Solid-liquid mixing experiments

Simple solid-liquid mixing experiments for the validation of the numerical model... 

Solid-Liquid Mixing Numerical Simulation and Physical Experiments... 

Solid-liquid mixing processes can be simulated with good precision when sound CFD methods are used. The application of a combination of the virtual finite element method and the network-of-zone approach was used in this work to analyze the complex flow and suspension mechanisms in a coaxial mixer. Experiments carried on the laboratory scale confirmed fhe validity of the predictions. 

We are all familiar with use of microwave radiation in cooking food where it increases the speed of reaction. Recently this method has been used to synthesize solid state materials such as mixed oxides. The first solid state reaction experiments were performed in modified domestic ovens, and these are still used, but more specialised (and expensive ) ovens have also been developed to give more control over the conditions. We shall briefly consider how microwaves heat solids and liquids because this gives us insight into which reactions will be good candidates for this method. 

Wifh the solid meal, fhe in vivo duodenal hpolysis was highly and significantly reduced by orlistat wifh both forms of the drug (32.6 to 37.6% of controls Tab. 10.6), and in fhis case, a good correlation was observed with the high level of HPL inhibition (51.2 to 82.6% Tab. 10.5). In vitro experiments revealed that with the mixed solid/liquid meal, the rate of hydrolysis of the meal TG by HPL was slower fhan fhe rate of HPL inhibition by orlistat (Carriere et al., 2001). 

In adsorption experiments M is generally shown on the vertical axis, and the horizontal axis represents absolute pressure P or relative pressure P/P0 (Po is the saturation vapor pressure of an adsorptive at an experimental temperature), partial pressure in mixed gases and absolute or relative concentration for a solid-liquid system. Here, since we are focusing on the property of gas adsorption, a solid-gas system is discussed. 

All the glasses, when not otherwise specified, were sieved at 256 mesh. Glass samples were mixed with NaOH solutions of different concentration in perfectly closed Teflon containers. These containers were placed in an air-thermostated oven at variable temperature for a given time and rotated at 33 rpm. The ratio between the weight of the glass and the weight of the water contained in the alkaline contact solution was considered as the solid/liquid ratio (S/L). At the end of each experiment, the solids were centrifuged from the mother liquors, washed until pH = 9, and oven-dried at 110°C. 

For type B experiments. Criteria I-VIII should be checked. If one of these criterion are not met, then consider decreasing the mixing time 9m or increasing the mass-transfer rates between phases, that is i g-i, and i s i by some means. For example, if criteria VII and VIII are not met, the primary options are (a) use more finely divided material or (b) add baffles to the vessel, since a dramatic increase in the solid-liquid mass-transfer coefficient will result. 

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