GOU Yu-qiang1, HU Fang-di2
(1. Lanzhou Military command centre for disease Prevention and Control, Lanzhou 730020, China; 2. School of Pharmacy, Lanzhou University, Lanzhou 730000, China)
Abstract: The modification of ACF was carried out by converting the surface carboxyl of PAN-ACF to acyl-chlorine reaction with SOCl2, followed by heating reflux at 110℃ with ethylene diamine grafted the amide onto the ACF surface. The surface structure, element combination state and content variation of ACF before and after grafting were characterized by FTIR and XPS. And the concentration variation of Cu2+ was detected by ICP-AES when NH-ACF was applied to remove the Cu2+ in water as well as the maximal adsorption capacity qmax was obtained. The results showed that the modified ACF had higher adsorption and removal capacity, comparing to the unmodified. Its qmax value was about 1.5 times of unmodified one’s.
Key words: activated carbon fiber (ACF); surface chemical grafting; amide; heavy metal Cu2+ ; maximal adsorption capacity qmax
E-mail: hufd@lzu.edu.cn
Analysis and Testing Technology and Instruments, Vol. 18, No. 2, 2012,80-84
