Kansai Electric succeeds in injecting
large amount of CO2 into coal beds
Jan 28, 2008 - McClatchy-Tribune
Regional News - Kyodo News International - Tokyo
Kansai Electric Power Co. said Monday
it has succeeded in an experiment to inject a large
amount of carbon dioxide into deep coal beds by using
nitrogen for the first time in the world.
The technology is able to fix some
6.6 tons of CO2 in coal beds per day, the same amount
as absorbed by 900,000 cedar trees a day, the company
Without the use of nitrogen, which prevents
each coal bed from swelling and thus reducing the
room for absorbing the greenhouse gas, the amount
absorbed drops by half.
In addition, the technology enhances
the recovery of coal-bed methane.
General Environmental Technos Co., a
Kansai Electric subsidiary, has been testing the technology
in Yubari, Hokkaido, since 2004 in a project promoted
by the Ministry of Economy, Trade and Industry.
The technology would be "promising"
if it is put to practical use, Kansai Electric President
Shosuke Mori said.