RT journal article
T1 Effect of the length of dark storage following ultraviolet irradiation of Tetraselmis suecica and its implications for ballast water management
A1 Romero Martínez, Leonardo
A1 Rivas Zaballos, Ignacio
A1 Moreno Andrés, Javier
A1 Moreno-Garrido, Ignacio
A1 Acevedo Merino, Asunción
A1 Nebot Sanz, Enrique
A2 Biología
A2 Tecnologías del Medio Ambiente
K1 Ballast water
K1 Ultraviolet disinfection
K1 Tetraselmis suecica
K1 Viability
K1 Photoreactivation
AB Meeting the recent biological standards established by the Ballast Water Management Convention requires the application of ballast water treatment systems; ultraviolet irradiation is a frequently used option. However, organisms can repair the damage caused by ultraviolet irradiation primarily with photo-repair mechanisms that are dependent on the availability of light. The objective of this study is to quantify the impact of dark storage following ultraviolet irradiation on the viability of the microalgae Tetraselmis suecica. Results showed that one day of dark storage after ultraviolet irradiation enhanced the inactivation rate by 50% with respect to the absence of dark storage and increased up to the 84% with five days of dark storage. These results are consistent with photorepair, mostly in the first two days, prevented in the dark. The dose required to inactivate a determined ratio of organisms was correlated with the length of the dark post-treatment according to an inverse proportional function. This correlation may help to optimize the operation of ultraviolet ballast water treatment systems. Further, the results show that growth assays can detect organisms that are capable of repair after treatment with UV.
PB Elsevier
SN 1879-1026
YR 2020
FD 2020
LK http://hdl.handle.net/10498/34455
UL http://hdl.handle.net/10498/34455
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026