Stoffübergang in Gas/Flüssigkeits‐Strahlreaktoren und Blasenkolonnen

Abstract

Wissenschaftliche Forschungsarbeit 061 174 -Synopse CHEMIE INGENIEUR TECHNIK Stoff u bergang in GaslFlussig keits-Stra hlreaktoren und Blasenkolonnen *

Mass transfer area in different gas‐liquid reactors as a function of liquid properties

“…For the employed material system, the following correlation was valid, irrespective of the added CMC-quantity, i.e. independent of liquid viscosity: mm wc m AplH = (7.56 f 1.4) X (0.46 I 0.06) (20)…”

Bioprocess Technology

“…Normally, in conventional stirred tank fermenters operating with flocs, external and internal transport limitations cannot be completely excluded. Figure 3.42 shows several bioreactors suitable as perfect bioreactors for quantifying biological rates unaffected by physical transport: (a) the sloping plane biological film fermenter (BFF) of , (b) the thin-layer tubular biofilm fermenter (ThLTBFF) , (c) the horizontal rotary BFF (Hoehn and Ray, 1973;Tomlinson and Snaddon, 1966) and subsequently used by La ; and (e) the completely mixed microbial film fermenter (CMMFF) of . The so-called multipurpose bioreactor (MBR, 1982; includes several concepts of floc and film bioprocessing: Both vertical and horizontal positions are possible using different stirring devices (impellers, rotating drums of different shape) Fig.…”

“…Biological film thickness can be measured using an optical procedure Sanders, 1966;Trulear, 1980) or by means of electrical conductance (Hoehn and Ray, 1973;Norrman et aI., 1977; see also Charaklis et aI., 1982). The biofilm thickness can be controlled by mechanical means or hydrodynamically in the CMMFF or in the ThLTBFF.…”