Enhancement of activity and lifetime of nano-iron oxide catalyst for environmentally friendly catalytic phenol oxidation process

Hamad, Khaleel I.; Humadi, Jasim I.; Issa, Yousif S.; Gheni, Saba A.; Ahmed, Mustafa A.; Hassan, Ahmed

doi:10.1016/j.clet.2022.100570

Cited by 14 publications

(13 citation statements)

References 50 publications

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“…The results showed that the oxidation activity of phenol increases linearly with the increase of MnO2 loading. Also, the results showed stable activity for catalyst through all times without deactivation effects (Hamad et al, 2022a;. This behavior can be returned to that the dispersion of MnO2 on the Fe2O3 differs based on the active metal oxide loading, the activity of wet catalytic phenol oxidation process may change as a result (Hamad et al, 2022a;Humadi et al, 2023).…”

Section: Effect Of Mnomentioning

confidence: 55%

“…This behavior can be returned to the significant occupation of the Fe2O3 pores via MnO2. The deposition of active metal oxide in the pores of the catalyst support also led to blockage and interference in nitrogen diffusion (Aabid et al, 2023;Fathi, Humadi, Mahmood, Nawaf, & Ayoub RS, 2022;Humadi et al, 2023).The results of XRD patterns for the synthesis catalysts were explained in previous study (Hamad et al, 2022a). The scanning electron microscope (SEM) for the synthesis (2% MnO2/Fe2O3) and (5% MnO2/Fe2O3) catalysts were showed in Figures 2 and 3.…”

Section: Catalyst Characterizationmentioning

confidence: 57%

“…Also, the results showed stable activity for catalyst through all times without deactivation effects (Hamad et al, 2022a;. This behavior can be returned to that the dispersion of MnO2 on the Fe2O3 differs based on the active metal oxide loading, the activity of wet catalytic phenol oxidation process may change as a result (Hamad et al, 2022a;Humadi et al, 2023). In the consecutive experiments, the same catalyst was used without the replacing.…”

Section: Effect Of Mnomentioning

confidence: 59%

“…So, to reduce: The sum of squared error (SSE). Subject to: By calculating the mathematical operation constraints of the first method (the upper and lower constraints for the linear approach), the optimization problem is as follows: (1) (Hamad et al, 2022a;Humadi et al, 2023; Arrhenius equation (k) k=k0𝑒 (− 𝐸𝐴 𝑅𝑇 )…”

Section: Optimization Problem Formulation For Evaluation Of Kinetic P...mentioning

confidence: 99%

“…Phenol and phenolic compounds are considered a priority pollutant contaminant categorized as teratogenicity and carcinogenic (Saravanan et al, 2021;Stefanakis & Thullner, 2016;Wang, Bian, & Li, 2012;Yaqub, Isa, Ajab, & Junaid, 2017). Different technologies, such as electrochemical degradation (Iniesta, González-Garcıa, Exposito, Montiel, & Aldaz, 2001;Li, Cui, Feng, Xie, & Gu, 2005;Luo, Li, Wu, Zheng, & Dong, 2015), biodegradation (Amor, Eiroa, Kennes, & Veiga, 2005;Kumar, Kumar, & Kumar, 2005;Peyton, Wilson, & Yonge, 2002), physical sorption (Hamad et al, 2022b;Li et al, 2002;Pan et al, 2003), and the advanced oxidation Processes (AOPs) (Amor et al, 2019;Aziz, Asaithambi, & Daud, 2016;Esplugas, Gimenez, Contreras, Pascual, & Rodrıǵuez, 2002;Hamad et al, 2022b;Martins & Quinta-Ferreira, 2011;Xu, Siracusa, Di Gregorio, & Yuan, 2018) have been employed to purify the wastewater. The advanced oxidation processes (AOPs) are characterized by producing highly reactive oxidizing radicals, can degrade these organic contaminants to carbon dioxide, water, and mineral salts (mineralization) (Covinich, Bengoechea, Fenoglio, & Area, 2014;Gągol et al, 2020;Lozano, Devard, Ulla, & Zamaro, 2020;Shahidi, Roy, & Azzouz, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Removal efficiency and reaction kinetics of phenolic compounds in refinery wastewater by nano catalytic wet oxidation

Issa

Hamad²,

Algawi

et al. 2023

Int. J. Renew. Energy Dev.

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A novel nano-catalyst based on iron oxide (MnO2/Fe2O3) was developed to promote wet oxidation of phenol. MnO2 was doped in Fe2O3 matrix to prepare composite nano-catalyst with different doping percentage (0, 2 and 5%). The catalytic phenol oxidation was conducted under different reaction temperatures and residence times. To evaluate the optimal kinetic parameters aiming to maximize phenol removal under the optimal conditions for the catalytic wet phenol oxidation process, modeling was applied on the batch reactor using the novel synthesis nano-catalyst (MnO2/Fe2O3) and the model developed was fed with the experimental data. gPROMS package was used to model the process of phenol oxidation and to optimize the experimental data. The error predicted between the simulated and experimental data was less than 5%. The optimal operating conditions were 294 min residence time, 70oC reaction temperature, and 764 ppm initial concentration of phenol over the prepared 5% MnO2/Fe2O3. Running of wet oxidation of phenol under the optimal operating conditions resulted in 98% removal of phenol from refinery wastewater.

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Section: Effect Of Mnomentioning

confidence: 55%

Section: Catalyst Characterizationmentioning

confidence: 57%

Section: Effect Of Mnomentioning

confidence: 59%

Section: Optimization Problem Formulation For Evaluation Of Kinetic P...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Removal efficiency and reaction kinetics of phenolic compounds in refinery wastewater by nano catalytic wet oxidation

Issa

Hamad²,

Algawi

et al. 2023

Int. J. Renew. Energy Dev.

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Efficient immobilization of acids into activated carbon for high durability and continuous desulfurization of diesel fuel

Hamad,

Humadi,

Abdulkareem

et al. 2023

Energy Science & Engineering

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Fuel contaminants are the most critical issues in human health, cars' engines life and performance, and refinery equipment, and have an ultimate consecutive economic negative impact over time. Nowadays, sulfur is considered as one of the most dangerous contaminants in fuel, and different approaches have been carried out for desulfurization processing. In this study, new modified activated carbon (AC) for adsorptive diesel fuel desulfurization is carried out. To increase the robustness and effectiveness of a continuous adsorptive desulfurization (ADS) process, the study provides a new surface modification technique of the AC. Real diesel fuel (RDF, sulfur content 7510 ppm) and model diesel fuel (MDF, dibenzothiophene content 637 ppm) were used in a series of ADS tests carried out in a fixed‐bed adsorption column under atmospheric pressure and temperature. To achieve zero emissions of diesel fuel, the process parameters were optimized using the experimental findings. The AC and modified AC were tested via Brunauer–Emmett–Teller and Fourier Transform Infrared to evaluate the effect of the modification process on adsorbent characterization. The liquid hourly space velocity of the feedstock, the height of the absorber bed, and the kind of AC were the optimization parameters. In these circumstances, the ADS procedure was examined to address the impact of the feedstock flow rate on the effectiveness of ADS. The sulfur removal efficiency was 85.3% for RDF and 94% for MDF at 9 cm bed height, 8 h−1 LSHV, and 10 g bed weight, respectively. This is the first time that AC has been used to examine the stability of continuous ADS and to examine how acid immobilization affects sulfur removal. The investigation showed that the modified AC had a high rate of stability and was effective in the continuous ADS process. The spent modified AC was regenerated via a solvent extractive regeneration process to evaluate the durability of the ACs. The results proved that the regeneration performance of various solvents for modified activated carbon 1 decreases as follows: iso‐octane > ethanol > methanol > acetonitrile.

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Resourceful exploitation of sedimentary clay: Designing a dual‐chambered borosilicate glass reactor system for the efficient treatment of malachite green and phenol through SCRT adsorption and 5%Fe@SRCT catalysis via CWPO, with evaluation of seed germination and fish survival

Boualam,

El Alami,

Ibaghlin

et al. 2024

Water Environment Research

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This study presents an innovative double‐walled borosilicate glass reactor system for the efficient treatment of liquid and gaseous wastewater. This reactor system allows precise temperature control, continuous pH monitoring, and controlled dosing of reagents to optimize reaction conditions. Detailed characterization was carried out by X‐ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), BET (specific surface area) analysis, point of zero charge (PZC), and scanning electron microscopy (SEM) for the SCR, SCRT, and 5%Fe@SCRT materials. For Malachite Green adsorption, SRCT demonstrated a maximum adsorption capacity of 39.78 ± 0.5 mg/g using the Langmuir isotherm model and followed pseudo‐second‐order kinetics. Optimum conditions for adsorption were found to be: an initial concentration of 50 ppm, an adsorbent dosage of 1 g/l, a pH of 8.5, and a temperature of 50°C. For the catalytic oxidation of phenol, 5%Fe@SRCT achieved a remarkable removal rate of 99.9 ± 0.1% under optimum conditions (50 ppm phenol, 1 g/l catalyst dosage, pH 3.5, H2O2 concentration 8.7 mM, and temperature 70°C). Intermediates identified during the reaction included hydroquinone, benzoquinone, catechol, and resorcinol, with degradation occurring over a 60‐minute reaction period. The 5%Fe@SCRT material showed excellent reusability in the removal of phenol by catalytic oxidation, with no significant loss of efficiency over three cycles, while the SRCT underwent three cycles of regeneration for the adsorption of Malachite Green. Scavenger tests confirmed the involvement of hydroxyl radicals in the catalytic oxidation process. In addition, fish survival tests after catalytic oxidation of phenol by 5%Fe@SRCT showed no impact on fish, underlining the environmental safety of this process. In addition, germination tests after decolorization of MG by SRCT demonstrated a good effect with no negative impact, reinforcing the ecological value of this innovative technology. These results highlight the innovative use of SCRT and 5%Fe@SCRT as versatile materials for environmental remediation, exploiting their effective adsorption capacities and efficient catalytic oxidation performance within the proposed double‐walled borosilicate glass reactor system.Practitioner Points The study demonstrates the effectiveness of an innovative reactor system employing SRCT adsorbent and Fe@SRCT catalyst for efficient removal of malachite green and phenol from wastewater. Environmental impact assessment, including seed germination and fish survival evaluation, validates the method's eco‐friendly potential. Implementation of this approach could significantly contribute to sustainable water treatment practices.

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Enhancement of activity and lifetime of nano-iron oxide catalyst for environmentally friendly catalytic phenol oxidation process

Cited by 14 publications

References 50 publications

Removal efficiency and reaction kinetics of phenolic compounds in refinery wastewater by nano catalytic wet oxidation

Removal efficiency and reaction kinetics of phenolic compounds in refinery wastewater by nano catalytic wet oxidation

Efficient immobilization of acids into activated carbon for high durability and continuous desulfurization of diesel fuel

Resourceful exploitation of sedimentary clay: Designing a dual‐chambered borosilicate glass reactor system for the efficient treatment of malachite green and phenol through SCRT adsorption and 5%Fe@SRCT catalysis via CWPO, with evaluation of seed germination and fish survival

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