Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes
Ship-borne ballast water contributes significantly to the transfer of non-indigenous species across aquatic environments. To reduce the risk of bio-invasion, ballast water should be treated before discharge. In this study, the efficiencies of several conventional and advanced oxidation processes wer...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/102896 http://hdl.handle.net/10220/24297 |
| _version_ | 1811688884835188736 |
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| author | Yang, Zhishan Jiang, Wenju Zhang, Yi Lim, Tuti Mariana |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Yang, Zhishan Jiang, Wenju Zhang, Yi Lim, Tuti Mariana |
| author_sort | Yang, Zhishan |
| collection | NTU |
| description | Ship-borne ballast water contributes significantly to the transfer of non-indigenous species across aquatic environments. To reduce the risk of bio-invasion, ballast water should be treated before discharge. In this study, the efficiencies of several conventional and advanced oxidation processes were investigated for potential ballast water treatment, using a marine dinoflagellate species, Scripsiella trochoidea, as the indicator organism. A stable and consistent culture was obtained and treated by ultraviolet (UV) light, ozone (O3), hydrogen peroxide (H2O2), and their various combinations. UV apparently inactivated the cells after only 10 s of irradiation, but subsequently photo-reactivation of the cells was observed for all methods involving UV. O3 exhibited 100% inactivation efficiency after 5 min treatment, while H2O2 only achieved maximum 80% inactivation in the same duration. Combined methods, e.g. UV/O3 and UV/H2O2, were found to inhibit photo-reactivation and improve treatment efficiency to some degree, indicating the effectiveness of using combined treatment processes. The total residual oxidant (TRO) levels of the methods were determined, and the results indicated that UV and O3 generated the lowest and highest TRO, respectively. The synergic effect of combined processes on TRO generation was found to be insignificant, and thus UV/O3 was recommended as a potentially suitable treatment process for ballast water. |
| first_indexed | 2024-10-01T05:39:18Z |
| format | Journal Article |
| id | ntu-10356/102896 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:39:18Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1028962020-03-07T11:43:33Z Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes Yang, Zhishan Jiang, Wenju Zhang, Yi Lim, Tuti Mariana School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering::Water treatment Ship-borne ballast water contributes significantly to the transfer of non-indigenous species across aquatic environments. To reduce the risk of bio-invasion, ballast water should be treated before discharge. In this study, the efficiencies of several conventional and advanced oxidation processes were investigated for potential ballast water treatment, using a marine dinoflagellate species, Scripsiella trochoidea, as the indicator organism. A stable and consistent culture was obtained and treated by ultraviolet (UV) light, ozone (O3), hydrogen peroxide (H2O2), and their various combinations. UV apparently inactivated the cells after only 10 s of irradiation, but subsequently photo-reactivation of the cells was observed for all methods involving UV. O3 exhibited 100% inactivation efficiency after 5 min treatment, while H2O2 only achieved maximum 80% inactivation in the same duration. Combined methods, e.g. UV/O3 and UV/H2O2, were found to inhibit photo-reactivation and improve treatment efficiency to some degree, indicating the effectiveness of using combined treatment processes. The total residual oxidant (TRO) levels of the methods were determined, and the results indicated that UV and O3 generated the lowest and highest TRO, respectively. The synergic effect of combined processes on TRO generation was found to be insignificant, and thus UV/O3 was recommended as a potentially suitable treatment process for ballast water. Accepted version 2014-12-03T06:38:57Z 2019-12-06T21:01:53Z 2014-12-03T06:38:57Z 2019-12-06T21:01:53Z 2014 2014 Journal Article Yang, Z., Jiang, W., Zhang, Y., & Lim, T. (2014). Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes. Environmental technology, 1-10. 0959-3330 https://hdl.handle.net/10356/102896 http://hdl.handle.net/10220/24297 10.1080/09593330.2014.960478 en Environmental technology © 2014 Taylor & Francis. This is the author created version of a work that has been peer reviewed and accepted for publication by Environmental Technology, Taylor & Francis. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [Article DOI: http://dx.doi.org/10.1080/09593330.2014.960478]. 33 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Environmental engineering::Water treatment Yang, Zhishan Jiang, Wenju Zhang, Yi Lim, Tuti Mariana Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| title | Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| title_full | Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| title_fullStr | Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| title_full_unstemmed | Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| title_short | Inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| title_sort | inactivation of dinoflagellate scripsiella trochoidea in synthetic ballast water by advanced oxidation processes |
| topic | DRNTU::Engineering::Environmental engineering::Water treatment |
| url | https://hdl.handle.net/10356/102896 http://hdl.handle.net/10220/24297 |
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