In this paper, we consider a vertically positioned cylindrical filtering element. Filtering occurs in the radial direction, therefore, direction of velocities liquid and suspended particles coincide with direction. The flow can be considered to one-dimensional radially axisymmetric. To describe such process, axisymmetric Stefan problem will formulated. mass balance formalism Darcy’s law are uti...

Filtration steps are ubiquitous in biotech processes due to the simplicity of operation, ease of scalability and the myriad of operations that they can be used for. Microfiltration, depth filtration, ultrafiltration and diafiltration are some of the most commonly used biotech unit operations. For clean feed streams, when fouling is minimal, scaling of these unit operations is performed linearly...

drilling fluid is the most important lifeline of the drilling operation, that main task is facilitate the cuttings removal of the drilling. there are varieties of drilling fluids such as sodium bentonite based-drilling fluid is called “mud” and drilling foam or surfactant based-drilling fluid is called “soap”. the present work aims are study on the modified drilling mud properties by using the ...

Many advanced ceramics are formed by colloidal consolidation using techniques such as sedimentation, centrifugation, or pressure filtration. In all these, the minimization of density variations of various colloidally-consolidated cakes has not been examined systematically until recently. Schilling et al.' used y-ray densitometry to study the density variations in a sedimented cake and showed th...

Globally, mining operators focus increasingly on tailings filtration to recover process water and store more safely. Generally, required contents below 20-w% are reached by using filter presses. To maintain high efficiency, complete cake detachment is needed because incomplete discharge reduces plant performance. However, can occur in different ways, mainly influenced adhesion of the cloth as w...