Batch and continuous biogas production from grass silage liquor

Jehad Abu-Dahrieh, Angela Orozco, Elaine Groom, David Rooney

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Herein batch and continuous mesophilic anaerobic digestion of grass silage liquor was studied. The continuous process was carried out in Armfield digesters with an OLR ranging from 0.851 to 1.77 kg COD m-3 day-1. The effect of recirculation of effluent from the digester was investigated using different OLRs of grass silage liquor feed. These results showed that as the OLR increased, the methane yield decreased for the reactor with no recycle and increased for the reactor with recycle. However, the COD removal for both digesters was nearly the same at the same OLR. Overall these studies show that grass silage liquor can produce a high quality methane steam between 70% and 80% and achieve methane yields of 0.385 m3 kg-1 COD.
Original languageEnglish
Pages (from-to)10922-10928
Number of pages7
JournalBioresource Technology
Issue number23
Publication statusPublished - Dec 2011

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal


Dive into the research topics of 'Batch and continuous biogas production from grass silage liquor'. Together they form a unique fingerprint.

Cite this