This study presents a novel technique to inactivate coccidian oocysts in an aqueous solution. The technique consists of treating the contaminated liquid by using an atmospher- ic-pressure air dielectric barrier discharge (DBD) plasma in contact with it. Many experiments in several operating conditions were performed. The discharge was supplied by sinusoidal and nanosecond-pulsed voltages with a constant average power of ~7 W in both cases. Biological effects due to the plasma were investigated by performing tests with increasing treatment time. A sudden ~40% drop in the number of survived oocysts was reached in 4 min and a two-fold reduction was detected after 12 min of exposure. No significant differences in the biocidal efficacy were detected between the AC-driven and the nanosecond-pulsed discharge. Chi-squared statistical analysis on the treated samples showed significant statistical difference (with a statistical significance P value parameter less than 0.01) and nonrandomness warranty of the results, opening interesting scenarios for fimire developments.
Titolo: | Inactivation of eimeria Oocysts in aqueous solution by a dielectric barrier discharge plasma in contact with liquid |
Autore/i: | Neretti, G.; Morandi, B.; Taglioli, M.; Poglayen, G.; Galuppi, R.; Tosi, G.; Borghi, C. A. |
Autore/i Unibo: | |
Anno: | 2018 |
Rivista: | |
Digital Object Identifier (DOI): | 10.1615/PlasmaMed.2018024890 |
Abstract: | This study presents a novel technique to inactivate coccidian oocysts in an aqueous solution. The technique consists of treating the contaminated liquid by using an atmospher- ic-pressure air dielectric barrier discharge (DBD) plasma in contact with it. Many experiments in several operating conditions were performed. The discharge was supplied by sinusoidal and nanosecond-pulsed voltages with a constant average power of ~7 W in both cases. Biological effects due to the plasma were investigated by performing tests with increasing treatment time. A sudden ~40% drop in the number of survived oocysts was reached in 4 min and a two-fold reduction was detected after 12 min of exposure. No significant differences in the biocidal efficacy were detected between the AC-driven and the nanosecond-pulsed discharge. Chi-squared statistical analysis on the treated samples showed significant statistical difference (with a statistical significance P value parameter less than 0.01) and nonrandomness warranty of the results, opening interesting scenarios for fimire developments. |
Data stato definitivo: | 2019-02-11T10:38:10Z |
Appare nelle tipologie: | 1.01 Articolo in rivista |
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DBD_Neretti et al., 2018.pdf | Post-print | Licenza per accesso libero gratuito | Open Access Visualizza/Apri |