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Performance and mechanism of polypeptidylated hemoglobin (Hb)/iron oxide magnetic composites for enhanced dye removal.
Essandoh, Matthew; Garcia, Rafael A; Gayle, Makahra R; Nieman, Christine M.
Afiliación
  • Essandoh M; United States Department of Agriculture Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA, 19038, USA. Electronic address: flaminggo20@gmail.com.
  • Garcia RA; United States Department of Agriculture Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA, 19038, USA.
  • Gayle MR; United States Department of Agriculture Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA, 19038, USA.
  • Nieman CM; United States Department of Agriculture Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA, 19038, USA.
Chemosphere ; 247: 125897, 2020 May.
Article en En | MEDLINE | ID: mdl-31972489
Composites of polypeptidylated hemoglobin supported on different iron oxide weights (0.5:1 and 1:1) were developed and demonstrated to function as efficient adsorbents for Eriochrome black-T dye removal. The synthesis of these adsorbents were performed through N-carboxyanhydride (NCA) polymerization at low temperature (4 °C) and near-neutral pH for 24 h followed by chemical co-precipitation. The synthesized adsorbents were found to exhibit BET surface area (54-87 m2/g), pore volume (0.30-0.35 cm3/g), average pore diameter (160-218 Å) and average pore width (136-171 Å). The developed adsorbents were tested in a batch dye adsorption system. Adsorption was found to follow pseudo-second order kinetics and the Langmuir adsorption capacities were 123, 204 and 217 mg/g for Fe3O4, 0.5:1 and 1:1 adsorbent samples, respectively. Chemical regeneration was successfully carried out using methanol and the reusability of the adsorbents were demonstrated with a decrease in adsorption capacities from ∼49 to ∼33 mg/g after the fourth reuse.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Hemoglobinas / Compuestos Férricos / Purificación del Agua / Colorantes Idioma: En Revista: Chemosphere Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Hemoglobinas / Compuestos Férricos / Purificación del Agua / Colorantes Idioma: En Revista: Chemosphere Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido