Coalbed methane (CBM)

Posted on : 07 Dec 2019

• Coalbed methane, coalbed gas, coal seam gas or coal-mine methane is a form of natural gas extracted from coal beds.
• In recent decades it has become an important source of energy in United States, Canada, Australia, and other countries.
• The term refers to methane adsorbed into the solid matrix of the coal. It is called 'sweet gas' because of its lack of hydrogen sulphide.
• The presence of this gas is well known from its occurrence in underground coal mining, where it presents a serious safety risk.
• India has fifth-largest proven coal reserves in the world. So it has significant prospects for exploiting CBM.
• CBM is an environmentally safe gas.

Where is coalbed methane found?

• Coalbed methane is associated with coal deposits, and is found in coal seams.
• In the past, the gas was the cause of numerous explosions in underground mines. More recently, the gas has been vented to the surface from underground mines.
• Various basins in the Rocky Mountains hold much of this country's coalbed methane resources.

Article Related Questions

1. Consider the following statements regarding “Coalbed methane (CBM)”
   1.It is also called 'sweet gas'.
   2.India has fifth-largest proven coal reserves in the world.
   3.It is not an environmentally safe gas.
   Which of the following statement is/are correct?

1.1 and 2 only

2.1 and 3 only

3.2 and 3 only

4.1, 2 and 3

Right Ans : 1 and 2 only

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2. The 1857 Uprising was the culmination of the recurrent big and small local rebellions that occured in the preceding hundred years of British Rule. Elucidate (Answer in 150 words) - 2019 Mains

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