Degradation of azo dye AO7 with peroxymonosulfate catalyzed by LaCo0.5Cu0.5O3 perovskite
XU Jie1, CHEN Jia-bin2, LU Jian1, DI Xin1, DING Cong1, WANG Ke-qing1, HUANG Tian-yin1
1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215000, China;
2. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
LaCo1-xMxO3(M=Cu、Fe、Mn) perovskite was prepared by sol-gel method, and then used to activate peroxymonosulfate (PMS) to decolorize azo dye orange 7 (AO7). LaCo0.5Cu0.5O3 perovskite was found to show the best catalytic effect on PMS activation for AO7 decolorization. The effects of LaCo0.5Cu0.5O3 dosage, PMS concentration, pH value and common ions (e.g., Cl-) in dye wastewater were further evaluated on the degradation of AO7 in LaCo0.5Cu0.5O3/PMS system. Results show that the degradation of AO7 was accelerated with the increase of LaCo0.5Cu0.5O3 dosage and PMS concentration. Neutral pH was most favorable for the degradation of AO7, and the degradation of AO7 was inhibited under acidic or alkaline conditions. AO7 can be completely degraded in 20min at the optimal operating conditions of 20mg/L LaCo0.5Cu0.5O3, 0.50mmol/L PMS and 0.05mmol/L AO7. The reaction mainly occurred on the surface of the catalyst and ·OH was the main active species responsible for AO7 degradation. Overall, LaCo0.5Cu0.5O3 exhibits excellent performance on PMS activation to decolorize and mineralize AO7.
Meriç S, Kaptan D, Tünay O. Removal of color and COD from a mixture of four reactive azo dyes using fenton oxidation process[J]. Environmental Letters, 2003,38(10):2241-2250.
[2]
Robinson T, Mcmullan G, Marchant R, et al. Remediation of dyes in textile effluent:A critical review on current treatment technologies with a proposed alternative[J]. Bioresource Technology, 2001,77(3):247-255.
[3]
Forgacs E, Cserháti T, Oros G. Removal of synthetic dyes from wastewaters:A review[J]. Environment International, 2004,30(7):953-971.
[4]
Yang Q, Choi H, Chen Y, et al. Heterogeneous activation of peroxymonosulfate by supported cobalt catalysts for the degradation of 2,4-dichlorophenol in water:The effect of support, cobalt precursor, and UV radiation[J]. Applied Catalysis B Environmental, 2008,77(3):300-307.
[5]
Guan Y H, Ma J, Li X C, et al. Influence of pH on the formation of sulfate and hydroxyl radicals in the UV/peroxymonosulfate system[J]. Environmental Science & Technology, 2011,45(21):9308.
[6]
周骏,肖九花,方长玲,等.UV/PMS体系硝基氯酚降解动力学及机理研究[J]. 中国环境科学, 2016,36(1):66-73. Zhou J, Xiao J H, Fang C L, et al. Degradation kinetics and mechanisms of chloronitrophenol in UV/PMS system[J]. China Environmental Science, 2016,36(1):66-73.
[7]
Yang S, Wang P, Yang X, et al. Degradation efficiencies of azo dye Acid Orange 7by 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.
[8]
Chen X, Qiao X, Wang D, et al. Kinetics of oxidative decolorization and mineralization of acid orange 7by dark and photoassisted Co-catalyzed peroxymonosulfate system[J]. Chemosphere, 2007, 67(4):802-808.
[9]
George P A, Dionysios D D. Degradation of organic contaminants in water with sulfate radicals generated by the conjunction of peroxymonosulfate with cobalt[J]. Environmental Science & Technology, 2003,37(20):4790-4797.
[10]
Fernandez J, Maruthamuthu P, Renken A, et al. Bleaching and photobleaching of orange II within seconds by the oxone/Co reagent in fenton-like processes[J]. Applied Catalysis B Environmental, 2004, 49(3):207-215.
[11]
Anipsitakis G P, Dionysiou D D. Radical generation by the interaction of transition metals with common oxidants[J]. Environmental Science & Technology, 2004,38(13):3705.
[12]
Wei C, Zhang J, Zhang Y, et al. Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a Co-NiOx catalyst[J]. Water Science & Technology, 2017,76(6):1436.
[13]
Chen X, Chen J, Qiao X, et al. Performance of nano-Co3O4/peroxymonosulfate system:Kinetics and mechanism study using acid orange 7as a model compound[J]. Applied Catalysis B Environmental, 2008,80(1):116-121.
[14]
Nie Y, Zhang L, Li Y Y, et al. Enhanced fenton-like degradation of refractory organic compounds by surface complex formation of LaFeO3 and H2O2[J]. Journal of Hazardous Materials, 2015,294:195-200.
[15]
Beltrán F J, Pocostales P, álvarez P M, et al. Catalysts to improve the abatement of sulfamethoxazole and the resulting organic carbon in water during ozonation[J]. Applied Catalysis B Environmental, 2009, 92(3):262-270.
[16]
Li L, Min Z, Peng T, et al. Synergistic photocatalytic activity of LnFeO3(Ln=Pr, Y) perovskites under visible-light illumination[J]. Ceramics International, 2014,40(9):13813-13817.
[17]
Pang X, Yang G, Zhang Y, et al. LaCoO3perovskite oxide activation of peroxymonosulfate for aqueous 2-phenyl-5-sulfobenzimidazole degradation:Effect of synthetic method and the reaction mechanism[J]. Chemical Engineering Journal, 2016,304:897-907.
[18]
Chen J, Shen M, Wang X, et al. Catalytic performance of NO oxidation over LaMeO3(Me=Mn, Fe, Co) perovskite prepared by the sol-gel method[J]. Catalysis Communications, 2013,37(13):105-108.
[19]
Natile M M, Ugel E, Maccato C, et al. LaCoO3:Effect of synthesis conditions on properties and reactivity[J]. Applied Catalysis B Environmental, 2007,72(3):351-362.
[20]
Zhu J, Li H, Zhong L, et al. Perovskite oxides:preparation, characterizations, and applications in heterogeneous catalysis[J]. Acs Catalysis, 2014,4(9):2917-2940.
[21]
Merino N A, Barbero B P, Eloy P, et al. La1-xCaxCoO3 perovskite-type oxides:Identification of the surface oxygen species by XPS[J]. Applied Surface Science, 2006,253(3):1489-1493.
[22]
Huang T, Chen J, Wang Z, et al. Excellent performance of cobaltimpregnated activated carbon in peroxymonosulfate activation for acid orange 7oxidation[J]. Environmental Science & Pollution Research, 2017,24(10):9651-9661.
[23]
Liu J, Zhao Z, Shao P, et al. Activation of peroxymonosulfate with magnetic Fe3O4-MnO2 core-shell nanocomposites for 4-chlorophenol degradation[J]. Chemical Engineering Journal, 2015,262(9):854-861.
[24]
Mezohegyi G, Gonçalves F, órfão J J M, et al. Tailored activated carbons as catalysts in biodecolourisation of textile azo dyes[J]. Applied Catalysis B Environmental, 2010,94(1):179-185.
[25]
Zhang T, Zhu H B, Croue J P. Production of sulfate radical from peroxymonosulfate induced by a magnetically separable CuFe2O4 spinel in water:Efficiency, stability, and mechanism[J]. Environmental Science & Technology, 2013,47(6):2784-2791.
[26]
Gong F, Wang L, Li D W, et al. An effective heterogeneous iron-based catalyst to activate peroxymonosulfate for organic contaminants removal[J]. Chemical Engineering Journal, 2015,267:102-110.
[27]
Zhang W, Zhou S, Sun J, et al. Impact of chloride ions on UV/H2O2 and UV/persulfate advanced oxidation processes[J]. Environmental Science & Technology, 2018,52(13):7380-7389.
[28]
张珂,许芬,陈家斌,等.丙酮/氯离子协同活化过一硫酸盐降解酸性橙[J]. 中国环境科学, 2018,38(11):4159-4165. Zhang K, Xu F, Chen J B, et al. Acetone and chloride ion Synergistically activate peroxymonosulfate to decolorize acid orange[J]. China Environmental Science, 2018,38(11):4159-4165.
[29]
Wang Z, Yuan R, Guo Y, et al. Effects of chloride ions on bleaching of azo dyes by Co2+/oxone regent:Kinetic analysis[J]. Journal of Hazardous Materials, 2011,190(1):1083-1087.
[30]
Chen W X, Lu W Y, Yao Y Y, et al. Highly efficient decomposition of organic dyes by aqueous-fiber phase transfer and in situ catalytic oxidation using fiber-supported cobalt phthalocyanine[J]. Environmental Science & Technology, 2007,41(17):6240-6245.
[31]
Yuan R, Ramjaun S N, Wang Z, et al. Photocatalytic degradation and chlorination of azo dye in saline wastewater:kinetics and AOX formation[J]. Chemical Engineering Journal, 2012,192(192):171-178.
[32]
Liang C, Su H W. Identification of sulfate and hydroxyl radicals in thermally activated persulfate[J]. Industrial & Engineering Chemistry Research, 2009,48(11):472-475.
[33]
Liang H Y, Zhang Y Q, Huang S B, et al. Oxidative degradation of p-chloroaniline by copper oxidate activated persulfate[J]. Chemical Engineering Journal, 2013,218(3):384-391.
[34]
Zhang J, Shao X, Shi C, et al. Decolorization of acid orange 7with peroxymonosulfate oxidation catalyzed by granular activated carbon[J]. Chemical Engineering Journal, 2013,232(10):259-265.
[35]
Wang Y, Sun H, Ang M, et al. 3D-hierarchically structured MnO2 for catalytic oxidation of phenol solutions by activation of peroxymonosulfate:Structure dependence and mechanism[J]. Applied Catalysis B Environmental, 2015,164:159-167.
[36]
夏文君,刘锋,郝尚斌,等.石墨烯负载铁锰氧化物活化过一硫酸盐降解金橙G[J]. 环境科学, 2018,39(5):2202-2210. Xia W J, Liu F, Hao S B, et al. Degradation of OG with peroxymonosulfate activated by a MnFe2O4-graphene hybrid[J]. Environmental Science, 2018,39(5):2202-2210.
[37]
Wang K, Zhang J, Lou L, et al. UV or visible light induced photodegradation of AO7 on TiO2 particles:The influence of inorganic anions[J]. Journal of Photochemistry & Photobiology A Chemistry, 2004,165(1):201-207.
