Waste-biogas is at least ten times more effective than crop-biogas at reducing greenhouse gas emissions
Thursday, February 26, 2015 - 09:30
in Earth & Climate
In a paper just released in the leading bioenergy journal Global Change Biology Bioenergy, researchers from Bangor University and the Thünen Institute in Germany conclude that crop-biogas and liquid biofuels are at best inefficient options for greenhouse gas (GHG) mitigation, per hectare of land used and per £ public subsidy required. At worst these options could actually lead to higher global GHG emissions owing to indirect land use change caused by displacement of food production. In comparison, waste-biogas and Miscanthus (woody grass) heating pellets achieve at least ten times more GHG mitigation per tonne of dry matter biomass and per hectare of land used, respectively, leading to cost-effective GHG mitigation.