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Titolo:
The studies on the oxygen mass transfer coefficient in a bioreactor
Autore:
Ozbek, B; Gayik, S;
Indirizzi:
Yildiz Tech Univ, Dept Chem Engn, TR-34210 Istanbul, Turkey Yildiz Tech Univ Istanbul Turkey TR-34210 ngn, TR-34210 Istanbul, Turkey
Titolo Testata:
PROCESS BIOCHEMISTRY
fascicolo: 8-9, volume: 36, anno: 2001,
pagine: 729 - 741
SICI:
1359-5113(200103)36:8-9<729:TSOTOM>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-LIQUID CONTACTORS; AGITATED VESSELS; BUBBLE COLUMN; STIRRED TANKS; SCALE-UP; ABSORPTION;
Keywords:
oxygen mass transfer coefficient; process variables; correlation studies; biomass support particles (BSP); viscosity; bioreactor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Ozbek, B Yildiz Tech Univ, Dept Chem Engn, Davutpasa Campus, TR-34210 Istanbul, Turkey Yildiz Tech Univ Davutpasa Campus Istanbul Turkey TR-34210 urkey
Citazione:
B. Ozbek e S. Gayik, "The studies on the oxygen mass transfer coefficient in a bioreactor", PROCESS BIO, 36(8-9), 2001, pp. 729-741

Abstract

The effects of process variables on the volumetric liquid phase mass transfer coefficient of oxygen, k(L)a, in a stirred bioreactor were investigatedby the static gassing-out method. The process variables chosen were impeller speed. air flow rate, temperature. viscosity and loading (%) of biomass support particles (BSP). The k(L)a value was obtained as 2.766 min(-1) in distilled water at process variables such as stirrer speed 300 rpm, air flowrate 0.3 1 min(-1), temperature 37 degreesC and pH 7. By using the same process conditions, k(L)a values obtained in glycerol (50%) + distilled water, distilled water containing BSP (loading 25%, particle volume 0.1625 cm(3)) and glycerol (50%) + distilled water containing BSP (loading 25%, particle volume 0.1625 cm(3)) were 1.383, 0.933 and 0.450 min(-1), respectively. The exponents representing dependence of k(L)a on the process variables werealso obtained by using oxygen absorption data. then these values were compared with literature values. (C) 2001 Elsevier science Ltd. All rights reserved.

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Documento generato il 27/09/20 alle ore 05:57:38