Biodegradation of p-cresol and sulfide removal by a marine-denitrifying consortium.
J Basic Microbiol
; 55(2): 180-5, 2015 Feb.
Article
en En
| MEDLINE
| ID: mdl-25418931
ABSTRACT
The simultaneous removal of sulfide and p-cresol was carried out by using a marine-denitrifying consortium collected in the coastal zone of Sonora, Mexico. Different experimental conditions were used to evaluate the capacity of the consortium to simultaneously eliminate nitrate, sulfide, and p-cresol. For instance, the first set of assays was conducted at different sulfide concentrations (20, 50, and 100 mg S(2À) L(À1) ), with a fixed concentration of p-cresol (45 mg C L(À1) ). The second set of assays was developed at different concentrations of p-cresol (45, 75, and 100 mg C L(-1) ), in the presence of 20 mg S(2À) L(À1) . In all cases, the concentration of nitrate was stoichiometrically added for the complete oxidization of the substrates. The results showed removal efficiencies up to 92% for p-cresol and nitrate at 20 and 50 mg S(2À) L(À1) ; whereas at 100 mg S(2À) L(À1) removal efficiencies were 77% and 59% for p-cresol and nitrate, respectively. On the other hand, sulfide (20 mg L(À1) ) was completely removed under different concentrations of p-cresol tested, with a partial accumulation of nitrite according to the increment of p-cresol concentration. The results obtained indicate that the marine consortium was able to simultaneously remove the pollutants studied.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Sulfuros
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Contaminantes Químicos del Agua
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Sedimentos Geológicos
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Cresoles
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Desnitrificación
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Consorcios Microbianos
/
Nitratos
País/Región como asunto:
Mexico
Idioma:
En
Revista:
J Basic Microbiol
Asunto de la revista:
MICROBIOLOGIA
Año:
2015
Tipo del documento:
Article