Design of a new rotating drum bioreactor operated at atmospheric pressure on the bioremediation of a polluted soil.
Bioprocess Biosyst Eng
; 33(5): 573-82, 2010 Jun.
Article
em En
| MEDLINE
| ID: mdl-19847461
This paper reports the effect of the operation and design characteristics of rotating drum bioreactors (RDBs) aerated by natural convection and applied to the treatment of a soil highly polluted with weathered total petroleum hydrocarbons (TPH) (55,000 +/- 2,600 mg/kg). The parameters studied were length to diameter ratio (L/D), rotating speed (N) and lifter type. The highest TPH removal (59.6 +/- 0.7%) was obtained with the RDB of the lowest L/D ratio (1.5). Removals diminished by 27, 36 and 56%, with a ratio increment of 2.1, 3.1 and 5.1, respectively. Increment of the N, at an optimal value and lifter change from straight to helicoidal showed an improvement on the TPH removal of 20 and 30%, respectively. According to these results, slurry surface renewal through the variation of the N and the change of slurry flow was able to improve TPH removal in RDBs operated by natural convection.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Poluentes do Solo
/
Petróleo
/
Reatores Biológicos
Idioma:
En
Revista:
Bioprocess Biosyst Eng
Assunto da revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Alemanha