10 research outputs found
Modellierung des Absetzverhaltens einer flĂŒssig-flĂŒssig Dispersion - Kombinationaus Impuls- und Tropfenpopulationsbilanzen
Modellierung des Absetzverhaltens einer flĂŒssig-flĂŒssig Dispersion - Kombinationaus Impuls- und Tropfenpopulationsbilanzen
Automation of a Procedure for the Experimental Investigation of LiquidâLiquid Phase Separation
Liquid-liquid centrifugal separation : New equipment for optical (photographic) evaluation at laboratory scale
Vorrichtung und Verfahren zur Untersuchung des Phasentrennverhaltens von wenigstens zwei Phasen im Zentrifugalfeld
Conversion of Polysaccharides to Sugar Alcohols: A Modeling Approach Based on Oligosaccharides
Droplet Size Distributions of LiquidâLiquid Dispersions in Centrifugal Pumps
The generation of liquid-liquid dispersions with defined droplet size distributions is an important aspect for process equipment design. In this work, two centrifugal pumps with different impeller diameters were used to generate dispersions at selected operating points for a paraffin oil-water system. The droplet break-up phenomena within the centrifugal pumps were analyzed using a transparent pump design in combination with high-speed imaging. Droplet size distributions at centrifugal pump discharge nozzle were recorded with optical probe measurement technologies and evaluated by means of image processing using a neural network. The influence of impeller diameter, rotational speed, volumetric flow rate and dispersed phase fraction are discussed. Experimental data is correlated using fluid properties, operating data as well as centrifugal pump dimensions. The correlations developed from results of this work serve as a basis for the equipment design of centrifugal pumps
Extracorporeal Hyperoxygenation Therapy (EHT) for Carbon Monoxide Poisoning: In-Vitro Proof of Principle
Carbon monoxide (CO) poisoning is the leading cause of poisoning-related deaths globally. The currently available therapy options are normobaric oxygen (NBO) and hyperbaric oxygen (HBO). While NBO lacks in efficacy, HBO is not available in all areas and countries. We present a novel method, extracorporeal hyperoxygenation therapy (EHT), for the treatment of CO poisoning that eliminates the CO by treating blood extracorporeally at elevated oxygen partial pressure. In this study, we proof the principle of the method in vitro using procine blood: Firstly, we investigated the difference in the CO elimination of a hollow fibre membrane oxygenator and a specifically designed batch oxygenator based on the bubble oxygenator principle at elevated pressures (1, 3 bar). Secondly, the batch oxygenator was redesigned and tested for a broader range of pressures (1, 3, 5, 7 bar) and temperatures (23, 30, 37 °C). So far, the shortest measured carboxyhemoglobin half-life in the blood was 21.32 min. In conclusion, EHT has the potential to provide an easily available and effective method for the treatment of CO poisoning