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Titolo:
Scale-up of tubular photobioreactors
Autore:
Molina, EM; Fernandez, FG; Camacho, FG; Rubio, FC; Chisti, Y;
Indirizzi:
Univ Almeria, Dept Chem Engn, E-04071 Almeria, Spain Univ Almeria Almeria Spain E-04071 ept Chem Engn, E-04071 Almeria, Spain Univ Granada, Dept Chem Engn, E-18071 Granada, Spain Univ Granada Granada Spain E-18071 ept Chem Engn, E-18071 Granada, Spain
Titolo Testata:
JOURNAL OF APPLIED PHYCOLOGY
fascicolo: 3-5, volume: 12, anno: 2000,
pagine: 355 - 368
SICI:
0921-8971(200010)12:3-5<355:SOTP>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
AIRLIFT PHOTOBIOREACTORS; CHLORELLA-PYRENOIDOSA; SOLAR IRRADIANCE; LIGHT REGIME; PRODUCTIVITY; CULTURES; FLUCTUATIONS; MICROALGAE; GROWTH; CYCLES;
Keywords:
light/dark cycles; microalgae; Phaeodactylum tricornutum; photobioreactors; scale-up;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Molina, EM Univ Almeria, Dept Chem Engn, E-04071 Almeria, Spain Univ Almeria Almeria Spain E-04071 gn, E-04071 Almeria, Spain
Citazione:
E.M. Molina et al., "Scale-up of tubular photobioreactors", J APPL PHYC, 12(3-5), 2000, pp. 355-368

Abstract

The effect of the light/dark cycle frequency on the productivity of algal culture at different day-averaged irradiance conditions was evaluated for Phaeodactylum tricornutum grown in outdoor tubular photobioreactors. The photobioreactor scale-up problem was analyzed by establishing the frequency oflight-dark cycling of cells and ensuring that the cycle frequency remainedunchanged on scale-up. The hydrodynamics and geometry related factors wereidentified for assuring an unchanged light/dark cycle. The light/dark cycle time in two different tubular photobioreactors was shown to be identical when the linear culture velocity in the large scale device (U-LL) and that in the small scale unit (U-LS) were related as follows:U-LL = f(9/7)/alpha U-8/7(LS). Here f is the scale factor (i.e., the ratio of large-to-small tube diameters), alpha is a function of the illuminated volumes in the two reactors, and 'dark' refers to any zone of the reactor where the light intensity is less than the saturation value. The above equation was tested in continuous cultures of P. tricornutum in reactors with 0.03 m and 0.06 m diameter tubes,and over the workable culture velocity range of 0.23 to 0.50 m s(-1). The predicted maximum realistic photobioreactor tube diameter was about 0.10 m for assuring a culture performance identical to that in reactors with smaller tubes.

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Documento generato il 19/09/20 alle ore 12:06:24