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Improvement of ballast water disinfection using a photocatalytic ( UV ‐C + TiO 2 ) flow‐through reactor for saltwater treatment
Author(s) -
RomeroMartínez Leonardo,
MorenoAndrés Javier,
AcevedoMerino Asunción,
Nebot Enrique
Publication year - 2014
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4385
Subject(s) - photocatalysis , ballast , ultraviolet , water disinfection , ultraviolet light , water treatment , ultraviolet radiation , environmental science , pulp and paper industry , materials science , environmental engineering , waste management , chemistry , photochemistry , radiochemistry , catalysis , optoelectronics , engineering , electrical engineering , biochemistry
BACKGROUND Ultraviolet disinfection systems used for treating ballast water have several strict requirements such as short exposure time or high disinfection efficacy. Disinfection can be enhanced by a photocatalytic system triggered by ultraviolet light, leading to a reduction in the exposure time necessary and thus a general improvement in the treatment. The use of laboratory disinfection equipment and data modeling enabled determination of the expected treatment optimization. RESULTS Photocatalysis enhanced ultraviolet treatment, reducing dose requirements by up to 70%, and was particularly effective on the most resistant organism. Treatment optimization was also observed in saltwater conditions. CONCLUSION Photocatalytic treatment may speed up ballasting and deballasting processes, since a lower ultraviolet dose is required. © 2014 Society of Chemical Industry