Abstract
The behaviour of microporous hydrophobic membrane sensors for volatile solutes was studied experimentally and theoretically in different conditions. Attention was focused on the influence of physico-chemical parameters on mass transfer in the sensors, and consequently, on the response of the sensors. The effects of the gas flow rate, membrane surface area, temperature, stirring speeds, chemical additives in solution, nature of the solute and the polymer material were analysed. The sensors were successfully used in alcoholic fermentations for on-line monitoring.
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