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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

Terbouche, Achour ; Ramdane-Terbouche, Chafia Ait ; Hauchard, Didier ; Djebbar, Safia

Journal of Environmental Sciences, 2011, Vol.23(7), pp.1095-1103 [Tạp chí có phản biện]

ISSN: 1001-0742 ; E-ISSN: 1878-7320 ; DOI: 10.1016/S1001-0742(10)60521-9

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  • Nhan đề:
    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
  • Tác giả: Terbouche, Achour ; Ramdane-Terbouche, Chafia Ait ; Hauchard, Didier ; Djebbar, Safia
  • Chủ đề: Adsorption Capacity ; Forest and Sahara Humic Acids ; Polyaniline ; Heavy Metal ; Modified Cavity Microelectrode ; Engineering ; Environmental Sciences
  • Là 1 phần của: Journal of Environmental Sciences, 2011, Vol.23(7), pp.1095-1103
  • Mô tả: 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 Cd , Zn and Ni 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 Cd , Zn and Ni 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 ( ) 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 of Cd , Zn and Ni 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.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1001-0742 ; E-ISSN: 1878-7320 ; DOI: 10.1016/S1001-0742(10)60521-9

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