Microbiological insight into various underground gas storages in Vienna Basin focusing on methanogenic Archaea

Underground gas storage (UGS) has historically served in the past as storage for natural gas or town gas. In recent years, there has been an idea to extend their potential to the hydrogen and carbon dioxide storage. Hydrogen storage could lead to microbial reactions in the UGS and conversion to methane. From this point of view, it is important to know the composition of microbial communities in any UGS planned for hydrogen storage and their viability. In this work, underground water samples and water samples from surface technologies from 7 UGS objects located in the Vienna Basin were studied using both molecular biology methods and cultivation methods.