Details
| Translated title of the contribution | Laminar mixing in miniature hollow-fibremembrane reactors by using secondary flows (Part 1) |
|---|---|
| Original language | German |
| Pages (from-to) | 1066-1073 |
| Number of pages | 8 |
| Journal | Chemie-Ingenieur-Technik |
| Volume | 83 |
| Issue number | 7 |
| Publication status | Published - 9 Jun 2011 |
Abstract
Miniaturization is a method of allowing defined reaction conditions in modern process engineering. It also allows a continuous operation mode, short diffusion paths and control of shear stress. An unfavorable consequence of miniaturization is the use of small flow rates and ineffective laminar mixing. Regarding processes that are well known in macro scale, problems arise when they are transferred to micro scale. In micro scale, transport mechanisms in boundary layers play a major role, but are widely unknown. Miniature hollow-fiber membrane reactors (mini HFMR) are developed to aim a defined adjustment of process parameters. Their conceptual characteristics are indirect aeration, integrated educt feed and product removal and controlled shear rate. Because secondary flows are appropriate to enhance mixing [1], their principles will be applied to the mini HFMR. Dean vortices on one side and the von Kármán vortex street on the other are applied to enhance the transport between membrane and liquid flow. To work straightforward, first numerical simulations are performed. Later on the results of the simulations will be validated by experiments. Based on two different reactor types it will be shown that secondary flows enhance the mass transfer significantly while keeping the shear stress low. This way miniaturization turns out to be an all appropriate method for various fields of bio process engineering.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Chemie-Ingenieur-Technik, Vol. 83, No. 7, 09.06.2011, p. 1066-1073.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Laminares mischen in miniatur-hohlfasermembranreaktoren durch ausnutzung von sekundärströmungen (Teil 1)
AU - Kopf, Florian
AU - Schlüter, Michael
AU - Kaufhold, Dennis
AU - Hilterhaus, Lutz
AU - Liese, Andreas
AU - Wolff, Christoph
AU - Beutel, Sascha
AU - Scheper, Thomas
PY - 2011/6/9
Y1 - 2011/6/9
N2 - Miniaturization is a method of allowing defined reaction conditions in modern process engineering. It also allows a continuous operation mode, short diffusion paths and control of shear stress. An unfavorable consequence of miniaturization is the use of small flow rates and ineffective laminar mixing. Regarding processes that are well known in macro scale, problems arise when they are transferred to micro scale. In micro scale, transport mechanisms in boundary layers play a major role, but are widely unknown. Miniature hollow-fiber membrane reactors (mini HFMR) are developed to aim a defined adjustment of process parameters. Their conceptual characteristics are indirect aeration, integrated educt feed and product removal and controlled shear rate. Because secondary flows are appropriate to enhance mixing [1], their principles will be applied to the mini HFMR. Dean vortices on one side and the von Kármán vortex street on the other are applied to enhance the transport between membrane and liquid flow. To work straightforward, first numerical simulations are performed. Later on the results of the simulations will be validated by experiments. Based on two different reactor types it will be shown that secondary flows enhance the mass transfer significantly while keeping the shear stress low. This way miniaturization turns out to be an all appropriate method for various fields of bio process engineering.
AB - Miniaturization is a method of allowing defined reaction conditions in modern process engineering. It also allows a continuous operation mode, short diffusion paths and control of shear stress. An unfavorable consequence of miniaturization is the use of small flow rates and ineffective laminar mixing. Regarding processes that are well known in macro scale, problems arise when they are transferred to micro scale. In micro scale, transport mechanisms in boundary layers play a major role, but are widely unknown. Miniature hollow-fiber membrane reactors (mini HFMR) are developed to aim a defined adjustment of process parameters. Their conceptual characteristics are indirect aeration, integrated educt feed and product removal and controlled shear rate. Because secondary flows are appropriate to enhance mixing [1], their principles will be applied to the mini HFMR. Dean vortices on one side and the von Kármán vortex street on the other are applied to enhance the transport between membrane and liquid flow. To work straightforward, first numerical simulations are performed. Later on the results of the simulations will be validated by experiments. Based on two different reactor types it will be shown that secondary flows enhance the mass transfer significantly while keeping the shear stress low. This way miniaturization turns out to be an all appropriate method for various fields of bio process engineering.
KW - Bioreactor
KW - Dean vortices
KW - Hollow fiber membrane
KW - Kármán vortex street
KW - Mixing
KW - Numerical simulation
KW - Secondary flows
UR - http://www.scopus.com/inward/record.url?scp=84860388917&partnerID=8YFLogxK
U2 - 10.1002/cite.201100044
DO - 10.1002/cite.201100044
M3 - Artikel
AN - SCOPUS:84860388917
VL - 83
SP - 1066
EP - 1073
JO - Chemie-Ingenieur-Technik
JF - Chemie-Ingenieur-Technik
SN - 0009-286X
IS - 7
ER -