Activated Carbon literally “a type of coal”, is a hard, compact variety of mineral coal that has a high luster. It has the highest carbon count and contains the fewest impurities of all coals, despite its lower calorific content.
Activated Carbon is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 92% and 98%.
Activated Carbon media is hydraulically classified to reduce foreign mineral matter and to lower ash content. The water filtration media is then screened and washed to ensure suitability for water filtration purpose . Activated Carbon characteristically produces reliable improvements in turbidity removal, mostly due to better solids holding capacity. Additionally, low uniformity coefficient media improves flow rates.
Properties of Activated Carbon
Activated carbon has several unique properties that make it an attractive material for a wide range of applications:
High Surface Area
Activated carbon has an extensive surface area, which provides it with a large number of active sites for adsorption. The surface area of activated carbon can range from 500 to 1500 square meters per gram, depending on the production method and the raw material used.
Activated carbon has a highly porous structure, which allows it to adsorb a wide range of molecules and particles. The porosity of activated carbon is usually classified into three types: micropores (<2nm), mesopores (2-50 nm), and macropores (>50 nm).
Activated carbon has remarkable adsorption properties, which allow it to adsorb a wide range of organic and inorganic compounds, including gases, liquids, and dissolved solids. The adsorption capacity of activated carbon depends on several factors, including the pore size, surface area, and the chemical properties of the adsorbate.
Activated carbon is chemically stable and is resistant to most acids, bases, and organic solvents. It is also non-toxic, non-corrosive, and does not decompose under normal conditions.