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Cold plasma oxidation of harmful algae and associated metabolite BMAA toxin in aqueous suspension
Author(s) -
Nisol Bernard,
Watson Sean,
Leblanc Yves,
Moradinejad Saber,
Wertheimer Michael R.,
Zamyadi Arash
Publication year - 2019
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201800137
Subject(s) - toxin , aqueous solution , algae , cyanobacteria , chemistry , oxygen , environmental chemistry , algal bloom , suspension (topology) , reactive oxygen species , plasma , botany , biology , organic chemistry , biochemistry , nutrient , genetics , mathematics , physics , phytoplankton , quantum mechanics , homotopy , bacteria , pure mathematics
We report experiments in which reactive oxygen species (ROS) from a 20 kHz HV discharge in Ar/O 2 (90/10) gas mixture at atmospheric pressure were directly bubbled into highly concentrated aqueous suspensions of cyanobacteria Dolichospermum , green algae Scenedesmus and BMAA toxin, simulating extreme algal blooms. It has been found that even quite short treatment durations, up to 6 min, could greatly reduce the numbers of viable cells and completely destroy the BMAA toxin. Perhaps even more important, “plasma‐activated water” (PAW) was found to continue its effectiveness after 24 h, even 4 days after terminating the discharge.