Fenton-like catalytic oxidation of tetracycline by AC@Fe3O4 as a heterogeneous persulfate activator: Adsorption and degradation studies

Jafari, Ahmad Jonidi; Kakavandi, Babak; Jaafarzadeh, Neemat; Kalantary, Roshanak Rezaei; Ahmadi, Mehdi; Babaei, Ali Akbar

doi:10.1016/j.jiec.2016.09.044

Cited by 238 publications

(42 citation statements)

References 30 publications

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“…Indeed, the iron mass contents of 1.6%, 2.2% and 3.3% in AC@Fe/1, AC@Fe/2 and AC@Fe/3, respectively, determined by dissolution and atomic absorption are in agreement with the ones found by XPS analysis. These results are in agreement with previous work showing a reduction in the specific surface area of the porous material in which nanoparticles were dispersed (Duarte et al 2012;Jonidi Jafari et al 2017;Liu et al 2017).…”

Section: Characterization Of Ac and Heterogeneous Catalystssupporting

confidence: 93%

“…Indeed, Ramirez et al (2007) reported that the mesopores are more accessible to macromolecules such as dyes, while the micropores are easily accessible to the H 2 O 2 . In addition, previous studies have shown that catalyst having appropriate PSD can accelerate the degradation speed of the pollutant (Jonidi Jafari et al 2017;Liu et al 2017;Zhou et al 2014). The efficiency of our prepared catalyst is thus attributed to its mesoporous/microporous PSD.…”

Section: Figmentioning

confidence: 69%

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Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

et al. 2019

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Iron-based nanoparticles were formed in the pores of a micro-and mesoporous activated carbon made from banana spike by the impregnation of iron sulfate at various ratios and further pyrolysis, in order to prepare three catalysts AC@Fe/1, AC@ Fe/2, AC@Fe/3 having iron mass contents of 1.6%, 2.2% and 3.3%, respectively. The pore size distributions, transmission electron microscope observations and X-ray photoelectron spectroscopy analyses have revealed that iron-based nanoparticles of 1-50 nm diameter, containing O and P, are located mainly in the supermicropores and mesopores of the activated carbon. Catalysts have been used to remove Rhodamine B in an aqueous solution by the heterogeneous Fenton process. AC@Fe/3 catalyst has allowed achieving 93% of solution discoloration compared to 87.4% for AC@Fe/2 and 78.5% for AC@Fe/1 after 180 min in batch reaction. The catalytic efficiency of AC@Fe/3 is attributed to the highest dispersion of the iron-based nanoparticles in the activated carbon porosity. The effects of hydrogen peroxide and initial dye concentration, pH, catalyst amount and temperature on the Rhodamine B removal kinetics catalyzed by AC@Fe/3 were studied. This catalyst showed remarkable performances of the Rhodamine B mineralization and possibility of recycling.

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Section: Characterization Of Ac and Heterogeneous Catalystssupporting

confidence: 93%

Section: Figmentioning

confidence: 69%

Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

et al. 2019

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“…The magnetic characteristics of biochars are depicted in Figure 2b. A magnetic hysteresis loop indicated that the saturation magnetization of SCG and Fe-SCG was 0 and 1.90 emu/g, respectively, demonstrating a good ferromagnetic response of Fe-SCG [31]. It is evident that Fe-SCG can be easily separated from a solution, resulting in avoiding the formation of the secondary pollutants.…”

Section: Characterization Of Biocharmentioning

confidence: 95%

“…Fe 3 O 4 nanoparticle was an effective activator for sulfate radicals, which importantly contribute to the degradation of pollutants. Jafari et al [31] investigated the TC removal capacity by Fe 3 O 4 nanoparticle-coated activated carbon (AC@Fe 3 O 4 ) with the presence of PS. The results indicated that TC degradation by AC@Fe 3 O 4 was significantly accelerated from 56% to 81% after 180 min reaction.…”

Section: Introductionmentioning

confidence: 99%

Efficient Heterogeneous Activation of Persulfate by Iron-Modified Biochar for Removal of Antibiotic from Aqueous Solution: A Case Study of Tetracycline Removal

et al. 2019

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Waste reutilization is always highly desired in the environmental engineering and science community. In this study, Fe-SCG biochar was functionalized by modifying spent coffee grounds (SCG) with magnetite (Fe3+) at 700 °C and applied for the oxidative removal of tetracycline (TC) with the presence of persulfate (PS). The effects of pH, dosage of biochar and sodium persulfate and initial TC concentration on TC degradation were investigated in a batch system. Our results show that higher TC degradation efficiency was obtained at low pH, low initial TC concentration, and at high dosages of PS and biochar. The highest removal efficiency (96%) was achieved by Fe-SCG/PS under the conditions of pH = 2.0, [Fe-SCG] = 2.5 g/L, [PS] = 60 mM and [TC] = 1 mM. The proposed Fe-SCG catalyst could be a promising effective biochar for the remediation of other emerging organic contaminants.

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“…Fenton oxidation, as an Advanced Oxidation Process (AOP), was used successfully in treatment of different artificial wastewaters with various contaminants, like phenols [8][9][10][11][12][13][14][15], nitrophenols [16,17], chlorophenols [18][19][20], nitrotoluene [21,22], and cresols [23]. Fenton's oxidation with ferrous iron (Fe 2+ ) can generate strong oxidant hydroxyl-1 that led to degradation of recalcitrant organics at acidic conditions [24].…”

Section: Introductionmentioning

confidence: 99%

Removal of dinitrotoluene from petrochemical wastewater by Fenton oxidation, kinetics and the optimum experiment conditions

et al. 2019

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The performance of Fenton oxidation processes with simultaneous application of two oxidants including (H 2 O 2 ) and sodium persulfate (Na 2 S 2 O 8 ), in the presence of iron (Fe 2+ ) as a catalyst to oxide dinitrotoluene (DNT) was investigated. For optimization of processes, the effect of operational parameters such as solution pH, oxidant dosages, reaction time and initial DNT concentrations on their performance was evaluated. All experiments were conducted at room temperature (25 ± 2 °C). For all studied processes, the efficiency of pollutant removal was enhanced by increasing the oxidant dosages, while it witnessed a reduction with increasing the initial DNT concentration. The results showed that Fe 2+ /H 2 O 2 / Na 2 S 2 O 8 system was more efficient in alkaline conditions and the oxidizing of DNT followed pseudo-first-order kinetics. At optimum conditions, the mineralization degree was higher than 86%. Moreover, high potential of DNT removal in a petrochemical effluent sample was observed. Fenton process in the presence of simultaneous application of Na 2 S 2 O 8 and H 2 O 2 can be used as an effective and promising method for petrochemical wastewaters treatment, due to high efficiency in contaminants removal and also high potential of mineralization.

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Fenton-like catalytic oxidation of tetracycline by AC@Fe3O4 as a heterogeneous persulfate activator: Adsorption and degradation studies

Cited by 238 publications

References 30 publications

Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

Effectiveness of the dispersion of iron nanoparticles within micropores and mesopores of activated carbon for Rhodamine B removal in wastewater by the heterogeneous Fenton process

Efficient Heterogeneous Activation of Persulfate by Iron-Modified Biochar for Removal of Antibiotic from Aqueous Solution: A Case Study of Tetracycline Removal

Removal of dinitrotoluene from petrochemical wastewater by Fenton oxidation, kinetics and the optimum experiment conditions

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