Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation

Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation

The goal of this paper is to examine, by quantitative XRD analysis, the effect of heavy metal cation concentrations (Pb2+, Cu2+) on the selectivity phenomenon in the case of dioctahedral smectite (i.e., Na-montmorillonite). The quantitative XRD analysis is achieved using an indirect method based on...

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Main Authors: W. Oueslati, M. Meftah, H. Ben Rhaiem, A. Ben Haj Amara
Format: Article
Language:English
Published: Hindawi Limited 2009-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2009/385673
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spelling doaj-889afc86db414786b95fb2c6a0677aad2020-11-24T20:56:56ZengHindawi LimitedAdvances in Materials Science and Engineering1687-84341687-84422009-01-01200910.1155/2009/385673385673Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD InvestigationW. Oueslati0M. Meftah1H. Ben Rhaiem2A. Ben Haj Amara3Laboratoire de Physique des Matériaux Lamellaires et Nanomatériaux Hybrides (PMLNMH), Faculté des Sciences de Bizerte, 7021 Zarzouna, TunisiaLaboratoire de Physique des Matériaux Lamellaires et Nanomatériaux Hybrides (PMLNMH), Faculté des Sciences de Bizerte, 7021 Zarzouna, TunisiaLaboratoire de Physique des Matériaux Lamellaires et Nanomatériaux Hybrides (PMLNMH), Faculté des Sciences de Bizerte, 7021 Zarzouna, TunisiaLaboratoire de Physique des Matériaux Lamellaires et Nanomatériaux Hybrides (PMLNMH), Faculté des Sciences de Bizerte, 7021 Zarzouna, TunisiaThe goal of this paper is to examine, by quantitative XRD analysis, the effect of heavy metal cation concentrations (Pb2+, Cu2+) on the selectivity phenomenon in the case of dioctahedral smectite (i.e., Na-montmorillonite). The quantitative XRD analysis is achieved using an indirect method based on the comparison of experimental XRD profiles to those calculated using structural models. The obtained results show that for strong metals concentrations (i.e., 10−1N), the host material presents heterogeneous structure characterized by interstratified hydration states between 1 W and 2 W (i.e., respectively, one and two water layer hydration state) attributed to Pb2+ cation. For low concentration, the d001 values investigation indicates that montmorillonite remains saturated with Na+ characterized by homogeneous 1 W hydration state.http://dx.doi.org/10.1155/2009/385673
collection DOAJ
language English
format Article
sources DOAJ
author W. Oueslati
M. Meftah
H. Ben Rhaiem
A. Ben Haj Amara
spellingShingle W. Oueslati
M. Meftah
H. Ben Rhaiem
A. Ben Haj Amara
Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation
Advances in Materials Science and Engineering
author_facet W. Oueslati
M. Meftah
H. Ben Rhaiem
A. Ben Haj Amara
author_sort W. Oueslati
title Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation
title_short Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation
title_full Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation
title_fullStr Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation
title_full_unstemmed Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation
title_sort selectivity of na-montmorillonite versus concentration of two competitive bivalent cations (cu2+, pb2+): quantitative xrd investigation
publisher Hindawi Limited
series Advances in Materials Science and Engineering
issn 1687-8434
1687-8442
publishDate 2009-01-01
description The goal of this paper is to examine, by quantitative XRD analysis, the effect of heavy metal cation concentrations (Pb2+, Cu2+) on the selectivity phenomenon in the case of dioctahedral smectite (i.e., Na-montmorillonite). The quantitative XRD analysis is achieved using an indirect method based on the comparison of experimental XRD profiles to those calculated using structural models. The obtained results show that for strong metals concentrations (i.e., 10−1N), the host material presents heterogeneous structure characterized by interstratified hydration states between 1 W and 2 W (i.e., respectively, one and two water layer hydration state) attributed to Pb2+ cation. For low concentration, the d001 values investigation indicates that montmorillonite remains saturated with Na+ characterized by homogeneous 1 W hydration state.
url http://dx.doi.org/10.1155/2009/385673
work_keys_str_mv AT woueslati selectivityofnamontmorilloniteversusconcentrationoftwocompetitivebivalentcationscu2pb2quantitativexrdinvestigation
AT mmeftah selectivityofnamontmorilloniteversusconcentrationoftwocompetitivebivalentcationscu2pb2quantitativexrdinvestigation
AT hbenrhaiem selectivityofnamontmorilloniteversusconcentrationoftwocompetitivebivalentcationscu2pb2quantitativexrdinvestigation
AT abenhajamara selectivityofnamontmorilloniteversusconcentrationoftwocompetitivebivalentcationscu2pb2quantitativexrdinvestigation
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