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Exploring the effects of different biopolymer and porous membrane support types in gas-liquid membrane contactor for CO2 capture

Chantry, Thomas
(2022)

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Chantry_20311500_2022.pdf
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Details

Supervisors
Luis Alconero, Patricia
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingénieur civil en chimie et science des matériaux, à finalité spécialisée
Abstract
The CO2 capture from the industry remains a major challenge to counter the climate change. The gas-liquid membrane contactor offers a promising alternative to the conventional techniques. However, the major problems of membrane contactors are energy-intensive solvent regeneration and membrane wetting. In this master thesis, polypropylene (PP) membranes will be studied as a possible alternative to polyvinylidene fluoride (PVDF). A coating strategy for the hydrophobic PP membranes will be first investigated. The results will be compared with PVDF membranes. The influence of the biopolymer will be studied. Two different biopolymers are chosen: chitosan (CS) and sodium alginate (SA). Afterwards, there will be some parameter optimization realized on a PVDF membrane. PP membranes will be successfully coated with a polydopamine (PDA) coating strategy. The biopolymer of interest is the SA that shows good properties for further enhancements. PP membrane still remains difficult to coat and is therefore less efficient than PVDF membrane. The parameter will be further optimized and this will be done with PVDF experiments with results reaching 4.2E-3 [m3/m2 min] which is an enhancement of 125% to a non-coated PP membrane. Membrane storage stability will also show good results with a controlled decrease when the membrane is correctly stored.