Removal of Acid Orange G Azo Dye by Polycation-Modified Alpha Alumina Nanoparticles.
Chem Asian J
; 18(17): e202300404, 2023 Sep 01.
Article
em En
| MEDLINE
| ID: mdl-37440587
ABSTRACT
Highly positively charged poly(vinyl benzyl trimethylammonium chloride) (PVBMA) was successfully synthesized with approximately 82% of yield. The PVBMA was characterized by the molecular weight (Mw ) of 343.45â
g mol-1 and the molecular weight distribution, (D) of 2.4 by 1 H NMR and SEC measurements. The PVBMA was applied as an effective agent for α-Al2 O3 surface modification in the adsorptive removal of the azo dye acid orange G (AOG). The AOG removal performance was significantly enhanced at all pH compared to without surface modification. The experimental parameters were optimal at pHâ
8, free ionic strength, 15â
min of adsorption time, and 5â
mg mL-1 α-Al2 O3 adsorbents. The AOG adsorption which was mainly controlled by the PVBMA-AOG electrostatic attractions was better applicable to the Langmuir isotherm and the pseudo-second kinetic model. The PVBMA-modified α-Al2 O3 demonstrates a high-performance and highly reusable adsorbent with great AOG performances of approximately 90.1% after 6 reused cycles.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Chem Asian J
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Vietnã