Activated carbons are produced through carbonization followed by activation with gases. Physical activation uses temperatures between 600-1200°C with controlled oxidation. Chemical activation involves impregnation with chemicals at 450-900°C. Various precursors include agricultural wastes, wood by-products, and industrial materials
Activated carbon is a porous material derived from wood, coconut shells or coal. It has a surface area ranging from 500 to 1500 m²/g. Contains micropores (less than 2 nm), mesopores (2-50 nm) and macropores (over 50 nm)
Contains dextrin (90%) and salicylic acid (10%). Cream colored powder with specific gravity of 1.45. Non-flammable but may form combustible dust concentrations
Journal covers Nuclear chemistry, Inorganic chemistry, Adsorption, Catalysis and Aqueous solution. Most cited papers focus on Catalysis, Inorganic chemistry, Nuclear chemistry and Food science. Adsorption studies include Langmuir model, Freundlich equation and activated carbon
Adsorption is the adhesion of molecules to a surface, creating a film. Unlike absorption, adsorbate doesn't penetrate material bulk. Term "adsorption" coined by Heinrich Kayser in 1881
Activated carbon has microscopic pores with surface area exceeding 3,000 m² per gram. Produced from various sources like coconut husks, coal, or paper mill waste. Can be activated through carbonization, oxidation, or chemical impregnation