亚硫酸钠-Fe(Ⅱ)-溶解氧对酸性紫FBL降解脱色的研究
|
摘要
以酸性紫FBL为降解目标,采用亚硫酸钠-Fe(Ⅱ)-溶解氧体系产生的硫酸根自由基(·SO4-)降解酸性紫FBL脱色,比较了不同体系的降解脱色性能,考察了pH值、Fe~(2+)浓度、SO_3~(2-)浓度、空气流量、酸性紫FBL的初始浓度对降解脱色的影响。结果表明,在最佳的实验条件为:pH=7.0,Fe2+浓度为0.75 mmol/L,SO_3~(2-)浓度为1.25 mmol/L,空气流量为0.70 L/min,污染物浓度为128 mg/L。经过40 min的降解脱色,酸性紫FBL溶液的脱色率可达到94%以上。
The acid violet FBL was used as the degradation target, and the degradation of acid violet FBL by sulfate radical free radical(·SO4-)produced through sodium sulfite-Fe(II)-dissolved oxygen system was investigated, and the decolorization performance of different systems was compared. The effects of pH, ferrous concentration, sodium sulfite concentration, air flow and initial concentration of acid violet FBL for decolorization were investigated. The results showed that the best experimental conditions were as follows:pH=7.0, ferrous concentration was 0.75 mmol/L, sodium sulfite concentration was 1.25 mmol/L, air flow rate was0.70 L/min, and pollutant concentration was 128 mg/L. After 40 min degradation, the degradation rate of acid violet FBL solution could reach over 94%.
The acid violet FBL was used as the degradation target, and the degradation of acid violet FBL by sulfate radical free radical(·SO4-)produced through sodium sulfite-Fe(II)-dissolved oxygen system was investigated, and the decolorization performance of different systems was compared. The effects of pH, ferrous concentration, sodium sulfite concentration, air flow and initial concentration of acid violet FBL for decolorization were investigated. The results showed that the best experimental conditions were as follows:pH=7.0, ferrous concentration was 0.75 mmol/L, sodium sulfite concentration was 1.25 mmol/L, air flow rate was0.70 L/min, and pollutant concentration was 128 mg/L. After 40 min degradation, the degradation rate of acid violet FBL solution could reach over 94%.
引文
[1]卢昶雨,叶林静,张鹭,等.臭氧氧化处理模拟印染废水[J].应用化工,2013,42(6):1014-1016.
[2]刘晓艳,刘莲,吴俊峰,等.Fenton/过硫酸盐降解水中的4-乙酰氨基酚[J].工业水处理,2018,38(10):25-28.
[3]谢桂香,林霞晖,张著森.BiOBr/TiO2复合光催化材料的制备及其光催化性能的研究[J].井冈山大学学报:自然科学版,2018,39(4):28-33.
[4]Gao Y Q,Gao N Y,Deng Y,et al.Ultraviolet(UV)light-activated persulfate oxidation of sulfamethazine in water[J].Chemical Engineering Journal,2012,195-196(2):248-253
[5]黄雅丽.ZnO协同过硫酸钠光催化降解孔雀石绿的研究[J].井冈山大学学报:自然科学版,2017,38(4):32-37.
[6]Tan C Q,Gao N Y,Deng Y,et al.Heat-activated persulfate oxidation of diuron in water[J].Chemical Engineering Journal,2012,203(2):294-300
[7]Xie X F,Zhang Y Q,Huang W L,et al.Degradation kinetics and mechanism of aniline by heat-assisted persulfate oxidation[J].Journal of Environmental Sciences,2012,24(5):821-826
[8]Tan C Q,Gao N Y,Chu W H,et al.Degradation of diuron by persulfate activated with ferrous ion[J].Separation and Purification Technology,2012,95(1):44-48
[9]Xu X R,Li X Z.Degradation of azo dye Orange G in aqueous solutions by persulfate with ferrous ion[J].Separation and Purification Technology,2010,72(1):105-111
[10]吉冰冰,肖玫,张琳,等.铁-亚硫酸盐配合物体系氧化处理硫酸厂的含砷废水[J].水处理技术,2014,40(9):1-4.
[11]Liu Z Z,Yang S Y,Yuan Y N,et al.A novel heterogeneous system for sulfate radical generation through sulfite activation on a CoFe2O4 nanocatalyst surface[J].Journal of Hazardous Materials,2017,324:583-592.
[12]郭一舟.基于亚硫酸根自由基高级氧化技术处理染料废水效能及机理研究[D].武汉:华中科技大学,2016.
[2]刘晓艳,刘莲,吴俊峰,等.Fenton/过硫酸盐降解水中的4-乙酰氨基酚[J].工业水处理,2018,38(10):25-28.
[3]谢桂香,林霞晖,张著森.BiOBr/TiO2复合光催化材料的制备及其光催化性能的研究[J].井冈山大学学报:自然科学版,2018,39(4):28-33.
[4]Gao Y Q,Gao N Y,Deng Y,et al.Ultraviolet(UV)light-activated persulfate oxidation of sulfamethazine in water[J].Chemical Engineering Journal,2012,195-196(2):248-253
[5]黄雅丽.ZnO协同过硫酸钠光催化降解孔雀石绿的研究[J].井冈山大学学报:自然科学版,2017,38(4):32-37.
[6]Tan C Q,Gao N Y,Deng Y,et al.Heat-activated persulfate oxidation of diuron in water[J].Chemical Engineering Journal,2012,203(2):294-300
[7]Xie X F,Zhang Y Q,Huang W L,et al.Degradation kinetics and mechanism of aniline by heat-assisted persulfate oxidation[J].Journal of Environmental Sciences,2012,24(5):821-826
[8]Tan C Q,Gao N Y,Chu W H,et al.Degradation of diuron by persulfate activated with ferrous ion[J].Separation and Purification Technology,2012,95(1):44-48
[9]Xu X R,Li X Z.Degradation of azo dye Orange G in aqueous solutions by persulfate with ferrous ion[J].Separation and Purification Technology,2010,72(1):105-111
[10]吉冰冰,肖玫,张琳,等.铁-亚硫酸盐配合物体系氧化处理硫酸厂的含砷废水[J].水处理技术,2014,40(9):1-4.
[11]Liu Z Z,Yang S Y,Yuan Y N,et al.A novel heterogeneous system for sulfate radical generation through sulfite activation on a CoFe2O4 nanocatalyst surface[J].Journal of Hazardous Materials,2017,324:583-592.
[12]郭一舟.基于亚硫酸根自由基高级氧化技术处理染料废水效能及机理研究[D].武汉:华中科技大学,2016.