The adsorption is inversely proportional to size of the particle, i.e. with increase in size of particle the adsorption decreases. The finer the particles size of an activated carbon, the better the access to the surface area and the faster the rate of the adsorption kinetics.

Surface area can be measured by BET methods other methods available are porosimetry , the Nobel method is achieve by T. Bartels – Rausch and M. Ammann (PSI) for measuring low specific area. According to AWWA, 1967 in general, coarser particle size distribution will permit higher hydraulic loading and back wash rate but will have lower adsorptive rates.

Peavy H. S. L. D. Rowe and G. Tchobanoglous,” Environmental Engineering” Mc. Graw Hill International Editions,” Civil Engineering Series, Mc. Graw hill Book Company, Singapore.

T. Bartles and M. Ammanm” A BET Instrument To Measure Very Low Surface,” JGR 4335 (2002) pp 107.

Again : company link

http://www.activatedcarbon.com.au/carbonbasics.htm

There are instruments that analyze such particles too.

Check this out https://www.researchgate.net/profile/Navid_Saeidi2/publication/275222044_Effects_of_Powder_Activated_Carbon_Particle_Size_on_Adsorption_Capacity_and_Mechanical_Properties_of_the_Semi_Activated_Carbon_Fiber/links/55954fb308ae21086d205110/Effects-of-Powder-Activated-Carbon-Particle-Size-on-Adsorption-Capacity-and-Mechanical-Properties-of-the-Semi-Activated-Carbon-Fiber.pdf

https://www.astm.org/Standards/D2862.htm

Good question

Experimental mechanical sieving and machine vision methods can be used

The adsorption is inversely proportional to size of the particle, i.e. with increase in size of particle the adsorption decreases. The finer the particles size of an activated carbon, the better the access to the surface area and the faster the rate of the adsorption kinetics.

Surface area can be measured by BET methods other methods available are porosimetry , the Nobel method is achieve by T. Bartels – Rausch and M. Ammann (PSI) for measuring low specific area. According to AWWA, 1967 in general, coarser particle size distribution will permit higher hydraulic loading and back wash rate but will have lower adsorptive rates.

Peavy H. S. L. D. Rowe and G. Tchobanoglous,” Environmental Engineering” Mc. Graw Hill International Editions,” Civil Engineering Series, Mc. Graw hill Book Company, Singapore.

T. Bartles and M. Ammanm” A BET Instrument To Measure Very Low Surface,” JGR 4335 (2002) pp 107.

As stated by Dr Sheth

Good point , following

With a standard sieving mesh.

thank you very much for all the answers- Aparna, Harry, Olusegun, and Dr K N Sheth followed by Fernando

Thank you Chintal kumar and Dhia, RG colleagues for your replies.

As per Dr Sheth

As per Dr Sheth

Sharing link:

https://books.google.es/books?id=RhVFDwAAQBAJ&pg=PA398&lpg=PA398&dq=How+can+we+measure+size+of+particle+of+an+activated+carbon+in+the+lab?&source=bl&ots=9CYtaw76wA&sig=aajZX6haSJMomDTWPuvwdfoGgKc&hl=ca&sa=X&ved=2ahUKEwiTv_-NgNrZAhWIT98KHR5fAhIQ6AEwA3oECAUQAQ

Regards!