Grass biomethane surpasses the 60% greenhouse gas (GHG) savings relative to the fossil fuel replaced required by EU Directive 2009/28/EC. However, there are growing concerns that when the indirect effects of biofuels are taken into account, GHG savings may become negative. There has been no research to date into the indirect effects of grass biomethane; this paper aims to fill that knowledge gap. A causal\uffe2\uff80\uff90descriptive assessment is carried out and identifies the likely indirect effect of a grass biomethane industry in Ireland as a reduction in beef exports to the UK. Three main scenarios are then analyzed: an increase in indigenous UK beef production, an increase in beef imported to the UK from other countries (EU, New Zealand and Brazil), and a decrease in beef consumption leading to increased poultry consumption. The GHG emissions from each of these scenarios are determined and the resulting savings relative to fossil diesel vary between \uffe2\uff80\uff93636% and 102%. The significance of the findings is then discussed. It is the view of the authors that, while consideration of indirect effects is important, an Irish grass biomethane industry cannot be held accountable for the associated emissions. A global GHG accounting system is therefore proposed; however, the difficulty of implementing such a system is acknowledged, as is its probable ineffectualness. Such a system would not treat the source of the problem \uffe2\uff80\uff93 rising consumption. The authors conclude that the most effective method of combating the indirect effects of biofuels is a reduction in general consumption. \uffc2\uffa9 2011 Society of Chemical Industry and John Wiley & Sons, Ltd
", "keywords": ["/dk/atira/pure/subjectarea/asjc/2100/2105", "2. Zero hunger", "/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy", "Sustainability and the Environment", "330", "name=Bioengineering", "name=SDG 7 - Affordable and Clean Energy", "02 engineering and technology", "01 natural sciences", "7. Clean energy", "12. Responsible consumption", "13. Climate action", "name=Renewable Energy", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "/dk/atira/pure/subjectarea/asjc/1500/1502", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1002/bbb.276"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biofuels%2C%20Bioproducts%20and%20Biorefining", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/bbb.276", "name": "item", "description": "10.1002/bbb.276", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/bbb.276"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-28T00:00:00Z"}}, {"id": "10.1016/j.seta.2023.103071", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-30T16:17:23Z", "type": "Journal Article", "created": "2023-02-17", "title": "Voltage evolution and electrochemical behaviour of Soil microbial fuel cells operated in different quality soils", "description": "The desire for a net-zero carbon future is a key driver for innovation in renewable energy. Amongst several emerging solutions, soil microbial fuel cells (SMFCs) pose an interesting addition as a low-cost, carbon\u2013neutral technology. A full understanding on the electro-generative processes in SMFCs has, however, yet to be achieved, hindering the technology\u2019s translation into practical applications. In this study, an in-depth investigation into the evolution of the output voltage generated by membrane-less, flat-plate SMFCs that accounts for the contribution of both the anode and cathode potential is provided for the first time, along with a study of the influence that organic matter content and porosity in soil has on voltage dynamics. Four stages in voltage evolution over time were observed, which depended on soil properties. The content of organic matter had the greatest effect, leading to an output voltage nearly-three times higher, when it increased from 10 % to 50 %. In this case, the anode potential reached a value of \u2212450 mV, which prompted an exponential increase in the cathode potential and led to a power density of 68 mWm\u22122. The experimental findings were used to develop a novel computational model that, by predicting the electrochemical behaviour of the SMFC in different soils, becomes a powerful guide for operating strategies that can markedly enhance electricity generation. Consequently, this study sets the foundation for effective system optimisation and real applications.