TY  - JOUR
A1  - Mehling, Simon
A1  - Schnabel, Tobias
A1  - Londong, Jörg
T1  - Photocatalytic ozonation in an immersion rotary body reactor for the removal of micro-pollutants from the effluent of wastewater treatment plants
JF  - Water Science & Technology
N2  - Carrier-bound titanium dioxide catalysts were used in a photocatalytic ozonation reactor for the degradation of micro-pollutants in real wastewater. A photocatalytic immersion rotary body reactor with a 36-cm disk diameter was used, and was irradiated using UV-A light-emitting diodes. The rotating disks were covered with catalysts based on stainless steel grids coated with titanium dioxide. The dosing of ozone was carried out through the liquid phase via an external enrichment and a supply system transverse to the flow direction. The influence of irradiation power and ozone dose on the degradation rate for photocatalytic ozonation was investigated. In addition, the performance of the individual processes photocatalysis and ozonation were studied. The degradation kinetics of the parent compounds were determined using liquid chromatography tandem mass spectrometry. First-order kinetics were determined for photocatalysis and photocatalytic ozonation. A maximum reaction rate of the reactor was determined, which could be achieved by both photocatalysis and photocatalytic ozonation. At a dosage of 0.4 mg /mg DOC, the maximum reaction rate could be achieved using 75% of the irradiation power used for sole photocatalysis, allowing increases in the energetic efficiency of photocatalytic wastewater treatment processes. The process of photocatalytic ozonation is suitable to remove a wide spectrum of micro-pollutants from wastewater.
KW  - Abwasserreinigung
KW  - Fotokatalyse
KW  - Mikroverunreinigungen
KW  - anthropogenic micro-pollutants
KW  - photocatalysis
KW  - photocatalytic ozonation
KW  - wastewater treatment
KW  - titan dioxide
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20220209-45865
UR  - https://iwaponline.com/wst/article/85/1/535/85800/Photocatalytic-ozonation-in-an-immersion-rotary
VL  - 2022
IS  - volume 85, issue 1
SP  - 535
EP  - 548
PB  - IWA Publishing
CY  - London
ER  -