Magnetic mesoporous Fe/carbon aerogel structures with enhanced arsenic removal efficiency.
J Colloid Interface Sci
; 420: 74-9, 2014 Apr 15.
Article
em En
| MEDLINE
| ID: mdl-24559703
ABSTRACT
Wastewater treatment has drawn significant research attention due to its associated environmental issues. Adsorption is a promising method for treating wastewater. The development of an adsorbent with a high surface area is important. Therefore, we successfully developed mesoporous Fe/carbon aerogel (CA) structures with high specific surface areas of 48 7m(2)/g via the carbonization of composite Fe3O4/phenol-formaldehyde resin structures, which were prepared using a hydrothermal process with the addition of phenol. The mesoporous Fe/CA structures were further used for the adsorption of arsenic ions with a maximum arsenic-ion uptake of calculated 216.9 mg/g, which is higher than that observed for other arsenic adsorbents. Ferromagnetic behavior was observed for the as-prepared mesoporous Fe/CA structures with an excellent response to applied external magnetic fields. As a result, the adsorbent Fe/CA structures can be easily separated from the solution using an external magnetic field. This study develops the mesoporous Fe/CA structures with high specific surface areas and an excellent response to an applied external magnetic field to provide a feasible approach for wastewater treatment including the removal of arsenic ions.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fenóis
/
Polímeros
/
Arsênio
/
Poluentes Químicos da Água
/
Carbono
/
Compostos Férricos
/
Purificação da Água
/
Águas Residuárias
/
Formaldeído
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article