Removal of humic acid and Cr(â
¥) from water using ZnO-30N-zeolite.
Chemosphere
; 279: 130491, 2021 Sep.
Article
en En
| MEDLINE
| ID: mdl-33878697
ABSTRACT
The mutual influence of humic acid and Cr(â
¥) on water purification using ZnO-30N-zeolite was investigated in the laboratory. The removal of humic acid by ZnO-30N-zeolite with both pollutants present reached 90% in 5 min. With humic acid alone, more than one day was required to reach the same level of removal. Synergy between humic acid and chromium was thus demonstrated in their removal process by ZnO-30N-zeolite. However, the presence of humic acid showed no obvious effect on the removal capacity of Cr(â
¥) by ZnO-30N-zeolite. X-ray photoelectron spectra showed that Cr(VI) was reduced to Cr(â
¢) in the process by both humic acid and ZnO-30N-zeolite. The kinetic mechanism of synergistic removal of humic acid and Cr(â
¥) by ZnO-30N-zeolite in binary pollutant system was also proposed.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Contaminantes Químicos del Agua
/
Óxido de Zinc
/
Zeolitas
/
Purificación del Agua
Idioma:
En
Revista:
Chemosphere
Año:
2021
Tipo del documento:
Article