Fabrication and characterization of magnetic cobalt ferrite nanoparticles for efficient removal of humic acid from aqueous solutions

Kamranifar, Mohammad; Masoudi, Fatemehsadat; Naghizadeh, Ali

doi:10.5004/dwt.2019.23675

Cited by 14 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pseudo-second-order kinetics suggests that adsorption has taken place due to chemisorption [25,26]. The different isotherm models are followed by researchers to know the interactions between the adsorbate and adsorbents [27,28]. Figures 5(c) and (d) represent the Langmuir and Freundlich isotherms fittings and the study shows that both the models were fitted regardless of the correlation coefficient, although the Freundlich isotherms fitted well in comparison with the Langmuir model on the basis of higher correlation coefficients.…”

Section: Results and Discussion -mentioning

confidence: 99%

Active adsorption performance of planetary ball milled Saudi Arabian bentonite clay for the removal of copper ions from aqueous solution

Abutaleb

Eldoma

Imran

et al. 2021

EPL

View full text Add to dashboard Cite

We report the role of local bentonite clay in the removal of Cu 2+ ions from aqueous solution. The fine bentonite clay powder was analysed by XRD, FTIR, SEM and DLS analysis techniques. Further, the adsorption experiments were carried out by varying many factors such as weight and size of bentonite clay, residence time, pH of the solution, stirring rate, temperature, and flow rate. The optimum conditions for effective removal of Cu 2+ ions was 1 g dose of bentonite and 63 μm size of bentonite, 50 minutes of residence time and 50 • C temperature at pH 3 with a flow rate of 1 L/min. The data fitted well the Freundlich model and a maximum adsorption capacity of 61.72 mg/g has been obtained. The value of Gibbs free energy changes (ΔG • ), enthalpy changes (ΔH • ) and entropy changes (ΔS • ) were found to be −3819.86

show abstract

Section: Results and Discussion -mentioning

confidence: 99%

Active adsorption performance of planetary ball milled Saudi Arabian bentonite clay for the removal of copper ions from aqueous solution

Abutaleb

Eldoma

Imran

et al. 2021

EPL

View full text Add to dashboard Cite

show abstract

“…As seen in Table 2, diazinon adsorption by Fe 3 O 4 @SiO 2 is adjusted to Langmuir isotherm ( R 2 = 0.93), and then it follows Dubinin–Radushkevich ( R 2 = 0.90) Temkin ( R 2 = 0.88), and Freundlich ( R 2 = 0.88) and BET ( R 2 = 0.67). Adsorption isotherms express the adsorption mechanism (Kamranifar et al , 2019b). The Langmuir behavior of diazinon adsorption on Fe 3 O 4 @SiO 2 reflects that the adsorption process occurs in some special sites and homogeneous surfaces inside of adsorbent (Dong et al , 2014; Arbabi et al , 2017).…”

Section: Resultsmentioning

confidence: 99%

Fe₃O₄@SiO₂ magnetic nanocomposites as adsorbents for removal of diazinon from aqueous solution: isotherm and kinetic study

Shamsizadeh

Ehrampoush

Firouzabadi

et al. 2020

PRT

Self Cite

View full text Add to dashboard Cite

Purpose The purpose of this study was to the synthesis of Fe3O4@SiO2 nanocomposites and using it as an adsorbent for removal of diazinon from aqueous solutions. Structural characteristics of the synthesized magnetic nanocomposite were described by Fourier transform infrared spectroscopy and scanning electron microscopy. Design/methodology/approach The effects of different parameters including pH (2-10), contact time (1-180 min), adsorbent dosage (100-2000 mg L−1) and initial diazinon concentration (0.5–20 mg L−1) on the removal processes were studied. Finally, isotherm and kinetic and of adsorption process of diazinon onto Fe3O4@SiO2 nanocomposites were investigated. Findings The maximum removal efficiency of diazinon (96%) was found at 180 min with 1000 mg L−1 adsorbent dosage using 0.5 mg L−1 diazinon concentration at pH = 7. The experimental results revealed that data were best fit with the pseudo-second-order kinetic model (R2 = 0.971) and the adsorption capacity was 10.90 mg g−1. The adsorption isotherm was accordant to Langmuir isotherm. Originality/value In the present study, the magnetic nanocomposites were synthesized and used as an absorbent for the removal of diazinon. The developed method had advantages such as the good ability of Fe3O4@SiO2 nanocomposites to remove diazinon from aqueous solution and the magnetic separation of this absorbent that make it recoverable nanocomposite. The other advantages of these nanocomposites are rapidity, simplicity and relatively low cost.

show abstract

“…Among advanced oxidation processes, photocatalytic process due to their high degradation potential are widely used in water treatment (12). In the photocatalytic process, ultraviolet (UV) irradiation, visible light and metal catalysts are used as semiconductors (13,14). In recent years, the use of metal semiconductor photocatalyst is very important due to their easy to use in conditions of environmental and the ability to complete mineralize pollutants, in different environmental elds including water and wastewater treatment (15).…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of MnFe2O4@TiO2 magnetic nanocomposite using oleaster tree bark for efficient photocatalytic degradation of humic acid in aqueous solutions

Derakhshani

Naghizadeh

Mortazavi‐Derazkola

2022

Environ Sci Pollut Res

Self Cite

View full text Add to dashboard Cite

The presence of humic acid compounds in water resources, as one of the precursors of Trihalomethanes and Holoacetic acids, causes health problems for many communities. The aim of this study was to investigate the photocatalytic degradation e ciency of Humic Acid using MnFe 2 O 4 @TiO 2 nanoparticles produced by green synthesis method. The synthesis of metal nanoparticles using plant extracts and the study of their catalytic performance is a relatively new topic. Many chemical techniques have been proposed for the synthesis of MnFe 2 O 4 @TiO 2 nanoparticles, but green synthesis has received much attention due to its cheapness, simplicity and non-toxicity. The properties of synthesized nanoparticles were determined by SEM, FT-IR, XRD, EDS and DLS analysis. The results of the study showed that under optimal experimental conditions (pH = 3, nanocomposite dose = 0.03 g/L, humic acid initial concentration = 2 mg/L and contact time = 20 minutes) it is possible to achieve maximum degradation of humic acid. and MnFe 2 O 4 @TiO 2 nanoparticles have high e ciency for removing humic acid from aqueous solutions under UV light.

show abstract

Fabrication and characterization of magnetic cobalt ferrite nanoparticles for efficient removal of humic acid from aqueous solutions

Cited by 14 publications

References 30 publications

Active adsorption performance of planetary ball milled Saudi Arabian bentonite clay for the removal of copper ions from aqueous solution

Active adsorption performance of planetary ball milled Saudi Arabian bentonite clay for the removal of copper ions from aqueous solution

Fe₃O₄@SiO₂ magnetic nanocomposites as adsorbents for removal of diazinon from aqueous solution: isotherm and kinetic study

Biosynthesis of MnFe2O4@TiO2 magnetic nanocomposite using oleaster tree bark for efficient photocatalytic degradation of humic acid in aqueous solutions

Contact Info

Product

Resources

About

Fabrication and characterization of magnetic cobalt ferrite nanoparticles for efficient removal of humic acid from aqueous solutions

Cited by 14 publications

References 30 publications

Active adsorption performance of planetary ball milled Saudi Arabian bentonite clay for the removal of copper ions from aqueous solution

Active adsorption performance of planetary ball milled Saudi Arabian bentonite clay for the removal of copper ions from aqueous solution

Fe3O4@SiO2 magnetic nanocomposites as adsorbents for removal of diazinon from aqueous solution: isotherm and kinetic study

Biosynthesis of MnFe2O4@TiO2 magnetic nanocomposite using oleaster tree bark for efficient photocatalytic degradation of humic acid in aqueous solutions

Contact Info

Product

Resources

About

Fe₃O₄@SiO₂ magnetic nanocomposites as adsorbents for removal of diazinon from aqueous solution: isotherm and kinetic study