Adsorption and Photocatalysis Kinetics of Herbicide onto Titanium Oxide and Powdered Activated Carbon

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Show simple item record Kim, Seoung-Hyun en_US Shon, Hokyong en_US Vigneswaran, Saravanamuth en_US Ngo, Huu Hao en_US
dc.contributor.editor en_US 2010-05-28T09:48:30Z 2010-05-28T09:48:30Z 2008 en_US
dc.identifier 2007005329 en_US
dc.identifier.citation Kim Seoung-Hyun et al. 2008, 'Adsorption and Photocatalysis Kinetics of Herbicide onto Titanium Oxide and Powdered Activated Carbon', Elsevier Inc, vol. 58, no. 3, pp. 335-342. en_US
dc.identifier.issn 1383-5866 en_US
dc.identifier.other C1 en_US
dc.description.abstract The adsorption and photocatalysis kinetics of metsulfuron-methyl (MM) onto titanium oxide (TiO2) and powdered activated carbon (PAC) were studied at varying adsorbent amount and MM concentration. The overall mass transfer in adsorption was estimated from concentration decay curves obtained in the batch adsorber. The maximum adsorption capacity decreased with increasing adsorbent amount in TiO2 adsorption. The adsorption isotherms of MM could be plotted using the Langmuir isotherm model with a reasonable degree of accuracy having higher r2 values rather than Freundlich isotherm model. Linear driving force approximation (LDFA) kinetic equation with Langmuir adsorption isotherm model was successfully applied to predict the adsorption kinetics data in various concentrations of MM in photobatch reactor. The estimated mass transfer coefficient was used to be 3.0 ? 10-5, 5.5 ? 10-5, 9.1 ? 10-5 m/s in PAC adsorption and 2.0 ? 10-5, 1.1 ? 10-5, 9.0 ? 10-6 m/s in TiO2 adsorption for a different MM concentration of 20, 50 and 70 mg/L, respectively. Photocatalysis kinetics was same with TiO2 of 0.2 g/L regardless of TiO2 amounts and the MM degradation kinetics was enhanced by TiO2 catalysis rather than only UV light degradation. Among the photocatalysis kinetics model with first-order, second-order and Langmuir?Hinshelwood (L?H) model, a second-order kinetic model was found to well present the experimental data of MM by TiO2 catalyst for the range of various TiO2 amounts and MM concentration studied. en_US
dc.language en_US
dc.publisher Elsevier Inc en_US
dc.relation.hasversion Accepted manuscript version en_US
dc.relation.isbasedon en_US
dc.rights NOTICE: this is the author’s version of a work that was accepted for publication in Separation and Purification Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Separation and Purification Technology, Volume 58, Issue 3, 15 January 2008, Pages 335–342 DOI: en_US
dc.title Adsorption and Photocatalysis Kinetics of Herbicide onto Titanium Oxide and Powdered Activated Carbon en_US
dc.parent Separation and Purification Technology en_US
dc.journal.volume 58 en_US
dc.journal.number 3 en_US
dc.publocation USA en_US
dc.identifier.startpage 335 en_US
dc.identifier.endpage 342 en_US FEIT.School of Elec, Mech and Mechatronic Systems en_US
dc.conference Verified OK en_US
dc.for 090400 en_US
dc.personcode 0000043078 en_US
dc.personcode 890265 en_US
dc.personcode 995130 en_US
dc.personcode 900451 en_US
dc.percentage 100 en_US Chemical Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Photocatalysis; Adsorption; Powdered activated carbon; Kinetics; Titanium oxide; Herbicide; Metsulfuron-methyl en_US
dc.staffid en_US
dc.staffid 900451 en_US

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