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izvor podataka: crosbi

Mathematical modelling and process optimization of a continuous 5-stage bioreactor cascade for production of poly[-(R)-3-hydroxybutyrate] by Cupriavidus necator (CROSBI ID 187654)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Horvat, Predrag ; Vrana Špoljarić, Ivna ; Lopar, Markan ; Atlić, Aid ; Koller, Martin ; Braunegg, Gerhart Mathematical modelling and process optimization of a continuous 5-stage bioreactor cascade for production of poly[-(R)-3-hydroxybutyrate] by Cupriavidus necator // Bioprocess and biosystems engineering, 36 (2013), 9; 1235-1250. doi: 10.1007/s00449-012-0852-8

Podaci o odgovornosti

Horvat, Predrag ; Vrana Špoljarić, Ivna ; Lopar, Markan ; Atlić, Aid ; Koller, Martin ; Braunegg, Gerhart

engleski

Mathematical modelling and process optimization of a continuous 5-stage bioreactor cascade for production of poly[-(R)-3-hydroxybutyrate] by Cupriavidus necator

A multistage system for poly(hydroxyalkanoate) (PHA) production consisting of five continuous stirred tank reactors in series (5-CSTR) with Cupriavidus necator DSM 545 as production strain was modelled using formal kinetic relations. Partially growth-associated production of PHA under nitrogen limited growth was chosen as modelling strategy, thus the Luedeking-Piret’s model of partial growth-associated product synthesis was applied as working hypothesis. Specific growth rate relations adjusted for double substrate (C and N source) limited growth according to Megee et al. and Mankad-Bungay relation were tested. The first stage of the reactor cascade was modelled according to the principle of nutrient balanced continuous biomass production system, the second one as two substrate controlled process, while the three subsequent reactors were adjusted to produce PHB under continuous C source fed and nitrogen deficiency. Simulated results of production obtained by the applied mathematical models and computational optimization indicate that PHB productivity of the whole system could be significantly increased (from experimentally achieved 2.14 g L^-1 h^-1 to simulated 9.95 g L^-1 h^-1) if certain experimental conditions would have been applied (overall dilution rate, C and N source feed concentration). Additionally, supplemental feeding strategy for switching from batch to continuous mode of cultivation was proposed to avoid substrate inhibition.

continuous production ; cupriavidus necator ; mathematical modelling ; multistage fermentation ; poly (3-hydroxybutyrate)

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Podaci o izdanju

36 (9)

2013.

1235-1250

objavljeno

1615-7591

1615-7605

10.1007/s00449-012-0852-8

Povezanost rada

Biotehnologija

Poveznice
Indeksiranost