Investigating the activity of indigenous microbial communities from Italian depleted gas reservoirs and their possible impact on underground hydrogen storage
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View abstract on PubMed
Summary
This summary is machine-generated.Storing hydrogen (H2) underground requires understanding microbial activity. This study found acidogenic/acetogenic activity predominates, influenced by nutrients, crucial for safe hydrogen storage.
Area Of Science
- Geosciences
- Microbiology
- Energy Storage
Background
- Hydrogen (H2) is vital for decarbonization and requires large-scale storage.
- Underground hydrogen storage (UHS) faces challenges from indigenous microbial populations.
- Previous work characterized Italian natural gas reservoirs for UHS potential.
Purpose Of The Study
- To characterize microbial activity in formation waters for UHS.
- To assess the impact of microbial activity on different gas mixtures.
- To inform computational models for predicting microbial behavior during UHS.
Main Methods
- Batch cultivation tests using formation waters as inoculants.
- Analysis of microbial activity (acidogenic, acetogenic, methanogenic, sulfate-reducing).
- Evaluation of nutrient availability's influence on microbial activation.
- Fitting results into a computational model.
Main Results
- Predominant acidogenic and acetogenic microbial activity observed.
- Marginal methanogenic and sulfate-reducing activity across all samples.
- Microbial activation is significantly influenced by nutrient availability.
- Computational model developed based on experimental data.
Conclusions
- Microbial communities in studied reservoirs exhibit specific metabolic activities relevant to UHS.
- Nutrient availability is a key factor controlling microbial behavior in UHS.
- The developed model aids in understanding and predicting microbial impacts on hydrogen storage.
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