Simultaneous di-oxygenation and denitrification in an internal circulation baffled bioreactor.
Biodegradation
; 28(2-3): 195-203, 2017 06.
Article
en En
| MEDLINE
| ID: mdl-28260134
ABSTRACT
An internal circulation baffled bioreactor was employed to realize simultaneous di-oxygenation of phthalic acid (PA) and denitrification of nitrate, which require aerobic and anoxic conditions, respectively. Adding a small concentration of succinate as an exogenous electron donor stimulated PA di-oxygenation, which produced readily oxidizable downstream products whose oxidation also enhanced denitrification of nitrate; succinate addition also stimulated denitrification. Depending on the concentration of PA, addition of 0.17 mM succinate increased the PA removal rate by 25 and 42%, while the corresponding nitrate removal rate was increased by 73 and 51%. UV/H2O2 advanced oxidation of PA had the same effects as adding succinate, since succinate is generated by UV/H2O2; this acceleration effect was approximately equivalent to adding 0.17 mM succinate.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Oxígeno
/
Reactores Biológicos
/
Desnitrificación
Idioma:
En
Revista:
Biodegradation
Asunto de la revista:
BIOQUIMICA
/
SAUDE AMBIENTAL
Año:
2017
Tipo del documento:
Article