Degradation of Triclosan by TiO2 - UV Irradiation in Aqueous Solutions

作者：Constantin Lucian; Nitoi Ines; Cristea Ionut; Oancea Petruta; Orbeci Cristina; Nechifor Aurelia Cristina^*

来源：Revista de Chimie, 2015, 66(5): 597-600.

• triclosan
• photocatalysis
• TiO2
• anatase
• photo-dergradation

Triclosan (TCS) 5 chloro - 2 - (2, 4 - dichlorophenoxy) phenol is an antimicrobial agent widely used for personal care products. Due to TCS persistence and toxicity, advanced oxidation processes constitute nowadays an alternative to TCS degradation. The UV/TiO2 degradation of TCS was investigated in the following working conditions: pH domain = 5.3-8.7; initial pollutant concentration [TCS](0) = 1 - 13.5 mg/L; photocatalyst dose [TiO2](0) = 100 - 500 mg/L; irradiation time t = 30 - 180 min; air flow Q air = 50 L/h. The TCS degradation was found to respect the Langmuir - Hinshelwood model. The constant of the degradation rate and the equilibrium constant of TCS adsorption on TiO2 particles were calculated.

• 出版日期2015-5