Coal characterization for carbon dioxide sequestration purposes

The greenhouse gas effect helps to regulate the temperature of our planet. It is the result of heat adsorption by a number of gases in the atmosphere called greenhouse gases because they effectively ‘trap’ heat in the lower atmosphere. Water vapour is the most abundant greenhouse gas, followed by carbon dioxide and methane. Without a natural greenhouse gas effect, the temperature of the Earth would be about –18°C instead of its present 14°C [1]. So, the concern is not with the fact that there is a greenhouse gas effect, but whether human activities are leading to an enhancement of this effect. Reduction in CO2 emissions is the most quoted solution for global warming in the short time. At the third Conference of Parties of the Framework Convention on Climate Change (FCCC) in Kyoto (1997), developed countries agreed to stabilise emissions of greenhouse gases through a 5.2% reduction from 1990 levels by 2008-12. In order to stabilise atmospheric carbon dioxide concentrations it will be necessary to reach more than 60% reduction by 2050 [2].