title: Evaluation of a UV-light emitting diodes unit for the removal of micropollutants in water for low energy advanced oxidation processes.
abstract: There is growing interest in using light emitting diodes (LEDs) as alternative to traditional mercury lamps for the removal of micropollutants by advanced oxidation processes due to their low energy consumption and potential for high efficiency and long lifetime. This study investigates the penetration and coverage of the light emitted by LEDs in order to build an optimised LED collimated beam apparatus. From the experimental data, cost analysis was conducted in order to identify when LEDs will become economically viable. It was observed that if their development follows the predictions, LEDs should be a viable alternative to traditional lamps within 7yr for both UV/H2O2 and UV/TiO2 processes. However, parameters such as wall plug efficiency and input power need to improve for LEDs to become competitive.
authors.affiliation: Cranfield Water Science Institute, Department of Environmental Science and Technology, Cranfield University, Bedfordshire MK43 0AL, UK.
authors.forename: Olivier
authors.initials: O
authors.lastname: Autin
authors.forename: Christophe
authors.initials: C
authors.lastname: Romelot
authors.forename: Lena
authors.initials: L
authors.lastname: Rust
authors.forename: Julie
authors.initials: J
authors.lastname: Hart
authors.forename: Peter
authors.initials: P
authors.lastname: Jarvis
authors.forename: Jitka
authors.initials: J
authors.lastname: MacAdam
authors.forename: Simon A
authors.initials: SA
authors.lastname: Parsons
authors.forename: Bruce
authors.initials: B
authors.lastname: Jefferson
mesh_terms: D000079:Acetaldehyde / Q000031:analogs & derivatives* / Q000302:isolation & purification; D004867:Equipment Design; D010084:Oxidation-Reduction; D010782:Photolysis; D014466:Ultraviolet Rays; D014867:Water / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000191:economics / Q000295:instrumentation*
chemical_list: D014874:Water Pollutants, Chemical; D014867:Water; C002935:metaldehyde; D000079:Acetaldehyde