稻壳为模板和硅源合成Ni-TiO2-SiO2对龙胆紫水溶液的吸附性能研究

摘要

[Objective ] The aim was to study the adsorption property of adsorbent Ni-TiO2 -SiO2 synthesized by using rice husks as silicon source and template to gentian violet solution. [ Method ] The renewable dye adsorbent Ni-TiO2 -SiO2 was synthesized by using rice husks as raw material to study the adsorption property of Ni-TiO2-SiO2 to gentian violet. [Result] The adsorption rate of Ni-TiO2-SiO2 to gentian violet reached about 90% after adsorption for 1 h. In 100 ml of gentian violet solution with concentration of 25 mg/L and pH of 8, Ni-TiO2-SiO2 with dosage of 0.07 g had the best adsorption effect. Most importantly, adsorbent Ni-TiO2-SiO2 could be used repeatedly, and couldn' t lead to sec ondary pollution due to leaking. [ Conclusion ] The study could provide references for practical engineering application.%[目的]研究稻壳为模板和硅源合成Ni-TiO2-SiO2对龙胆紫水溶液的吸附性能.[方法]以稻壳为原料合成可再生的染料吸附剂Ni-TiO2-SiO2,研究Ni-TiO2-SiO2对龙胆紫染料的吸附行为.[结果]吸附1h后Ni-TiO2-SiO2对龙胆紫的吸附率可达90％左右；浓度为25 mg/L的100 ml龙胆紫染料水溶液中,当染料溶液的pH =8、吸附剂用量为0.07g时,Ni-TiO2-SiO2的吸附效果最好.更重要的是Ni-TiO2-SiO2作为吸附剂可重复使用,并不会因为泄露造成二次污染.[结论]该研究为实际工程应用提供依据.