Adsorption characteristics of mesoporous silica SBA-15 synthesized from mine tailing

Seongmin Kim, Yosep Han, Jayhyun Park, Jaikoo Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Abstract Mesoporous silica SBA-15 was successfully synthesized using the silicate solution extracted from mine tailings. The synthesized SBA15 was functionalized with 3-mercaptopropyl-trimethoxysilane, which was characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, element analysis, and transmission electron microscopy. The properties of the synthesized mesoporous materials were compared with those prepared from silica precursor tetraethyl-orthosilicate. The functionalized SBA-15 was tested as adsorbents to remove metal ions from aqueous solution. The highest adsorption capacities were found to be 33.25 mg/g of Cu(II), 20.98 mg/g of Cd(II) and 35.04 mg/g of Pb(II) for the functionalized SBA-15 synthesized from mine tailings. The results of adsorption of the functionalized adsorbents were successfully fitted to the Langmuir adsorption isotherm and pseudo-second order kinetics model (R2 > 0.99).

Original languageEnglish
Article number2752
Pages (from-to)88-94
Number of pages7
JournalInternational Journal of Mineral Processing
Volume140
DOIs
StatePublished - 2015 Jun 3

Fingerprint

Tailings
Silicon Dioxide
tailings
silica
Silica
adsorption
Adsorption
Adsorbents
Silicates
Mesoporous materials
orthosilicate
Adsorption isotherms
Fourier transform infrared spectroscopy
Metal ions
Desorption
Nitrogen
FTIR spectroscopy
Transmission electron microscopy
transmission electron microscopy
desorption

Keywords

  • Adsorption
  • Functional groups
  • Mesoporous silica
  • Mine tailings

Cite this

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abstract = "Abstract Mesoporous silica SBA-15 was successfully synthesized using the silicate solution extracted from mine tailings. The synthesized SBA15 was functionalized with 3-mercaptopropyl-trimethoxysilane, which was characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, element analysis, and transmission electron microscopy. The properties of the synthesized mesoporous materials were compared with those prepared from silica precursor tetraethyl-orthosilicate. The functionalized SBA-15 was tested as adsorbents to remove metal ions from aqueous solution. The highest adsorption capacities were found to be 33.25 mg/g of Cu(II), 20.98 mg/g of Cd(II) and 35.04 mg/g of Pb(II) for the functionalized SBA-15 synthesized from mine tailings. The results of adsorption of the functionalized adsorbents were successfully fitted to the Langmuir adsorption isotherm and pseudo-second order kinetics model (R2 > 0.99).",
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Adsorption characteristics of mesoporous silica SBA-15 synthesized from mine tailing. / Kim, Seongmin; Han, Yosep; Park, Jayhyun; Park, Jaikoo.

In: International Journal of Mineral Processing, Vol. 140, 2752, 03.06.2015, p. 88-94.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Adsorption characteristics of mesoporous silica SBA-15 synthesized from mine tailing

AU - Kim, Seongmin

AU - Han, Yosep

AU - Park, Jayhyun

AU - Park, Jaikoo

PY - 2015/6/3

Y1 - 2015/6/3

N2 - Abstract Mesoporous silica SBA-15 was successfully synthesized using the silicate solution extracted from mine tailings. The synthesized SBA15 was functionalized with 3-mercaptopropyl-trimethoxysilane, which was characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, element analysis, and transmission electron microscopy. The properties of the synthesized mesoporous materials were compared with those prepared from silica precursor tetraethyl-orthosilicate. The functionalized SBA-15 was tested as adsorbents to remove metal ions from aqueous solution. The highest adsorption capacities were found to be 33.25 mg/g of Cu(II), 20.98 mg/g of Cd(II) and 35.04 mg/g of Pb(II) for the functionalized SBA-15 synthesized from mine tailings. The results of adsorption of the functionalized adsorbents were successfully fitted to the Langmuir adsorption isotherm and pseudo-second order kinetics model (R2 > 0.99).

AB - Abstract Mesoporous silica SBA-15 was successfully synthesized using the silicate solution extracted from mine tailings. The synthesized SBA15 was functionalized with 3-mercaptopropyl-trimethoxysilane, which was characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, element analysis, and transmission electron microscopy. The properties of the synthesized mesoporous materials were compared with those prepared from silica precursor tetraethyl-orthosilicate. The functionalized SBA-15 was tested as adsorbents to remove metal ions from aqueous solution. The highest adsorption capacities were found to be 33.25 mg/g of Cu(II), 20.98 mg/g of Cd(II) and 35.04 mg/g of Pb(II) for the functionalized SBA-15 synthesized from mine tailings. The results of adsorption of the functionalized adsorbents were successfully fitted to the Langmuir adsorption isotherm and pseudo-second order kinetics model (R2 > 0.99).

KW - Adsorption

KW - Functional groups

KW - Mesoporous silica

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