dichloroaniline

et al. 2021

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Zero-valent iron (ZVI)- and zero-valent aluminium (ZVA)-activated persulfate (PS) oxidation procedure was applied to remove the industrial pollutants 3,5-dichlorophenol (3,5-DCP; 12.27 µM) and 2,4-dichloroaniline (2,4-DCA; 12.34 µM) from aqueous solutions. The effects of PS concentration and pH were investigated to optimize heterogeneous treatment systems. Negligible removals were obtained for both pollutants by individual applications of nanoparticles (1 g/L) and PS (1.00 mM). PS activation with ZVI resulted in 59% (1.00 mM PS; 1 g/L ZVI; pH 5.0; 120 min) and 100% (0.75 mM PS; 1 g/L ZVI; pH 5.0; 80 min) 3,5-DCP and 2,4-DCA removals, respectively. The ZVA/PS treatment system gave rise to only 31% 3,5-DCP (1.00 mM PS; 1 g/L ZVA; pH 3.0; 120 min) and 47% 2,4-DCA (0.25 mM PS; 1 g/L ZVA; pH 3.0; 120 min) removals. The pH decreases from 5.0 to 3.0 and from 3.0 to 1.5 enhanced contaminant removals for ZVI/PS and ZVA/PS treatments, respectively. Pollutant removal rates were in correlation with the consumption rates of the oxidants. Metal ion (Al, Fe) release increased in the presence of PS and with decreasing pH.

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Investigation of iohexol degradation kinetics by using heat-activated persulfate

Cited by 73 publications

References 71 publications

Insight into the performance and mechanism of magnetic Ni0.5Cu0.5Fe2O4 in activating peroxydisulfate for ciprofloxacin degradation

Insight into the performance and mechanism of magnetic Ni0.5Cu0.5Fe2O4 in activating peroxydisulfate for ciprofloxacin degradation

Electrooxidation of Iohexol in Its Commercial Formulation Omnipaque on Boron Doped Diamond Electrode

Treatment of industrial contaminants with zero-valent iron- and zero-valent aluminium- activated persulfate: a case study with 3,5-dichlorophenol and 2,4-dichloroaniline

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