Development of Synthetic Magnetic Zeolite Adsorbents and Application to Ammonium Ion Removal

Yuki Kamimoto; Takeshi Hagio; Yong Jun Jung; Ryoichi Ichino; Kyungik Gil

doi:10.1007/s12205-020-2185-5

Development of Synthetic Magnetic Zeolite Adsorbents and Application to Ammonium Ion Removal

Yuki Kamimoto, Takeshi Hagio, Yong Jun Jung, Ryoichi Ichino, Kyungik Gil

Dept. of Civil Engineering

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

11 Scopus citations

Abstract

Synthetic magnetic zeolite with Fe₃O₄ was developed and its adsorption performance of ammonium ions was examined. The influence of pH levels, Fe₃O₄ content of the magnetic zeolite, magnetization curve of the magnetic zeolite and isotherm curve were examined in batch type experiments. Magnetic zeolite synthesized by a hydrothermal process was observed with less than 12.6 wt% of Fe₃O₄ content by scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis. With the optimum pH level around 8, q_e decreases linearly with the increase of Fe₃O₄ content. Additionally, the adsorption isotherm of ammonium ions is approximated by a Langmuir equation when the maximum adsorption was obtained at about 1.60 mmolg⁻¹. Such processes as the substitution and thermal desorption methods were successfully introduced to regenerate the magnetic zeolite saturated by ammonium ions, which is shown to be easily separated by magnetic force. Thus, the magnetic zeolite is a potential adsorbent for the removal of ammonium ions with an easy separation method using a magnetic process.

Original language	English
Pages (from-to)	1395-1399
Number of pages	5
Journal	KSCE Journal of Civil Engineering
Volume	24
Issue number	5
DOIs	https://doi.org/10.1007/s12205-020-2185-5
State	Published - 1 May 2020

Keywords

Ammonium ion
Eutrophication
Magnetic separation
Regeneration
Zeolite

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title = "Development of Synthetic Magnetic Zeolite Adsorbents and Application to Ammonium Ion Removal",

abstract = "Synthetic magnetic zeolite with Fe3O4 was developed and its adsorption performance of ammonium ions was examined. The influence of pH levels, Fe3O4 content of the magnetic zeolite, magnetization curve of the magnetic zeolite and isotherm curve were examined in batch type experiments. Magnetic zeolite synthesized by a hydrothermal process was observed with less than 12.6 wt\% of Fe3O4 content by scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis. With the optimum pH level around 8, qe decreases linearly with the increase of Fe3O4 content. Additionally, the adsorption isotherm of ammonium ions is approximated by a Langmuir equation when the maximum adsorption was obtained at about 1.60 mmolg−1. Such processes as the substitution and thermal desorption methods were successfully introduced to regenerate the magnetic zeolite saturated by ammonium ions, which is shown to be easily separated by magnetic force. Thus, the magnetic zeolite is a potential adsorbent for the removal of ammonium ions with an easy separation method using a magnetic process.",

keywords = "Ammonium ion, Eutrophication, Magnetic separation, Regeneration, Zeolite",

author = "Yuki Kamimoto and Takeshi Hagio and Jung, \{Yong Jun\} and Ryoichi Ichino and Kyungik Gil",

note = "Publisher Copyright: {\textcopyright} 2020, Korean Society of Civil Engineers.",

year = "2020",

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doi = "10.1007/s12205-020-2185-5",

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T1 - Development of Synthetic Magnetic Zeolite Adsorbents and Application to Ammonium Ion Removal

AU - Kamimoto, Yuki

AU - Hagio, Takeshi

AU - Jung, Yong Jun

AU - Ichino, Ryoichi

AU - Gil, Kyungik

PY - 2020/5/1

Y1 - 2020/5/1

N2 - Synthetic magnetic zeolite with Fe3O4 was developed and its adsorption performance of ammonium ions was examined. The influence of pH levels, Fe3O4 content of the magnetic zeolite, magnetization curve of the magnetic zeolite and isotherm curve were examined in batch type experiments. Magnetic zeolite synthesized by a hydrothermal process was observed with less than 12.6 wt% of Fe3O4 content by scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis. With the optimum pH level around 8, qe decreases linearly with the increase of Fe3O4 content. Additionally, the adsorption isotherm of ammonium ions is approximated by a Langmuir equation when the maximum adsorption was obtained at about 1.60 mmolg−1. Such processes as the substitution and thermal desorption methods were successfully introduced to regenerate the magnetic zeolite saturated by ammonium ions, which is shown to be easily separated by magnetic force. Thus, the magnetic zeolite is a potential adsorbent for the removal of ammonium ions with an easy separation method using a magnetic process.

AB - Synthetic magnetic zeolite with Fe3O4 was developed and its adsorption performance of ammonium ions was examined. The influence of pH levels, Fe3O4 content of the magnetic zeolite, magnetization curve of the magnetic zeolite and isotherm curve were examined in batch type experiments. Magnetic zeolite synthesized by a hydrothermal process was observed with less than 12.6 wt% of Fe3O4 content by scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis. With the optimum pH level around 8, qe decreases linearly with the increase of Fe3O4 content. Additionally, the adsorption isotherm of ammonium ions is approximated by a Langmuir equation when the maximum adsorption was obtained at about 1.60 mmolg−1. Such processes as the substitution and thermal desorption methods were successfully introduced to regenerate the magnetic zeolite saturated by ammonium ions, which is shown to be easily separated by magnetic force. Thus, the magnetic zeolite is a potential adsorbent for the removal of ammonium ions with an easy separation method using a magnetic process.

KW - Ammonium ion

KW - Eutrophication

KW - Magnetic separation

KW - Regeneration

KW - Zeolite

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JO - KSCE Journal of Civil Engineering

JF - KSCE Journal of Civil Engineering

IS - 5

ER -

Development of Synthetic Magnetic Zeolite Adsorbents and Application to Ammonium Ion Removal

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