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Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions

Abdel-Ghani, Nour T. ; El-Chaghaby, Ghadir A. ; Rawash, El-Shaimaa A. ; Lima, Eder C.

Journal of advanced research, 2019-05, Vol.17, p.55-63 [Periódico revisado por pares]

Egypt: Elsevier B.V

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  • Título:
    Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions
  • Autor: Abdel-Ghani, Nour T. ; El-Chaghaby, Ghadir A. ; Rawash, El-Shaimaa A. ; Lima, Eder C.
  • Assuntos: Adsorption ; Central composite design ; Coomassie brilliant blue ; Nanocomposite ; Nigella sativa L. waste ; Original
  • É parte de: Journal of advanced research, 2019-05, Vol.17, p.55-63
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: [Display omitted] •The successful preparation of novel magnetized activated carbon using Nigella sativa waste was achieved.•The removal of Coomassie brilliant blue dye from aqueous solution by the prepared adsorbent was performed.•Four factors affecting the adsorption process of Coomassie dye by the magnetized carbon were studied.•The adsorption process was optimized using a factorial design of experiments with central points.•The desirability was assessed for the two different studied responses, removal percentage and adsorption capacity. The present work was carried out to evaluate the removal of Coomassie brilliant blue dye by adsorption onto a magnetized activated carbon nanocomposite (MNSA) prepared from Nigella sativa L. (NS) waste. Different techniques, including infrared spectroscopy, scanning electron microscopy, and nitrogen adsorption/desorption, were used to characterize MNSA to investigate its adsorption properties. Adsorption experiments were carried out by simultaneously optimizing four variables that usually present a strong effect in adsorption studies. A full 24 factorial design with 3 central points was used. The four independent variables were the initial pH of the dye solution (pH), the initial dye concentration (Co), the adsorbent mass (m), and the contact time (t). The sorption capacity (q) of the adsorbent and the percentage of dye removal (% Rem) from an aqueous solution were used as the responses of the factorial design. The results indicated that pH, Co, and m were essential factors for the overall optimization of both responses (q and % Rem) and that several interactions of two, three and four factors occurred. Based on the design of the experiments (DOE), the optimized conditions for adsorption were pH = 2.00, Co = 40.0 mg L−1, m = 30.0 mg, and t = 3.0 h. Under these conditions, both responses, q and % Rem, were maximized, with a desirability of 85.54%. The findings of this study could be useful for industrial wastewater treatment systems.
  • Editor: Egypt: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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