What are the physical characteristics of activated carbon?
Tue, 09/10/2013 - 10:18
• Hardness - An important factor in system design, filter life and product handling. There are large differences in the hardness of activated carbons, depending on the raw material and activity level. • Bulk Density -Should be carefully considered when filling fixed volumes as it can have considerable commercial implications. • The backwashed and drained density will show a lower value due to the water film between the particles of activated carbon. • Particle size distribution - The finer the particle size of an activated carbon, the better the access to the surface area and the faster the rate of adsorption kinetics. In vapour phase systems this needs to be considered against pressure drop, which will affect energy cost. Careful consideration of particle size distribution can provide significant operating benefits.