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Physico-chemical and electrostatic surface characterisation of mica mineral and its applicability on the adsorption of Safranin Orange and Reactive Black 5 dyes.
Ribeiro, Anna Carla; Barbosa de Andrade, Murilo; Quesada, Heloise Beatriz; Bergamasco Beltran, Laiza; Bergamasco, Rosângela; Calado Santos Sobral da Fonseca, Maria Madalena; da Costa Neves Fernandes de Almeida Duarte, Elizabeth.
Afiliación
  • Ribeiro AC; LEAF - Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa - Instituto Superior de Agronomia, Lisbon, Portugal.
  • Barbosa de Andrade M; Department of Chemical Engineering, Universidade Estadual de Maringá, Maringá/Paraná, Brazil.
  • Quesada HB; Department of Chemical Engineering, Universidade Estadual de Maringá, Maringá/Paraná, Brazil.
  • Bergamasco Beltran L; Graduate Program in Food Sciences, Universidade Estadual de Maringá, Maringá/Paraná, Brazil.
  • Bergamasco R; Department of Chemical Engineering, Universidade Estadual de Maringá, Maringá/Paraná, Brazil.
  • Calado Santos Sobral da Fonseca MM; CEF - Forest Research Centre, Universidade de Lisboa - Instituto Superior de Agronomia, Lisbon, Portugal.
  • da Costa Neves Fernandes de Almeida Duarte E; LEAF - Linking Landscape, Environment, Agriculture and Food, Universidade de Lisboa - Instituto Superior de Agronomia, Lisbon, Portugal.
Environ Technol ; 43(24): 3765-3778, 2022 Oct.
Article en En | MEDLINE | ID: mdl-34034630
ABSTRACTThe combined approach of specific surface area (SSA), porosity, microprobe analysis (EMPA), transmission electron microscopy (TEM), scanning electron microscopy (SEM) equipped with EDX and infrared spectroscopy (FTIR) provided the mica mineral physico-chemical and morphological characterisation. The electrostatic surface properties were assessed through the determination of the Point of Zero Charge (pHPZC) by the drift method and the electrokinetic mica mineral features represented by the Isoelectric Point (pHIEP) which was carried out through zeta potential measurements. Adsorption tests were performed to correlate the surface charge behaviour of the mica mineral and its influence on the adsorption efficiency of two different dyes, namely: Safranin Orange (SO), as a cationic dye and Reactive Black 5 (RB5), as an anionic dye. The higher adsorption capacity SO dye was observed at pH 9 and achieved almost 83% of removal, while RB5 dye adsorption on mica surface had the highest result, about 45% of removal efficiency, on pH of 3. In both cases, the main mechanism identified that drove this results is the electrostatic force of attraction between the adsorbent edge surface charge (pH-dependent) and the ionic nature (anionic or cationic) of the pollutant dyes particles. The preliminary adsorption experiments demonstrated that the raw grounded mica mineral has a greater potential associated with its application on cationic dye removal in wastewater. The present study aimed to detail the main characteristics of the mica mineral in order to evaluate the potential use of such mineral residues in the removal efficiency of contaminated wastewater.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Citrus sinensis Tipo de estudio: Prognostic_studies Idioma: En Revista: Environ Technol Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: Portugal 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 / Citrus sinensis Tipo de estudio: Prognostic_studies Idioma: En Revista: Environ Technol Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: Portugal Pais de publicación: Reino Unido