Coal fly ash supported CoFe2O4 nanocomposites: Synergetic Fenton-like and photocatalytic degradation of methylene blue

Nadeem, Nimra; Yaseen, Muhammad; Rehan, Zulfiqar Ahmad; Zahid, Muhammad; Shakoor, Abdul; Jilani, Asim; Iqbal, Javed; Rasul, Shahid; Shahid, Imran

doi:10.1016/j.envres.2021.112280

Cited by 47 publications

(36 citation statements)

References 70 publications

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“…The phenomenon could be explained by that sufficient hydroxyl radical and catalytic active sites were available for targeted dye molecules at low concentration. Therefore, the increasing initial concentrations make the concentration gradient pressure greater, which is favorable for the mass transfer process and yields efficient degradation [7,9,68] . However, after the concentration reached the optimum value, the increased dye concentration reduces the ratio of oxidant to dye, causing a negative impact on photocatalytic degradation [9,66] .…”

Section: Resultsmentioning

confidence: 99%

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Coal Fly Ash‐based P Zeolite‐anchored Cu_xO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

Gan

Huabing

et al. 2023

ChemistrySelect

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The environmental quality has been given more attention because of the potential hazards brought by urbanization and industrialization. Therefore, this study proposed a comprehensive utilization method for treating dye wastewater using solid waste. P zeolite was prepared using coal fly ash (CFA), and then anchored with CuxO as catalyst (CuxO/P) for heterogeneous Fenton‐like degradation of methylene blue (MB) under ultraviolet irradiation (UV). Compared with P zeolite and CuO, the catalyst CuxO/P showed the highest degradation efficiency of MB in combination with H2O2 and UV (98.3 %) after 90 min of reaction. This can be attributed to the involvement of copper component and the dispersion of P zeolite as the carrier. The MB degradation reaction was consistent with first‐order kinetics. The sum of the rate constant k in the CuxO/P+H2O2 (0.0030 min−1) and CuxO/P+UV (0.0035 min−1) system is much lower than that in the CuxO/P+H2O2+UV system (0.0491 min−1), indicating a strong synergistic effect among CuxO/P, H2O2, and UV. Meanwhile, the catalyst CuxO/P with excellent stability and renewability presented a degradation efficiency of over 95 % in 5 cycles, exhibiting considerable application prospects in dye wastewater treatment. Furthermore, the most effectively radical was ⋅OH generated by catalytic H2O2. This work provided a new perspective for the reuse of coal fly ash. It would be one of the most efficient and comprehensive utilization ways to treat wastewater with solid waste.

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Section: Resultsmentioning

confidence: 99%

“…To solve these challenges, heterogeneous Fenton‐like catalysts have been developed by many scholars [16,18–21] . And the catalytic performance of Fenton‐like catalysts can be significantly enhanced by ultraviolet (UV) irradiation [9] …”

Section: Introductionmentioning

confidence: 99%

Coal Fly Ash‐based P Zeolite‐anchored Cu_xO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

Gan

Huabing

et al. 2023

ChemistrySelect

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“…However, after the establishment of equilibrium between the oxidant dose and other operating parameters in the reaction, no effective increase in dye degradation was observed with the further increase in the oxidant dose [48,49]. The possible reason for this is the production of HO • 2 (hydrogen per oxide radicals) due to following reactions:…”

Section: Effect Of Oxidant Dosementioning

confidence: 99%

The Design of Ternary Composite Polyurethane Membranes with an Enhanced Photocatalytic Degradation Potential for the Removal of Anionic Dyes

et al. 2022

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Photocatalysis is an efficient and an eco-friendly way to eliminate organic pollutants from wastewater and filtration media. The major dilemma coupled with conventional membrane technology in wastewater remediation is fouling. In this study, the photocatalytic degradation potential of novel thermoplastic polyurethane (TPU) based NiO on aminated graphene oxide (NH2-GO) nanocomposite membranes was explored. The fabrication of TPU-NiO/NH2-GO membranes was achieved by the phase inversion method and analyzed for their performances. The membranes were effectively characterized in terms of surface morphology, functional group, and crystalline phase identification, using scanning electron microscopy, Fourier transformed infrared spectroscopy, and X-ray diffraction analysis, respectively. The prepared materials were investigated in terms of photocatalytic degradation potential against selected pollutants. Approximately 94% dye removal efficiency was observed under optimized conditions (i.e., reaction time = 180 min, pH 3–4, photocatalyst dose = 80 mg/100 mL, and oxidant dose = 10 mM). The optimized membranes possessed effective pure water flux and excellent dye rejection (approximately 94%) under 4 bar pressure. The nickel leaching in the treated wastewater sample was determined using inductively coupled plasma-optical emission spectrometry (ICP-OES). The obtained data was kinetically analyzed using first- and second-order reaction kinetic models. A first-order kinetic study was suited for the present study. Besides, the proposed membranes provided excellent photocatalytic ability up to six reusability cycles. The combination of TPU and NH2-GO provided effective strength to membranes and the immobilization of NiO nanoparticles improved the photocatalytic behavior.

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“…At the same time, the Fenton catalytic efficiency of most pure CoFe 2 O 4 is not high, so the effect of using CoFe 2 O 4 alone as a photo-Fenton catalyst to treat organic pollutants is not as expected. Several studies have shown that the limitations of CoFe 2 O 4 can be effectively improved by morphology control, element doping, defect introduction, and coupling with other catalytic materials, 35,36 making it advantageous in the field of photo-Fenton catalytic treatment of organic wastewater. Therefore, this paper reviews the recent research progress of CoFe 2 O 4 photo-Fenton catalytic treatment of organic pollutants, including the basic properties of CoFe 2 O 4 , photo-Fenton degradation mechanism, preparation methods, and modification strategies.…”

Section: Introductionmentioning

confidence: 99%

Review on cobalt ferrite as photo-Fenton catalysts for degradation of organic wastewater

Wang

You

et al. 2023

Catal. Sci. Technol.

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Coal fly ash supported CoFe2O4 nanocomposites: Synergetic Fenton-like and photocatalytic degradation of methylene blue

Cited by 47 publications

References 70 publications

Coal Fly Ash‐based P Zeolite‐anchored Cu_xO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

Coal Fly Ash‐based P Zeolite‐anchored Cu_xO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

The Design of Ternary Composite Polyurethane Membranes with an Enhanced Photocatalytic Degradation Potential for the Removal of Anionic Dyes

Review on cobalt ferrite as photo-Fenton catalysts for degradation of organic wastewater

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Coal fly ash supported CoFe2O4 nanocomposites: Synergetic Fenton-like and photocatalytic degradation of methylene blue

Cited by 47 publications

References 70 publications

Coal Fly Ash‐based P Zeolite‐anchored CuxO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

Coal Fly Ash‐based P Zeolite‐anchored CuxO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

The Design of Ternary Composite Polyurethane Membranes with an Enhanced Photocatalytic Degradation Potential for the Removal of Anionic Dyes

Review on cobalt ferrite as photo-Fenton catalysts for degradation of organic wastewater

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Coal Fly Ash‐based P Zeolite‐anchored Cu_xO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue

Coal Fly Ash‐based P Zeolite‐anchored Cu_xO as an Efficient Catalyst for Heterogeneous Photo‐Fenton Degradation of Methylene Blue