Abstract: The absorption performance of Fe³⁺ on the surface of activated carbon fibers (ACF) was investigated by static and dynamic absorption experiments. The breakthrough curves of dynamic absorption in various experimental conditions were studied, and the surface morphology before and after Fe³⁺ absorption of ACF were investigated by scanning electron microscopy (SEM). The results show that the absorption process is composed of physical absorption and chemical absorption, and that the absorption capacity can be improved by increasing the surface area of ACF and the temperature of the reaction solution. In the dynamic absorption process, the treated water of the best quality is obtained when the flow rate is of 10 mL/min.

Key words: iron ion；activated carbon fiber；condensed water；static absorption；dynamic absorption