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Immobilisation of carbonic anhydrase in thin film composite membranes for CO2 capture and utilisation in Gas Liquid Membrane contactors

Péters, Ariane
(2020)

Files

Péters_17491400_2020.pdf
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Details

Supervisors
Damien Debecker ; Patricia Luis Alconero
Faculty
Faculté des bioingénieurs
Degree label
Master [120] : bioingénieur en chimie et bioindustries
Abstract
Aqueous solvents have been recently proposed as substitutes to Amine-based solvents for CO2 absorption in membrane contactors. However, their absorption kinetics remain significantly slower. Carbonic anhydrase has been considered as biocatalyst to solve this issue. In this work, the physical entrapment of the enzyme in cross-linked polyimidazolium bis(trifluorosulfonyl)imide based ionic liquid films has been studied. Photo-induced polymerisation has proved to be compatible synthesis conditions of the polymer with the enzyme. However, significant leaching has been measured using this immobilisation technique. Uncertainties remain on the origin of the leaching but morphological studies suggest that the size of the enzyme and the structure of the polymer were not compatible. These two parameters need to be modified in the future.