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 (Unpublished)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 |
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| Keyword: | Removal of Methyl orange, UV-A radiation, titanium tetraisopropoxide, heat treatment, reaction |
| Subjects: | Q Science > QD Chemistry |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 11 Feb 2014 15:33 |
| Last Modified: | 11 Oct 2017 13:55 |
| URI: | https://eprints.ums.edu.my/id/eprint/8175 |
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