Screening and characterization of a bioflocculant produced by Aeromonas sp / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 274-278, 2007.
Artículo
en Inglés
| WPRIM
| ID: wpr-249855
ABSTRACT
<p><b>OBJECTIVE</b>To isolate the bioflocculant-producing bacteria from activated sludge and investigate the flocculating characteristics of the newly isolated bioflocculant.</p><p><b>METHODS</b>Bacteria were screened from activated sludge samples to isolate bioflocculant-producing bacteria. Flocculating activity was used as a measure of the flocculating capability of the bioflocculant.</p><p><b>RESULTS</b>A novel bioflocculant-producing bacterium was isolated, which was identified to belong to genus Aeromonas and named as Aeromonas sp. N11. Flocculating activity increased in the presence of K+, Na+, or Ca2+. The highest flocculating activities for kaolin suspension were obtained in acidic pH ranges, and optimum pHs for it were 3.0, 4.0, and 5.0 with 1 mmol/L K+, Ca+, and Na+ present, respectively. The highest flocculating activities for soil suspension were observed at pH 8.0. The bioflocculant had a good flocculating activity and could achieve a flocculating activity of 92.4% for kaolin suspension at a dosage of only 1 mgxL(-1), and its activity in kaolin suspension was decreased by only 9.2% after heating at 100 degrees C for 60 min.</p><p><b>CONCLUSION</b>The bioflocculant produced by Aeromonas sp. N11 has strong flocculating activity and high stability, which affords high possibility of its practical use.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Aeromonas
/
Medios de Cultivo
/
Floculación
/
Concentración de Iones de Hidrógeno
/
Caolín
/
Metabolismo
Tipo de estudio:
Estudio diagnóstico
/
Estudio pronóstico
/
Estudio de tamizaje
Idioma:
Inglés
Revista:
Biomedical and Environmental Sciences
Año:
2007
Tipo del documento:
Artículo
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