EDTA络合亚铁离子活化过硫酸盐降解甲基橙
李 江,毕佳欣,韩晔娇
太原工业学院 化学与化工系,山西 太原 030008
EDTA complexed ferrous ion activated persulfate degraded methyl orange
Li Jiang, Bi Jiaxin, Han Yejiao
Taiyuan Institute of Technology, Department of Chemistry and Chemical Engineering, Taiyuan 030008, China
摘要 以甲基橙模拟染料废水,用EDTA络合Fe(Ⅱ)活化过硫酸盐形成SO4-·自由基来降解甲基橙。通过实验研究表明:初始过硫酸钠的浓度为4 mmol/L、[FeY]2-溶液浓度为1.5 mmol/L、反应温度为45 ℃时,甲基橙(10 mg/L)的降解率最高可到达98.4%;同时降解率会随着溶液酸度升高而增大。
关键词 :
EDTA ,
螯合Fe(Ⅱ) ,
过硫酸盐 ,
甲基橙
Abstract :Methyl orange was used to imitate dye wastewater, and EDTA-Fe(II) activated sodium persulfate to form sulfate free radicals to degrade methyl orange. The results showed that the initial concentration of Na2S2O8 was 4 mmol/L, the concentration of [FeY]2- was 1.5 mmol/L, the reaction temperature was 45 ℃, the degradation rate of methyl orange (10 mg/L) was the highest, reaching 98.4%. the degradation rate of methyl orange could be increased by raising acidity of solution.
Key words :
EDTA
chelate Fe(II)
persulfate
methyl orange
作者简介 : 李 江( 1968— ),女,山西太原人,副教授。
[ 1 ] 李萱萱. 高级氧化技术在处理染料废水中的应用[ J ]. 化工进展,2012,31( S2):219 - 222.
[ 2 ] 杨世迎,杨 鑫,王 萍,等. 过硫酸盐高级氧化技术的活化方法研究进展降[ J ]. 现代化工2009,29( 4 ):13 - 18.
[ 3 ] 杨德敏,王 兵. 高级氧化技术处理造纸废水的应用研究[ J ]. 中国造纸 2010 ,29( 07 ):69 - 73.
[ 4 ] 李社锋,王文坦,邵 雁,等. 活化过硫酸盐高级氧化技术的研究进展及工程应用[ J ]. 环境工程,2016,34( 9 ):171 - 174.
[ 5 ] Yang S, Wang P, Yang X, et al. Degradation efficiencies of azo dye Acid Orange 7 by the interaction of heat, UV and anions with common oxidants: Persulfate, peroxymonosulfate and hydrogen peroxide[ J ]. Journal of Hazardous Materials, 2010, 179( 1 ): 552 - 558.
[ 6 ] 杨梅梅,周少奇,郑永鑫,等. 零价铁活化过硫酸钠降解甲基橙[ J ]. 化工进展,2012,31( 09 ):2 093 - 2 096.
[ 7 ] 于 辉,金春姬,王鹏远,等. Fe~(2+)与Fe~0活化过二硫酸盐降解活性艳蓝KN-R[ J ]. 环境科学研究,2015,28( 1 ):88 - 95.
[ 8 ] 分析化学[ M ]. 高等教育出版社,2006,7:387.
[ 9 ] 马丽华,万金泉. Fe2+催化H2O2、S2O82-、S2O82--H2O2降解橙黄G[ J ]. 化学进展,2012,31( 10 ):2 330 - 2 334.
[ 10 ] Tsitonaki A, Smets B F, Bjerg P L. Effects of heat-activated persulfate oxidation on soil microorganisms[ J ]. Water Research, 2008, 42 (4 - 5): 1 013 - 1 022.
[ 11 ] 杨世迎,陈友媛,胥慧真,等. 过硫酸盐活化高级氧化新技术[ J ]. 化学进展,2008, 20( 9 ):1 433 - 1 438.