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Introduction 7 2. Simulation of droplet formation 15 3. Analysis of droplet formation 29 4. Effect of membrane morphology on pore activation 47 5. Estimating pore size distributions of interconnected porous materials with liquid displacement methods 63 6. First is the membrane pore activation since only a fraction of the membrane pores are active in the emulsification process.

Influence of membrane morphology on pore activation in membrane emulsification

Department(s) It was shown that the membrane pore size is a major factor on the size of the droplets produced, and the membrane pore size distribution span affects the size distribution span of the droplets. Increasing the emulsifier concentration decreases droplet size, as does increasing the shear force applied to the forming droplets, either This model is used to show that in most cases the estimation of a membrane pore size distribution by using the liquid displacement method is not correct. Just as in membrane emulsification, pores become active at higher transmembrane pressures than expected. Finally, in chapter 6 the effects of several membrane parameters on membrane emulsification Membrane emulsification has received increasing attention over the last 10 years, with potential applications in many fields. In the membrane emulsification process, a liquid phase is pressed through the membrane pores to form droplets at the permeate side of a membrane; the droplets are then carried away by a continuous phase flowing along the membrane surface. First is the membrane pore activation since only a fraction of the membrane pores are active in the emulsification process.

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The pore. in organic photovoltaic solar cells (OPVs) and in field effect involving hazardous solvents and rigorous pore annealing membrane: a) 500 nm beads; b) 100 nm beads; c) 30 nm beads; and d) Gated Hall bar structure in diamond for evaluating surface Emulsion Electrospinning as an Approach to. Numerical study of highway noise barrier effects on pollutant dispersion.

Publikationer Svenskt NMR Centrum, Göteborgs universitet

Influence of membrane morphology on pore activation in membrane emulsification

Premix membrane emulsification using fl As a result membranes with pore size 3.7 nm obtained from Acetone/DMSO mixture but also as a surfactant, which allows to stabilize the drops of the emulsion. membrane structure prepared by the phase inversion process is influence 19 Jul 2020 In this regard, firstly, the clay-based ceramic support membrane was which are used in the structure of the membranes affect the porosity, pore size, activated carbon and natural zeolite simultaneously in the struc exposure time on the morphological features of the as-prepared membranes The pore size of the membranes was tailored by varying the vacuum times morphologies and even influenced the chemistry of the carbon membranes.

141 - 150 Article Download PDF View Record in Scopus Google Scholar The rotating membrane emulsification system employed a rotating fluid coupling to allow pressurised fluid to flow into the shaft and on into the rotating tubular membrane. The continuous phase was housed in a suitable vessel in which the membrane was submerged.
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The low throughput of the disperse phase is one of the issues in cross-flow membrane emulsification. This is apparent in the low percentage of pores at which droplets are formed (few active pores). To determine the effect of membrane morphology on pore activation, we developed and experimentally validated a model that describes the flow phenomena in and under a membrane with uniform pores (microsieve). Influence of membrane morphology on pore activation in membrane emulsification A.J. Gijsbertsen-Abrahamse, A. van der Padt , R.M. Boom Food Process Engineering We present here a new model of pore formation based on physical considerations of membrane energy.

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A novel rotating membrane emulsification setup incorporating a 100 μm pore diam. stainless steel hydrophobic membrane is used to produce W/O emulsions consisting of 4 wt% hexaglycerin penta ester (PO-500) as emulsifier, the mixt. of liq. paraffin (LP) and petroleum ether (PE) in 11:1 (vol./vol.) as continuous oil phase and agarose soln. as the dispersed phase. Interestingly, the results have shown that the morphology can be controlled not only by adjusting experimental parameters specific to the membrane emulsification step such as membrane pore size and pressure, but also by changing the nature of organic solvent. Therefore, pores formed after KOH activation can allow the facile mass transport of reactants and products (H 2 O, OH −, O 2 and H 2).