Carbon Activation

Carbon materials are activated through a series of processes which includes:

• Removal of all water (dehydration)

• Conversion of the organic matter to elemental carbon, driving off the noncarbon portion (carbonization)

• Burning off tars and pore enlargement (activation).

Initially, the material to be converted is heated to 170° C to effect water removal Temperatures are than raised above 170° C driving off CO* CO, and acetic acid vapors. At temperatures of about 275" C, the decomposition of the material results and tar, methanol, and other by-products are formed. Nearly 80 percent elemental carbon is then effected by prolonged exposure to 400- 600° C. Activation of this product follows with the use of steam or carbon dioxide as an activating agent. The superheated steam, 750-950" C, passes through the carbon burning out by-product blockages, and expanding and extending the pore network.

Was this article helpful?

0 0
Waste Management And Control

Waste Management And Control

Get All The Support And Guidance You Need To Be A Success At Understanding Waste Management. This Book Is One Of The Most Valuable Resources In The World When It Comes To The Truth about Environment, Waste and Landfills.

Get My Free Ebook

Post a comment