Albert-Ludwigs-Universität Freiburguni-freiburg.de
3-year PhD position (m/f/d): Sulfur Cycling in Wetlands and its Coupling to Iron and Carbon
- Standort
- Freiburg im Breisgau
- Remote
- Vor Ort
- Anstellungsart
- Vollzeit
- Erfahrung
- Junior
- Bereich
- Forschung & Wissenschaft
- Bewerbungsfrist
- 20.09.2026
Heute
The Applied Geochemistry group at the Institute of Earth and Environmental Sciences, University of Freiburg (Germany) is offering a 3-year PhD position (m/f/d): Sulfur Cycling in Wetlands and its Coupling to Iron and Carbon
- Bewerbungsfrist: 20. September 2026
- Veröffentlichungsdatum: 14. August 2026
- Eintrittstermin: 1. November 2026
- Arbeitsumfang: Part-time position (70 %)
- Kennziffer: 00005154
Beschreibung
Sulfur cycling is a fascinating but still surprisingly understudied part of wetland biogeochemistry. In oxygen-limited environments such as peatlands, the Wadden Sea, and other wetlands, sulfate can be rapidly transformed into sulfide. Sulfide, in turn, reacts strongly with iron minerals and can promote the dissolution of Fe(III) oxides, setting off a cascade of reactions that influence both iron and carbon cycling.
Despite its importance, many aspects of sulfur cycling in terrestrial wetlands remain poorly understood. One reason is that sulfur compounds are unstable, making them difficult to capture with conventional analytical methods.
This PhD project will investigate sulfur redox transformations in wetlands and their links to iron and carbon cycling. The project combines experimental work with analytical method development to characterize different sulfur species using techniques such as HPLC and LC-ICP-MS. The project also offers the opportunity for fieldwork in the Black Forest, where the PhD candidate will investigate sulfur pools and transformations in minerotrophic peatlands.
Tasks and responsibilities
- Design and conduct laboratory experiments
- Apply and develop analytical methods for sulfur speciation
- Acquire and analyze synchrotron-based research data
- Identify suitable field sites in the Black Forest and establish contact with landowners and relevant authorities
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