Polyethylenimine-modified mesoporous silica adsorbent for simultaneous removal of Cd(II) and Ni(II) from aqueous solution

Amit K. Thakur; Grace M. Nisola; Lawrence A. Limjuco; Khino J. Parohinog; Rey Eliseo C. Torrejos; Vinod K. Shahi; Wook Jin Chung

doi:10.1016/j.jiec.2017.01.019

Polyethylenimine-modified mesoporous silica adsorbent for simultaneous removal of Cd(II) and Ni(II) from aqueous solution

Amit K. Thakur, Grace M. Nisola, Lawrence A. Limjuco, Khino J. Parohinog, Rey Eliseo C. Torrejos, Vinod K. Shahi, Wook Jin Chung

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

74 Scopus citations

Abstract

Nano-spherical amine-rich polyethylenimine (PEI) grafted on mesoporous silica (MCM-41) (PEI/MCM-41) was developed for Cd(II) and Ni(II) removal from water. Characterization of PEI/MCM-41 using various techniques confirms its successful fabrication. Adsorption results reveal that pH and adsorbent dosage must be controlled for maximum removal. The adsorption rate was pseudo-second-order, and fitted well with Langmuir and Freundlich isotherms at equilibrium. The adsorption was thermodynamically spontaneous, endothermic and favourable. Adsorption capacities of 156.0 mg g⁻¹ Cd(II) and 139.7 mg g⁻¹ Ni(II) were on par with other high performing reported adsorbents. The PEI/MCM-41 was successfully reused demonstrating its potential for heavy metal decontamination application.

Original language	English
Pages (from-to)	133-144
Number of pages	12
Journal	Journal of Industrial and Engineering Chemistry
Volume	49
DOIs	https://doi.org/10.1016/j.jiec.2017.01.019
State	Published - 25 May 2017
Externally published	Yes

Keywords

Adsorption
Cd(II)
Ni(II)
Polyethylenimine
Silica

ASJC Scopus subject areas

General Chemical Engineering

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10.1016/j.jiec.2017.01.019

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@article{82896f679945490c8de5f57c165bb32f,

title = "Polyethylenimine-modified mesoporous silica adsorbent for simultaneous removal of Cd(II) and Ni(II) from aqueous solution",

abstract = "Nano-spherical amine-rich polyethylenimine (PEI) grafted on mesoporous silica (MCM-41) (PEI/MCM-41) was developed for Cd(II) and Ni(II) removal from water. Characterization of PEI/MCM-41 using various techniques confirms its successful fabrication. Adsorption results reveal that pH and adsorbent dosage must be controlled for maximum removal. The adsorption rate was pseudo-second-order, and fitted well with Langmuir and Freundlich isotherms at equilibrium. The adsorption was thermodynamically spontaneous, endothermic and favourable. Adsorption capacities of 156.0 mg g−1 Cd(II) and 139.7 mg g−1 Ni(II) were on par with other high performing reported adsorbents. The PEI/MCM-41 was successfully reused demonstrating its potential for heavy metal decontamination application.",

keywords = "Adsorption, Cd(II), Ni(II), Polyethylenimine, Silica",

author = "Thakur, {Amit K.} and Nisola, {Grace M.} and Limjuco, {Lawrence A.} and Parohinog, {Khino J.} and Torrejos, {Rey Eliseo C.} and Shahi, {Vinod K.} and Chung, {Wook Jin}",

note = "Publisher Copyright: {\textcopyright} 2017 The Korean Society of Industrial and Engineering Chemistry",

year = "2017",

month = may,

day = "25",

doi = "10.1016/j.jiec.2017.01.019",

language = "English",

volume = "49",

pages = "133--144",

journal = "Journal of Industrial and Engineering Chemistry",

issn = "1226-086X",

publisher = "Korean Society of Industrial Engineering Chemistry",

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TY - JOUR

T1 - Polyethylenimine-modified mesoporous silica adsorbent for simultaneous removal of Cd(II) and Ni(II) from aqueous solution

AU - Thakur, Amit K.

AU - Nisola, Grace M.

AU - Limjuco, Lawrence A.

AU - Parohinog, Khino J.

AU - Torrejos, Rey Eliseo C.

AU - Shahi, Vinod K.

AU - Chung, Wook Jin

PY - 2017/5/25

Y1 - 2017/5/25

N2 - Nano-spherical amine-rich polyethylenimine (PEI) grafted on mesoporous silica (MCM-41) (PEI/MCM-41) was developed for Cd(II) and Ni(II) removal from water. Characterization of PEI/MCM-41 using various techniques confirms its successful fabrication. Adsorption results reveal that pH and adsorbent dosage must be controlled for maximum removal. The adsorption rate was pseudo-second-order, and fitted well with Langmuir and Freundlich isotherms at equilibrium. The adsorption was thermodynamically spontaneous, endothermic and favourable. Adsorption capacities of 156.0 mg g−1 Cd(II) and 139.7 mg g−1 Ni(II) were on par with other high performing reported adsorbents. The PEI/MCM-41 was successfully reused demonstrating its potential for heavy metal decontamination application.

AB - Nano-spherical amine-rich polyethylenimine (PEI) grafted on mesoporous silica (MCM-41) (PEI/MCM-41) was developed for Cd(II) and Ni(II) removal from water. Characterization of PEI/MCM-41 using various techniques confirms its successful fabrication. Adsorption results reveal that pH and adsorbent dosage must be controlled for maximum removal. The adsorption rate was pseudo-second-order, and fitted well with Langmuir and Freundlich isotherms at equilibrium. The adsorption was thermodynamically spontaneous, endothermic and favourable. Adsorption capacities of 156.0 mg g−1 Cd(II) and 139.7 mg g−1 Ni(II) were on par with other high performing reported adsorbents. The PEI/MCM-41 was successfully reused demonstrating its potential for heavy metal decontamination application.

KW - Adsorption

KW - Cd(II)

KW - Ni(II)

KW - Polyethylenimine

KW - Silica

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U2 - 10.1016/j.jiec.2017.01.019

DO - 10.1016/j.jiec.2017.01.019

M3 - Article

AN - SCOPUS:85011333478

SN - 1226-086X

VL - 49

SP - 133

EP - 144

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

Polyethylenimine-modified mesoporous silica adsorbent for simultaneous removal of Cd(II) and Ni(II) from aqueous solution

Abstract

Keywords

ASJC Scopus subject areas

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