Comparison of surface-modified adsorbents for phosphate removal in water

Jae Woo Choi; Seung Yeon Lee; Sang Hyup Lee; Ji Eun Kim; Ki Young Park; Dong Ju Kim; Seok Won Hong

doi:10.1007/s11270-011-1072-6

Comparison of surface-modified adsorbents for phosphate removal in water

Jae Woo Choi, Seung Yeon Lee, Sang Hyup Lee, Ji Eun Kim, Ki Young Park, Dong Ju Kim, Seok Won Hong

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

29 Citations (Scopus)

Abstract

Three novel composite adsorbents, sulfate-coated zeolite (SCZ), hydrotalcite (SCH), and activated alumina (SCAA), were characterized and employed for the removal of phosphate from aqueous solution using equilibrium and kinetic batch experiments. Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction spectrum were used to study the surface characteristics of the coated layer. Equilibrium tests showed that the adsorption of phosphate followed both Langmuir and Freundlich isotherms. The powder-type SCZ was better for phosphate removal (maximum binding energy, β=111.49 mg g ^-1) compared to hydrotalcite and activated alumina. The adsorption of phosphate was considered to take place mainly by ion exchange. The kinetic data followed a pseudo-second-order kinetic model. The initial adsorption of phosphate onto the sulfate-coated adsorbents was fast, indicating that the sulfate-coated materials developed in this study can be used as promising adsorbents for the removal of phosphate from wastewater or sewage.

Original language	English
Pages (from-to)	2881-2890
Number of pages	10
Journal	Water, Air, and Soil Pollution
Volume	223
Issue number	6
DOIs	https://doi.org/10.1007/s11270-011-1072-6
Publication status	Published - 2012 Jul

Bibliographical note

Funding Information:
Acknowledgments The subject is supported by Korea Ministry of Environment as “Global Top Project” (Project No.: GT-11-B-01-011-1).

Keywords

Activated alumina
Hydrotalcite
Phosphate
Sulfate coated
Zeolite

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Ecological Modelling
Water Science and Technology
Pollution

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title = "Comparison of surface-modified adsorbents for phosphate removal in water",

abstract = "Three novel composite adsorbents, sulfate-coated zeolite (SCZ), hydrotalcite (SCH), and activated alumina (SCAA), were characterized and employed for the removal of phosphate from aqueous solution using equilibrium and kinetic batch experiments. Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction spectrum were used to study the surface characteristics of the coated layer. Equilibrium tests showed that the adsorption of phosphate followed both Langmuir and Freundlich isotherms. The powder-type SCZ was better for phosphate removal (maximum binding energy, β=111.49 mg g -1) compared to hydrotalcite and activated alumina. The adsorption of phosphate was considered to take place mainly by ion exchange. The kinetic data followed a pseudo-second-order kinetic model. The initial adsorption of phosphate onto the sulfate-coated adsorbents was fast, indicating that the sulfate-coated materials developed in this study can be used as promising adsorbents for the removal of phosphate from wastewater or sewage.",

keywords = "Activated alumina, Hydrotalcite, Phosphate, Sulfate coated, Zeolite",

author = "Choi, {Jae Woo} and Lee, {Seung Yeon} and Lee, {Sang Hyup} and Kim, {Ji Eun} and Park, {Ki Young} and Kim, {Dong Ju} and Hong, {Seok Won}",

note = "Funding Information: Acknowledgments The subject is supported by Korea Ministry of Environment as “Global Top Project” (Project No.: GT-11-B-01-011-1).",

year = "2012",

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doi = "10.1007/s11270-011-1072-6",

language = "English",

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AU - Choi, Jae Woo

AU - Lee, Seung Yeon

AU - Lee, Sang Hyup

AU - Kim, Ji Eun

AU - Park, Ki Young

AU - Kim, Dong Ju

AU - Hong, Seok Won

N1 - Funding Information: Acknowledgments The subject is supported by Korea Ministry of Environment as “Global Top Project” (Project No.: GT-11-B-01-011-1).

PY - 2012/7

Y1 - 2012/7

N2 - Three novel composite adsorbents, sulfate-coated zeolite (SCZ), hydrotalcite (SCH), and activated alumina (SCAA), were characterized and employed for the removal of phosphate from aqueous solution using equilibrium and kinetic batch experiments. Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction spectrum were used to study the surface characteristics of the coated layer. Equilibrium tests showed that the adsorption of phosphate followed both Langmuir and Freundlich isotherms. The powder-type SCZ was better for phosphate removal (maximum binding energy, β=111.49 mg g -1) compared to hydrotalcite and activated alumina. The adsorption of phosphate was considered to take place mainly by ion exchange. The kinetic data followed a pseudo-second-order kinetic model. The initial adsorption of phosphate onto the sulfate-coated adsorbents was fast, indicating that the sulfate-coated materials developed in this study can be used as promising adsorbents for the removal of phosphate from wastewater or sewage.

AB - Three novel composite adsorbents, sulfate-coated zeolite (SCZ), hydrotalcite (SCH), and activated alumina (SCAA), were characterized and employed for the removal of phosphate from aqueous solution using equilibrium and kinetic batch experiments. Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction spectrum were used to study the surface characteristics of the coated layer. Equilibrium tests showed that the adsorption of phosphate followed both Langmuir and Freundlich isotherms. The powder-type SCZ was better for phosphate removal (maximum binding energy, β=111.49 mg g -1) compared to hydrotalcite and activated alumina. The adsorption of phosphate was considered to take place mainly by ion exchange. The kinetic data followed a pseudo-second-order kinetic model. The initial adsorption of phosphate onto the sulfate-coated adsorbents was fast, indicating that the sulfate-coated materials developed in this study can be used as promising adsorbents for the removal of phosphate from wastewater or sewage.

KW - Activated alumina

KW - Hydrotalcite

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IS - 6

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Comparison of surface-modified adsorbents for phosphate removal in water

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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