화학공학소재연구정보센터
Canadian Journal of Chemical Engineering, Vol.82, No.5, 968-977, 2004
Experimental and numerical modeling studies of arsenic removal with wood ash from aqueous streams
Most of the arsenic removal processes are not cost-effective and/or not efficient in removing As (III). In this research, it was found that Maple wood ash has the potential to adsorb both As (III) and As (V) from contaminated aqueous streams at low concentration levels without any chemical treatment. Static tests showed up to 80% arsenic removal and in various dynamic column tests the arsenic concentration was reduced from 500 ppb to lower than Sppb. Finally, the ash column was modeled using the surface excess theory. The identified model significantly facilitates practical design of arsenic adsorption system.