MSE Research Project Database

Carbon dioxide capture technologies


Project Leader: Kathryn Mumford
Collaborators: Yue Wu
Primary Contact: Kathryn Mumford (mumfordk@unimelb.edu.au)
Keywords: carbon dioxide separation
Disciplines: Chemical & Biomolecular Engineering
Domains:

Phase induced solvents have been gaining momentum for CO2 absorption due to their large CO2 absorption capacity and relatively low regeneration energy requirement. This project investigates different ways to induce CO2-rich solvent phase via temperature swing or adding different anti-solvents. Research activities involve thermodynamic properties of the solvent system, the evaluation of precipitating kinetics amd process model development. A typical example in this project is to use amino acid promoted concentrated potassium carbonate solvent. Based on this novel solvent system, an electrolyte non-random two liquid (ENRTL) thermodynamic model is regressed through Data Regression System (DRS) in Aspen Plus®. The precipitation kinetics of the solvent system including primary nucleation, secondary nucleation and crystal growth is comprehensively studied in a batch cooling crystallizer using a Focused Beam Reflectance Measurement (FBRM®) probe, and precipitating kinetic models are developed using MATLAB. Moreover, a process model using the novel solvent is developed in Aspen Custom Modeller to enable large scale system design.