Efeito da concentração inicial de oxigênio no coeficiente de aeração para experimentos de DBO de longo prazo
In: Acta Scientiarum. Biological Sciences, Jg. 25 (2003-04-18)
Online
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Zugriff:
Long-term incubations of biochemical oxygen demand (BOD) were performed to determine the aeration coefficient derived from oxygen uptake experiments. The BOD bottles were prepared with distilled water and the incubation occurred in the dark, under controlled temperature (19.4oC). The bottles were submitted to two different treatments based on the initial dissolved oxygen (DO) concentrations (Treatment 1: 1.43mg L -1 and Treatment 2: 7.67mg L -1 ). The DO concentrations were measured with an OD meter during 52 days. The results were fitted to a first-order kinetics model. The BOD bottles showed an increase in DO concentration for both treatments and the mean aeration coefficient (ka) was 0.065 a day -1 . The fittings pointed to some dispersion in the ka values, and the initial concentration of DO in the BOD bottles does not interfere in the aeration process, being a random process
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Efeito da concentração inicial de oxigênio no coeficiente de aeração para experimentos de DBO de longo prazo
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Autor/in / Beteiligte Person: | Marcela Bianchessi da Cunha Santino ; Irineu Bianchini Junior |
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Zeitschrift: | Acta Scientiarum. Biological Sciences, Jg. 25 (2003-04-18) |
Veröffentlichung: | Universidade Estadual de Maringa, 2003 |
Medientyp: | unknown |
ISSN: | 1807-863X (print) ; 1679-9283 (print) |
DOI: | 10.4025/actascibiolsci.v25i2.1976 |
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