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The potential of thermally treated organobentonites to adsorb organic compounds from water
Year:
2012
Source of publication :
Applied Clay Science
Authors :
Borisover, Mikhail
;
.
Bukhanovsky, Nadezhda
;
.
Volume :
67-68
Co-Authors:
Borisover, M., Institute of Soil, Water and Environmental Sciences, The Volcani Center, POB 6, Bet Dagan 50250, Israel
Bukhanovsky, N., Institute of Soil, Water and Environmental Sciences, The Volcani Center, POB 6, Bet Dagan 50250, Israel
Lapides, I., Institute of Chemistry, The Hebrew University of Jerusalem, Edmund Y. Safra Campus, Jerusalem 91904, Israel
Yariv, S., Institute of Chemistry, The Hebrew University of Jerusalem, Edmund Y. Safra Campus, Jerusalem 91904, Israel
Facilitators :
From page:
151
To page:
157
(
Total pages:
7
)
Abstract:
The effects of thermal treatment of selected quaternary ammonium-exchanged bentonites formed with n-hexadecyltrimethylammonium, benzyltrimethylammonium and tetraethylammonium on their adsorption of a series of organic compounds from water were examined. The examined compounds were phenanthrene, atrazine, phenol, and m-nitrophenol, which differ substantially in their molecular structures and are capable of various types of interactions with adsorbents and solvent. The thermal pretreatment of organobentonites and of original bentonite involved 2. h of heating in air at 150, 250, 360 and 420 °C. Heating of organoclays at 150 °C did not cause obvious changes in the structures of the adsorbents but might have enhanced their interactions with organic adsorbates. The extent of the enhancement differed among the adsorbates and could reflect their differing abilities to compete with water molecules for adsorption sites on organoclays. The loss of organic carbon and significant changes in the organoclay chemical structures caused by preheating in air at higher temperatures did not result in significant loss of the organoclay potential to adsorb organic compounds present in the aqueous solution. © 2011 Elsevier B.V.
Note:
Related Files :
Adsorption
heating
molecular analysis
phenols
temperature effect
Tetraethylammonium
Thermal pre-treatment
Show More
Related Content
More details
DOI :
10.1016/j.clay.2011.11.005
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19522
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:29
Scientific Publication
The potential of thermally treated organobentonites to adsorb organic compounds from water
67-68
Borisover, M., Institute of Soil, Water and Environmental Sciences, The Volcani Center, POB 6, Bet Dagan 50250, Israel
Bukhanovsky, N., Institute of Soil, Water and Environmental Sciences, The Volcani Center, POB 6, Bet Dagan 50250, Israel
Lapides, I., Institute of Chemistry, The Hebrew University of Jerusalem, Edmund Y. Safra Campus, Jerusalem 91904, Israel
Yariv, S., Institute of Chemistry, The Hebrew University of Jerusalem, Edmund Y. Safra Campus, Jerusalem 91904, Israel
The potential of thermally treated organobentonites to adsorb organic compounds from water
The effects of thermal treatment of selected quaternary ammonium-exchanged bentonites formed with n-hexadecyltrimethylammonium, benzyltrimethylammonium and tetraethylammonium on their adsorption of a series of organic compounds from water were examined. The examined compounds were phenanthrene, atrazine, phenol, and m-nitrophenol, which differ substantially in their molecular structures and are capable of various types of interactions with adsorbents and solvent. The thermal pretreatment of organobentonites and of original bentonite involved 2. h of heating in air at 150, 250, 360 and 420 °C. Heating of organoclays at 150 °C did not cause obvious changes in the structures of the adsorbents but might have enhanced their interactions with organic adsorbates. The extent of the enhancement differed among the adsorbates and could reflect their differing abilities to compete with water molecules for adsorption sites on organoclays. The loss of organic carbon and significant changes in the organoclay chemical structures caused by preheating in air at higher temperatures did not result in significant loss of the organoclay potential to adsorb organic compounds present in the aqueous solution. © 2011 Elsevier B.V.
Scientific Publication
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