{"title":"Rapid photocatalytic degradation of methylene blue, tartrazine and brilliant green dyes by high-flux UV irradiation photolysis reactor","authors":"R. Rehman, W. uz-Zaman, A. Abbas, L. Mitu","doi":"10.34049/bcc.51.3.4683","DOIUrl":null,"url":null,"abstract":"The aim of this work was to investigate the removal of dyes from wastewater by photocatalytic degradation using a modified assembly of photolysis reactor. It was more efficient and dye degradation occurred very fast. UV/Visible spectrophotometry was used to monitor the reaction. The degradation of dyes with different catalysts was compared and found to follow first-order kinetics. The optimal result for Methylene Blue was t(1/2)=4 min, k = 0.4471 min-1, R2 = 0.9650, for Tartrazine - t(1/2) = 1.2 min, k = 0.9723 min-1, R2 = 0.9980 and for Brilliant Green - t(1/2) = 0.8 min, k = 0.9716 min-1, R2 = 0.9938. So, it can be efficiently employed on a larger scale. Keywords: Methylene Blue, Tartrazine, Brilliant Green, Photolysis, Degradation.","PeriodicalId":9289,"journal":{"name":"Bulgarian Chemical Communications","volume":"27 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulgarian Chemical Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.34049/bcc.51.3.4683","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Chemistry","Score":null,"Total":0}
引用次数: 5
Abstract
The aim of this work was to investigate the removal of dyes from wastewater by photocatalytic degradation using a modified assembly of photolysis reactor. It was more efficient and dye degradation occurred very fast. UV/Visible spectrophotometry was used to monitor the reaction. The degradation of dyes with different catalysts was compared and found to follow first-order kinetics. The optimal result for Methylene Blue was t(1/2)=4 min, k = 0.4471 min-1, R2 = 0.9650, for Tartrazine - t(1/2) = 1.2 min, k = 0.9723 min-1, R2 = 0.9980 and for Brilliant Green - t(1/2) = 0.8 min, k = 0.9716 min-1, R2 = 0.9938. So, it can be efficiently employed on a larger scale. Keywords: Methylene Blue, Tartrazine, Brilliant Green, Photolysis, Degradation.
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