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Coupling Adsorption-Photocatalytic Degradation of Methylene Blue and Maxilon Red.

ABSTRACT: The MB and MR removal process by two mechanisms of adsorption using rice straw (absence of UV light) and photodegradation on TiO₂ surfaces was investigated. MB and MR removal efficiency were further intensified upon the sequential operation of adsorption followed by photocatalytic degradation over TiO₂ under visible light irradiation. The TiO₂ was used to remove methylene blue (MB) and Maxilon Red (MR) dye from aqueous media by continuous mode at 25 ± 2 °C, at pH 6.8 ± 0.2. Photo-illumination study revealed 75.81 and 65.51% MB and MR removal with the dose of 1 g/L TiO₂ with an initial concentration of 5 mg/L within 120 min. This study can be deemed of potential applications for the removal of MB and MR dyes on an industrial level using the synergistic adsorption-photocatalytic oxidation approach. A probable photodegradation mechanism was proposed.

SUBMITTER: Farouq R

PROVIDER: S-EPMC9270313 | biostudies-literature |

REPOSITORIES: biostudies-literature

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