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http://hdl.handle.net/20.500.12358/24084
TitleRemoval of Nitrite Ions from Aqueous Solutions by Ethylenediamine Polysiloxane Immobilized Ligand System
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Abstract

The functionalized porous solid ethylenediamine polysiloxane immobilized ligand system P-NN (where P represents [Si-O]n polysiloxane network and NN represents ethylenediamnie  group) was prepared by hydrolytic polycondensation of 3-aminopropyl-2-aminoethyltrimethoxysilane with tetraethylorthosilcate (TEOS) in the presence of CTAB surfactant. CTAB was used to enhance the porosity of the material and therefore increases the adsorption capacity of the immobilized ligand system. The functionalized ligand system was investigated as adsorbent for nitrite ions from aqueous solutions. Both batch and column methods were carried out and the effect of various parameters was studied that include contact time, pH, nitrite concentration and temperature in order to investigate the optimum conditions for the nitrite ions removal.  The optimum nitrite adsorption was established in acidic medium, at 75oC, and at contact time equals 24 h. The nitrite removal was about 65-100% at 5-50 ppm of initial nitrite concentration. The use of this adsorbent is proved to be repeatable and recyclable. The adsorbent can be considered as a promising material for nitrite removal from different water and waste water and aqueous extracts containing nitrite ions.

Authors
Abu Shaweesh, Asmah A.
Alkahlout, Suha T.
El-Ashgar, Nizam M.
TypeJournal Article
Date2017
LanguageEnglish
Subjects
nitrite removal
silica based solid supports
immobilized polysiloxanes
sol-gel
template synthesis
Published inIUG Journal of Natural Studies: (Special Issue) The Sixth International Conference on Science & Development � 14-15 march 2017
SeriesVolume: 25, Number: 2
Publisherالجامعة الإسلامية - غزة
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  • Staff Publications- Faculty of Science [910]
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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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