EDTA络合亚铁离子活化过硫酸盐降解罗丹明B  

EDTA Complex Ferrous Ion-Activated Persulfate Degradation of Rhodamine B

作　　者：李江 赵鹏龙 LI Jiang;ZHAO Peng-long(Dept.of Chemistry and Chemical Engineering,Taiyuan Institute of Technology,Taiyuan 030008,China)

机构地区：[1]太原工业学院化学与化工系,山西太原030008

出　　处：《安徽化工》2020年第6期43-45,共3页Anhui Chemical Industry

摘　　要：以罗丹明B为模拟废水,过硫酸钠为氧化剂,乙二胺四乙酸合铁(Ⅱ)为活化剂,考查过硫酸浓钠度、EDTA络合亚铁离子用量、溶液pH值、反应温度对降解罗丹明B的影响。结果表明:20℃时100 mL 10 mg/L的罗丹明B中加入浓度为4 mmol/L的过硫酸钠,活化剂浓度为2 mmol/L,反应时间60 min,罗丹明B降解率可达到88.6%。升高反应温度,降低反应物pH值都可以提高废水的降解率。Rhodamine B was used to imitate dye wastewater,and EDTA-Fe(Ⅱ)activated sodium persulfate to form sulfate free radicals to degrade Rhodamine B.The effects of the initial persulfate concentration,the concentration of the complex,the initial value of pH,the reaction temperature were investigated respectively.The results showed that at 20℃the degrada⁃tion rate of Rhodamine B(100 mL,10 mg/L)reached to 88.6%at the initial concentration of sodium persulfate is 4 mmol/L,the concentration of[FeY]2-is 2 mmol/L.Rhodamine B degradation rate can be improved by raising temperature and reduc⁃ing pH of solution.

关 键 词：罗丹明B 过硫酸盐 EDTA FE^2+ 

分 类 号：O643.36[理学—物理化学] X788[理学—化学]