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| Evaluation of adsorption capacities of humic acids extracted from Algerian soil on polyaniline for application to remove pollutants such as Cd(Ⅱ), Zn(Ⅱ) and Ni(Ⅱ) and characterization with cavity microelectrode | |
| 作者姓名： | Achour Terbouche Chafia Ait Ramdane-Terbouche Didier Hauchar Safia Djebbar |
| 作者单位： | 1. Center of Scientific Research and Technical in Physical and Chemical Analysis, Algiers 16004, Algeria. E-mail: achour_t@yahoo.fr ;Laboratory of Hydrometallursy and Molecular Inorganic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene, Algiers 16111, Algeria;Sciences Chimiques de Rennes, UMR CNRS 6226, Ecole Nationale Supérieure de Chirnie de Rennes, avenue du gérnéral Leclerc, CS 50837, 35708 Renncs Cedex 7, France 2. Laboratory of Hydrometallursy and Molecular Inorganic Chemistry, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene, Algiers 16111, Algeria 3. Sciences Chimiques de Rennes, UMR CNRS 6226, Ecole Nationale Supérieure de Chirnie de Rennes, avenue du gérnéral Leclerc, CS 50837, 35708 Renncs Cedex 7, France ;Université Européenne de Bretagne, 12 Avenue Janvier, 35000 Rennes, France |
| 基金项目： | and Cd2+ on HA-PEB solid compounds is in the order:THA-PEB ＞ YHA-PEB ＞ PFHA-PEB.For all studied systems;the adsorbed amounts of metal were found to decrease in the order:Ni2+ ＞ Zn2+ ＞ Cd2+.The electrochemical studies show that the cavity microelectrode modified by HA-PEB and M-HAPEB gives good current response in acidic solution |
| 摘 要： | |
| 关 键 词： | 吸附能力 重金属镉 阿尔及利亚 内电极 聚苯胺 腐殖酸 污染物 土壤 |
| 收稿时间： | 2010/8/19 0:00:00 |
| 修稿时间： | 2011/2/18 0:00:00 |
Evaluation of adsorption capacities of humic acids extracted from Algerian soil on polyaniline for application to remove pollutants such as Cd(II), Zn(II) and Ni(II) and characterization with cavity microelectrode |
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| Achour Terbouche,Chafia Ait Ramdane-Terbouche,Didier Hauchar,Safia Djebbar.Evaluation of adsorption capacities of humic acids extracted from Algerian soil on polyaniline for application to remove pollutants such as Cd(II), Zn(II) and Ni(II) and characterization with cavity microelectrode[J].Journal of Environmental Sciences,2011,23(7):1095-1103. | |
| Authors: | Achour Terbouche Chafia Ait Ramdane-Terbouche Didier Hauchard and Safia Djebbar |
| Institution: | Center of Scientific Research and Technical in Physical and Chemical Analysis, Algiers 16004, Algeria. achour_t@yahoo.fr |
| Abstract: | The adsorption capacities of new humic acids isolated from Yakouren forest (YHA) and Sahara (Tamenrasset: THA) soils (Algeria) and commercial humic acid (PFHA) on polyaniline emeraldine base (PEB) were studied at pH 6.6. Also the adsorption of heavy metals such as Cd2+, Zn2+ and Ni2+ on humic acid-polyaniline systems (HA-PEB) was investigated at the same conditions. HA-PEB compounds were characterized by scanning electron microscopy (SEM), infrared spectrometry and cavity microelectrode. In addition, batch adsorption and cavity microelectrode were used in the adsorption study of Cd2+, Zn2+ and Ni2+ on HA-PEB. To develop biocaptors of polluting metals using a cavity microelectrode modified by HA-PEB systems, the adsorption kinetic and adsorption capacity were investigated. The SEM analysis showed that the presence of humic acid affected the PEB surface and caused the formation of a granular morphology. The maximum adsorption capacities (qmax) of PFHA, THA and YHA determined by adsorption isotherms were 91.31, 132.1 and 151.0 mg/g, respectively. Batch adsorption results showed that qmax of Cd2+, Zn2+ and Ni2+ on HA-PEB followed the order: THA-PEB > YHA-PEB > PFHA-PEB. The voltammograms obtained with HA-PEB modified cavity microelectrode showed the appearance of new redox couples reflecting the adsorption of HA on PEB. Metal-humic acid-polyaniline voltammograms were characterized by appearance of oxidation-reduction couples or reduction wave corresponding to metal. Finally, the result may be exploited to develop a biocaptor based on the cavity microelectrode amended by THA-PEB and YHA-PEB. |
| Keywords: | adsorption capacity forest and Sahara humic acids polyaniline heavy metal modified cavity microelectrode |
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