The environmental community rightly recognizes global warming as one of the gravest threats to the planet. Methane (CH4), one of the greenhouse gases causing global warming, is emitted from a variety of sources and its concentration in atmosphere has increased dramatically over the last few...

Underground coal mines emitting large quantities of methane to atmosphere is one of the sources of methane. Approximately 70% of the methane emitted from coal mines is released as the ventilation air methane (VAM). Unfortunately, due to the low methane concentration (0.1-1.5%) in ventilation...

CO2 emissions in the atmosphere are increasing continually, which are mainly originated from burning of fossil fuels. The fossil fuels are expected to remain a major component of the world's energy supply in the near future, because of their inherent advantages. Therefore, various measures have...