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Naslov:Kefir grains production - An approach for volume optimization of two stage bioreactor system
Avtorji:Goršek, Andreja (Avtor)
Tramšek, Marko (Avtor)
Datoteke:URL http://dx.doi.org/doi:10.1016/j.bej.2008.06.009
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano ()
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Opis:The main objective of the present study was to design a continuous two-stage bioreactor system for kefir grains production. Based on the experimental data of time-depended kefir grain mass increase and average pH profile during kefir grains batch propagation, parameters of predictive growth and exponential pH models were initially estimated. Afterwards, the non-linear programming (NLP) optimization problem for estimating the optimal volumes of two unequal in series connected continuously stirred tank bioreactors (CSTB) has been developed. The NLP problem is based on criterion of minimal total holding time (MTHT), kefir grain mass balances in CSTB and parameters of the growth and pH models. The results showed that novel kefir grains production plant with two-stage continuous operation, at capacity, qm,KG,pr=3 kgh-1 and conversion, Xo,2=0.980, would primarily require investment in two CSTB with V1=5.93 m3 and V2=5.62 m3, respectively. Technological and economical authorization for a two-stage continuous bioreactor system was mainly confirmed with a more than five times lower total bioreactor volume compared to one-stage plant.
Ključne besede:chemical processing, bioprocesses, milk products, kefir grains production, bioreactor design, modeling, optimization
Leto izida:2008
UDK:66.01:637.1
URN:URN:SI:UM:DK:D9G7QBRS
COBISS_ID:12374550 Povezava se odpre v novem oknu
ISSN pri članku:1369-703X
Število ogledov:1715
Število prenosov:41
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Gradivo je del revije

Naslov:Biochemical engineering journal
Skrajšan naslov:Biochem. eng. j.
Založnik:Elsevier Science
ISSN:1369-703X
COBISS.SI-ID:3515414 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:kemijska procesna tehnika, bioprocesi, mlečni izdelki, kefir, kefirna zrna


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