Application of nano-magnesso ferrite (n-MgFe                         2                         O                         4                         ) for the removal of Co                         2+                          ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies

Varsha Srivastava; Y. C. Sharma; Mika Sillanpää

doi:10.1016/j.apsusc.2015.02.072

Application of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co ²⁺ ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies

Varsha Srivastava, Y. C. Sharma, Mika Sillanpää

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

The aim of this research is to investigate the adsorption characteristics of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co(II) ions from aqueous solution. n-MgFe ₂ O ₄ was synthesized by precipitation method. XRD of synthesized particles reveals the formation of single-phase n-MgFe ₂ O ₄ nanoparticles. TEM confirms the formation of particle size in the range of 25-35 nm. AFM and SEM analysis also support the TEM result. BET surface area of nanoparticles was determined to be 53.83 m ² /g. The adsorption of Co(II) onto n-MgFe ₂ O ₄ was found to be dependent on pH and the removal increased in alkaline medium. Co(II) adsorption followed pseudo-second-order model. Thermodynamic study showed that the adsorption process was endothermic and spontaneous. The equilibrium adsorption data was analyzed by two parameters and three parameters isotherm. Langmuir adsorption capacity was determined to be 67.41 mg/g. Chi-square test, standard deviations and the sum of squares of the errors (SSE) were evaluated to find out the better isotherm model. Desorption and reusability test suggested that n-MgFe ₂ O ₄ can be efficiently used up to three adsorption-desorption cycles. The findings of the present study suggest that n-MgFe ₂ O ₄ is very efficient for the adsorption of Co(II) ions. Adsorption efficiency of n-MgFe ₂ O ₄ for Co(II) has not yet been studied, so this study can be helpful for the treatment of Co(II) rich wastewater in near future.

Original language	English
Pages (from-to)	42-54
Number of pages	13
Journal	Applied Surface Science
Volume	338
DOIs	https://doi.org/10.1016/j.apsusc.2015.02.072
Publication status	Published - 30 May 2015
Externally published	Yes

Keywords

Adsorption
Cobalt
Isotherm
Nanoferrite
Thermodynamic study

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apsusc.2015.02.072

Cite this

Srivastava, V., Sharma, Y. C., & Sillanpää, M. (2015). Application of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co ²⁺ ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies. Applied Surface Science, 338, 42-54. https://doi.org/10.1016/j.apsusc.2015.02.072

Srivastava, Varsha ; Sharma, Y. C. ; Sillanpää, Mika. / Application of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co ²⁺ ions from synthetic wastewater : Kinetic, equilibrium and thermodynamic studies. In: Applied Surface Science. 2015 ; Vol. 338. pp. 42-54.

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title = "Application of nano-magnesso ferrite (n-MgFe 2 O 4 ) for the removal of Co 2+ ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies",

abstract = " The aim of this research is to investigate the adsorption characteristics of nano-magnesso ferrite (n-MgFe 2 O 4 ) for the removal of Co(II) ions from aqueous solution. n-MgFe 2 O 4 was synthesized by precipitation method. XRD of synthesized particles reveals the formation of single-phase n-MgFe 2 O 4 nanoparticles. TEM confirms the formation of particle size in the range of 25-35 nm. AFM and SEM analysis also support the TEM result. BET surface area of nanoparticles was determined to be 53.83 m 2 /g. The adsorption of Co(II) onto n-MgFe 2 O 4 was found to be dependent on pH and the removal increased in alkaline medium. Co(II) adsorption followed pseudo-second-order model. Thermodynamic study showed that the adsorption process was endothermic and spontaneous. The equilibrium adsorption data was analyzed by two parameters and three parameters isotherm. Langmuir adsorption capacity was determined to be 67.41 mg/g. Chi-square test, standard deviations and the sum of squares of the errors (SSE) were evaluated to find out the better isotherm model. Desorption and reusability test suggested that n-MgFe 2 O 4 can be efficiently used up to three adsorption-desorption cycles. The findings of the present study suggest that n-MgFe 2 O 4 is very efficient for the adsorption of Co(II) ions. Adsorption efficiency of n-MgFe 2 O 4 for Co(II) has not yet been studied, so this study can be helpful for the treatment of Co(II) rich wastewater in near future.",

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Srivastava, V, Sharma, YC & Sillanpää, M 2015, 'Application of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co ²⁺ ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies', Applied Surface Science, vol. 338, pp. 42-54. https://doi.org/10.1016/j.apsusc.2015.02.072

Application of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co ²⁺ ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies. / Srivastava, Varsha; Sharma, Y. C.; Sillanpää, Mika.
In: Applied Surface Science, Vol. 338, 30.05.2015, p. 42-54.

Research output: Contribution to journal › Article › peer-review

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T1 - Application of nano-magnesso ferrite (n-MgFe 2 O 4 ) for the removal of Co 2+ ions from synthetic wastewater

T2 - Kinetic, equilibrium and thermodynamic studies

AU - Srivastava, Varsha

AU - Sharma, Y. C.

AU - Sillanpää, Mika

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N2 - The aim of this research is to investigate the adsorption characteristics of nano-magnesso ferrite (n-MgFe 2 O 4 ) for the removal of Co(II) ions from aqueous solution. n-MgFe 2 O 4 was synthesized by precipitation method. XRD of synthesized particles reveals the formation of single-phase n-MgFe 2 O 4 nanoparticles. TEM confirms the formation of particle size in the range of 25-35 nm. AFM and SEM analysis also support the TEM result. BET surface area of nanoparticles was determined to be 53.83 m 2 /g. The adsorption of Co(II) onto n-MgFe 2 O 4 was found to be dependent on pH and the removal increased in alkaline medium. Co(II) adsorption followed pseudo-second-order model. Thermodynamic study showed that the adsorption process was endothermic and spontaneous. The equilibrium adsorption data was analyzed by two parameters and three parameters isotherm. Langmuir adsorption capacity was determined to be 67.41 mg/g. Chi-square test, standard deviations and the sum of squares of the errors (SSE) were evaluated to find out the better isotherm model. Desorption and reusability test suggested that n-MgFe 2 O 4 can be efficiently used up to three adsorption-desorption cycles. The findings of the present study suggest that n-MgFe 2 O 4 is very efficient for the adsorption of Co(II) ions. Adsorption efficiency of n-MgFe 2 O 4 for Co(II) has not yet been studied, so this study can be helpful for the treatment of Co(II) rich wastewater in near future.

AB - The aim of this research is to investigate the adsorption characteristics of nano-magnesso ferrite (n-MgFe 2 O 4 ) for the removal of Co(II) ions from aqueous solution. n-MgFe 2 O 4 was synthesized by precipitation method. XRD of synthesized particles reveals the formation of single-phase n-MgFe 2 O 4 nanoparticles. TEM confirms the formation of particle size in the range of 25-35 nm. AFM and SEM analysis also support the TEM result. BET surface area of nanoparticles was determined to be 53.83 m 2 /g. The adsorption of Co(II) onto n-MgFe 2 O 4 was found to be dependent on pH and the removal increased in alkaline medium. Co(II) adsorption followed pseudo-second-order model. Thermodynamic study showed that the adsorption process was endothermic and spontaneous. The equilibrium adsorption data was analyzed by two parameters and three parameters isotherm. Langmuir adsorption capacity was determined to be 67.41 mg/g. Chi-square test, standard deviations and the sum of squares of the errors (SSE) were evaluated to find out the better isotherm model. Desorption and reusability test suggested that n-MgFe 2 O 4 can be efficiently used up to three adsorption-desorption cycles. The findings of the present study suggest that n-MgFe 2 O 4 is very efficient for the adsorption of Co(II) ions. Adsorption efficiency of n-MgFe 2 O 4 for Co(II) has not yet been studied, so this study can be helpful for the treatment of Co(II) rich wastewater in near future.

KW - Adsorption

KW - Cobalt

KW - Isotherm

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Srivastava V, Sharma YC, Sillanpää M. Application of nano-magnesso ferrite (n-MgFe ₂ O ₄ ) for the removal of Co ²⁺ ions from synthetic wastewater: Kinetic, equilibrium and thermodynamic studies. Applied Surface Science. 2015 May 30;338:42-54. doi: 10.1016/j.apsusc.2015.02.072