This paper presents modelling based on 340days of operation of a small pilot-scale, 2-stage completely-mixed digester, loaded gradually up to an organic loading rate of 2.5kgm−3d−1. The reactor suffered mechanical failure in the agitation system due to high solids content in the digester....

This paper considers biodiesel production from residues; tallow and used cooking oil (UCO). The tallow system is more complex involving two processes. The first process is rendering in which tallow (animal fat) and Meat and Bone Meal (MBM) are produced from the slaughter of cattle. MBM is...

Ireland is heavily dependent on imported transport fuel. The bill in 2008 was €5.9 billion. Because of the significant resources in organic residues and feedstocks there is readily available potential to substitute 8.4% of oil with indigenously produced biomethane, a renewable gaseous...

Biomethane is an indigenously produced gaseous sustainable transport fuel that uses organic feedstock. Allowing for a realistic collection of organic residues and grass silage from 2.5% of pasture land would allow Ireland to generate 17% renewable energy supply in transport (RES-T) and surpass...

The proposed EU Directive on the promotion of Renewable Energy stipulates that only biofuels that achieve greenhouse emissions savings of 35% will be eligible for inclusion with respect to meeting the 2020 target of 10% for the share of biofuels. This paper examines biodiesel for use in Ireland,...