Preparation of polyvinylpyrrolidone modified nanomagnetite for degradation of nicotine by heterogeneous Fenton process

Bulánek, Roman; Hrdina, Radim; Hassan, Asaad F.

doi:10.1016/j.jece.2019.102988

Cited by 23 publications

(7 citation statements)

References 56 publications

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“…The observed increase in V T (cm 3 /g) with specific surface area is due to the increase in porosity and chemical functional groups of polysaccharides (k-carrageenan) [47]. The H2 type of hysteresis loop for nanosolid materials may be related to the formation of porous inorganic oxides affecting the connectivity of pores [16]. Pore radius of NM, KC, and NC is 4.55, 3.14, and 3.64 nm, respectively, confirming that all samples are mesoporous.…”

Section: Characterization Of Nanoadsorbents and Photocatalystsmentioning

confidence: 99%

“…The black-colored solution that resulted was heated at the same temperature for about 10 minutes. The solution was filtered, and the black precipitate was washed by distilled water and dried in an oven at 80 °C [16].…”

Section: Preparation Of Nanomagnetite (Nm)mentioning

confidence: 99%

“…Various kinetic models (Eqs. [16][17][18] were utilized for studying kinetic parameters of MB adsorption on the surface of prepared solid adsorbents [30][31][32]. Pseudo-first-order (PFO) kinetic model:…”

Section: Kinetic Models For Adsorption Processmentioning

confidence: 99%

“…Ozonation and chlorination are not common oxidation methods because of the short lifetime of ozone and the toxicity of chlorine while the Fenton process is regarded as the most innovative method for the degradation of organic pollutants [15]. In 1894 Fenton reaction was discovered by Henry Fenton for tartaric acid oxidation by the reaction between Fenton's reagent (ferrous ion and hydrogen peroxide) to produce hydroxyl radical ( • OH) which is a very reactive and general strong oxidant with higher oxidation potential equals 2.8 eV [16]. It can oxidize organic contaminants into safe H 2 O and CO 2 as indicated by the Haber-Weiss mechanism [17]:…”

Section: Introductionmentioning

confidence: 99%

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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: Characterization Of Nanoadsorbents and Photocatalystsmentioning

confidence: 99%

Section: Preparation Of Nanomagnetite (Nm)mentioning

confidence: 99%

Section: Kinetic Models For Adsorption Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…Among the AOPs, Fenton is the most effective and promising technique to generate •OH radical due to its simple operation, low energy consumption, and use of environmental-friendly reagents (Fe 2+ and H 2 O 2 ) [8]. The classical Fenton involves the reaction between Fe 2+ persistent organic pollutants including azo dyes [9]. However, the process has challenge for application in industries due to the formation of stable ferric complexes (Fe-OOH 2+ Eq.…”

Section: Introductionmentioning

confidence: 99%

Fe-Natural Zeolite as Highly Active Heterogeneous Catalyst in Decolorization of Reactive Blue 4

Hassan¹,

Hameed²

2020

IJESD

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Fenton-like reaction using Fe-natural zeolite (Fe-NZ) was investigated for the decolorization of Reactive Blue 4(RB4). The effect of iron ions loading, H 2 O 2 concentration and initial pH value were investigated. The maximum decolorization efficiency of 98.71% was achieved at 0.60 wt% of iron ions loading, 16 mM H 2 O 2 concentration and at initial pH of 2.5. The high performance of Fe-NZ indicates that the heterogeneous Fenton-like could be efficiently employed for the treatment of wastewater containing azo dye.

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Magnetic particle spray mass spectrometry for the determination of beta-blockers in plasma samples

de Castilho Alves Morais,

Mendes,

Arnoni

et al. 2024

Microchim Acta

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Preparation of polyvinylpyrrolidone modified nanomagnetite for degradation of nicotine by heterogeneous Fenton process

Cited by 23 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

Fe-Natural Zeolite as Highly Active Heterogeneous Catalyst in Decolorization of Reactive Blue 4

Magnetic particle spray mass spectrometry for the determination of beta-blockers in plasma samples

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