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It becomes oxidation resistant and anti-bio-degradable, which makes it difficult to be treated. The general aim of treatment is to remove COD and to decolor, which is more difficult. Color is the most important indicator to check whether the printing and dyeing wastewater treatment can meet the emission standards. With the traditional method of wastewater treatment to hydrophilic or water-soluble dye wastewater, the decoloring effect is not satisfactory. The biological decoloring is less effective, while the physical and chemical decoloring does cost much. This paper is to find a simple, economical as well as effective way of decoloring printing and dyeing wastewater. Photocatalytic oxidation can be done in an ordinary condition (normal temperature, atmospheric pressure), but with strong oxidizing ability, with a great speed and without secondary pollution. In the water treatment domain, the AOP technology is widely used in environmental protection. Currently TiO2 is used as the photocatalytic oxidation catalyst, with the ultraviolet ray as the light source, mostly in a man-made form. Its use is limited because of its large energy consumption and poor efficiency in the utilization of solar energy. This study uses the near ultraviolet ray as the light source, AgCl as the catalyst, to reveal the effects of the dye concentration, the amount of catalyst, pH, the different light sources on the decoloring rate of reactive brilliant red K-2BP dye wastewater. The results show that with the dye initial concentration of 50mg/L, the concentration of catalyst 1000mg/L, and pH=4.0, the decoloring rate of the reactive brilliant red K-2BP dye waste water reaches 72.1％. Under the best technological conditions as indicated by the theory, the application of this system to the actual dye waste water may result in more ideal results. On the basis of the discussion of the various factors that influence the decoloring of the reactive brilliant red K-2BP dye wastewater with near ultraviolet ray-AgCl system, a dynamic equation for the degradation of the reactive brilliant red K-2BP is established, to analyze the degradation mechanism, and the structural composition of some replaced aromatic compounds during the K-2BP degradation process, as well as the reaction intermediate products and final products, and thus to trace its degradation routes. AgCl as a catalyst is similar in the catalytic oxidation mechanism to TiO2, and the sunlight can be used as the light source, not just UV. This not only reduces the energy consumption, but also repeatedly uses AgCl. It opens a new way for the photocatalytic oxidation of degradation wastewater., authors=SUN Qijuan, authorsList=SUN Qijuan, authorCompany=Shaanxi Polytechnic Institute, Xianyang 712000, Shaanxi Province, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=TKA0We8otIUGB4EnfZz7aQ==, pdfFileSize=2013872, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242127563473097209, articleId=1242127562101559784, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=近紫外光-AgCl体系脱色处理活性艳红K-2BP染料废水, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=以近紫外光为光源，AgCl为催化剂，考查了染料初始浓度、催化剂用量、pH值、不同光源等因素对活性艳红K-2BP染料废水脱色的影响。结果表明，当染料初始浓度为50mg/L，催化剂浓度为1000mg/L，pH值为4.0时，活性艳红K-2BP模拟染料废水脱色率达到72.1％。在该工艺条件下，用于实际染料废水，脱色效果也很明显。在此基础上，建立了活性艳红K-2BP降解的动力学方程，分析了活性艳红K-2BP降解机制，确定了K-2BP降解过程中一些被取代的芳香化合物的结构组成以及反应的中间产物和最终产物，并由此推测出其降解路线。, authors=孙琪娟, authorsList=孙琪娟, authorCompany=陕西工业职业技术学院,陕西 咸阳 712000, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=xUdMlJfwnUa2VqNhJx+HEQ==, pdfFileSize=2013872, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1242127563074638321, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242127562101559784, language=CN, orderNo=1, 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近紫外光-AgCl体系脱色处理活性艳红K-2BP染料废水
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科技导报
| 研究论文 2011,29(17): 52-57
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科技导报
|研究论文
2011
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近紫外光-AgCl体系脱色处理活性艳红K-2BP染料废水
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孙琪娟
作者信息
陕西工业职业技术学院,陕西 咸阳 712000
Treatment for Decoloring Reactive Brilliant Red K-2BP Dye Wastewater By Near UV-AgCl
SUN Qijuan
Affiliations
Shaanxi Polytechnic Institute, Xianyang 712000, Shaanxi Province, China
The dye wasterwater has some unique features: high CODCr, high intensity of color, high salinity, hard to degradation, great changes in water quality and quantity and so on. It becomes oxidation resistant and anti-bio-degradable, which makes it difficult to be treated. The general aim of treatment is to remove COD and to decolor, which is more difficult. Color is the most important indicator to check whether the printing and dyeing wastewater treatment can meet the emission standards. With the traditional method of wastewater treatment to hydrophilic or water-soluble dye wastewater, the decoloring effect is not satisfactory. The biological decoloring is less effective, while the physical and chemical decoloring does cost much. This paper is to find a simple, economical as well as effective way of decoloring printing and dyeing wastewater. Photocatalytic oxidation can be done in an ordinary condition (normal temperature, atmospheric pressure), but with strong oxidizing ability, with a great speed and without secondary pollution. In the water treatment domain, the AOP technology is widely used in environmental protection. Currently TiO2 is used as the photocatalytic oxidation catalyst, with the ultraviolet ray as the light source, mostly in a man-made form. Its use is limited because of its large energy consumption and poor efficiency in the utilization of solar energy. This study uses the near ultraviolet ray as the light source, AgCl as the catalyst, to reveal the effects of the dye concentration, the amount of catalyst, pH, the different light sources on the decoloring rate of reactive brilliant red K-2BP dye wastewater. The results show that with the dye initial concentration of 50mg/L, the concentration of catalyst 1000mg/L, and pH=4.0, the decoloring rate of the reactive brilliant red K-2BP dye waste water reaches 72.1％. Under the best technological conditions as indicated by the theory, the application of this system to the actual dye waste water may result in more ideal results. On the basis of the discussion of the various factors that influence the decoloring of the reactive brilliant red K-2BP dye wastewater with near ultraviolet ray-AgCl system, a dynamic equation for the degradation of the reactive brilliant red K-2BP is established, to analyze the degradation mechanism, and the structural composition of some replaced aromatic compounds during the K-2BP degradation process, as well as the reaction intermediate products and final products, and thus to trace its degradation routes. AgCl as a catalyst is similar in the catalytic oxidation mechanism to TiO2, and the sunlight can be used as the light source, not just UV. This not only reduces the energy consumption, but also repeatedly uses AgCl. It opens a new way for the photocatalytic oxidation of degradation wastewater.
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