Inhibition of corrosion causing Pseudomonas aeruginosa using plasma-activated water.

Autor: Asimakopoulou E; School of Engineering, University of Central Lancashire, Preston, UK., Εkonomou SΙ; Faculty of Health and Applied Sciences (HAS), Centre for Research in Biosciences, University of the West of England, Bristol, UK., Papakonstantinou P; School of Engineering, Engineering Research Institute, Ulster University, Newtownabbey, UK., Doran O; Faculty of Health and Applied Sciences (HAS), University of the West of England, Coldharbour Ln, Bristol, UK., Stratakos AC; Centre for Research in Biosciences, Faculty of Health and Applied Sciences (HAS), University of the West of England, Bristol, UK.
Jazyk: angličtina
Zdroj: Journal of applied microbiology [J Appl Microbiol] 2022 Apr; Vol. 132 (4), pp. 2781-2794. Date of Electronic Publication: 2021 Dec 07.
DOI: 10.1111/jam.15391
Abstrakt: Aims: The cost of Microbiologically Influenced Corrosion (MIC) significantly affects a wide range of sectors. This study aims to assess the efficiency of a novel technology based on the use of plasma-activated water (PAW) in inhibiting corrosion caused by bacteria.
Methods and Results: This study evaluated the effectiveness of PAW, produced by a plasma bubble reactor, in reducing corrosion causing Pseudomonas aeruginosa planktonic cells in tap water and biofilms were grown onto stainless steel (SS) coupons. Planktonic cells and biofilms were treated with PAW at different discharge frequencies (500-1500 Hz) and exposure times (0-20 min). P. aeruginosa cells in tap water were significantly reduced after treatment, with higher exposure times and discharge frequencies achieving higher reductions. Also, PAW treatment led to a gradual reduction for young and mature biofilms, achieving >4-Log reductions after 20 min. Results were also used to develop two predictive inactivation models.
Conclusions: This work presents evidence that PAW can be used to inactivate both planktonic cells and biofilms of P. aeruginosa. Experimental and theoretical results also demonstrate that reduction is dependent on discharge frequency and exposure time.
Significance and Impact of the Study: This work demonstrates the potential of using PAW as means to control MIC.
(© 2021 The Society for Applied Microbiology.)
Databáze: MEDLINE