Activated carbon types
What is coconut shell based activated carbon?
Coconut shell based activated carbon is one major type of activated carbons which exhibits a high degree of micropores, which makes it especially suitable for water filtration applications. Coconut shell activated carbon is sourced from coconut trees which can live in excess of 70 years, therefore it can be considered a renewable resource. This type of carbon has high hardness and filtration performance characteristics which makes it a perfect choice for most treatment applications.
The majority of the world’s coconut shell activated carbon is produced in Sri Lanka, including raw materials sourcing and activation process. Coconut activated carbon can reach very high degrees of purity. Production includes a superheating process called pyrolysis where shells are transformed into char followed by a fluidization processes in a FBR (fluidized bed reactor) where the carbon is steam activated.
Mellifiq offers any coconut carbon for any application
Mellifiq offers the word’s widest and most competitive selection of coconut shell activated carbon and delivers world-wide. We offer deliveries in 500 and 25 kg bags or as an integrated part of our turn-key solutions for challenging air and water treatment, such as water filter systems under our Water Maid brand and Nodora brand. While we can manufacture specialized and tailor-made activated carbon, our standard types and sizes are guaranteed to handle the most difficult treatment tasks. An overview of our coconut based activated carbon types and applications can be found in the table below.
Coconut activated carbon performance
Filtration capacity and performance depends on multiple factors and carbon characteristics. Specifically, coconut shell activated carbon is known for its high levels of hardness, purity and low ash content. The production quality of the carbon is often tested against the CTS (Carbon Tetrachloride, CCl4) activity according to ASTM D3467 to ensure the proper pore volume of the the final product. Recently it has been replaced by Butane activity = CCl4 activity / 2.55.
In conjunction with CTC values, the Iodine number can be used to test the adsorption capacity in mg of adsorbed iodine per g of carbon (mg/g) and is normally the deciding performance factor in evaluating the required filtration capacity, in combination with granule mesh size, ash content and hardness.