Synthesis, and characterization of chitosan bearing pyranoquinolinone moiety for textile dye adsorption from wastewater.
Water Sci Technol
; 81(3): 421-435, 2020 Feb.
Article
em En
| MEDLINE
| ID: mdl-32385196
ABSTRACT
A novel compound was synthesized by the reaction of the amino group of the chitosan with the formyl group of pyrano[3,2-c]quinoline-3-carboxaldehyde moiety, which produced chitosan modified with a Schiff base (chitosan Schiff base). The structure of the newly prepared composite was elucidated. Chitosan Schiff base was used to remove the textile anionic remazol red (RR) dye from wastewater. The kinetic data and adsorption isotherm were best fitted by the pseudo-second-order kinetic model and the Freundlich isotherm, respectively. Thermodynamic parameters were calculated. Chitosan Schiff base resulted in 100% removal of carcinogenic dye at 2 min only with qm 344.8 mg/g, and may do the same for other anionic reactive dyes, thus avoiding secondary pollution.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Quitosana
Idioma:
En
Revista:
Water Sci Technol
Assunto da revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article