Effects of operational parameters on decolorisation of C.I. Reactive Black 5 in UV/TiO2 system
This study utilises a UV/TiO2 system to decolorise C.I. Reactive Black 5 (RB5). The effects of TiO2 dosage, pH, RB5 concentration and light power on the decolorisation efficiency using the UV/TiO2 system were determined. IO4− was employed as an oxidant to increase the photodegradation efficiency of...
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| Veröffentlicht in: | Water science and technology 2011-03, Vol.63 (5), p.1032-1036 |
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| creator | Wu, C. H. Kuo, C. Y. Hong, P. K. A. |
| description | This study utilises a UV/TiO2 system to decolorise C.I. Reactive Black 5 (RB5). The effects of TiO2 dosage, pH, RB5 concentration and light power on the decolorisation efficiency using the UV/TiO2 system were determined. IO4− was employed as an oxidant to increase the photodegradation efficiency of UV/TiO2. The decolorisation rate constants (k) of RB5 in the UV/TiO2 system are consistent with pseudo-first-order kinetics. The k values of 0.1, 0.5, 1.0 and 2.0 g/l TiO2 were 0.53, 0.52, 0.69 and 0.68 h−1, respectively. The rate constant increases with decreasing pH from 10 to 4. The decolorisation rate approximates linear relationship with RB5 concentration, as given by k=1.05[1/RB5]0.98; it varies nonlinearly with light power, as given by k=0.178[power]0.63. The experimental results reveal that the rate of decolorisation obtained using UV/TiO2/IO4− exceeds that obtained using UV/TiO2. |
| doi_str_mv | 10.2166/wst.2011.286 |
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Reactive Black 5 in UV/TiO2 system</title><source>EZB-FREE-00999 freely available EZB journals</source><creator>Wu, C. H. ; Kuo, C. Y. ; Hong, P. K. A.</creator><creatorcontrib>Wu, C. H. ; Kuo, C. Y. ; Hong, P. K. A.</creatorcontrib><description>This study utilises a UV/TiO2 system to decolorise C.I. Reactive Black 5 (RB5). The effects of TiO2 dosage, pH, RB5 concentration and light power on the decolorisation efficiency using the UV/TiO2 system were determined. IO4− was employed as an oxidant to increase the photodegradation efficiency of UV/TiO2. The decolorisation rate constants (k) of RB5 in the UV/TiO2 system are consistent with pseudo-first-order kinetics. The k values of 0.1, 0.5, 1.0 and 2.0 g/l TiO2 were 0.53, 0.52, 0.69 and 0.68 h−1, respectively. The rate constant increases with decreasing pH from 10 to 4. The decolorisation rate approximates linear relationship with RB5 concentration, as given by k=1.05[1/RB5]0.98; it varies nonlinearly with light power, as given by k=0.178[power]0.63. The experimental results reveal that the rate of decolorisation obtained using UV/TiO2/IO4− exceeds that obtained using UV/TiO2.</description><identifier>ISSN: 0273-1223</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2011.286</identifier><language>eng</language><publisher>London: IWA Publishing</publisher><subject>CI Reactive Black 5 ; Color removal ; Constants ; Decoloring ; Dosage ; Kinetics ; Oxidation ; Oxidizing agents ; pH effects ; Photodegradation ; Power efficiency ; Rate constants ; Reaction kinetics ; Titanium dioxide ; Ultraviolet radiation</subject><ispartof>Water science and technology, 2011-03, Vol.63 (5), p.1032-1036</ispartof><rights>Copyright IWA Publishing Mar 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c263t-5024a497b5a365f78c26ce523facaa18e2153be320fbeeb225082f7f41e806533</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids></links><search><creatorcontrib>Wu, C. H.</creatorcontrib><creatorcontrib>Kuo, C. Y.</creatorcontrib><creatorcontrib>Hong, P. K. A.</creatorcontrib><title>Effects of operational parameters on decolorisation of C.I. Reactive Black 5 in UV/TiO2 system</title><title>Water science and technology</title><description>This study utilises a UV/TiO2 system to decolorise C.I. Reactive Black 5 (RB5). The effects of TiO2 dosage, pH, RB5 concentration and light power on the decolorisation efficiency using the UV/TiO2 system were determined. IO4− was employed as an oxidant to increase the photodegradation efficiency of UV/TiO2. The decolorisation rate constants (k) of RB5 in the UV/TiO2 system are consistent with pseudo-first-order kinetics. The k values of 0.1, 0.5, 1.0 and 2.0 g/l TiO2 were 0.53, 0.52, 0.69 and 0.68 h−1, respectively. The rate constant increases with decreasing pH from 10 to 4. The decolorisation rate approximates linear relationship with RB5 concentration, as given by k=1.05[1/RB5]0.98; it varies nonlinearly with light power, as given by k=0.178[power]0.63. The experimental results reveal that the rate of decolorisation obtained using UV/TiO2/IO4− exceeds that obtained using UV/TiO2.</description><subject>CI Reactive Black 5</subject><subject>Color removal</subject><subject>Constants</subject><subject>Decoloring</subject><subject>Dosage</subject><subject>Kinetics</subject><subject>Oxidation</subject><subject>Oxidizing agents</subject><subject>pH effects</subject><subject>Photodegradation</subject><subject>Power efficiency</subject><subject>Rate constants</subject><subject>Reaction kinetics</subject><subject>Titanium dioxide</subject><subject>Ultraviolet radiation</subject><issn>0273-1223</issn><issn>1996-9732</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNotkE1LAzEYhIMouFZv_oCAV3ebvNnsx1FL1UKhIK1HQza-ga3bZk1Spf_eXetpYGYYmIeQW84y4EUx_QkxA8Z5BlVxRhJe10ValwLOScKgFCkHEJfkKoQtY6wUOUvI-9xaNDFQZ6nr0evYur3uaK-93mFEPyR7-oHGdc634S8eu7NskdFX1Ca230gfO20-qaTtnm7eput2BTQcQ8TdNbmwugt4868Tsnmar2cv6XL1vJg9LFMDhYipZJDrvC4bqUUhbVkNtkEJwmqjNa8QuBQNCmC2QWwAJKvAljbnWLFCCjEhd6fd3ruvA4aotu7ghyNB8ToXVcnG7xNyf2oZ70LwaFXv2532R8WZGgmqgaAaCaqBoPgFX9tipQ</recordid><startdate>20110301</startdate><enddate>20110301</enddate><creator>Wu, C. 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Reactive Black 5 in UV/TiO2 system</title><author>Wu, C. H. ; Kuo, C. Y. ; Hong, P. K. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c263t-5024a497b5a365f78c26ce523facaa18e2153be320fbeeb225082f7f41e806533</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>CI Reactive Black 5</topic><topic>Color removal</topic><topic>Constants</topic><topic>Decoloring</topic><topic>Dosage</topic><topic>Kinetics</topic><topic>Oxidation</topic><topic>Oxidizing agents</topic><topic>pH effects</topic><topic>Photodegradation</topic><topic>Power efficiency</topic><topic>Rate constants</topic><topic>Reaction kinetics</topic><topic>Titanium dioxide</topic><topic>Ultraviolet radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, C. H.</creatorcontrib><creatorcontrib>Kuo, C. Y.</creatorcontrib><creatorcontrib>Hong, P. K. A.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Engineering Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><jtitle>Water science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, C. H.</au><au>Kuo, C. Y.</au><au>Hong, P. K. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of operational parameters on decolorisation of C.I. Reactive Black 5 in UV/TiO2 system</atitle><jtitle>Water science and technology</jtitle><date>2011-03-01</date><risdate>2011</risdate><volume>63</volume><issue>5</issue><spage>1032</spage><epage>1036</epage><pages>1032-1036</pages><issn>0273-1223</issn><eissn>1996-9732</eissn><abstract>This study utilises a UV/TiO2 system to decolorise C.I. Reactive Black 5 (RB5). The effects of TiO2 dosage, pH, RB5 concentration and light power on the decolorisation efficiency using the UV/TiO2 system were determined. IO4− was employed as an oxidant to increase the photodegradation efficiency of UV/TiO2. The decolorisation rate constants (k) of RB5 in the UV/TiO2 system are consistent with pseudo-first-order kinetics. The k values of 0.1, 0.5, 1.0 and 2.0 g/l TiO2 were 0.53, 0.52, 0.69 and 0.68 h−1, respectively. The rate constant increases with decreasing pH from 10 to 4. The decolorisation rate approximates linear relationship with RB5 concentration, as given by k=1.05[1/RB5]0.98; it varies nonlinearly with light power, as given by k=0.178[power]0.63. The experimental results reveal that the rate of decolorisation obtained using UV/TiO2/IO4− exceeds that obtained using UV/TiO2.</abstract><cop>London</cop><pub>IWA Publishing</pub><doi>10.2166/wst.2011.286</doi><tpages>5</tpages></addata></record> |
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| subjects | CI Reactive Black 5 Color removal Constants Decoloring Dosage Kinetics Oxidation Oxidizing agents pH effects Photodegradation Power efficiency Rate constants Reaction kinetics Titanium dioxide Ultraviolet radiation |
| title | Effects of operational parameters on decolorisation of C.I. Reactive Black 5 in UV/TiO2 system |
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