Organosilicas and organo-clay minerals as sorbents for toluene

Moaaz K. Seliem; Sridhar Komarneni; Yunchul Cho; Taesook Lim; M. G. Shahien; A. A. Khalil; I. M. Abd El-Gaid

doi:10.1016/j.clay.2011.02.024

Organosilicas and organo-clay minerals as sorbents for toluene

Moaaz K. Seliem, Sridhar Komarneni, Yunchul Cho, Taesook Lim, M. G. Shahien, A. A. Khalil, I. M. Abd El-Gaid

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

21 Scopus citations

Abstract

This study investigated the adsorption of toluene as a non-ionic organic contaminant by organosilicas and organo-clay minerals. Different organic surfactants were used to prepare a variety of MCM-41 molecular sieves at room temperature while cetyltrimethylammonium (CTMA) bromide was used to synthesize MCM-48 mesoporous material under hydrothermal conditions. Organo-clay minerals were synthesized under hydrothermal conditions using synthetic low-charge Na-fluorophlogopite micas with CTMA bromide as organic surfactant. All synthetic organosilicas and organo-clay minerals, the latter including those procured from two commercial sources were characterized by powder X-ray diffraction (XRD) and their toluene sorption properties were investigated. Among organosilicas, MCM-48 exhibited the highest distribution coefficient (K_d) value of toluene (95±9L/kg). An organo-clay mineral, Nanomer® PGW montmorillonite modified with CTMA bromide (Nanomer® 1.28E) showed the maximum K_d value (345±22L/kg) for toluene among all the studied organosilicas and organo-clay minerals. The organo-clay mineral nanocomposites were found to be superior to MCM-41 and MCM-48 organosilicas tested here and the former could find applications in remediating organic contaminants such as toluene from soil and groundwater.

Original language	English (US)
Pages (from-to)	184-189
Number of pages	6
Journal	Applied Clay Science
Volume	52
Issue number	1-2
DOIs	https://doi.org/10.1016/j.clay.2011.02.024
State	Published - Apr 2011

All Science Journal Classification (ASJC) codes

Geology
Geochemistry and Petrology

Access to Document

10.1016/j.clay.2011.02.024

Cite this

@article{fe2771c88164400fbfcfd7fbea08927f,

title = "Organosilicas and organo-clay minerals as sorbents for toluene",

abstract = "This study investigated the adsorption of toluene as a non-ionic organic contaminant by organosilicas and organo-clay minerals. Different organic surfactants were used to prepare a variety of MCM-41 molecular sieves at room temperature while cetyltrimethylammonium (CTMA) bromide was used to synthesize MCM-48 mesoporous material under hydrothermal conditions. Organo-clay minerals were synthesized under hydrothermal conditions using synthetic low-charge Na-fluorophlogopite micas with CTMA bromide as organic surfactant. All synthetic organosilicas and organo-clay minerals, the latter including those procured from two commercial sources were characterized by powder X-ray diffraction (XRD) and their toluene sorption properties were investigated. Among organosilicas, MCM-48 exhibited the highest distribution coefficient (Kd) value of toluene (95±9L/kg). An organo-clay mineral, Nanomer{\textregistered} PGW montmorillonite modified with CTMA bromide (Nanomer{\textregistered} 1.28E) showed the maximum Kd value (345±22L/kg) for toluene among all the studied organosilicas and organo-clay minerals. The organo-clay mineral nanocomposites were found to be superior to MCM-41 and MCM-48 organosilicas tested here and the former could find applications in remediating organic contaminants such as toluene from soil and groundwater.",

author = "Seliem, {Moaaz K.} and Sridhar Komarneni and Yunchul Cho and Taesook Lim and Shahien, {M. G.} and Khalil, {A. A.} and {Abd El-Gaid}, {I. M.}",

note = "Funding Information: The senior author thanks the Egyptian government and Scientific Research Academy for financially supporting him during this study. ",

year = "2011",

month = apr,

doi = "10.1016/j.clay.2011.02.024",

language = "English (US)",

volume = "52",

pages = "184--189",

journal = "Applied Clay Science",

issn = "0169-1317",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Organosilicas and organo-clay minerals as sorbents for toluene

AU - Seliem, Moaaz K.

AU - Komarneni, Sridhar

AU - Cho, Yunchul

AU - Lim, Taesook

AU - Shahien, M. G.

AU - Khalil, A. A.

AU - Abd El-Gaid, I. M.

N1 - Funding Information: The senior author thanks the Egyptian government and Scientific Research Academy for financially supporting him during this study.

PY - 2011/4

Y1 - 2011/4

N2 - This study investigated the adsorption of toluene as a non-ionic organic contaminant by organosilicas and organo-clay minerals. Different organic surfactants were used to prepare a variety of MCM-41 molecular sieves at room temperature while cetyltrimethylammonium (CTMA) bromide was used to synthesize MCM-48 mesoporous material under hydrothermal conditions. Organo-clay minerals were synthesized under hydrothermal conditions using synthetic low-charge Na-fluorophlogopite micas with CTMA bromide as organic surfactant. All synthetic organosilicas and organo-clay minerals, the latter including those procured from two commercial sources were characterized by powder X-ray diffraction (XRD) and their toluene sorption properties were investigated. Among organosilicas, MCM-48 exhibited the highest distribution coefficient (Kd) value of toluene (95±9L/kg). An organo-clay mineral, Nanomer® PGW montmorillonite modified with CTMA bromide (Nanomer® 1.28E) showed the maximum Kd value (345±22L/kg) for toluene among all the studied organosilicas and organo-clay minerals. The organo-clay mineral nanocomposites were found to be superior to MCM-41 and MCM-48 organosilicas tested here and the former could find applications in remediating organic contaminants such as toluene from soil and groundwater.

AB - This study investigated the adsorption of toluene as a non-ionic organic contaminant by organosilicas and organo-clay minerals. Different organic surfactants were used to prepare a variety of MCM-41 molecular sieves at room temperature while cetyltrimethylammonium (CTMA) bromide was used to synthesize MCM-48 mesoporous material under hydrothermal conditions. Organo-clay minerals were synthesized under hydrothermal conditions using synthetic low-charge Na-fluorophlogopite micas with CTMA bromide as organic surfactant. All synthetic organosilicas and organo-clay minerals, the latter including those procured from two commercial sources were characterized by powder X-ray diffraction (XRD) and their toluene sorption properties were investigated. Among organosilicas, MCM-48 exhibited the highest distribution coefficient (Kd) value of toluene (95±9L/kg). An organo-clay mineral, Nanomer® PGW montmorillonite modified with CTMA bromide (Nanomer® 1.28E) showed the maximum Kd value (345±22L/kg) for toluene among all the studied organosilicas and organo-clay minerals. The organo-clay mineral nanocomposites were found to be superior to MCM-41 and MCM-48 organosilicas tested here and the former could find applications in remediating organic contaminants such as toluene from soil and groundwater.

UR - http://www.scopus.com/inward/record.url?scp=79953086674&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79953086674&partnerID=8YFLogxK

U2 - 10.1016/j.clay.2011.02.024

DO - 10.1016/j.clay.2011.02.024

M3 - Article

AN - SCOPUS:79953086674

SN - 0169-1317

VL - 52

SP - 184

EP - 189

JO - Applied Clay Science

JF - Applied Clay Science

IS - 1-2

ER -

Organosilicas and organo-clay minerals as sorbents for toluene

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this