Laboratory desalination experiments with some algal toxins
Laycock, Maurice V.
Anderson, Donald M.
Easy, Dorothy J.
Quilliam, Michael A.
Al Jamali, Ebrahim
MetadataShow full item record
Over the last several decades, countries throughout the world have experienced an escalating and worrisome trend in the incidence of harmful algal blooms (HABs). A concern is that highly potent algal toxins might be retained in the treated water, posing a threat to human health. Seawater contaminated with saxitoxins, domoic acid, okadaic acid, and brevetoxins was desalinated using small (<100 mL capacity) reverse osmosis and distillation equipment. Analyses of desalinated water samples indicated efficient removal of the four toxins to greater than 99%, except brevetoxins for which some carryover was observed during distillation. Hypochlorite concentrations of 4 ppm or higher were sufficient to react with all of the saxitoxins, domoic acid and okadaic acid in the samples that contained initial toxin concentrations up to 1,250 ng.mL-1 . Brevetoxins appeared to be unaffected in experiments in which the toxins were exposed to up to 30 ppm hypochlorite in seawater at 35 °C for 60 min. These results and their implications in terms of desalination plant design and operation are discussed.
Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Desalination 293 (2012): 1-6, doi:10.1016/j.desal.2012.02.014.
Showing items related by title, author, creator and subject.
PSP toxin levels and plankton community composition and abundance in size-fractionated vertical profiles during spring/summer blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine and on Georges Bank, 2007, 2008, and 2010 : 1. Toxin levels Deeds, Jonathan R.; Petitpas, Christian M.; Shue, Vangie; White, Kevin D.; Keafer, Bruce A.; McGillicuddy, Dennis J.; Milligan, Peter J.; Anderson, Donald M.; Turner, Jefferson T. (Elsevier, 2013-04-12)As part of the NOAA ECOHAB funded Gulf of Maine Toxicity (GOMTOX)1 project, we determined Alexandrium fundyense abundance, paralytic shellfish poisoning (PSP) toxin composition, and concentration in quantitatively-sampled ...
Maldonado, Aileen; Lavado, Ramon; Knuston, Sean; Slattery, Marc; Ankisetty, Sridevi; Goldstone, Jared V.; Watanabe, Kayo; Hoh, Eunha; Gadepalli, Rama S.; Rimoldi, John M.; Ostrander, Gary K.; Schlenk, Daniel (Public Library of Science, 2016-05-03)Some species of butterflyfish have had preyed upon corals for millions of years, yet the mechanism of butterflyfish specialized coral feeding strategy remains poorly understood. Certain butterflyfish have the ability to ...
Gene discovery and expression profilng in the toxin-producing marine diatom, Pseudo-nitzschia multiseries (Hasle) Hasle Boissonneault, Katie Rose (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-09)Toxic algae are a growing concern in the marine environment. One unique marine diatom, Pseudo-nitzschia multiseries (Hasle) Hasle, produces the the neurotoxin domoic acid, which is the cause of amnesic shellfish poisoning. ...