SCHNEIDER, Marcel, Raphael RATAJ, Juergen F. KOLB and Luděk BLÁHA. Cylindrospermopsin is effectively degraded in water by pulsed corona-like and dielectric barrier discharges. Environmental Pollution. Oxford: Elsevier, 2020, vol. 266, NOV 2020, p. 1-9. ISSN 0269-7491. Available from: https://dx.doi.org/10.1016/j.envpol.2020.115423.
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Original name Cylindrospermopsin is effectively degraded in water by pulsed corona-like and dielectric barrier discharges
Authors SCHNEIDER, Marcel (276 Germany, guarantor, belonging to the institution), Raphael RATAJ (276 Germany), Juergen F. KOLB (276 Germany) and Luděk BLÁHA (203 Czech Republic, belonging to the institution).
Edition Environmental Pollution, Oxford, Elsevier, 2020, 0269-7491.
Other information
Original language English
Type of outcome Article in a journal
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14310/20:00117216
Organization Přírodovědecká fakulta – Repository – Repository
Doi http://dx.doi.org/10.1016/j.envpol.2020.115423
UT WoS 000572959400012
Keywords in English Cyanotoxin; CYN; DBD; Drinking water treatment; Non-thermal plasma
Links EF17_043/0009632, research and development project. LM2018121, research and development project. 722493, interní kód Repo. 857560, interní kód Repo.
Changed by Changed by: RNDr. Daniel Jakubík, učo 139797. Changed: 25/1/2022 14:11.
Abstract
Cylindrospermopsin (CYN) is an important cyanobacterial toxin posing a major threat to surface waters during cyanobacterial blooms. Hence, methods for cyanotoxin removal are required to confront seasonal or local incidences to sustain the safety of potable water reservoirs. Non-thermal plasmas provide the possibility for an environmentally benign treatment which can be adapted to specific concentrations and environmental conditions without the need of additional chemicals. We therefore investigated the potential of two different non-thermal plasma approaches for CYN degradation, operated either in a water mist, i.e. in air, or submerged in water. A degradation efficacy of 0.03 +/- 0.00 g kWh(-1) L-1 was found for a dielectric barrier discharge (DBD) operated in air, while a submerged pulsed corona-like discharge resulted in an efficacy of 0.24 +/- 0.02 g kWh(-1) L-1. CYN degradation followed a pseudo zeroth order or pseudo first order reaction kinetic, respectively. Treatment efficacy of the corona-like discharge submerged in water increased with pH values of the initial solution changing from 5.0 to 7.5. Notably, a pH-depending residual oxidative effect was observed for the submerged discharge, resulting in ongoing CYN degradation, even without further plasma treatment. In this case hydroxyl radicals were identified as the dominant oxidants of CYN at acidic pH values. In comparison, degradation by the DBD could be related primarily to the generation of ozone.
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