Methanogenesis
Anaerobic digestion
Acetogenesis
Bacteria
Archaea
Firmicutes
Acidogenesis
Methanosarcina
Biology
Food science
Fermentation
Sewage sludge
Microbiology
Population
Euryarchaeota
Chemistry
Sewage
Methane
Ecology
Environmental engineering
16S ribosomal RNA
Environmental science
Genetics
Demography
Sociology