Removal of Hg(II) ions from aqueous solution by poly(allylamine-co-methacrylamide-co-dimethylthiourea)

Mi Young Kim; Haein Seo; Tai Gyu Lee

doi:10.1016/j.jiec.2019.12.023

Removal of Hg(II) ions from aqueous solution by poly(allylamine-co-methacrylamide-co-dimethylthiourea)

Mi Young Kim, Haein Seo, Tai Gyu Lee

Department of Chemical and Biomolecular Engineering

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

4 Citations (Scopus)

Abstract

In this study, poly(allylamine-co-methacrylamide-co-dimethylthiourea), a chelating polymer containing amino groups and thiourea, was synthesized and tested for its capacity to remove mercury ions (Hg²⁺) from aqueous solutions. The structure of the prepared polymer was analyzed and characterized by FTIR and FE-SEM. The effects of various parameters such as pH, contact time, and initial Hg concentration on Hg(II) removal were studied. The Hg(II) adsorption reached maximum capacity at equilibrium within 1 h. The Hg ions were adsorbed for 4 h at pH 7. The highest Hg(II) adsorption was obtained at pH 7 and 400 mg L⁻¹. The experimental data were fitted to the pseudo-second-order model using kinetic modeling, indicating that the mechanism was chemisorption. In addition, the experimental data were fitted to the Langmuir isotherm model, thus demonstrating that the Hg(II) adsorption process occurred through the formation of a monolayer.

Original language	English
Pages (from-to)	82-86
Number of pages	5
Journal	Journal of Industrial and Engineering Chemistry
Volume	84
DOIs	https://doi.org/10.1016/j.jiec.2019.12.023
Publication status	Published - 2020 Apr 25

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education [ NRF-2017R1D1A1B03030722 ].

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)

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title = "Removal of Hg(II) ions from aqueous solution by poly(allylamine-co-methacrylamide-co-dimethylthiourea)",

abstract = "In this study, poly(allylamine-co-methacrylamide-co-dimethylthiourea), a chelating polymer containing amino groups and thiourea, was synthesized and tested for its capacity to remove mercury ions (Hg2+) from aqueous solutions. The structure of the prepared polymer was analyzed and characterized by FTIR and FE-SEM. The effects of various parameters such as pH, contact time, and initial Hg concentration on Hg(II) removal were studied. The Hg(II) adsorption reached maximum capacity at equilibrium within 1 h. The Hg ions were adsorbed for 4 h at pH 7. The highest Hg(II) adsorption was obtained at pH 7 and 400 mg L−1. The experimental data were fitted to the pseudo-second-order model using kinetic modeling, indicating that the mechanism was chemisorption. In addition, the experimental data were fitted to the Langmuir isotherm model, thus demonstrating that the Hg(II) adsorption process occurred through the formation of a monolayer.",

author = "Kim, {Mi Young} and Haein Seo and Lee, {Tai Gyu}",

note = "Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education [ NRF-2017R1D1A1B03030722 ]. ",

year = "2020",

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doi = "10.1016/j.jiec.2019.12.023",

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journal = "Journal of Industrial and Engineering Chemistry",

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AU - Kim, Mi Young

AU - Seo, Haein

AU - Lee, Tai Gyu

N1 - Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education [ NRF-2017R1D1A1B03030722 ].

PY - 2020/4/25

Y1 - 2020/4/25

N2 - In this study, poly(allylamine-co-methacrylamide-co-dimethylthiourea), a chelating polymer containing amino groups and thiourea, was synthesized and tested for its capacity to remove mercury ions (Hg2+) from aqueous solutions. The structure of the prepared polymer was analyzed and characterized by FTIR and FE-SEM. The effects of various parameters such as pH, contact time, and initial Hg concentration on Hg(II) removal were studied. The Hg(II) adsorption reached maximum capacity at equilibrium within 1 h. The Hg ions were adsorbed for 4 h at pH 7. The highest Hg(II) adsorption was obtained at pH 7 and 400 mg L−1. The experimental data were fitted to the pseudo-second-order model using kinetic modeling, indicating that the mechanism was chemisorption. In addition, the experimental data were fitted to the Langmuir isotherm model, thus demonstrating that the Hg(II) adsorption process occurred through the formation of a monolayer.

AB - In this study, poly(allylamine-co-methacrylamide-co-dimethylthiourea), a chelating polymer containing amino groups and thiourea, was synthesized and tested for its capacity to remove mercury ions (Hg2+) from aqueous solutions. The structure of the prepared polymer was analyzed and characterized by FTIR and FE-SEM. The effects of various parameters such as pH, contact time, and initial Hg concentration on Hg(II) removal were studied. The Hg(II) adsorption reached maximum capacity at equilibrium within 1 h. The Hg ions were adsorbed for 4 h at pH 7. The highest Hg(II) adsorption was obtained at pH 7 and 400 mg L−1. The experimental data were fitted to the pseudo-second-order model using kinetic modeling, indicating that the mechanism was chemisorption. In addition, the experimental data were fitted to the Langmuir isotherm model, thus demonstrating that the Hg(II) adsorption process occurred through the formation of a monolayer.

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