超声/沸石载钴活化过硫酸盐降解染料废水研究
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摘要
以天然沸石为载体,硝酸钴溶液为浸渍液,使用浸渍法制备沸石载钴活化剂,对沸石载钴活化剂催化过硫酸盐降解橙黄II染料废水进行研究。结果表明,当橙黄II染料废水初始浓度为100 mg/L,钴负载量为5%,沸石载钴活化剂加入量为2 g,溶液pH为10,过硫酸盐加入量为2 g时,橙黄II染料废水的降解效果最佳,反应时间为50 min时去除率达到96%。此外,超声波对反应有增强效应,反应时间为10 min时去除率即可达到93%。超声和沸石载钴活化过硫酸盐产生硫酸自由基,高效氧化降解染料废水,为难降解偶氮染料废水处理提供了新技术。
The natural zeolite was used as the carrier,cobalt nitrate solution was used as the impregnation solution,and the catalyst was prepared by impregnation method. The degradation of dye wastewater with persulfate activated by ultrasonic/zeolite supported cobalt catalyst was studied. The results showed that,when the initial concentration of dye wastewater was 100 mg/L,the cobalt loading was 5%,the addition amount of zeolite carrying cobalt catalyst was 2 g,the solution pH was 10,and the dosage of sodium persulfate was 2 g,the removal rate reached 96% when the reaction time was 50 min. In addition,the ultrasonic wave had an enhanced effect on the reaction. When the reaction time was 10 min,the removal rate can reach 93%. The reaction mechanism was that,the ultrasonic/zeolite cobalt catalyzed persulfate can produce sulfate radicals which can oxidize and degrade dye wastewater efficiently. The prepared catalyst can be reused and maintain a good catalytic effect,which provides an alternative for the catalyst needed for advanced the oxidation of wastewater.
The natural zeolite was used as the carrier,cobalt nitrate solution was used as the impregnation solution,and the catalyst was prepared by impregnation method. The degradation of dye wastewater with persulfate activated by ultrasonic/zeolite supported cobalt catalyst was studied. The results showed that,when the initial concentration of dye wastewater was 100 mg/L,the cobalt loading was 5%,the addition amount of zeolite carrying cobalt catalyst was 2 g,the solution pH was 10,and the dosage of sodium persulfate was 2 g,the removal rate reached 96% when the reaction time was 50 min. In addition,the ultrasonic wave had an enhanced effect on the reaction. When the reaction time was 10 min,the removal rate can reach 93%. The reaction mechanism was that,the ultrasonic/zeolite cobalt catalyzed persulfate can produce sulfate radicals which can oxidize and degrade dye wastewater efficiently. The prepared catalyst can be reused and maintain a good catalytic effect,which provides an alternative for the catalyst needed for advanced the oxidation of wastewater.
引文
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[3]江小林,甘亮,胡昊泽,等.纤维素季铵盐处理活性染料废水[J].环境工程学报,2014,8(08):3337-3343.
[4]Mandegari M,Fashandi H.Untapped Potentials of Acrylonitrile-butadiene-styrene/polyurethane(ABS/PU)Blend Membrane to Purify Dye Wastewater[J].Journal of Environmental Management,2017,197:464-475.
[5]Nguyen T A,Fu C C,Juang R S.Biosorption and Biodegradation of a Sulfur Dye in High-strength Dyeing wastewater by Acidithiobacillus Thiooxidans[J].Journal of Environmental Management,2016,182:265-271.
[6]徐红岩,王俊,张原洁,等.多相催化臭氧氧化技术处理染料废水生化出水[J].环境工程学报,2017,11(05):2819-2827.
[7]高焕方,龙飞,曹园城,等.新型过硫酸盐活化技术降解有机污染物的研究进展[J].环境工程学报,2015,9(12):5659-5664.
[8]朱应良,万金泉,马邕文,等.电化学协同过硫酸盐法氧化处理橙黄G染料废水[J].水处理技术,2016(8):48-51.
[9]程树辉.水解/混凝/强化复合式好氧工艺处理印染废水的试验研究[D].哈尔滨工业大学,2001.
[10]孙威,刘春婷,李娜.金属离子在过硫酸盐降解甲基橙染料废水中活化作用的比较分析[J].辽宁化工,2014,43(11):1373-1375.
[11]赵大传,于萍,李力.微波活化过硫酸盐降解活性艳红K-2BP的效果研究[J].吉林农业大学学报,2013,35(2):211-214.
[12]熊宜栋.功率超声在废水处理中的应用[J].应用声学,2002,21(4):33-35.