Doctoral student in Microbiome-based strategies to reduce nitrous oxide emissions from municipal wastewater treatment Chalmers University of Technology in Sweden

Chalmers University of Technology invites applications for a fully funded doctoral student position in Microbiome-based strategies to reduce nitrous oxide emissions from municipal wastewater treatment. This opportunity is based in the Water Quality and Resource Engineering research area within the Department of Architecture and Civil Engineering, located in Gothenburg, Sweden.

The department addresses contemporary challenges in the built and natural environment, including resource utilization, pollution, climate change, and digitalization. The Water Environment Technology division focuses on developing methods and technologies to analyze, treat, and manage water quality, emphasizing microbial ecosystems, organic matter, and advanced monitoring technologies. The overarching goal is circular resource use and protection of both the environment and human health.

The research project aims to mitigate nitrous oxide (N2O) emissions—a potent greenhouse gas—produced during microbial nitrogen removal in wastewater treatment. The doctoral student will investigate the composition, activity, and emission patterns of microbial communities in full-scale wastewater treatment processes and laboratory experiments. Mechanistic and data-driven modeling will be used to refine emission predictions and propose mitigation strategies.

Key responsibilities include:

• Applying molecular biology techniques to study microbial communities in wastewater treatment plants and their relation to N2O emissions.
• Conducting kinetic and microbial community studies in lab-scale reactors to identify critical factors influencing N2O emissions from activated sludge and biofilm.
• Using mechanistic and data-driven modeling to predict emission patterns.
• Participating in advanced-level coursework, workshops, and conferences to broaden disciplinary knowledge.
• Developing scientific concepts and communicating research results verbally and in writing.
• Assisting in teaching at undergraduate and graduate levels (up to 20% of working hours).

The position is fully funded from the start, with a starting salary of 35,725 SEK per month (valid from May 1, 2026). The appointment is fixed-term for four years, with the possibility to extend to five years if teaching duties are undertaken. Doctoral students at Chalmers are employees and enjoy comprehensive benefits, including access to Sweden’s generous parental leave, subsidized day care, free schools, and healthcare. Chalmers actively promotes gender balance and offers Swedish language courses for international students.

Eligibility requirements include a Master’s degree (masterexamen) of 120 credits or a Master’s degree (magisterexamen) of 60 credits in Environmental Engineering, Applied Biotechnology, or a related discipline. For applicants educated outside Sweden, a 4-year Bachelor’s degree is accepted. Strong written and verbal communication skills in English and competence in wastewater treatment biotechnology are mandatory. Experience in molecular biology techniques (such as metagenomics), bioinformatics, bioprocess modeling, laboratory reactor setup, and chemical measuring techniques relevant to water treatment are advantageous. Physical presence throughout the study period and a valid residence permit are required.

To apply, submit your application in English as PDF files via the online application form. Required documents include your CV, personal letter, motivation, and thesis with transcripts. Incomplete applications and those sent by email will not be considered. References will be requested after the interview. The application deadline is August 10, 2026.

For further information, contact Associate Professor Frank Persson at [email protected].

Chalmers University of Technology is renowned for its research and education in technology and natural sciences, fostering innovation and sustainability in close collaboration with society.