A review on the bioenergetics of anaerobic microbial metabolism close to the thermodynamic limits and its implications for digestion applications

摘要

Highlights?Functional microorganisms and syntroph partners in anaerobic digestion.?Kinetic parameters of propionate degradation to methane and microbial growth.?Thermodynamics of propionate degradation and the reversibility of acetate oxidation.?Metabolic pathways and energy conservation of syntrophs in anaerobic digestion.?Pathways of mediated and direct interspecies electron transfer.AbstractThe exploration of the energetics of anaerobic digestion systems can reveal how microorganisms cooperate efficiently for cell growth and methane production, especially under low-substrate conditions. The establishment of a thermodynamically interdependent partnership, called anaerobic syntrophy, allows unfavorable reactions to proceed. Interspecies electron transfer and the concentrations of electron carriers are crucial for