In:
Photochemistry and Photobiology, Wiley, Vol. 91, No. 5 ( 2015-09), p. 1142-1149
Abstract:
Advanced oxidation processes/technologies ( AOT ) that combine a semiconductor, such as titanium dioxide ( T i O 2 ), with a UV source have been used to eliminate microorganisms in various water treatment applications. To facilitate the applicability of this technique, the gain in efficiency from the semiconductor compared to the UV source alone with respect to different target organisms requires evaluation. The primary objective of this study was to determine the effects of T i O 2 and UV wavelength on a freshwater alga, P seudokirchneriella subcapitata and a marine alga, T etraselmis suecica . For each species, dose–response experiments were conducted to determine the median lethal dose ( LC 50 ) of the following treatments: UV light emitted with a peak of 254 nm, UV light emitted with a peak of 254 nm in the presence of T i O 2 and UV light emitted with a peak of 254 and 185 nm in the presence of T i O 2 . In both species, the presence of T i O 2 significantly increased mortality. Across all three treatments, P . subcapitata was more sensitive than T . suecica ; moreover, the addition of the 185 nm wavelength significantly increased cell mortality in P . subcapitata but not in T . suecica .
Type of Medium:
Online Resource
ISSN:
0031-8655
,
1751-1097
DOI:
10.1111/php.2015.91.issue-5
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2048860-9
SSG:
12
