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Paper pulp-based adsorbents for the removal of pharmaceuticals from wastewater: A novel approach towards diversification

Oliveira, Gonçalo ; Calisto, Vânia ; Santos, Sérgio M. ; Otero, Marta ; Esteves, Valdemar I.

The Science of the total environment, 2018-08, Vol.631-632, p.1018-1028 [Periódico revisado por pares]

Netherlands: Elsevier B.V

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  • Título:
    Paper pulp-based adsorbents for the removal of pharmaceuticals from wastewater: A novel approach towards diversification
  • Autor: Oliveira, Gonçalo ; Calisto, Vânia ; Santos, Sérgio M. ; Otero, Marta ; Esteves, Valdemar I.
  • Assuntos: Activated carbons ; Adsorption ; Bleached pulp ; Emerging contaminants ; Raw pulp ; Water treatment
  • É parte de: The Science of the total environment, 2018-08, Vol.631-632, p.1018-1028
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: In this work, two pulps, bleached (BP) and raw pulp (RP), derived from the paper production process, were used as precursors of non-activated and activated carbons (ACs). In the case of non-ACs, the production involved either pyrolysis or pyrolysis followed by acid washing. For ACs production, the pulps were impregnated with K2CO3 or H3PO4, and then pyrolysed and acid washed. After production, the materials were physically and chemically characterized. Then, batch adsorption tests on the removal of two pharmaceuticals (the anti-epileptic carbamazepine (CBZ) and the antibiotic sulfamethoxazole (SMX)) from ultra-pure water and from Waste Water Treatment Plant (WWTP) effluents were performed. In ultra-pure water, non-ACs were not able to adsorb CBZ or SMX while ACs showed good adsorption capacities. In WWTP effluents, although ACs satisfactorily adsorbed CBZ and SMX, they showed lower adsorption capacities for the latter. Tests with WWTP effluents revealed that the best adsorption capacities were achieved by carbons produced from BP and activated with H3PO4: 92±19mgg−1 for CBZ and 13.0±0.6mgg−1 for SMX. These results indicate the potential of paper pulps as precursors for ACs that can be applied in wastewater treatment. [Display omitted] •Raw and bleached paper pulps were used to generate carbon adsorbents.•Carbons were characterized and used to remove 2 pharmaceuticals from water.•Activation with K2CO3 or H3PO4 provided highly porous materials (SBET up to 965m2g−1).•H3PO4-activated carbons were efficient adsorbents both in ultra-pure and wastewater.
  • Editor: Netherlands: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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