基于响应面法的Fe~0/S_2O_8~(2-)体系氧化垃圾渗滤液去除UV_(254)研究
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摘要
为提高Fe~0/S_2O_8~(2-)体系氧化垃圾渗滤液去除有机物的效果,试验采用响应面法优化反应条件,借助响应面法的中心组合试验设计了以紫外吸光度UV_(254)的去除率为响应值的二次回归模型,分析零价铁(Fe~0)投加量、初始pH值和S_2O_8~(2-)与12COD_0的质量比3个因素的交互作用,确定最优反应条件。结果表明在Fe~0投加量为31.3mmol/L、初始pH值为4.4,ω(S_2O_8~(2-)/12COD_0)为1.14条件下,UV_(254)的去除率达到最大值72%。
Response surface method(RSM) was used to optimize the reaction conditions in order to improve the catalytic effect of Fe~0/S_2O_8~(2-)system on degradation of organic matter in landfill leachate.Based on the box-behnken design(BBD) of RSM,a quadratic regression model was designed with the removal rate of UV254 as the response value.The interaction of three factors,i.e.Fe~0 dosage,initial pH value and ω(S_2O_8~(2-)/12 COD0) value(the mass ratio of S_2O_8~(2-) to 12COD0,reflecting the dosage of sodium persulfate),was analyzed to determine the optimal reaction conditions.The results showed that the removal rate of UV254 reached the maximum of 72% under the conditions of Fe0 dosage of 31.3 mmol,initial pH of 4.4 and ω(S_2O_8~(2-)/12 COD0) value of 1.14.
Response surface method(RSM) was used to optimize the reaction conditions in order to improve the catalytic effect of Fe~0/S_2O_8~(2-)system on degradation of organic matter in landfill leachate.Based on the box-behnken design(BBD) of RSM,a quadratic regression model was designed with the removal rate of UV254 as the response value.The interaction of three factors,i.e.Fe~0 dosage,initial pH value and ω(S_2O_8~(2-)/12 COD0) value(the mass ratio of S_2O_8~(2-) to 12COD0,reflecting the dosage of sodium persulfate),was analyzed to determine the optimal reaction conditions.The results showed that the removal rate of UV254 reached the maximum of 72% under the conditions of Fe0 dosage of 31.3 mmol,initial pH of 4.4 and ω(S_2O_8~(2-)/12 COD0) value of 1.14.
引文
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[3]李章良,郭海灵.高级氧化技术处理垃圾渗滤液的研究现状与进展[J].环境工程,2014,32(5):30-33.(LIZhangliang,GUO Hailing.Status and process of advanced oxidation processes on landfill leachate treatment[J].Environmental Engineering,2014,32(5):30-33.(in Chinese))
[4]DE MORAIS J L,ZAMORA P P.Use of advanced oxidation processes to improve the biodegradability of mature landfill leachates[J].Journal of Hazardous Materials,2005,123(1/2/3):181.
[5]王兵,李娟,莫正平,等.基于硫酸自由基的高级氧化技术研究及应用进展[J].环境工程,2012,30(4):53-57.(WANG Bing,LI Juan,MO Zhengping,et al.Progress in advanced oxidation processes based on sulfate radical[J].Environmental Engineering,2012,30(4):53-57.(in Chinese))
[6]朱凌峰,罗琳,蒋宏国,等.Fenton试剂在微波条件下处理稻壳热解发电含酚废水的试验[J].水资源保护,2010,26(3):53-56.(ZHU Lingfeng,LUO Lin,JIANGHongguo,et al.Experiment on treatment of phenolcontaining water from the generation of electricity of rice hull pyrogenation with Fenton reagent in the condition of microwaves[J].Water Resources Protection,2010,26(3):53-56.(in Chinese))
[7]丁耀彬.基于过渡金属氧化物催化活化过一硫酸盐高级氧化方法及其在有机污染物降解中的应用[D].武汉:华中科技大学,2013.
[8]张成.基于硫酸根自由基的过硫酸钠高级氧化法氧化降解染料的研究[D].广州:华南理工大学,2012.
[9]于辉,金春姬,王鹏远,等.Fe2+与Fe0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.(YU Hui,JIN Chunji,WANG Pengyuan,et al.Degradation of reactive Briliant blue KN-R by persulfate activated with Fe2+and Fe0[J].Research of Environmental Sciences,2015,28(1):88-95.(in Chinese))
[10]LIANG C,LAI M C.Trichloroethylene degradation by zero valent iron activated persulfate oxidation[J].Environmental Engineering Science,2008,25(7):1071-1078.
[11]丰娇,吴耀国,张娜.零价铁-Fenton试剂体系降解有机污染物的研究进展[J].化工环保,2012,32(5):413-418.(FENG Jiao,WU Yaoguo,ZHANG Na.Research progresses in degradation of organic pollutants in zero valent iron-fenton reagaent system[J].Environmental Protection of Chemical Industry,2012,32(5):413-418.(in Chinese))
[12]PETERNEL I,KOPRIVANAC N,LONCARIC B,et al.Iron activated persulfate oxidation of an azo dye in model wastewater:influence of iron activator type on process optimization[J].Journal of Environmental Engineering,2010,137(6):454-463.
[13]BREMNER D H,BURGESS A E,HOULLEMARE D,et al.Phenol degradation using hydroxyl radicals generated from zero-valent iron and hydrogen peroxide[J].Applied Catalysis B Environmental,2006,63(1/2):15-19.
[14]MONTGOMERY D C.Design and analysis of experiments[J].Journal of the American Statistical Association,2000,16(2):241-242.
[15]OH S Y,KIM H W,PARK J M,et al.Oxidation of polyvinyl alcohol by persulfate activated with heat,Fe2+,and zero-valent iron[J].Journal of Hazardous Materials,2009,168(1):346-351.
[16]DEAN A,VOSS D.Design and Analysis of Experiments[J].Springer Texts in Statistics,1999,42(3):308.
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