The Degradation Of Humic Substances Using Continuous Photocatalysis Systems

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dc.contributor.author Areerachakul, N. en_US
dc.contributor.author Vigneswaran, S. en_US
dc.contributor.author Kandasamy, J. K. en_US
dc.contributor.author Duangduen, C. en_US
dc.date.accessioned 2009-06-26T04:10:56Z
dc.date.available 2009-06-26T04:10:56Z
dc.date.issued 2007 en_US
dc.identifier 2007004445 en_US
dc.identifier.citation Areerachakul, N. et al. 2007 'The Degradation Of Humic Substances Using Continuous Photocatalysis Systems', Separation Science and Technology, vol. 43, no. 1, pp. 93-112. en_US
dc.identifier.issn 0149-6395 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/642
dc.description.abstract Photocatalytic oxidation is an emerging technology in water and wastewater treatment. Photocatalysis often leads to complete degradation of organic pollutants without the need for chemicals. This study investigated the degradation of humic substances in water using photocatalysis systems coupled with physio-chemical processes such as adsorption and/or flocculation. Dissolved Organic Carbon (DOC) removal of PAC-TiO2 was improved by a factor of two to three times compared with TiO2 alone. Solid Phase Micro Extraction (SPME)/Gas Chromatograph (GC) flame ionisation detector (FID) was used to investigate intermediates of photocatalytic oxidation in a batch reactor with TiO2 alone and with powder activated carbon (PAC) with TiO2. GC peaks showed that PAC-TiO2 adsorbed some by-products which were photo-resistant and prevented the reverse reaction that occurred when TiO2 was used alone. The two other types of photocatalytic reactors used were the continuous photocatalytic reactor and recirculated photocatalytic reactor. The results show that the recirculated reactor had the highest efficiency in removing organic matter in a short photo-oxidation (detention) time of less than 10 min. The use of PAC-TiO2 in recirculated continuous reactor resulted in 80% removal of organic matter even when it was operated for a short detention time and allowed the use of a smaller dose of TiO2. en_US
dc.publisher Marcel Dekker Inc en_US
dc.relation.isbasedon http//dx.doi.org/10.1080/01496390701749214 en_US
dc.title The Degradation Of Humic Substances Using Continuous Photocatalysis Systems en_US
dc.parent Separation Science and Technology en_US
dc.journal.volume 43 en_US
dc.journal.number 1 en_US
dc.publocation New York N.Y. en_US
dc.identifier.startpage 93 en_US
dc.identifier.endpage 112 en_US
dc.cauo.name Infrastructure and the Environment en_US


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