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Dye removal from textile industrial effluents by adsorption on exfoliated graphite nanoplatelets: kinetic and equilibrium studies.
Carvallho, Marilda N; da Silva, Karolyne S; Sales, Deivson C S; Freire, Eleonora M P L; Sobrinho, Maurício A M; Ghislandi, Marcos G.
Afiliação
  • Carvallho MN; Departamento de Engenharia Química, Universidade Federal de Pernambuco (UFPE), Recife 50740-521, PE, Brazil.
  • da Silva KS; Departamento de Engenharia Química, Universidade Federal de Pernambuco (UFPE), Recife 50740-521, PE, Brazil.
  • Sales DC; Departamento de Engenharia Química, Universidade Federal de Pernambuco (UFPE), Recife 50740-521, PE, Brazil.
  • Freire EM; Departamento de Engenharia Química, Universidade Federal de Pernambuco (UFPE), Recife 50740-521, PE, Brazil.
  • Sobrinho MA; Departamento de Engenharia Química, Universidade Federal de Pernambuco (UFPE), Recife 50740-521, PE, Brazil.
  • Ghislandi MG; Center for Strategic Technologies of the Northeast (CETENE), Av. Prof. Luiz Freire 1, Recife 50740-540, PE, Brazil and Unidade Acadêmica do Cabo de Santo Agostinho (UACSA), Universidade Federal Rural de Pernambuco, BR 101 Sul, Km 97-S/N, Cabo de Santo Agostinho, PE, Brazil E-mail: ghislandi@gmail.co
Water Sci Technol ; 73(9): 2189-98, 2016.
Article em En | MEDLINE | ID: mdl-27148721
The concept of physical adsorption was applied for the removal of direct and reactive blue textile dyes from industrial effluents. Commercial graphite nanoplatelets were used as substrate, and the quality of the material was characterized by atomic force and transmission electron microscopies. Dye/graphite nanoplatelets water solutions were prepared varying their pH and initial dye concentration. Exceptionally high values (beyond 100 mg/L) for adsorptive capacity of graphite nanoplatelets could be achieved without complicated chemical modifications, and equilibrium and kinetic experiments were performed. Our findings were compared with the state of the art, and compared with theoretical models. Agreement between them was satisfactory, and allowed us to propose novel considerations describing the interactions of the dyes and the graphene planar structure. The work highlights the important role of these interactions, which can govern the mobility of the dye molecules and the amount of layers that can be stacked on the graphite nanoplatelets surface.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Indústria Têxtil / Nanoestruturas / Corantes / Grafite / Resíduos Industriais Tipo de estudo: Prognostic_studies Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Indústria Têxtil / Nanoestruturas / Corantes / Grafite / Resíduos Industriais Tipo de estudo: Prognostic_studies Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido