Hydroxide Sludge/Hydrochar-Fe Composite Catalysts for Photo-Fenton Degradation of Dyes

Izghri, Zaina; Enaime, Ghizlane; Eouarrat, Mehdi; Chahid, Lhoussaine; Gaini, Layla El; Baçaoui, Abdelaziz; Yaacoubi, Abdelrani

doi:10.1155/2021/5588176

Cited by 10 publications

(5 citation statements)

References 56 publications

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“…In the present study, NC was compared with other reported solid materials for adsorption and photo-Fenton catalytic degradation of MB as indicated in Table S5 [2,5,[73][74][75][76][77][78][79].…”

Section: Comparison Between Nc and Other Adsorbents And Catalystsmentioning

confidence: 99%

Adsorption and Photo-Fenton Degradation of Methylene Blue Using Nanomagnetite/Potassium Carrageenan Bio-Composite Beads

et al. 2022

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The present study deals with the preparation of nanomagnetite (NM), potassium carrageenan (KC), and nanomagnetite/potassium carrageenan bio-composite beads (NC). Characterization of the prepared solid materials using different physicochemical techniques such as X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscope (TEM), energy-disperse X-ray spectroscopy (EDX), diffuse reflectance spectrophotometer (DRS), swelling ratio (SR%), N2 adsorption, pH of point of zero charges (pHPZC), and Fourier transform infrared spectroscopy (FTIR). Comparing between adsorption and photo-Fenton degradation process for methylene blue (MB) on the surface of the prepared solid materials. Nanomagnetite/potassium carrageenan bio-composite (NC) exhibited high specific surface area (406 m2/g), mesoporosity (pore radius, 3.64 nm), point of zero charge around pH6.0, and the occurrence of abundant oxygen-containing functional groups. Comparison between adsorption and photo-Fenton oxidation process for methylene blue (MB) was carried out under different application conditions. NC exhibited the maximum adsorption capacity with 374.50 mg/g at 40 °C after 24 h of shaking time while 96.9% of MB was completely degraded after 20 min of photo-Fenton process. Langmuir's adsorption model for MB onto the investigated solid materials is the best-fitted adsorption model based on the higher correlation coefficient values (0.9771–0.9999). Kinetic and thermodynamic measurements prove that adsorption follows PSO, endothermic, and spontaneous process, while photo-Fenton degradation of MB achieves PFO, nonspontaneous, and endothermic process. Photo-Fenton degradation is a fast and simple technique at a lower concentration of dye (< 40 mg/L) while at higher dye concentration, the adsorption process is preferred in the removal of that dye.

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Section: Comparison Between Nc and Other Adsorbents And Catalystsmentioning

confidence: 99%

Adsorption and Photo-Fenton Degradation of Methylene Blue Using Nanomagnetite/Potassium Carrageenan Bio-Composite Beads

et al. 2022

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“…The removal efficiency of MB using various Fenton catalysts is demonstrated in table 1. Hydroxide sludge/hydrochar-Fe composite 95.00 [18] Iron ore tailing from the tailings dam 80.00 [19] Magnetic nanocomposite 46.00 [20] Iron oxide supported on activated carbon 98.00…”

Section: H2o2 → •Oh + Oh −mentioning

confidence: 99%

Nickel ferrite nanoparticles‐doped graphene oxide as a heterogeneous Fenton catalyst: Synthesis, characterization, and catalytic application

Thy,

Tuyen,

Viet

et al. 2022

Vietnam Journal of Chemistry

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In this study, nickel ferrite nanoparticles‐doped graphene oxide nanocomposite (NiFe2O4/GO or NG) was fabricated by impregnation method with five different mass ratios of NiFe2O4:GO, namely, 1:1, 3:7, 4:6, 7:3, and 6:4, corresponding to NG1, NG2, NG3, NG4, and NG5 samples. According to the catalytic efficiency of the Fenton reaction of methylene blue (MB), the NG3 sample was chosen as the most appropriate sample, which possessed the highest catalytic efficiency. The effects of volume of H2O2, reaction time, and MB concentration, on the catalytic efficiency of NG3, were also investigated. The results revealed that with the 0.5 mL H2O2, MB concentration of 150 mg/L, and 60 min, the NG3 sample exhibited the highest catalytic efficiency of more than 99 %. The characterization of NG3 was investigated by advanced analysis methods. The results indicated that NiFe2O4 possessed a sphere shape with the size of 10‐30 nm, which was uniformly distributed on the GO sheets. Additionally, NG3 possessed a high specific surface area and magnetism. The above results confirmed that NiFe2O4/GO can be potentially applied in the treatment of organic dyes in water.

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“…It is classified as an acutely toxic compound and a mutagenic substance in the GHS classification [17][18][19][20]. In previous studies on degrading dyeing wastewater, MO was often selected as the modeling pollutant for evaluation of catalysts [21,22].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Photo-Fenton Removal of Methyl Orange Using the Sludge Generated in Dyeing Wastewater as Catalysts

Liu

Cui

et al. 2022

Water

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The disposal process of iron-containing sludge often leads to secondary pollution. Pyrolysis of sludge appears to be less polluting than conventional methods. Herein, the heterogeneous photo-Fenton catalysts were prepared using sludge generated in the dyeing wastewater through a simple one-step pyrolysis route. The catalysts were characterized by XRD, FT-IR, XPS, EDS, BET, and SEM. The batch experiments for methyl orange (MO) degradation were performed to evaluate the efficiency and stability of the catalysts. Among the catalysts prepared, FeCN-300 exhibited the best degradation efficiency with 92% removal of the pollutant and good stability, with approximately 90% removal of the pollutant after five cycles. The •OH was identified as the dominant reactive species. This work provides a reasonable resource utilization of iron-containing sludge.

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Hydroxide Sludge/Hydrochar-Fe Composite Catalysts for Photo-Fenton Degradation of Dyes

Cited by 10 publications

References 56 publications

Adsorption and Photo-Fenton Degradation of Methylene Blue Using Nanomagnetite/Potassium Carrageenan Bio-Composite Beads

Adsorption and Photo-Fenton Degradation of Methylene Blue Using Nanomagnetite/Potassium Carrageenan Bio-Composite Beads

Nickel ferrite nanoparticles‐doped graphene oxide as a heterogeneous Fenton catalyst: Synthesis, characterization, and catalytic application

Heterogeneous Photo-Fenton Removal of Methyl Orange Using the Sludge Generated in Dyeing Wastewater as Catalysts

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