Worm gas concerns
In these environmentally aware days, an Open University researcher has come up with some environmental news that has people listening. The reason for the attention is that it seems to clash with the green agenda because Jim Frederickson, a senior research fellow at The Open University's Faculty of Technology, found that worms may not be as environmentally friendly as many think.
Research shows that as worms munch through our kitchen scraps on the way to making compost for us, they give off nitrous oxide. It’s not as famous as carbon dioxide in environmental concerns, but it is 296 times more powerful than CO2.
Frederickson, says: "We know from research in Germany that a third of the nitrous oxide emissions coming from the soil are associated with worms.
"What we found from looking at large worm composting systems is that their emissions could be comparable in global warming potential to the methane from landfill sites.
"The amount of worm composting is very, very small and the amount of landfill is huge. But landfill sites are quite well run these days and it is possible to extract about half the gas they generate and use it for electricity generation.
The research done at The Open University by Jim Frederickson and his colleagues was on large commercial worm composting beds where worms can emit much of the nitrogen in waste as damaging gas.