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ID:52343412
大小:1.26 MB
页数:9页
时间:2020-03-26
《乙酰甲胺磷UV—TiO2类Fenton光催化降解过程的响应面法优化.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第42卷第1期应用化工Vo1.42No.12013年1月AppliedChemicalIndustryJan.2013乙酰甲胺磷UV—TiO2/类Fenton光催化降解过程的响应面法优化王欣,王金翠,殷晓梅,杜银花,刘宝林(上海理工大学食品质量与安全研究所,上海200093)摘要:为提高乙酰甲胺磷农药残留降解效率,在单因素实验的基础上,应用响应面法对乙酰甲胺磷纳米TiC:一UV/类Fenton光催化降解过程中纳米TiC添加量、农药初始浓度、添加类Fenton试剂及反应时间等因素进行了优化,建立并验证了所得到的预测模型。结果表明,乙酰甲胺磷纳米TiC,一UV/类Fenton
2、光催化降解过程可应用所建立的二次多项回归拟合方程进行预测,模型拟合良好;同时,除类Fenton组成比例与乙酰甲胺磷初始浓度之间无交互作用外,其他各因素之间均存在显著交互作用;计算得到的优化工艺条件为:纳米02添加量0.1g/L,H2O::Cu“添加比例26.34,乙酰甲胺磷初始浓度23.09mg/L,光照时间25.42min,在此条件下,乙酰甲胺磷降解率预测值为100.414%,验证值为99.99%。说明响应面法对筛选光催化降解工艺条件,提高光催化降解效率是十分有效的。关键词:乙酰甲胺磷;光催化降解;类Fenton;响应面中图分类号:TQ450.9;O644.19文献标识
3、码:A文章编号:1671—3206(2013)01—0033—08OptimizationofphotocatalyticdegradationofacephatebyUV-TiO2/Fenton-likeprocessusingresponsesurfacemethodologyWANGXin,WANGJin—cui,YINXiao—mei,DUYin—hua,LIUBao—lin(InstituteofFoodSafetyandQuality,UniversityofShanghaiforScienceandTechnology,Shanghai200093,Chin
4、a)Abstract:Inordertofurtherimprovethedegradationeficiencyofacephate,basedonthesinglefactorre—suits,theeffectsofTiC2concentration,initialacephateconcentration,Fenton—likeagent(H2O2+Cu“)andreactiontimeonthephotocatalyticdegradationeficiencyofacephatehavebeenoptimizedusingre—sponsesurfacemet
5、hod(RSM),andapredictivemodelwasdevelopedandexperimentallyverified.There·sultsindicatedthatthephotocatalyticdegradationeficiencyofacephatebyTiO2-,Fenton—likeprocesscouldbewellpredictedbyaquadraticregressionmode1.Althoughnosynergisticefectexistedbe—tweenthemolarratioofH2O2:Cu“andinitialacep
6、hafeconcentration,significantsynergisticeffectswereobservedamongtheotherfactors.Undertheoptimalconditionswereasfollows:TiC,concentration0.1g/L,initialacephateconcentration23.09mg/L,molarratioofH202:Cu“26.34andreactiontime25.42min,thepredicteddegradationeficiencyofacephatecouldbe100.414%,w
7、hichwasingoodcon—sistencywiththeexperimentallyresult(99.99%).TheresultsprovedthatRSMcouldbesucessfullyem—ployedtooptimizethephotocatalyticdegradationprocessofacephate,andimprovethephotocatalyticdeg—radationeficiency.Keywords:aeephate;photocatalyticdegradation;Fenton
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