Study on the simultaneous removal of fluoride, heavy metals and nitrate by calcium precipitating strain Acinetobacter sp. H12.
J Hazard Mater
; 405: 124255, 2021 03 05.
Article
en En
| MEDLINE
| ID: mdl-33092874
The removal properties and mechanisms of fluoride (F-) and nickel (Ni2+) were studied by biomineralizing bacteria (Acinetobacter sp. H12). The results showed that the removal ratio of F-, Ca2+ and Ni2+ reached 75% (0.031â¯mg·L-1·h-1), 84.96% (2.123â¯mg·L-1·h-1), and 56.67% (0.024â¯mg·L-1·h-1) after 72â¯h, respectively. The removal ratio of nitrate (NO3-) reached 100% (0.686â¯mg·L-1·h-1) after 24â¯h. SEM and XRD images indicated that bioprecipitation of CaF2, Ca5(PO4)3F, Ca5(PO4)3(OH), NiCO3, CaCO3 and Ni were formed, and some of these precipitation used bacteria as nucleation sites to form biological crystal seeds. N2 was the primary product in gas chromatography analysis. Meanwhile, both the fluorescence spectroscopy and fourier transform near-infrared spectroscopy analysis proved that strain H12 had good ability to remove fluoride and nickel ions simultaneously.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Acinetobacter
/
Metales Pesados
Idioma:
En
Revista:
J Hazard Mater
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2021
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
Países Bajos