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PhD High resolution AFM visualization of adsorption and desorption reactions at calcite-electrolyte and calcite-oil interfaces

At the University of Twente (the Netherlands) within the MESA+ institute for nanotechnology a research program will start early 2018, aimed at understanding physico-chemical aspects of Enhanced Oil Recovery (EOR) using low-salinity water-flooding in Carbonate ...

6 maanden geleden

Arbeidsvoorwaarden

Standplaats:
Drienerlolaan, Enschede, Overijssel
Dienstverband:
Tijdelijk contract / Tijdelijke opdracht
Uren per week:
38 - 38 uur
Salarisindicatie:
€ 2222 - € 2840 per maand
Opleidingsniveau:
WO

Functieomschrijving

At the University of Twente (the Netherlands) within the MESA+ institute for nanotechnology a research program will start early 2018, aimed at understanding physico-chemical aspects of Enhanced Oil Recovery (EOR) using low-salinity water-flooding in Carbonate reservoirs. The research will be done in consultation with an industrial partner, and involves 5 temporary researchers in Twente.

Goal of this project is to obtain and use AFM molecular resolution imaging data to enable a better understanding and identification of mechanism of adsorption/desorption processes of ions and polar organic molecules on carbonate surfaces. Particular attention will be devoted to solve the true atomic structure of idealized model surfaces (calcite) and the natural calcium carbonates surfaces in variable electrolyte compositions, identification of precise adsorption sites of ions (specifically SO_4^(2-) and Mg^(2+)), lateral variations in ion adsorption (e.g. due to steps, defects) or CaCO3 crystallites polymorphs. The experiments will primarily be carried out at room temperature and then extended to elevated temperatures up to 70°C. High temperature generally shifts the location of chemical equilibria and may therefore promote the adsorption/desorption of ions and hydrophobizing organic species. The second phase of this project will be devoted to high resolution imaging and 3D-interaction force mapping in ambient oil. First goal of this subproject is to identify the relevant interaction forces and the attraction of polar oil components to the solid surface in ambient oil. A second goal of these experiments is to identify whether thin water layers are present on the solid surface if the oil phase is saturated with water. If present, these films might also play an important role in the adsorption and binding of organic material to the rock.

Functie-eisen

For this position we are searching for an ambitious candidate with an MSc or MEng degree in (physical or crystal) chemistry or (experimental) physics. Existing knowledge on crystal growth, adsorption phenomena or wetting will be considered as an advantage. Considering the strongly collaborative nature of the project, we are looking for a team player with good communication skills.

Information and application
Further information can be found on the website: www.utwente.nl/tnw/pcf or by contacting Prof. Frieder Mugele, (f.mugele@utwente.nl), Dr. Igor Sîretanu (i.siretanu@utwente.nl) or Dr. Michel Duits, (m.h.g.duits@utwente.nl).

Applications are welcome till March 15, 2018 and should include a specific motivation letter reflecting on the goal and challenges of the advertised project in relation to the interests and skills of the candidate as well as a detailed CV.

Arbeidsvoorwaarden

We offer a very challenging fulltime position in an inspiring multidisciplinary and international environment. The university offers a dynamic ecosystem with enthusiastic colleagues in which internationalization is an important part of the strategic agenda.

  • The gross monthly salary starts with € 2222,- in the first year and increases to € 2840,- in the fourth year of your employment;
  • A holiday allowance of 8% of the gross annual salary and a year-end bonus of 8.3%;
  • A solid pension scheme;
  • Minimum of 29 holidays in case of full-time employment;
  • Professional and personal development programs.

Bedrijfsomschrijving

The University of Twente. We stand for life sciences and technology. High tech and human touch. Education and research that matter. New technology which leads change, innovation and progress in society. The University of Twente is the only campus university of the Netherlands; divided over five faculties we provide more than fifty educational programmes. We have a strong focus on personal development and talented researchers are given scope for carrying out groundbreaking research.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status or disability status. Because of our diversity values we do particularly support women to apply.

Within the TNW Faculty (Faculty of Science & Technology) of the University of Twente some 700 staff members and 2000 students are involved in training and research on the interface of chemical technology, applied physics and biomedical technology. Fields of application include sustainable energy, process technology and materials science, nanotechnology and technical medicine. Research, which enjoys a high profile both at home and internationally, has been accommodated in the multidisciplinary research institutes MESA+ and MIRA. The faculty works together intensively with industrial partners and researchers in the Netherlands and abroad and conducts extensive research for external commissioning parties and funders.