Membrane, module and process design for super critical CO2 dehydration

A gentle way to dehydrate food in the current industry is the use of supercritical CO2 as an extraction agent. After extraction, the humidified supercritical CO2 stream needs to be regenerated and the supercritical CO2 needs to be separated from the water again. In the conventional process, this is done using large and heavy zeolite columns in a batch process. Membranes modules are considered to be a more sustainable alternative and will reduce investment and maintenance costs, due to their much smaller scale and their ability to be implemented in a continuous process.

In this project the potential of membranes for the dehydration of supercritical CO2 is investigated. Knowledge from material science is used to examine promising membrane materials and to improve these. In addition process design and mass transfer plays an important role in the construction of a suitable membrane module and the determination of the optimal process conditions. All together we aim for an efficient alternative for the dehydration of supercritical CO2.