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

84 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{1d10ba273c1248cb8017c7971f62bfc8,

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",

}

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

UR - https://www.scopus.com/pages/publications/85011333478

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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