School of Mechanical Engineering Seminar
Wednesday, March 28, 2017 at 14:00
Wolfson Building of Mechanical Engineering, Room 206
OZONE DEGRADATION OF TRACE ORGANIC COMPOUNDS
AND THE FORMATION OF ACTIVE TRANSFORMATION PRODUCTS:
THE CASE OF VENLAFAXINE
Alon Riani
MSc Student of Prof. Hadas Mamane and Prof. Dror Avisar
(School of mechanaical engineering, environmental engineering program, TAU)
Ozone is known for its efficient degradation of trace organic compounds; however, it also generates large number of potentially active transformation products. This work demonstrated ozone degradation of the popular anti-depressant drug venlafaxine in wastewater, and the formation of its main transformation product: N-oxide venlafaxine (an active compound).
In this study, carried out in the laboratory and in the field (pilot-scale), ozone degradation products of venlafaxine were first identified, kinetic parameters were measured for N-oxide venlafaxine (NOV), including its yield of formation (Ф~45%), its reaction rate with ozone (kNOV,O3 = 308 1/Ms) and OH• (kNOV,OH• = 5.3x109 1/Ms), and the wastewater’s oxidants exposure. The obtained kinetic data where subsequently used to generate a model to predict N-oxide concentration in wastewater containing venlafaxine during an ozone treatment.
