Christmas trees could make a great green fuel | ximike2089's Blog

Once the tinsel and baubles have been removed, many of our Christmas trees end up in the trash. Soon they could be put to better use, however: a special roasting process Asics Shoes could make it economically viable for power stations to burn large quantities of biomass, such as pine and spruce trees, instead of coal.

Compared with fossil fuels, biomass can provide a carbon-neutral form of energy. Many coal-fired power stations Gucci outlet already burn biomass, but only small amounts can be used because of the difficulty and expense of pulverising wood to a powder that can be burned alongside processed coal dust.

To overcome this problem, Jenny Jones at the University Gucci outlet online of Leeds, UK, and colleagues have been experimenting with "torrefaction" – a roasting process where plant matter is heated in an air-free container.

Torrefaction is already used to produce Gucci sunglasses biochar – a processed form of plant material used to improve soils and avoid carbon dioxide emissions that would have resulted had the plants been allowed to decompose. Jones and her colleagues discovered that a different roasting recipe can make biomass suitable to burn alongside coal.

Working with willow and also with Miscanthus grass, the team found that both types of plant matter had to be heated to around 300 °C, though the cooking time depended on the diameter of Gucci shoes the branches. During this process the plant material lost a small fraction of their mass but retained almost all of their capacity to generate heat when burned – their energy yield was about 75 per cent that of coal Gucci men boots.

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