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Magnetite nanoparticles as sorbents for dye removal: a review

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Abstract

Pollution of industrial wastewaters containing dyes is a major concern for health in many countries, calling for advanced remediation techniques. Here, we review dye classification, toxicity, and removal with focus on adsorption using nanomaterials and magnetic nanoparticles. We present isotherm modeling and kinetic studies. We discuss factors controlling dye adsorption, such as pH, dye concentration, adsorbent amount, and temperature. Adsorption using magnetic nanoparticles appear as a simple and cost-effective technique. Removal efficiency increases with adsorbent concentration but declines sharply with increasing pH. Temperature is also highly influencing the removal.

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© Copyright RSC Publications 2015. (b) Transmission electron microscopy image of bare Fe3O4 nanoparticles (Absalan et al. 2011) © Copyright Elsevier 2011. (c) Scanning electron microscopy image of bare Fe3O4 nanoparticles (Keyhanian et al. 2011) © Copyright Elsevier 2011

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© Copyright ACS Publications 2014

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Copyright © ACS Publications 2014. (b) X-ray diffraction (XRD) patterns of (A) magnetite (Fe3O4) and (B) ionic liquid-immobilized magnetite (Absalan et al. 2011) © Copyright Elsevier 2011

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© Copyright Elsevier 2011

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© Copyright RSC Publications 2012

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Copyright © ACS Publications 2014

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Abbreviations

BET:

Brunauer–Emmett–Teller

CMCH:

Carboxymethylated chitosan

CPTES:

3-Chloropropyltriethoxysilane

CTAB:

Cetyltrimethylammonium bromide

D–R:

Dubinin–Radushkevich model

EMCN:

Ethylenediamine-modified magnetic chitosan nanoparticles

FHH:

Frenkel–Halsey–Hill

FTIR:

Fourier transform infrared spectroscopy

HHSS:

Hierarchical hollow silica spheres

HRTEM:

High-resolution transmission electron microscopy

MB:

Methylene blue

MNPs:

Magnetite nanoparticles

NPs:

Nanoparticles

Ms:

Specific saturation magnetization value

MSCM:

Magnetic mesoporous silica-coated nanostructures

PAR:

4-(2-Pyridylazo) resorcinol

PFO:

Pseudo-first-order

PSO:

Pseudo-second-order

RSD %:

Relative standard deviation percent

SDS:

Sodium dodecyl sulfate

SEM:

Scanning electron microscopy

TEM:

Transmission electron microscopy

VSM:

Vibrating-sample magnetometer

XRD:

X-ray diffraction

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Acknowledgements

The authors are thankful to Satyaki Chatterjee and Sanjukta Mandol for co-operation in proofreading.

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Correspondence to Vivek Mishra.

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Panda, S.K., Aggarwal, I., Kumar, H. et al. Magnetite nanoparticles as sorbents for dye removal: a review. Environ Chem Lett 19, 2487–2525 (2021). https://doi.org/10.1007/s10311-020-01173-9

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  • DOI: https://doi.org/10.1007/s10311-020-01173-9

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