Thermophilic and mesophilic anaerobic digestion of soybean molasses: A performance vs. stability trade-off.

One of the factors that has a direct impact on anaerobic digestion is the applied organic loading rate (OLR). Increasing OLR can boost methane production but can also cause process failure. As a result, establishing the appropriate OLR for the procedure is critical.

Optimization of the yield of dark microaerobic production of hydrogen from lactate by Rhodopseudomonas palustris.

Hydrogen yields of dark fermentation are limited due to the need to also produce reduced side products, and photofermentation, an alternative, is limited by the need for light. A relatively new strategy, dark microaerobic fermentation, could potentially overcome both these constraints. Here, application of this strategy demonstrated for the first time significant hydrogen production from lactate by a single organism in the dark.