Removal of methyl orange using photoactivated titanium dioxide immobilized on granular activated carbon

Lam, Sze Mun (2007) Removal of methyl orange using photoactivated titanium dioxide immobilized on granular activated carbon. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Removal of Methyl orange (MeO) in aqueous solution using photo activated TiO₂immobilized on granular activated carbon (TiO₂/GAC) in the present of UV-A radiation was studied. The TiO₂/GAC was prepared through precipitation of titanium hyrdoxide from titanium tetraisopropoxide and followed by heat treatment. The removal of MeO was carried out in a 500-mL cylindrical photo-reactor. The results indicate that the TiO₂/GAC has higher reactivity for the removal of MeO in aqueous solution under compared to TiO₂(Pyrex) and GAC systems. The best experimental condition was obtained by 2-layered TiO₂/GACIUV-A system, where 74% of the MeO in aqueous solution ([MeO] = 1 x 10�� mol L�¹) was successfully removed. Study on the kinetic of removal of MeO solution in the TiO₂(Pyrex)/UV-A, GAC/UV-A and TiO₂/GAC/UV-A systems shows that the systems was conform to pseudo-first order reaction with the rate constant, k of the best system is equal to 0.0107 min�¹.

Item Type: Academic Exercise
Uncontrolled Keywords: Removal of Methyl orange, UV-A radiation, titanium tetraisopropoxide, heat treatment, reaction
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 11 Feb 2014 07:33
Last Modified: 11 Oct 2017 05:55
URI: http://eprints.ums.edu.my/id/eprint/8175

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