Desolventizing of Jatropha curcas oil from azeotropes of solvents using ceramic membranes.
Environ Technol
; 38(23): 2928-2938, 2017 Dec.
Article
en En
| MEDLINE
| ID: mdl-28088876
The separation of Jatropha curcas oil from azeotropes of ethyl alcohol-n-hexane and isopropyl alcohol-n-hexane using ceramic membranes with different cutoffs (5, 10 and 20â
kDa) is presented. The mass ratios of oil:azeotropes (O:S) studied were 1:3 for feeding pressures of 0.1, 0.2 and 0.3â
MPa, and 1:1 for the feeding pressure of 0.1â
MPa. Isopropyl alcohol was the best solvent for the membranes conditioning to permeate n-hexane (240â
kg/m2â
h). In the separation of J. curcas oil and azeotropes of solvents, both membranes showed oil retention and total flux decreases with time. Overall, the lowest decrease in the retentions was reached in the 5â
kDa membrane, while the lowest decrease in the total flux was reached in the 20â
kDa. In the separation of oil and ethyl alcohol-n-hexane azeotrope, the best retention at 60â
min of the process was equal to 17.3â
wt% in the 20â
kDa membrane at 0.3â
MPa and O:S ratio equalled to 1:3. In this condition, the total permeate flux was 17.5â
kg/m2â
h. Different retentions and permeabilities are provided when changing the O:S ratio, the feeding pressure and the molecular weight cutoff of membranes.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Solventes
/
Aceites de Plantas
/
Cerámica
/
Jatropha
/
Fraccionamiento Químico
Idioma:
En
Revista:
Environ Technol
Asunto de la revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Reino Unido