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Photocatalytic Oxidation of Cyanide Ion in Aqueous TiO2 Suspension | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 19, Issue 3, 2008, Pages 31-38 | ||
| Author | ||
| Salah M. Aliwi | ||
| Abstract | ||
| The photocatalytic oxidation of CN- ion have been studied in two different types of TiO2 photocatalyst like Degussa P25 and Hombikat. The two types of photocatalyst are efficient on the oxidation of CN- ion but the Degussa P25 type is more photoactive than Hombikat under similar experimental conditions. The kinetic studies indicate that the photocatalytic oxidation process is first order, and the rates of photooxidation were measured under the optimum conditions used.The dependence of the cyanide photooxidation rate on different parameters were also studied; initial and catalyst concentrations.Langmuir-Hinshelwood equation used to determine the adsorption constant of CN ion on these two surfaces. According to the experimental results suggested the photooxidation mechanism. | ||
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