将Fe(Ⅲ)固载在胶原纤维上制备吸附材料,研究了该吸附材料对砷酸根的吸附性能。结果表明,在pH为3.O~6.0范围内平衡吸附量最大;当温度为303K,As(V)初始浓度为52.5mg/L时,胶原纤维固载铁(FelCF)对As(V)的吸附量可以达到75.4mg/g。吸附平衡符合Langmuir方程,平衡吸附量随温度的升高而增加;吸附动力学可以用拟二级速度方程来描述。
A novel absorbent for removing arsenate in aqueous solution was prepared by immobilizing Fe(Ⅲ) onto collagen fiber (FelCF). The absorption behavior of As(V) on FelCF was investigated. The maximum As(V) absorption was obtained in the pH range of 3.0-6.0. The equilibrium absorption capacity of FelCF for As(V) was 75.4 mgAs/g at 303 K when the initial concentration of arsenate was 52. 5 mgAs/L. The absorption isotherm of As (V) on FelCF could be described by the Langmuir equation, and the absorption capacity increased with increasing temperature. The absorption kinetics of arsenate on FelCF can be well-described by the pseudo-second-order rate model.