Tag: coal, petroleum and petrochemicals

Peat found in the lowest depth of earth considering the other forms of coal.It also has the lowest percentage of carbon as compared to other forms.In other words, we can say that they are the youngest fossils.

Percentage of carbon present in an air dried sample of anthracite is 94-98%.

Bituminous or black coal is a soft coal containing a tarlike substance called bitumen. It is of higher quality than lignite coal and has low ash content so it is used as coal fuel in homes.

The order of carbon content is as follows:

Peat is a fuel consisting of spongy material formed by the partial decomposition of organic matter in wetlands such as swamps, bogs, and moors. Peat contains tree cellulose, more than $75$% moisture and less than $60$% carbon.

Coal is mainly found in beds of sedimentary rocks. But metamorphic rocks might sometime contain anthracite coal. But sedimentary rocks is the most important source of coal.

Other than Carbon (the main constituent), all the above mentioned elements are also present in coal.

Coal is available in four forms: Lignite, bituminous, anthracite and sub- bituminous. Anthracite is the highest ranked coal with the carbon percentage of above 87%. The carbon conten in lignite is 60-70%.  Tamil nadu is the largest producer of lignite coal.

Coal is available in 4 forms: Lignite, bituminous, anthracite and sub-bituminous. Anthracite is the highest ranked coal with the carbon percentage of above 87%. The carbon content in bituminous is 77-87%, in sub-bituminous is 71-77% and in lignite is 60-70%.  Lignite has the least carbon content and hence highest ash content.

• Peat has the carbon content of about 
• Anthracite has the carbon content of above 87%.