The research on vegetation analysis in the post-coal mining land of PT.Bukit Asam aims to find out the composition of vegetation and which plants grow in the Air Laya Mine IUPs 37, 13, and 14. This…
Biobriquettes have been made from renewable energy, namely biomass of rice husk, to be able for energy requirement. Rice husk contains a chemical composition of cellulose 31.12%, lignin 22.34% and …