Friday 3 July 2009

Bubble and Squeak - Methane a new energy source?


With the constant pressure to find alternative energy sources to reduce reliance on environmentally damaging coal fired generators and other fossil fuels, attention has turned to the high concentrations of methane which are found in various countries. In particular methane clathrate has become a favoured possible alternative energy source. Methane clathrate consists of molecules of methane trapped within ice crystals. With an appearance similar to dirty ice and a sorbet-like consistency, the application of heat rapidly ignites methane clathrates which omit about half as much carbon dioxide as burning coal.

Large deposits of methane clathrates can be found throughout the world in Central America, Japan, India, Alaska and Siberia both in permafrost and under the Ocean. The technology for extracting this energy source is still experimental and with methane clathrates lodged in fragile ice crystals, the safety and economic viability is in question. Also the methane molecule is twenty times as powerful as CO2 in warming the air. With rising sea temperatures, it would take little to release ocean clathrate reserves into the atmosphere.

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