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Optimizing biogas production

PhD defence, Monday, 4 July 2022. Cristiane Romio.

Cristiane Romio

During her PhD studies, Cristiane Romio researched the residual biogas potential of digestate, the effluent material of biogas plants, to improve the sustainability and economy of biogas plants. Anaerobic digestion is an appealing technology to produce a renewable energy carrier, biogas, contributing to the achievement of the independence from fossil fuels to contend global warming. The economy of biogas plants and their sustainable operation depend on the effective substrate utilization and consequent low residual biogas yield in the digestate and reduced risks of methane emissions during digestate storage. Cristiane determined the residual biogas potential of digestate from operational biogas plants and evaluated technologies to maximize or accelerate its recovery, such as post-treatment methods like ultrasonication, electrokinetic disintegration, and alkaline treatment.

The PhD study was completed at the Department of Biological and Chemical Engineering, Faculty of Technical Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Monday, 4 July 2022 at 13:00
Place: Building 8814, room 3075, Lecture Theatre, Foulum, Aarhus University, Blichers Allé, 8830 Tjele.
Title of PhD thesis: Optimization of anaerobic digestion by new digestate post-treatment strategies for additional biogas recovery

Contact information: Cristiane Romio, e-mail: ane.romio@bce.au.dk, tel.: +45 52819877

Members of the assessment committee:

Senior Researcher Hélène Carrere, Laboratory of Environmental Biotechnology, INRAE, France

Associate Professor Jens Bo Holm-Nielsen, Department of Energy Technology, Aalborg University, Denmark

Associate Professor Clarissa Schwab (chair), Department of Biological and Chemical Engineering, Aarhus University, Denmark

Main supervisor:
Senior Researcher Henrik Bjarne Møller, Department of Biological and Chemical Engineering, Aarhus University, Denmark

Co-supervisor:
Associate Professor Michael Vedel Wegener Kofoed, Department of Biological and Chemical Engineering, Aarhus University, Denmark

Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Technical Sciences/GSTS,

Jens Baggesens Vej 53, building 5221, second floor, 8200 Aarhus N.

17427 / i43