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Journal of Dispersion Science and Technology Volume 38, 2017 - Issue 4
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Original Articles

Comparative adsorption of nitrate ions on the polypyrrole and polyaniline from aqueous solution

M. Ait HakiLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, Morocco
,
M. LaabdLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, Morocco
,
H. ChafaiLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, Morocco
,
H. KabliLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, Morocco
,
M. Ez-zaheryLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, Morocco
,
M. BazzaouiLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, Morocco
,
R. LakhmiriLaboratory of Chemical Engineering and Valorization of Resources, Faculty of Science and Technology, Abdelmalek Essaadi University, B.P. Tangier, Morocco
&
A. AlbourineLaboratory of Materials and Environment, Faculty of Science, Ibn Zohr University, B.P. Agadir, MoroccoCorrespondence[email protected]
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Pages 598-603 | Received 27 Mar 2016, Accepted 26 Apr 2016, Published online: 11 May 2016
 
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ABSTRACT

The objective of this study was to compare the adsorption of nitrate ions using two conducting polymers—polypyrrole (PPy) and polyaniline (PANi)—as adsorbents. The effects of different adsorption parameters including contact time, pH, temperature, initial concentration, adsorbent dosage, and presence of orthophosphate ions were investigated in batch experiments. Kinetic studies indicated that the adsorption process follow pseudo-second-order kinetic model. The Langmuir model fitted the experimental data much better than the Freundlich and Temkin models. The PANi showed higher adsorption capacity to nitrate ions than that of PPy. The adsorption of ions onto the PANi and PPy was spontaneous and exothermic.

GRAPHICAL ABSTRACT

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