TiO2 nanoparticles on calcined sewage sludge (TiO2/sludge) were prepared by the sol-gel method and were fully characterized. The photocatalytic efficiency of TiO2/sludge was evaluated by tartrazine dye degradation by halide lamp. TiO2/sludge exhibited a high photocatalytic oxidation efficiency (more than 90%) of tartrazine compared with naked TiO2 (less than 20%) due to the synergy effect of sewage sludge. The optimization of experimental conditions was 0.5 g/l TiO2/Sludge, pH 8 with 50 mg/l tartrazine dye. The addition of sewage sludge to TiO2 improves the efficiency of dye mineralization. The prepared catalyst showed easier separation and effective reuse.
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Jamil et al. (2016) studied this question.
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