Bienvenido al Repositorio Institucional del Concytec

El Repositorio Institucional del Concytec tiene como objetivo permitir el libre acceso a la producción científica institucional, optimizando su visibilidad; así mismo garantizar la preservación y conservación de la información relacionada a la ciencia, tecnología e innovación.



Display.item.jsp


Por favor, utiliza este identificador para citar o enlazar este ítem:
http://hdl.handle.net/20.500.12390/2334


Título: Comparative study of anion removal using adsorbents prepared from a homoionic clay
Autor(es): Adauto A. 
Sun-Kou M.R. 
Resumen: The adsorption capacity of adsorbent materials (organophilic clays) prepared from a homoionic clay was compared for the removal of nitrates and nitrites present in aqueous solution in batch systems at room temperature.The organophilic clays were obtained by replacing the exchange cations present in the precursor clays with quaternary ammonium cations. For this purpose, two precursor clays were used, a natural clay (FS) and the same clay exchanged with sodium (CP) and two ammonium cations with different structure: hexadecyltrimethylammonium (HDTMA) and benzyltriethylammonium (BTEA) with amounts equivalent to 1.5, 2.5 and 4.0 cation exchange capacity (C.E.C.). Ion exchange is important to obtain a good affinity between organoclay and anionic contaminants. The clays were characterized by XRD, FTIR and SEM-EDX. The maximum adsorption capacities of the CP-HDTMA-4.0 clay for nitrate and nitrite ion were 7.23 and 0.65 mg g−1, respectively, indicating that the organophilic clay obtained from the homoionic clay with 4 C.E.C. ion exchange and the surfactant HDTMA had significant effects on the adsorption of nitrate and nitrite ions. Finally, the possible mechanisms and implications of the results for the use of these organophilic clays as adsorbent materials for the removal of the ions under study are discussed. © 2021 Elsevier B.V.
Tema: BTEA;HDTMA;Nitrate and nitrite adsorption;Organophilic clays
Editorial: Elsevier B.V.
Fecha de publicación: 2021
Publicado en: Environmental Nanotechnology, Monitoring and Management 
Financiamiento: CONV-000035-2015-FONDECYT-DE 
Tipo de publicación: info:eu-repo/semantics/article
Identificador Handle: http://hdl.handle.net/20.500.12390/2334
DOI: 10.1016/j.enmm.2021.100476
Nivel de acceso: info:eu-repo/semantics/closedAccess
Colección:2.2 Estudios de maestría

Registro Dublin Core completo



Páginas vistas

1
marcado en 27-nov-2021

Google ScholarTM

Check

Altmetric

  • Compartir este item
  • QR Code

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.