CO2 revalorization using a distillation-crystallisation membrane: A NaHCO3 crystallization study

Details

Supervisors

Luis Alconero, Patricia ; Sparenberg, Marie-Charlotte

Faculty

Ecole polytechnique de Louvain

Degree label

Master [120] : ingénieur civil en chimie et science des matériaux, à finalité spécialisée

Abstract

Carbon dioxide revalorization is nowadays an important topic because it can help to find solutions to reduce greenhouse gas emissions, which are major contributors to climate change. Indeed, carbon dioxide is the most significant of these gas due to human activities such as the burning of fossil fuels for energy production or transportation and, consequently, is the primary source of the global warming. It is therefore necessary to find a way to reduce carbon dioxide emissions. A current way to do so is to use an absorption column where carbon dioxide is absorbed into a liquid, often water. This solution does not require a large amount of energy however, the absorbent must be cleaned afterwards and the remaining products have to be stored. This is why carbon dioxide revalorization is even more important in order to find a second life for these products. One of these is the sodium bicarbonate. Sodium bicarbonate can easily be crystallized and its crystals may find numerous applications, for example in cement or plaster production. In this thesis, the crystallization of sodium bicarbonate thanks to a distillation-crystallization membrane using different parameters will be discussed, and their impacts on the process and the produced crystals will be analyzed.