Influence of biomass on hydrodynamics of an internal loop airlift reactor
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M. Juraščík
,
M. Hucík
Abstract
The effect of the biomass presence on the overall circulation velocity, the linear velocities both in the riser and the downcomer and the overall gas hold-up was studied in a three-phase internal loop airlift reactor (ILALR). The measured data were compared with those obtained using a two-phase system (air—water). All experiments were carried out in a 40 dm3 ILALR at six different biomass concentrations (ranging from 0 g dm−3 to 7.5 g dm−3), at a temperature of 30°C, under atmospheric pressure. Air and water were used as the gas and liquid model media, respectively. Pellets of Aspergillus niger produced during the fermentation of glucose to gluconic acid in the ILALR were considered solid phase. In addition, liquid velocities were measured during the fermentation of glucose to gluconic acid using Aspergillus niger. All measurements were performed in a bubble circulation regime. At given experimental conditions the effect of the biomass on the circulation velocities in the ILALR was negligible. However, increasing of the biomass concentration led to lower values of the total gas hold-up.
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© 2006 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Coupled membrane process applied to fruit juice concentration
- Residence time distribution study for the catalytic packing MULTIPAK®
- Prediction of gaseous emissions from industrial stacks using an artificial intelligence method
- Production of process water using integrated membrane processes
- Kinetics of pyrolysis and properties of carbon black from a scrap tire
- Extraction of Re(VII) by neutral and basic extractants
- Multiple steady states in a CSTR with total condenser: Comparison of equilibrium and nonequilibrium models
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- Modelling of enzymatic reaction in an internal loop airlift reactor
- Safety analysis and risk identification for a tubular reactor using the HAZOP methodology
- Soil adsorption defluoridation of drinking water for an Ethiopian rural community
- Isolation and identification of anthraquinones of Caloplaca cerina and Cassia tora
- Selection of carrier for immobilization of fructosyltransferase from Aureobasidium pullulans
