Photocatalytic degradation of turquoise blue dye using immobilized AC/TiO2: Optimization of process parameters and pilot plant investigation

• Main Authors: Gallo, Jurex C., Mariano, Martin B., Lucanas, Alton D., Ko, Michael B., Borja, Josephine Q., Hinode, H., Gallardo, Susan M.
• Format: text
• Published: Animo Repository 2015
• Subjects: Sewage—Purification; Water—Purification—Photocatalysis; Photocatalysis
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/1264
• Institution: De La Salle University

AC/TiO2 was synthesized via sol-gel method and characterized. Response Surface Methodology (RSM) based on Central Composite Design (CCD) was applied in optimization of process parameters in photocatalytic degradation of Turquoise blue dye (TBD) under UV light. The optimum conditions are 15.00 mg/L initial dye concentration, initial solution pH of 3.00, 3.00 g/L catalyst loading, recirculating flow rate of 100 ml/s and UV intensity of 2.50 mW/cm2. A 90.01% color removal of TBD and 86.4% color removal of textile wastewater with TBD under UV light were achieved while 38.5% color removal of TBD in textile wastewater was observed under visible light in 6-hour irradiation. In pilot plant investigation using a fixed-bed reactor, a 54.8% color removal of TBD in textile wastewater in 1.5 hours of solar irradiation was observed. © School of Engineering, Taylor’s University.