Pub Date : 2018-01-01DOI: 10.26802/JAOTS.2017.0067
R. Su, Zongsu Wei, S. Luo, Richard Spinney, Lingwei Gao, Yucheng Liu, Chuan Wu, L. Chai, Ruiyang Xiao
{"title":"Environmental Matrix Effects on Degradation Kinetics of Ibuprofen in a UV/ Persulfate System","authors":"R. Su, Zongsu Wei, S. Luo, Richard Spinney, Lingwei Gao, Yucheng Liu, Chuan Wu, L. Chai, Ruiyang Xiao","doi":"10.26802/JAOTS.2017.0067","DOIUrl":"https://doi.org/10.26802/JAOTS.2017.0067","url":null,"abstract":"","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"41 1","pages":"138-148"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75652090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.26802/JAOTS.2017.0080
Doruk Dogu, G. Karakas
{"title":"Photocatalytic properties and characterization of praseodymium-doped titanium dioxide","authors":"Doruk Dogu, G. Karakas","doi":"10.26802/JAOTS.2017.0080","DOIUrl":"https://doi.org/10.26802/JAOTS.2017.0080","url":null,"abstract":"","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"109 1","pages":"215-226"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83352716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.26802/JAOTS.2017.0056
Wan Weitao, Hao Tang, Na Li, Yangmin Ma, Xiying Ren
{"title":"Direct Hydroxylation of Benzene to Phenol over CuxOy@C-HP Catalyst","authors":"Wan Weitao, Hao Tang, Na Li, Yangmin Ma, Xiying Ren","doi":"10.26802/JAOTS.2017.0056","DOIUrl":"https://doi.org/10.26802/JAOTS.2017.0056","url":null,"abstract":"","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"9 1","pages":"109-117"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89984372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.26802/JAOTS.2017.0070
Yiming Tang, Sush Ma, Weirui Chen, Xukai Li, Laisheng Li
{"title":"Catalytic Ozonation of Ciprofloxacin over Cerium Oxide Modified SBA-15 and Toxicity Assessment towards E. coli","authors":"Yiming Tang, Sush Ma, Weirui Chen, Xukai Li, Laisheng Li","doi":"10.26802/JAOTS.2017.0070","DOIUrl":"https://doi.org/10.26802/JAOTS.2017.0070","url":null,"abstract":"","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"69 1","pages":"159-169"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74331355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Present work investigated the degradation of phenol based on theoretical knowledge of bubble dynamic and experimental studies. Optimum parameters of theoretical knowledge such as initial concentration of phenol: 1.1 mole/L; concentration of additive: 2 g/L; liquid medium temperature: 35°C and pressure of liquid medium: 101325 Pa were considered for the experimental study. The degradation was further explored in the presence of zinc oxide (effect of particle size), hydrogen peroxide (effect on hydroxyl radical concentration), and sodium chloride (effect of a change in liquid properties) and its effect on degradation of phenol. The degradation of phenol increased in the presence catalyst such as 0.61±0.013 moles L-1 min-1 (hydrogen peroxide), 0.44±0.014 moles L-1 min-1 (zinc oxide), and 0.5±0.013 moles L-1 min-1 (sodium chloride) compare to the absence of catalyst 0.24±0.009 moles L-1 min-1. The results confirmed that maximum degradation of phenol obtains in the presence of hydrogen peroxide (cavitational yield: 15.9×10-5 mg/J, the rate constant: 4.8×l0-5 min-1, and TOC removal 28.5%). The presence of sodium chloride showed the considerable effect on degradation and TOC removal. Results confirmed that the degradation of phenol is driven by the hydroxyl radicals’ mechanism and increased with increase in the concentration of hydroxyl radicals. The degradation of phenol was highly dependent on the concentration of phenol near vicinity of the liquid-bubble interface.
{"title":"Mechanistic insight on the sonolytic degradation of phenol at interface and bulk using additives","authors":"S. B. Doltade, V. Gole","doi":"10.1515/jaots-2017-0013","DOIUrl":"https://doi.org/10.1515/jaots-2017-0013","url":null,"abstract":"Abstract Present work investigated the degradation of phenol based on theoretical knowledge of bubble dynamic and experimental studies. Optimum parameters of theoretical knowledge such as initial concentration of phenol: 1.1 mole/L; concentration of additive: 2 g/L; liquid medium temperature: 35°C and pressure of liquid medium: 101325 Pa were considered for the experimental study. The degradation was further explored in the presence of zinc oxide (effect of particle size), hydrogen peroxide (effect on hydroxyl radical concentration), and sodium chloride (effect of a change in liquid properties) and its effect on degradation of phenol. The degradation of phenol increased in the presence catalyst such as 0.61±0.013 moles L-1 min-1 (hydrogen peroxide), 0.44±0.014 moles L-1 min-1 (zinc oxide), and 0.5±0.013 moles L-1 min-1 (sodium chloride) compare to the absence of catalyst 0.24±0.009 moles L-1 min-1. The results confirmed that maximum degradation of phenol obtains in the presence of hydrogen peroxide (cavitational yield: 15.9×10-5 mg/J, the rate constant: 4.8×l0-5 min-1, and TOC removal 28.5%). The presence of sodium chloride showed the considerable effect on degradation and TOC removal. Results confirmed that the degradation of phenol is driven by the hydroxyl radicals’ mechanism and increased with increase in the concentration of hydroxyl radicals. The degradation of phenol was highly dependent on the concentration of phenol near vicinity of the liquid-bubble interface.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83610246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The dielectric barrier discharge (DBD) technique based cylindrical water falling film reactor was used for degrading an azo dye methyl orange (MO). The primary conditions affecting the degradation of methyl orange were systematically investigated. After 30 min plasma treatment, the degradation rate of MO was as high as 93.7% with gas velocity of 300 mL/min and the input energy of 72.5W. The influences of initial pH and conductivity of MO solution were also explored. The results indicated that the optimum pH value was 3.02 and 99.1% removal of MO was achieved within 30 min. Three catalytic systems DBD/Fe2+, DBD/PS (persulfate) and DBD/Fe2+/PS were examined to improve the degradation rate and the chemical oxygen demand (COD) removal rate of MO. The highest degradation rate (100%) and COD removal rate (72.4%) happened in DBD/Fe2+/PS system. The degradation products were analyzed by LC-MS in DBD system and DBD/Fe2+/PS system respectively, and then the possible degradation pathways of MO were proposed.
{"title":"Degradation of methyl orange using dielectric barrier discharge water falling film reactor","authors":"Baowei Wang, Meng Xu, Chunmei Chi, Chao Wang, Dajun Meng","doi":"10.1515/JAOTS-2017-0021","DOIUrl":"https://doi.org/10.1515/JAOTS-2017-0021","url":null,"abstract":"Abstract The dielectric barrier discharge (DBD) technique based cylindrical water falling film reactor was used for degrading an azo dye methyl orange (MO). The primary conditions affecting the degradation of methyl orange were systematically investigated. After 30 min plasma treatment, the degradation rate of MO was as high as 93.7% with gas velocity of 300 mL/min and the input energy of 72.5W. The influences of initial pH and conductivity of MO solution were also explored. The results indicated that the optimum pH value was 3.02 and 99.1% removal of MO was achieved within 30 min. Three catalytic systems DBD/Fe2+, DBD/PS (persulfate) and DBD/Fe2+/PS were examined to improve the degradation rate and the chemical oxygen demand (COD) removal rate of MO. The highest degradation rate (100%) and COD removal rate (72.4%) happened in DBD/Fe2+/PS system. The degradation products were analyzed by LC-MS in DBD system and DBD/Fe2+/PS system respectively, and then the possible degradation pathways of MO were proposed.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79192942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Sandoval, Gabriel Molina, Paul Vargas Jentzsch, Jady Pérez, F. Muñoz
Abstract The discharge of effluents from the textile industry into water bodies has a severe impact on water quality. The photocatalytic degradation of two typical azo dyes used in the textile industry (Acid Brown 83 and Direct Blue 1) was studied using the catalysts titanium dioxide (TiO2) and zinc oxide (ZnO) supported on polyethylene terephthalate (PET) and polystyrene (PS) substrates. For these dyes, degradation reactions using different initial pH values and supported catalysts were carried out. Adsorption isotherms were obtained and analyzed. No significant statistical differences were found between the use of PET and PS as substrates on degradation rate constants for both dyes. For Acid Brown 83 the highest rate constant was obtained at pH 2.5 using TiO2. For Direct Blue 1, the rate constant showed a significant difference only between the treatment at pH 2.5 using TiO2 and the treatment al pH 11.0 using ZnO. The adsorption of both dyes was higher on TiO2 than on ZnO.
摘要纺织工业废水排放到水体中对水质造成严重影响。以二氧化钛(TiO2)和氧化锌(ZnO)为催化剂，分别负载在聚对苯二甲酸乙二醇酯(PET)和聚苯乙烯(PS)基质上，研究了两种典型的纺织用偶氮染料(酸性棕83和直接蓝1)的光催化降解。对这些染料进行了不同初始pH值和负载型催化剂的降解反应。得到并分析了吸附等温线。使用PET和PS作为底物对两种染料的降解速率常数没有显著的统计学差异。在pH为2.5时，TiO2对酸性棕83的反应速率常数最高。对于Direct Blue 1，速率常数仅在pH为2.5的TiO2处理和pH为11.0的ZnO处理之间存在显著差异。两种染料在TiO2上的吸附均高于ZnO。
{"title":"Photocatalytic Degradation of Azo Dyes Over Semiconductors Supported on Polyethylene Terephthalate and Polystyrene Substrates","authors":"C. Sandoval, Gabriel Molina, Paul Vargas Jentzsch, Jady Pérez, F. Muñoz","doi":"10.1515/jaots-2017-0006","DOIUrl":"https://doi.org/10.1515/jaots-2017-0006","url":null,"abstract":"Abstract The discharge of effluents from the textile industry into water bodies has a severe impact on water quality. The photocatalytic degradation of two typical azo dyes used in the textile industry (Acid Brown 83 and Direct Blue 1) was studied using the catalysts titanium dioxide (TiO2) and zinc oxide (ZnO) supported on polyethylene terephthalate (PET) and polystyrene (PS) substrates. For these dyes, degradation reactions using different initial pH values and supported catalysts were carried out. Adsorption isotherms were obtained and analyzed. No significant statistical differences were found between the use of PET and PS as substrates on degradation rate constants for both dyes. For Acid Brown 83 the highest rate constant was obtained at pH 2.5 using TiO2. For Direct Blue 1, the rate constant showed a significant difference only between the treatment at pH 2.5 using TiO2 and the treatment al pH 11.0 using ZnO. The adsorption of both dyes was higher on TiO2 than on ZnO.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82351183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. D. Finashina, A. Kucherov, L. Kustov, Haiyong Cai, A. Krzywicki
Abstract The effect of CH4, C2H4, CO2, CH3OH, and (CH3S)2 on activity and selectivity of V-Mo-Nb-Te-Ox catalyst for ethane oxidative dehydrogenation is studied. Methane acts as a chemically inert diluent of the gas mixture. Presence of ethylene in feed stream does not have significant effect on the rate of ethane dehydrogenation but causes slight drop in ethylene selectivity. CO2 added is not involved in chemical transformations but suppress slightly ethane conversion and selectivity. Contamination of the gas stream with small amounts of either methanol or dimethyldisulfide (DMDS) does not reduce either activity or selectivity of the catalyst in ethane oxidative dehydrogenation.
{"title":"Effect of feedstock impurities on activity and selectivity of V-Mo-Nb-Te-Ox catalyst in ethane oxidative dehydrogenation","authors":"E. D. Finashina, A. Kucherov, L. Kustov, Haiyong Cai, A. Krzywicki","doi":"10.1515/jaots-2016-0165","DOIUrl":"https://doi.org/10.1515/jaots-2016-0165","url":null,"abstract":"Abstract The effect of CH4, C2H4, CO2, CH3OH, and (CH3S)2 on activity and selectivity of V-Mo-Nb-Te-Ox catalyst for ethane oxidative dehydrogenation is studied. Methane acts as a chemically inert diluent of the gas mixture. Presence of ethylene in feed stream does not have significant effect on the rate of ethane dehydrogenation but causes slight drop in ethylene selectivity. CO2 added is not involved in chemical transformations but suppress slightly ethane conversion and selectivity. Contamination of the gas stream with small amounts of either methanol or dimethyldisulfide (DMDS) does not reduce either activity or selectivity of the catalyst in ethane oxidative dehydrogenation.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81672075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Per- and polyfluoroalkyl substances (PFASs) have been recently listed as emerging contaminants (ECs) and persistent organic pollutants (POPs) due to their human and environmental health concerns. In the last 10 years, their detection and remediation have progressed significantly. Herein, we critically review recent developments in electrochemical advanced oxidation process (EAOP) towards their remediation. Particular attentions are paid to perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), which present the main concerns of PFASs at this time. Due to the persistence of those PFASs, other remediation approaches may experience difficulty in degrading them, whilst EAOP has demonstrated success. The fundamentals of EAOP are highlighted and the scale-up application is discussed regarding the future research directions.
{"title":"Electrochemical Advanced Oxidation Processes (EAOP) to degrade per- and polyfluoroalkyl substances (PFASs)","authors":"C. Fang, M. Megharaj, R. Naidu","doi":"10.1515/jaots-2017-0014","DOIUrl":"https://doi.org/10.1515/jaots-2017-0014","url":null,"abstract":"Abstract Per- and polyfluoroalkyl substances (PFASs) have been recently listed as emerging contaminants (ECs) and persistent organic pollutants (POPs) due to their human and environmental health concerns. In the last 10 years, their detection and remediation have progressed significantly. Herein, we critically review recent developments in electrochemical advanced oxidation process (EAOP) towards their remediation. Particular attentions are paid to perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), which present the main concerns of PFASs at this time. Due to the persistence of those PFASs, other remediation approaches may experience difficulty in degrading them, whilst EAOP has demonstrated success. The fundamentals of EAOP are highlighted and the scale-up application is discussed regarding the future research directions.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78304815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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