Adsorption of Cu2+ and Ni2+ by tripolyphosphate-crosslinked chitosan-modified montmorillonite

Tomohito Kameda; Reina Honda; Shogo Kumagai; Yuko Saito; Toshiaki Yoshioka

doi:10.1016/j.jssc.2019.06.002

Adsorption of Cu²⁺ and Ni²⁺ by tripolyphosphate-crosslinked chitosan-modified montmorillonite

Tomohito Kameda, Reina Honda, Shogo Kumagai, Yuko Saito, Toshiaki Yoshioka

Tohoku University

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

29 Citations (Scopus)

Abstract

The adsorption of Cu²⁺ and Ni²⁺ on synthesized tripolyphosphate-crosslinked-chitosan-modified montmorillonite (TPP-crosslinked-CTS-modified MMT) was examined by kinetic and equilibrium studies. The adsorption followed a pseudo-second order kinetics. Based on the activation energies, chemisorption due to electron transfer between TPP-crosslinked-CTS-modified MMT and the Cu²⁺ and Ni²⁺ cations was concluded to be the rate-determining step. Equilibrium analysis for the adsorption of each cation shows a good fit to the Langmuir equation. The adsorption of metal cations onto TPP-crosslinked-CTS-modified MMT proceeds because of the cation adsorption capacity of MMT, complexation with CTS, and complexation with the crosslinking agent (TPP). The selectivity toward Cu²⁺ was high because of the selective adsorption of this cation by CTS.

Original language	English
Pages (from-to)	143-148
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	277
DOIs	https://doi.org/10.1016/j.jssc.2019.06.002
Publication status	Published - 2019 Sept

Keywords

Adsorption
Chitosan-modified montmorillonite
Heavy metal ions
Tripolyphosphate-crosslinking

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10.1016/j.jssc.2019.06.002

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title = "Adsorption of Cu2+ and Ni2+ by tripolyphosphate-crosslinked chitosan-modified montmorillonite",

abstract = "The adsorption of Cu2+ and Ni2+ on synthesized tripolyphosphate-crosslinked-chitosan-modified montmorillonite (TPP-crosslinked-CTS-modified MMT) was examined by kinetic and equilibrium studies. The adsorption followed a pseudo-second order kinetics. Based on the activation energies, chemisorption due to electron transfer between TPP-crosslinked-CTS-modified MMT and the Cu2+ and Ni2+ cations was concluded to be the rate-determining step. Equilibrium analysis for the adsorption of each cation shows a good fit to the Langmuir equation. The adsorption of metal cations onto TPP-crosslinked-CTS-modified MMT proceeds because of the cation adsorption capacity of MMT, complexation with CTS, and complexation with the crosslinking agent (TPP). The selectivity toward Cu2+ was high because of the selective adsorption of this cation by CTS.",

keywords = "Adsorption, Chitosan-modified montmorillonite, Heavy metal ions, Tripolyphosphate-crosslinking",

author = "Tomohito Kameda and Reina Honda and Shogo Kumagai and Yuko Saito and Toshiaki Yoshioka",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number 26281036 . Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",

year = "2019",

month = sep,

doi = "10.1016/j.jssc.2019.06.002",

language = "English",

volume = "277",

pages = "143--148",

journal = "Journal of Solid State Chemistry",

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T1 - Adsorption of Cu2+ and Ni2+ by tripolyphosphate-crosslinked chitosan-modified montmorillonite

AU - Kameda, Tomohito

AU - Honda, Reina

AU - Kumagai, Shogo

AU - Saito, Yuko

AU - Yoshioka, Toshiaki

PY - 2019/9

Y1 - 2019/9

N2 - The adsorption of Cu2+ and Ni2+ on synthesized tripolyphosphate-crosslinked-chitosan-modified montmorillonite (TPP-crosslinked-CTS-modified MMT) was examined by kinetic and equilibrium studies. The adsorption followed a pseudo-second order kinetics. Based on the activation energies, chemisorption due to electron transfer between TPP-crosslinked-CTS-modified MMT and the Cu2+ and Ni2+ cations was concluded to be the rate-determining step. Equilibrium analysis for the adsorption of each cation shows a good fit to the Langmuir equation. The adsorption of metal cations onto TPP-crosslinked-CTS-modified MMT proceeds because of the cation adsorption capacity of MMT, complexation with CTS, and complexation with the crosslinking agent (TPP). The selectivity toward Cu2+ was high because of the selective adsorption of this cation by CTS.

AB - The adsorption of Cu2+ and Ni2+ on synthesized tripolyphosphate-crosslinked-chitosan-modified montmorillonite (TPP-crosslinked-CTS-modified MMT) was examined by kinetic and equilibrium studies. The adsorption followed a pseudo-second order kinetics. Based on the activation energies, chemisorption due to electron transfer between TPP-crosslinked-CTS-modified MMT and the Cu2+ and Ni2+ cations was concluded to be the rate-determining step. Equilibrium analysis for the adsorption of each cation shows a good fit to the Langmuir equation. The adsorption of metal cations onto TPP-crosslinked-CTS-modified MMT proceeds because of the cation adsorption capacity of MMT, complexation with CTS, and complexation with the crosslinking agent (TPP). The selectivity toward Cu2+ was high because of the selective adsorption of this cation by CTS.

KW - Adsorption

KW - Chitosan-modified montmorillonite

KW - Heavy metal ions

KW - Tripolyphosphate-crosslinking

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DO - 10.1016/j.jssc.2019.06.002

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SP - 143

EP - 148

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

Adsorption of Cu²⁺ and Ni²⁺ by tripolyphosphate-crosslinked chitosan-modified montmorillonite

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Keywords

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