Synthesis of activated carbon from walnut wood and magnetized with cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>) and its application in removal of cephalexin from aqueous solutions

Askari, Roya; Afshin, Shirin; Rashtbari, Yousef; Moharrami, Amir; Mohammadi, Faezeh; Vosuoghi, Mehdi; Dargahi, Abdollah

doi:10.1080/01932691.2021.2008421

Cited by 26 publications

(3 citation statements)

References 70 publications

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“…Askari et al investigated the removal of antibiotics from aqueous environments using walnut wood and magnetized with cobalt ferrite. The results revealed that the increase in time caused an increase in the removal percentage of antibiotics 46 . Similar results were obtained regarding the increase in removal percentage with increasing contact time in studies by Lanjwani et al, Vu et al, and Mohammed et al 47 – 49 .…”

Section: Resultsmentioning

confidence: 95%

Optimization of process parameters for trimethoprim and sulfamethoxazole removal by magnetite-chitosan nanoparticles using Box–Behnken design

Alishiri,

Gonbadi,

Narimani

et al. 2023

Sci Rep

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The contamination of the aquatic environment with antibiotics is among the major and developing problems worldwide. The present study investigates the potential of adsorbent magnetite-chitosan nanoparticles (Fe3O4/CS NPs) for removing trimethoprim (TMP) and sulfamethoxazole (SMX). For this purpose, Fe3O4/CS NPs were synthesized by the co-precipitation method, and the adsorbent characteristics were investigated using XRD, SEM, TEM, pHzpc, FTIR, and VSM. The effect of independent variables (pH, sonication time, adsorbent amount, and analyte concentration) on removal performance was modeled and evaluated by Box–Behnken design (BBD). The SEM image of the Fe3O4/CS adsorbent showed that the adsorbent had a rough and irregular surface. The size of Fe3O4/CS crystals was about 70 nm. XRD analysis confirmed the purity and absence of impurities in the adsorbent. TEM image analysis showed that the adsorbent had a porous structure, and the particle size was in the range of nanometers. In VSM, the saturation magnetization of Fe3O4/CS adsorbent was 25 emu g−1 and the magnet could easily separate the adsorbent from the solution. The results revealed that the optimum condition was achieved at a concentration of 22 mg L−1, a sonication time of 15 min, an adsorbent amount of 0.13 g/100 mL, and a pH of 6. Among different solvents (i.e., ethanol, acetone, nitric acid, and acetonitrile), significant desorption of TMP and SMX was achieved using ethanol. Also, results confirmed that Fe3O4/CS NPs can be used for up to six adsorption/desorption cycles. In addition, applying the Fe3O4/CS NPs on real water samples revealed that Fe3O4/CS NPs could remove TMP and SMX in the 91.23–95.95% range with RSD (n = 3) < 4. Overall, the Fe3O4/CS NPs exhibit great potential for removing TMP and SMX antibiotics from real water samples.

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Section: Resultsmentioning

confidence: 95%

Optimization of process parameters for trimethoprim and sulfamethoxazole removal by magnetite-chitosan nanoparticles using Box–Behnken design

Alishiri,

Gonbadi,

Narimani

et al. 2023

Sci Rep

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“…The various adsorption capacities of different biomass derived activated carbon are shown in Table 5. [33][34][35][36] From Table 5, it is evident that RGAC has better adsorption capacity than the rest of the biomass derived carbon mentioned.…”

Section: Regeneration Studiesmentioning

confidence: 99%

Waste to resource: Engineered ridge gourd peel‐based activated carbon for enhanced cephalexin adsorption

Krishna,

2024

Applied Organom Chemis

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This research investigates the efficacy of ridge gourd peel‐derived activated carbon (RGAC), activated with zinc chloride, for the removal of the antibiotic pollutant cephalexin (CFX) from aqueous solutions. Ensuring the elimination of cephalexin residues from aquatic environments is crucial for curbing the emergence of antibiotic‐resistant bacteria and preserving the balance of ecosystems. RGAC exhibits exceptional characteristics, with a surface area of 945.857 m2/g and a pore size of 1.7 nm, as determined through thorough structural analysis. Scanning electron microscopy and Fourier transform infrared analysis confirm the presence of various functional groups on RGAC's surface which aids in adsorption process, while zeta potential analysis indicates a negative surface charge of −18.11 mV. As experimental investigation, batch study was conducted considering distilled water spiked with CFX under standard condition for treatment with RGAC. Impressively, RGAC demonstrates a high CFX adsorption capacity of 37.56 mg/g, also achieving more than 90% CFX removal efficiency. Fitting of the Langmuir isotherm (R2 = 0.9647) and the pseudo‐second‐order kinetics model (R2 = 0.99) reveals strong agreement between theoretical predictions and experimental results. Furthermore, real‐time sampling and regeneration studies underscore RGAC's potential as a commercially viable adsorbent for addressing antibiotic micro‐pollutants in aquatic environments. Throughout six cycles of regeneration studies, a stable pattern emerged, showcasing rejection rates consistently between 81% and 93%. These findings contribute significantly to the advancement of environmentally sustainable water treatment strategies and pollution mitigation efforts.

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“…Catalysts with different supports and active sites have been used in the Fenton and pseudo-Fenton processes, such as Fe/Al 2 O 3 [47,48] and Fe/ZSM-5 [49]. Askari et al [50] utilized cobalt ferrite as heterogeneous catalysts to eliminate cephalexin from aqueous solutions. In this research the R2 which shows the correlation between actual values and predicted values [51] is employed to confirm the accuracy of the model.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Investigation and Machine Learning-Based Prediction of Decolorization of Wastewater by Using Zeolite Catalyst in Electro-Fenton Reaction

El Jery,

Aldrdery,

Shirode

et al. 2023

Catalysts

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The shortage of water resources has caused extensive research to be conducted in this field to develop effective, rapid, and affordable wastewater treatment methods. For the treatment of wastewater, modern oxidation techniques are desirable due to their excellent performance and simplicity of implementation. In this project, wet impregnation and the hydrothermal technique were applied to synthesize a modified catalyst. Different analysis methods were used to determine its characteristics, including XRD, BET, FT-IR, NH3−TPD, and FE-SEM. The catalyst features a spherical shape, large surface area, high crystallinity, and uniform active phase dispersion. In order to eliminate the methylene blue dye as a modeling effluent, the catalyst’s performance was examined in a heterogeneous quasi-electro-Fenton (EF) reaction. The impact of various performance characteristics, such as catalyst concentration in the reaction medium, solution pH, and current intensity between the two electrodes, was elucidated. According to the results, the best operational circumstances included a pH level of 2, a catalyst concentration of 0.15 g/L, and a current of 150 mA, resulting in the greatest elimination efficiency of 101%. The catalyst’s performance was stable during three consecutive tests. A pseudo-first-order model for the elimination reaction’s kinetics was developed, which showed acceptable agreement with the experimental results. This study’s findings help clarify how well the heterogeneous zeolite catalyst functions in the pseudo-EF reaction. The results revealed the method’s potential to be implemented in wastewater treatment. An artificial neural network model is utilized to predict the removal percentage. The hyperparameter tuning is used to find the best model, and the model achieved an MAE of 1.26% and the R2 was 0.99.

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Synthesis of activated carbon from walnut wood and magnetized with cobalt ferrite (CoFe₂O₄) and its application in removal of cephalexin from aqueous solutions

Cited by 26 publications

References 70 publications

Optimization of process parameters for trimethoprim and sulfamethoxazole removal by magnetite-chitosan nanoparticles using Box–Behnken design

Optimization of process parameters for trimethoprim and sulfamethoxazole removal by magnetite-chitosan nanoparticles using Box–Behnken design

Waste to resource: Engineered ridge gourd peel‐based activated carbon for enhanced cephalexin adsorption

An Efficient Investigation and Machine Learning-Based Prediction of Decolorization of Wastewater by Using Zeolite Catalyst in Electro-Fenton Reaction

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Synthesis of activated carbon from walnut wood and magnetized with cobalt ferrite (CoFe2O4) and its application in removal of cephalexin from aqueous solutions

Cited by 26 publications

References 70 publications

Optimization of process parameters for trimethoprim and sulfamethoxazole removal by magnetite-chitosan nanoparticles using Box–Behnken design

Optimization of process parameters for trimethoprim and sulfamethoxazole removal by magnetite-chitosan nanoparticles using Box–Behnken design

Waste to resource: Engineered ridge gourd peel‐based activated carbon for enhanced cephalexin adsorption

An Efficient Investigation and Machine Learning-Based Prediction of Decolorization of Wastewater by Using Zeolite Catalyst in Electro-Fenton Reaction

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Synthesis of activated carbon from walnut wood and magnetized with cobalt ferrite (CoFe₂O₄) and its application in removal of cephalexin from aqueous solutions