Application of spinel ferrite nanoparticles in water and wastewater treatment: A review

Kefeni, Kebede K.; Mamba, Bhekie B.; Msagati, Titus A.M.

doi:10.1016/j.seppur.2017.07.015

Cited by 471 publications

(172 citation statements)

References 303 publications

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“…Due to useful magnetic, electrical and optical properties of ferrite nanoparticles, researchers are taking interest in the synthesis of ferrite nanoparticles and making their use in a lot of applications that include medical field, information technology, antenna, microwave absorbing materials, biosensors and many electronic applications [207][208][209][210][211][212][213][214][215][216]. Many reviews are there about the synthesis, properties and applications of ferrites in biomedical [217][218][219], catalyst [220,221] and wastewater treatment [200,[222][223][224][225].…”

Section: Applications Of Mnzn Ferritesmentioning

confidence: 99%

A review on MnZn ferrites: Synthesis, characterization and applications

Thakur

Chahar

Taneja

et al. 2020

Ceramics International

270

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Researchers are taking great interest in the synthesis and characterization of MnZn ferrites due to their wide range of applications in many areas. MnZn ferrites are a class of soft magnetic materials that have very good electrical, magnetic and optical properties. The properties of MnZn ferrites include high value of resistivity, permeability, permittivity, saturation magnetization, low power losses and coercivity. The above mentioned advantageous features of MnZn ferrites make them suitable for the use in various applications. In biomedical field these ferrites are used for cancer treatment and MRI. MnZn ferrites are also used in electronic applications for making transformers, transducers and inductors. These ferrites are also used in magnetic fluids, sensors and biosensors. MnZn ferrite is highly useful material for several electrical and electronic applications. It finds applications in almost every household appliances like mobile charger, LED bulb, TV, refrigerator, juicer mixer, washing machine, iron, microwave oven, mobile, laptop, desktop, printer and so on. Therefore, the present review focuses on different techniques for synthesis of MnZn ferrites in literature, their characterization tools, effect of doping on the properties of MnZn ferrite and finally we will discuss about their applications.

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Section: Applications Of Mnzn Ferritesmentioning

confidence: 99%

A review on MnZn ferrites: Synthesis, characterization and applications

Thakur

Chahar

Taneja

et al. 2020

Ceramics International

270

View full text Add to dashboard Cite

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“…[1][2][3]. Most of these organic dyes are mutagenic, carcinogenic and toxic [4,5]. Therefore, discharging of such dyestuffs into water systems is considered as the most worldwide environmental problem [6].…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, different techniques including membrane filtration, coagulation-flocculation, photocatalytic degradation, chemical oxidation and adsorption, etc. [2][3][4][5][6][7][8] have been developed for removing very toxic organic dyes from aqueous solutions. Among these methods, adsorption is superior owing to its unique properties including ease of operation, low operational cost, simplicity of design, insensitivity to toxic pollutants, high removal efficiency and availability of various adsorbent types, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Among these methods, adsorption is superior owing to its unique properties including ease of operation, low operational cost, simplicity of design, insensitivity to toxic pollutants, high removal efficiency and availability of various adsorbent types, etc. [2,5,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Activated carbon (AC) is widely used as adsorbent material for treating dye-contaminated water owing to its large surface area, porous structure and good adsorption performance, etc. However, the high production cost, sludge formation, disposal, recovery and regeneration are still remaining the drawbacks that limit the applications of AC in water treatment technologies [2][3][4][5][6][7][8][9]. In addition, the separation of AC using the conventional filtration method usually results in the loss of AC and blockage of the filter [12].…”

Section: Introductionmentioning

confidence: 99%

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Untitled

2020

Chem. Methodol.

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In this study, Zn-substituted cobalt ferrite nanoparticles (CoFe1.9Zn0.1O4, CFZ) were successfully synthesized via a combined EDTA-citrate sol-gel process. The synthesized CoFe1.9Zn0.1O4 nanoparticles were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), point zero charge (pHpzc) and scanning electron microscopy (SEM). The adsorption experiments of methylene blue (MB) onto CFZ surface were conducted in batch mode. The experiments were conducted under different conditions (contact time, adsorbent dosage, initial pH solution, solution temperature and initial dye concentration). The experimental data were better fitted to pseudo-second-order (PSO) kinetic model (R 2 =0.9990). In addition, Langmuir isotherm (R 2 =0.9906) was the best model to describe the experimental adsorption data. The maximum adsorbed amount of MB (qmax) per unit mass of adsorbent was about 27.79 mg/g. The adsorption thermodynamics (i.e., ΔG°, ΔH°, ΔS°) revealed that the proposed adsorption process is feasible, spontaneous and exothermic in nature. The obtained results suggest that CFZ is a promising material used as an adsorbent for very toxic pollutants from aqueous solutions.

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