Large-scale, long-distance transports of biofuels from central Sweden to central Europe may be a cost-effective and attractive way to reduce CO2 emissions. This is confirmed by comparative analyses of costs, primary energy use, and CO2 emissions performed for various forest fuel systems. The findings show that a system of lashed branches and tops from harvested forests evinces good cost-effectiveness. It also has a high potential to reduce the net emissions of CO2 per hectare of forest.
"A large number of systems were compared in terms of terrain, concentration of forest fuel, and transport distance. If the preconditions are changed, then the potential for the various forest fuel systems changes as well," says Lisa Eriksson at Mid Sweden University. These systems were compared on a local, national, and international scale.
A lashed system means that more biomass per hectare can be delivered to end users than with a pellet system. This is due to the consumption of biomass in the production of pellets. The amount of material gathered per hectare is a central factor. Extracting brush from thinning together with stumps, branches, and tops from harvesting yields a high potential to avoid fossil CO2 emissions per hectare of forest. The total amount of available forest fuel in Sweden has been estimated at roughly 66 TWh per year.
Lisa Eriksson will publicly defend her thesis at the Department of Engineering, Physics, and Mathematics at Mid Sweden University, Östersund Campus. The subject is Eco-technology and Environmental Science and the title of the dissertation is Forest Fuel Systems-Comparative Analyses in a Life Cycle Perspective.Questions can be posed to:
Mass spectrometry sheds new light on thallium poisoning cold case
14.12.2018 | University of Maryland
Protein involved in nematode stress response identified
14.12.2018 | University of Illinois College of Agricultural, Consumer and Environmental Sciences
What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...
A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.
The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...
A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.
Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...
Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...
What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.
Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...
12.12.2018 | Event News
10.12.2018 | Event News
06.12.2018 | Event News
14.12.2018 | Physics and Astronomy
14.12.2018 | Health and Medicine
14.12.2018 | Life Sciences