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Estimation on Fixed-Bed Column Parameters of Breakthrough Behaviors for Gold Recovery by Adsorption onto Modified/Functionalized Amberlite XAD7

Author

Listed:
  • Adina Negrea

    (Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Bd. V. Parvan No. 6, 300223 Timisoara, Romania)

  • Maria Mihailescu

    (Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Bd. V. Parvan No. 6, 300223 Timisoara, Romania
    Research Institute for Renewable Energy of the Politehnica University Timisoara, 138 Musicescu Street, 300774 Timisoara, Romania)

  • Giannin Mosoarca

    (Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Bd. V. Parvan No. 6, 300223 Timisoara, Romania)

  • Mihaela Ciopec

    (Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Bd. V. Parvan No. 6, 300223 Timisoara, Romania)

  • Narcis Duteanu

    (Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Bd. V. Parvan No. 6, 300223 Timisoara, Romania)

  • Petru Negrea

    (Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Bd. V. Parvan No. 6, 300223 Timisoara, Romania)

  • Vasile Minzatu

    (Research Institute for Renewable Energy of the Politehnica University Timisoara, 138 Musicescu Street, 300774 Timisoara, Romania)

Abstract

The objective of this paper was to evaluate the potential of a new adsorbent material to recover Au (III) from real wastewater, in a column with a fixed bed in a dynamic regime. The material was obtained through functionalization, by impregnation of the commercial resin, Amberlite XAD 7 type, with L-glutamic acid, which has active groups –NH 2 and –COOH. The goal of the experiments was to follow the correlation of fixed-bed column specific adsorption parameters (the effluent volume, the amounts of adsorbent, heights of the adsorbent layer in column) with the time necessary to cross the column. The experimental data obtained were modeled, using the Bohart–Adams, Yoon–Nelson Thomas and Clark models, to establish the mechanism of the Au (III) recovery process, in a dynamic regime. Also, we established the number of cycles for adsorption–desorption for which the new material can be used. We used 5% HNO 3 (5%) as desorption agent in five adsorption–desorption cycles, until the process was no longer efficient. The degree of desorption varied between 84% and 34% from cycle 1 to cycle 5.

Suggested Citation

  • Adina Negrea & Maria Mihailescu & Giannin Mosoarca & Mihaela Ciopec & Narcis Duteanu & Petru Negrea & Vasile Minzatu, 2020. "Estimation on Fixed-Bed Column Parameters of Breakthrough Behaviors for Gold Recovery by Adsorption onto Modified/Functionalized Amberlite XAD7," IJERPH, MDPI, vol. 17(18), pages 1-14, September.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:18:p:6868-:d:416326
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    References listed on IDEAS

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    1. Lee, Jae-chun & Song, Hyo Teak & Yoo, Jae-Min, 2007. "Present status of the recycling of waste electrical and electronic equipment in Korea," Resources, Conservation & Recycling, Elsevier, vol. 50(4), pages 380-397.
    2. Shila Jafari & Benjamin P. Wilson & Minna Hakalahti & Tekla Tammelin & Eero Kontturi & Mari Lundström & Mika Sillanpää, 2019. "Recovery of Gold from Chloride Solution by TEMPO-Oxidized Cellulose Nanofiber Adsorbent," Sustainability, MDPI, vol. 11(5), pages 1-16, March.
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    1. Enrico Catizzone & Corradino Sposato & Assunta Romanelli & Donatella Barisano & Giacinto Cornacchia & Luigi Marsico & Daniela Cozza & Massimo Migliori, 2021. "Purification of Wastewater from Biomass-Derived Syngas Scrubber Using Biochar and Activated Carbons," IJERPH, MDPI, vol. 18(8), pages 1-20, April.

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