{"title":"响应面法研究UV/TiO2-N光催化降解AR40","authors":"M. Nademi, M. Moraveji, M. Mansouri","doi":"10.18869/ACADPUB.JBRMS.4.2.29","DOIUrl":null,"url":null,"abstract":"Introduction: Advanced oxidation processes (AOPs) suggest a highly reactive, nonspecific oxidant namely hydroxyl radical (OH•), that oxidize a wide range of pollutants fast and nonselective in wastewater and water. Materials and methods: In this work, the nitrogen-doped titanium dioxide nanoparticles were primed by sol-gel method, characterized by X-ray diffraction and Scanning Electron Microscopy (SEM), for the degradation of Acid Red 40 (AR 40) solution in water. The effectiveness of the treatment method applied for the degradation of AR 40 based on AOPs was investigated. Results: The three various key parameters were optimized by using response surface modeling, namely: pH, TiO2-N concentration and the initial AR 40 concentrations. The optimized values were obtained at pH = 11, TiO2-N concentration = 0.09 g/L, and the initial AR 40 concentration = 19 mg/L. Conclusion: Under the optimum conditions, performance of photocatalytic degradation reaches 92.47% in 1 hr. Kinetic constant was evaluated using first-order equation to obtain the rate constant, K.","PeriodicalId":15047,"journal":{"name":"Journal of Basic Research in Medical Sciences","volume":"4 1","pages":"29-40"},"PeriodicalIF":0.0000,"publicationDate":"2017-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Investigation of UV/TiO2-N photocatalytic degradation of AR 40 using response surface methodology (RSM)\",\"authors\":\"M. Nademi, M. Moraveji, M. Mansouri\",\"doi\":\"10.18869/ACADPUB.JBRMS.4.2.29\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Introduction: Advanced oxidation processes (AOPs) suggest a highly reactive, nonspecific oxidant namely hydroxyl radical (OH•), that oxidize a wide range of pollutants fast and nonselective in wastewater and water. Materials and methods: In this work, the nitrogen-doped titanium dioxide nanoparticles were primed by sol-gel method, characterized by X-ray diffraction and Scanning Electron Microscopy (SEM), for the degradation of Acid Red 40 (AR 40) solution in water. The effectiveness of the treatment method applied for the degradation of AR 40 based on AOPs was investigated. Results: The three various key parameters were optimized by using response surface modeling, namely: pH, TiO2-N concentration and the initial AR 40 concentrations. The optimized values were obtained at pH = 11, TiO2-N concentration = 0.09 g/L, and the initial AR 40 concentration = 19 mg/L. Conclusion: Under the optimum conditions, performance of photocatalytic degradation reaches 92.47% in 1 hr. Kinetic constant was evaluated using first-order equation to obtain the rate constant, K.\",\"PeriodicalId\":15047,\"journal\":{\"name\":\"Journal of Basic Research in Medical Sciences\",\"volume\":\"4 1\",\"pages\":\"29-40\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-03-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Basic Research in Medical Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.18869/ACADPUB.JBRMS.4.2.29\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Basic Research in Medical Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18869/ACADPUB.JBRMS.4.2.29","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
摘要
高级氧化过程(AOPs)是一种高活性的非特异性氧化剂,即羟基自由基(OH•),它可以快速和非选择性地氧化废水和水中的各种污染物。材料与方法:采用溶胶-凝胶法制备了氮掺杂二氧化钛纳米颗粒,并用x射线衍射和扫描电镜(SEM)对其进行了表征,用于水中酸性红40 (AR 40)溶液的降解。研究了基于AOPs的处理方法对ar40的降解效果。结果:利用响应面模型对pH、TiO2-N浓度、ar40初始浓度三个关键参数进行了优化。在pH = 11、TiO2-N浓度= 0.09 g/L、ar40初始浓度= 19 mg/L的条件下,得到了最佳值。结论:在最佳条件下,1 h的光催化降解率可达92.47%。用一阶方程计算动力学常数,得到速率常数K。
Investigation of UV/TiO2-N photocatalytic degradation of AR 40 using response surface methodology (RSM)
Introduction: Advanced oxidation processes (AOPs) suggest a highly reactive, nonspecific oxidant namely hydroxyl radical (OH•), that oxidize a wide range of pollutants fast and nonselective in wastewater and water. Materials and methods: In this work, the nitrogen-doped titanium dioxide nanoparticles were primed by sol-gel method, characterized by X-ray diffraction and Scanning Electron Microscopy (SEM), for the degradation of Acid Red 40 (AR 40) solution in water. The effectiveness of the treatment method applied for the degradation of AR 40 based on AOPs was investigated. Results: The three various key parameters were optimized by using response surface modeling, namely: pH, TiO2-N concentration and the initial AR 40 concentrations. The optimized values were obtained at pH = 11, TiO2-N concentration = 0.09 g/L, and the initial AR 40 concentration = 19 mg/L. Conclusion: Under the optimum conditions, performance of photocatalytic degradation reaches 92.47% in 1 hr. Kinetic constant was evaluated using first-order equation to obtain the rate constant, K.