The physical chemistry of reaction-diffusion processes for aqueous electrolytes in contact with mineral surfaces underlies various dissolution/precipitation reactions in nature and technology. A prominent example is the dissolution of olivine leading to the precipitation of magnesite. To better understand and eventually control these processes, we are setting up a research program to elucidate the complexity arising from the coupling of bulk and interfacial reactions. We are looking for a postdoc who wants to contribute to this program by designing and executing experiments (optical visualization and spectroscopies: Raman, IR, fluorescence; AFM; microfluidics) and/or by (numerically) modeling coupled chemical speciation and transport problems. Physical and chemical intuition will be essential to identify the dominant processes.
An example process is the capture of CO2 and chemical conversion to thermodynamically stable mineral carbonates, which is emerging as a viable negative emission technology. Using earth-abundant olivine rock as a source of Mg2+ ions, subsequent reaction with carbonate ions leads to thermodynamically stable magnesite. This reaction is already being applied but under ambient temperature and pressure conditions it is rather slow. The rate-limiting process of olivine dissolution is not only determined by aqueous solubility but also by concentration gradients, which in turn are influenced by surface alteration layers and local flow conditions.
Information and application
Applicants should provide:
- A tailored motivational letter (max. 1 page)
- A Curriculum Vitae
- Names of persons to contact for references
An interview with a scientific presentation will be part of the process.
For more information about the position, you are encouraged to contact dr. M.H.G. Duits, firstname.lastname@example.org
Please apply before 01-12-2022 via the button below.
About the department
In the Physics of Complex Fluids (PCF) group at the University of Twente (Enschede, The Netherlands), research is aimed at understanding behaviours of multicomponent fluids near interfaces.
About the organization
The Faculty of Science & Technology (Technische Natuurwetenschappen, TNW) engages some 700 staff members and 2000 students in education and research on the cutting edge of chemical technology, applied physics and biomedical technology. Our fields of application include sustainable energy, process technology and materials science, nanotechnology and technical medicine. As part of a people-first tech university that aims to shape society, individuals and connections, our faculty works together intensively with industrial partners and researchers in the Netherlands and abroad, and conducts extensive research for external commissioning parties and funders. Our research has a high profile both in the Netherlands and internationally and is strengthened by the many young researchers working on innovative projects with as doctoral candidates and post-docs. It has been accommodated in three multidisciplinary UT research institutes: Mesa+ Institute, TechMed Centre and Digital Society Institute.