Production of Advanced Gaseous Biomethane transport fuel in an integrated circular bioenergy system

In Ireland, approximately 40% of total energy consumption is associated with transport (mainly fueled by petrol and diesel); this has contributed to significant greenhouse gas emissions and impacted negatively on urban air quality. Compared to electricity and heat, transport is the least decarbonized sector in Ireland. Ireland has a target to achieve 10% renewable transport by 2020, but the technological strategy is not certain as yet. Anaerobic digestion (AD) is a viable technology to produce biogas (60% biomethane and 40% carbon dioxide), whilst treating wastes and residues; In an Irish context grass silage is an excellent source of biogas. Integrating power to gas (P2G) with AD offers an innovative means to upgrade biogas to green gas (97% biomethane), whilst supporting intermittent renewable electricity and producing advanced renewable transport fuel. This proposal will evaluate a future integrated bioenergy system, including the concepts of cascading bioenergy and circular bioeconomy. The system will produce advanced gaseous transport biomethane from a wide array of second and third generation biomass (such as grass silage, food waste, and seaweed).


1. Lin, R.C., C. Deng, L.K. Ding, A. Bose, and J.D. Murphy, Improving gaseous biofuel production from seaweed Saccharina latissima: The effect of hydrothermal pretreatment on energy efficiency. Energy Conversion and Management, 2019. 196: p. 1385-1394.

2. Deng, C., R.C. Lin, J. Cheng, and J.D. Murphy, Can acid pre-treatment enhance biohydrogen and biomethane production from grass silage in single-stage and two-stage fermentation processes? Energy Conversion and Management, 2019. 195: p. 738-747.

Production of Advanced BioFuels Project Factsheet

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Funded By

Environmental Protection Agency Ireland (EPA) (€ 340k)


Benteng Wu, Dr Richen Lin, Prof Alan Dobson, Prof Jerry D Murphy


Circular Economy, Climate Action



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