Document Type: apj
Department of Environment, Islamic Azad University, Tehran West branch, Tehran, Iran.
Department of Environmental Engineering, Parand Branch, Islamic Azad University, Parand, Iran
Textile industries are the major industries which mainly use different dyes. In this industries estimated that 15 % of dyes are lost in wastewater during manufacturing and dying process. In this study, the photocatalytic degradation of Yellow Acid-36 dye in the presence of UV irradiation intensity has been investigated. At this experiment Synthetic solution was made from Yellow Acid-36 dye and we used TiO2 p-25 as a catalyst. The influence of various operation parameters, such as initial dye concentration, solution pH, time of contact, catalyst dosage and UV irradiation intensity on the degradation process was examined and optimized conditions for maximum degradation was determined. The result showed that the most dye degradation efficiency was in low pH solution.
In 100 g/m2 Tio2 concentration, pH=3, contact time= 105 min, irradiation intensity 30 W and dye concentration: 5mg/l , dye degradation percentage was 97.6 and this method was effective in removal of Yellow Acid 36.