Journal
HARMFUL ALGAE
Volume 39, Issue -, Pages 253-258Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hal.2014.08.006
Keywords
Cyanobacteria; Water treatment; Microcystin-LR; Cylindrospermopsis; Saxitoxin; Geosmin
Categories
Funding
- Australian Research Council [LP0883951]
- Melbourne Water
- SA Water
- Barwon Water
- Australian Research Council [LP0883951] Funding Source: Australian Research Council
Ask authors/readers for more resources
Cyanobacteria and their metabolites are recognised as serious water quality issues for water suppliers around the world. Water shortages not only increase the risk of the proliferation of cyanobacteria but also necessitate the development of more effective treatment regimes. Conventional water treatment processes are considered an effective initial barrier in removing cyanobacterial cells intact and without damage. However, the cells can be exposed to a range of pH conditions during these processes. The impact of various pH conditions typical of the water treatment processes was evaluated on common bloom species, Microcystis aeruginosa, Cylindrospermopsis raciborskii and Anabaena circinalis. By using cyanobacterial metabolite analysis and cell viability assays, it was shown that low pH stress (pH below 5), which can occur during coagulation upon the application of metal hydroxide coagulants, occurs quickly and results in considerable cell lysis and metabolite release. It is demonstrated that it is critical to keep the pH of water above 5 (locally) at all times in order to reduce the risk of water contamination with problem metabolites. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available