亚铁离子改性沸石对废水中钒(V)的吸附研究

Study on Adsorption of V(V)from Wastewater Using Zeolite Modified by Ferrus Ion

目的:研究改性沸石对钒(V)的吸附行为。方法:通过分光光度法测定溶液中钒(V)浓度,研究了溶液pH值、改性沸石投放量、吸附平衡时间和温度对水中钒(V)吸附率的影响,并探讨了硫酸亚铁改性沸石吸附钒的机理。结果:pH 2.63、改性沸石投放量为0.5g、吸附时间为24h的条件下,处理初始浓度为50.0mg/L的V(V)溶液100mL,去除率可达92%以上。结论:亚铁离子改性沸石对废水中钒(V)有很好吸附效果,室温(298K)时吸附容量为8.51mg/g。

Objective The adsorption of V(V) on zeolite modified by ferrus ion was studied in this paper.Methods The concentration of V(V) in solution was detected by spectrophotometry.Some affecting factors,such as pH value of solutions,adding amount of modified zeolite,adsorption time and temperature on the adsorption rate of V(V) ion have been studied in detail,and the mechanism of V(V) adsorption onto zeolite modified by ferrus sulphate was discussed.Results The results show that the removal ratio for V(V) was about 92% for the treatment of 100 ml of 50.0 mg/L V(V) by using 0.5g zeolite modified by ferrus ion under pH 2.63 for 24 hrs.Conclusion It has better effects for Zeolite Modified by Ferrus ion adsorbed V(V) from wastewater,and the adsorption capacity was 8.51mg/g at room temperature(298K).