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Membrane emulsification is a relatively new technique to produce emulsions. In this method the oil phase is pushed through a membrane, a sieve with very small holes, and forms droplets in the water phase at the other side of the membrane. The most important advantage of this technique is that all the formed droplets have the same size and the emulsion has therefore a better quality. In this research, the influence of surfactants on the droplet formation and detachment process has been studied with the help of experiments and computer simulations.The results showed that both the concentration surfactant and the velocity of the oil phase flowing through the membrane influence the droplet size.

Membrane emulsification is a relatively new technique to produce emulsions. In this method the oil phase is pushed through a membrane, a sieve with very small holes, and forms droplets in the water phase at the other side of the membrane. The most important advantage of this technique is that all the formed droplets have the same size and the emulsion has therefore a better quality. In this research, the influence of surfactants on the droplet formation and detachment process has been studied with the help of experiments and computer simulations.The results showed that both the concentration surfactant and the velocity of the oil phase flowing through the membrane influence the droplet size.

In chemical crop protection, the amount of deposition and drift is the cumulative result of a large number of individual drops travelling through air. When investigating the flow of drops through air, one has to be aware of kinetic aspects as well as evaporation of water from the drops. A theoretical discussion of kinetic aspects is carried out for sedimentation of drops in still air. The presented theory can be used for windy situations as well, with basically straight- forward adaptations. The theoretical discussion of evaporation deals with aqueous drops in air. This derivation bears considerably on the kinetic aspects of drops in air. A major application for both kinetic aspects and evaporation is their implementation in the IDEFICS spray drift model. However, the kinetic and evaporation models are presented in a general way, and can be implemented in other applications as well. Extension to systems based on solvents other than water can be performed easily.

In chemical crop protection, the amount of deposition and drift is the cumulative result of a large number of individual drops travelling through air. When investigating the flow of drops through air, one has to be aware of kinetic aspects as well as evaporation of water from the drops. A theoretical discussion of kinetic aspects is carried out for sedimentation of drops in still air. The presented theory can be used for windy situations as well, with basically straight- forward adaptations. The theoretical discussion of evaporation deals with aqueous drops in air. This derivation bears considerably on the kinetic aspects of drops in air. A major application for both kinetic aspects and evaporation is their implementation in the IDEFICS spray drift model. However, the kinetic and evaporation models are presented in a general way, and can be implemented in other applications as well. Extension to systems based on solvents other than water can be performed easily.