Download Learnerz IAS app from the Play Store now! Download






  • Lignite often referred to as brown coal.

  • It is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. 

  • It has a carbon content around 40 to 55%, and is considered the lowest rank of coal due to its relatively low heat content. 

  • When removed from the ground, it contains a very high amount of moisture which partially explains its low carbon content. 

  • Lignite is mined all around the world and is used almost exclusively as a fuel for steam-electric power generation.

  • The combustion for lignite produces less heat for the amount of carbon dioxide and sulfur released than other ranks of coal. 

  • As a result lignite is the most harmful coal to human health.

  • Depending on the source, various toxic heavy metals, including naturally occurring radioactive materials, may be present in lignite which are left over in the coal fly ash produced from its combustion, further increasing health risks.

  • The energy content of lignite ranges from 10 to 20 MJ/kg on a moist, mineral-matter-free basis.

  • Lignite has a high content of volatile matter which makes it easier to convert into gas and liquid petroleum products than higher-ranking coals. 

  • Unfortunately, its high moisture content and susceptibility to spontaneous combustion can cause problems in transportation and storage.

  • Processes which remove water from brown coal reduce the risk of spontaneous combustion.

  • However, removing the moisture increases the cost of the final lignite fuel.

Lignite rapidly degrades when exposed to air. This process is called slacking or



Amritsar,1,April 2024,301,Art & Culture,1,August 2023,251,Courses,7,Daily Current Affairs,48,December 2023,189,Disaster Management,2,Environment and Ecology,54,February 2024,228,Foundation Course,1,GDP,1,GEMS Club,1,GEMS Plus,1,Geography,67,Govt Schemes,2,GST,1,History,2,Home,3,IAS Booklist,1,Important News,71,Indian Economy,46,Indian History,2,Indian Polity,56,International Organisation,12,International Relations,58,Invasive Plant,1,January 2024,240,July 2023,281,June 2022,6,June 2023,268,March 2024,238,May 2022,17,May 2024,213,Mentorship,2,November 2023,169,October 2023,203,Places in News,2,Science & Technology,66,September 2023,205,UPSC CSE,111,
Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Lignite UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy Table of Content