Production of activated carbon by H3PO4 activation treatment of corncob and its performance in removing nitrobenzene from water

✍ Scribed by Sun, Yong ;Zhang, Jin-Ping ;Yang, Gang ;Li, Zuo-Hu

• Publisher: American Institute of Chemical Engineers
• Year: 2007
• Tongue: English
• Weight: 547 KB
• Volume: 26
• Category: Article
• ISSN: 0278-4491
• DOI: 10.1002/ep.10181

✦ Synopsis

Abstract

Activated carbon was produced by fast precarbonization of corncobs in a fluidized bed followed by H~3~PO~4~ activation. The results showed that the product is essentially microporous carbon whose BET surface area and pore volume when the carbon was activated at 900°C were 1588 m^2^/g and 0.8163 mL/g, respectively. The experimental operating conditions were as follows: carbonizing the corncobs in the preheated fluidized‐bed at 350°C for 5 min using N~2~ as carrier gas; impregnating the char with H~3~PO~4~ with an impregnation ratio of 1:5 (Char/H~3~PO~4~); and activating the mixture at 900°C for 30 min in the tubular furnace. The potential usefulness of the resultant carbons for removal of nitrobenzene from water was also investigated. © 2007 American Institute of Chemical Engineers Environ Prog 26:78–85, 2007.