Suggested Reads

Microwave assisted hydrothermal treatment enables bioenergy recovery from digestate.

Digestates require lower temperatures for carbonization compared to raw grass silage.

Hydrochar properties significantly change as temperature increases beyond 160 °C.

Digestate from untreated grass silage produces hydrochar of high quality.

Graphene enhanced mesophilic and thermophilic anaerobic digestion (MAD, TAD) by ∼25%.

Potential direct interspecies electron transfer (DIET) was established via graphene.

DIET fluxes in MAD and TAD were at similar level.

Diverse temperature-dependent bacteria and archaea might participate in DIET.

Increasing the slurry to grass ratio improves sustainability of biogas.

Power to gas (P2G) can be used to upgrade biogas to biomethane.

The carbon intensity of hydrogen is higher than the electricity it is produced from.

P2G systems using the Irish electricity mix reduce sustainability of biomethane.

Renewable electricity levels of 85% allow biomethane be sustainable.