N201负载Fe(Ⅲ)复合材料对Sb(Ⅲ)的深度吸附和再生试验研究

Study on adsorption behavior and desorption of N201 resin loaded ferric iron for Sb(Ⅲ)

通过静态和动态吸附试验研究强碱性凝胶型阴离子交换树脂N201负载Fe(Ⅲ)复合材料对水中Sb(Ⅲ)的吸附性能及其再生方法。结果表明:N201-Fe(Ⅲ)对Sb(Ⅲ)的最大静态吸附容量为610μg/g,最佳pH值为7,在有SO_4^(2-)、Cl^-等竞争离子共存条件下,N201-Fe(Ⅲ)仍然对Sb(Ⅲ)具有高效的选择性吸附能力;动态吸附容量为94.05 mg/L;EDTA为最佳再生剂,在动态条件下再生度达到85%。

The adsorption behavior and desorption method of aqueous Sb（Ⅲ） on N201 supported by Fe（Ⅲ） adsorbent material were examined by static and dynamic adsorption experiments. The results show that N201 -Fe（Ⅲ） on Sb（Ⅲ） maximum static adsorption capacity is 610 μg/g, the best pH is 7, and the N201 -Fe（Ⅲ） resin is still highly selective for Sb（Ⅲ） while coexisting with SO4^2- , Cl^- in high concentration. The dynamic adsorption is capacity of 94. 05 mg/L. EDTA is the best re-generative agent, under dynamic condition, its regeneration degree can be up to 85%.