Fluidized-bed Fenton process as alternative wastewater treatment technology—A review

Garcia‐Segura, Sergi; Bellotindos, Luzvisminda M.; Huang, Yao Hui; Brillas, Enric; Lu, Ming‐Chun

doi:10.1016/j.jtice.2016.07.021

Cited by 134 publications

(37 citation statements)

References 117 publications

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“…Many papers dealing with operational costs of AOPs at bench scale are available. However, articles focusing on operational expenses of full-scale advanced oxidation processes are scarce, and attention has been paid to this issue only in the last few years [46,[221][222][223][224][225][226][227]. From the literature review, it may be concluded that treatment costs tend to decrease as the pollutant's concentration in water increases.…”

Section: Prospects and Challenges Of Aopsmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

512

240

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In this work, the application of advanced oxidation processes (AOPs) for the removal of antibiotics from water has been reviewed. The present concern about water has been exposed, and the main problems derived from the presence of emerging pollutants have been analyzed. Photolysis processes, ozone-based AOPs including ozonation, O3/UV, O3/H2O2, and O3/H2O2/UV, hydrogen peroxide-based methods (i.e., H2O2/UV, Fenton, Fenton-like, hetero-Fenton, and photo-Fenton), heterogeneous photocatalysis (TiO2/UV and TiO2/H2O2/UV systems), and sonochemical and electrooxidative AOPs have been reviewed. The main challenges and prospects of AOPs, as well as some recommendations for the improvement of AOPs aimed at the removal of antibiotics from wastewaters, are pointed out.

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Section: Prospects and Challenges Of Aopsmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

512

240

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“…Despite its high efficiency and effectiveness, the application of classic Fenton reaction faces the disadvantages of strict pH restrictions, iron precipitation and the cost for catalyst recycling [29][30][31]. The formation rate of HO• is strongly dependent on the pH value while the oxidation potential of HO• declines as the pH increases [31,32]. Furthermore, the generation of HO• is directly limited by the formation of iron sludge in alkaline condition [30].…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Mechanistic Study on Catalytic Decomposition of Hydrogen Peroxide on Carbon-Nanodots/Graphitic Carbon Nitride Composite

et al. 2018

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The metal-free CDots/g-C3N4 composite, normally used as the photocatalyst in H2 generation and organic degradation, can also be applied as an environmental catalyst by in-situ production of strong oxidant hydroxyl radical (HO·) via catalytic decomposition of hydrogen peroxide (H2O2) without light irradiation. In this work, CDots/g-C3N4 composite was synthesized via an electrochemical method preparing CDots followed by the thermal polymerization of urea. Transmission electron microscopy (TEM), X-Ray diffraction (XRD), Fourier Transform Infrared (FTIR), N2 adsorption/desorption isotherm and pore width distribution were carried out for characterization. The intrinsic catalytic performance, including kinetics and thermodynamic, was studied in terms of catalytic decomposition of H2O2 without light irradiation. The second-order rate constant of the reaction was calculated to be (1.42 ± 0.07) × 10−9 m·s−1 and the activation energy was calculated to be (29.05 ± 0.80) kJ·mol−1. Tris(hydroxymethyl) aminomethane (Tris) was selected to probe the produced HO· during the decomposing of H2O2 as well as to buffer the pH of the solution. The composite was shown to be base-catalyzed and the optimal performance was achieved at pH 8.0. A detailed mechanism involving the adsorb-catalyze double reaction site was proposed. Overall, CDots/g-C3N4 composite can be further applied in advanced oxidation technology in the presence of H2O2 and the instinct dynamics and the mechanism can be referred to further applications in related fields.

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“…For example, the analysis of FTIR has shown evidence of possible interactions between SiO 2 and H 2 O 2 . One of the processes that occur in FBF is the interaction between SiO 2 and Fe 2+ , which can lead to the crystallization of iron oxides on the surface of the fluidized carriers [20,52]. To investigate the interaction of SiO 2 with iron, FESEM/EDX analysis was used to study the morphology and elemental composition of the SiO 2 before and after FBF process.…”

Section: Results Of Quantum Simulationmentioning

confidence: 99%

Fenton oxidation treatment of recalcitrant dye in fluidized bed reactor: Role of SiO₂ as carrier and its interaction with fenton's reagent

Bello

Raman

Asghar

2019

Env Prog and Sustain Energy

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The role of SiO2 and its interaction with Fenton's reagent in fluidized bed Fenton (FBF) process were investigated in this work. Due to the inherent complexity of fluidized bed process, theoretical and experimental approaches were adopted in the study. Quantum computational approach was employed to predict the thermodynamic feasibilities of the possible interactions in the process. Experiments were conducted to study the effect of carrier loading and its contribution to the pollutant removal. FESEM/EDX and FTIR analyses were used to investigate the changes on the surface of the carriers due to interaction with Fenton's reagent. The results of quantum analysis show that with ΔG = −0.3263052 kcal/mol, complex formation between SiO2 and H2O2 is highly feasible. This is attributed to the siloxane bridge (Si–O–Si) of the SiO2 network. The experimental results revealed that carrier loading has a positive effect on the process and more than 23% of the initial COD can be removed through adsorption. The fluidization process resulted in 20% higher COD removal compared to the conventional Fenton oxidation. The results of both experimental and quantum computation indicated that besides iron crystallization on the carriers, other interactions are also possible in the FBF process. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Fluidized-bed Fenton process as alternative wastewater treatment technology—A review

Cited by 134 publications

References 117 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Kinetic and Mechanistic Study on Catalytic Decomposition of Hydrogen Peroxide on Carbon-Nanodots/Graphitic Carbon Nitride Composite

Fenton oxidation treatment of recalcitrant dye in fluidized bed reactor: Role of SiO₂ as carrier and its interaction with fenton's reagent

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Fluidized-bed Fenton process as alternative wastewater treatment technology—A review

Cited by 134 publications

References 117 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Kinetic and Mechanistic Study on Catalytic Decomposition of Hydrogen Peroxide on Carbon-Nanodots/Graphitic Carbon Nitride Composite

Fenton oxidation treatment of recalcitrant dye in fluidized bed reactor: Role of SiO2 as carrier and its interaction with fenton's reagent

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Fenton oxidation treatment of recalcitrant dye in fluidized bed reactor: Role of SiO₂ as carrier and its interaction with fenton's reagent