Non-thermal plasma-based inactivation of bacteria in water using a microfluidic reactor.
Non-thermal plasma-based inactivation of bacteria in water using a microfluidic reactor.
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DOI：
10.1016/j.watres.2021.117321
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发表时间：
2021-06
期刊：
影响因子：
12.8
通讯作者：
Laila Patinglag;L. Melling;K. Whitehead;D. Sawtell;A. Iles;Kirsty J. Shaw
中科院分区：
文献类型：
--
作者：
Laila Patinglag;L. Melling;K. Whitehead;D. Sawtell;A. Iles;Kirsty J. Shaw
Failure of conventional water treatment systems may lead to the contamination of water sources, which can cause outbreaks of waterborne healthcare associated infections. Advanced oxidation processing by non-thermal plasma has the potential to treat water without the addition of chemicals. Antibiotic resistantPseudomonas aeruginosaandEscherichia coliwere chosen to investigate the use of non-thermal plasma generated in a microfluidic reactor to disinfect bacteria contaminated water. The microfluidic reactor used in this study utilized a dielectric barrier discharge, in a gas-liquid phase annular flow regime. Microbiological analysis of water inoculated withP. aeruginosaandE. coliwas carried out before and after plasma treatment. Using air as the carrier gas, effective disinfection of water was achieved. At the lowest flow rate (35 µL/min),P. aeruginosaandE. coliviability were drastically reduced, with an approximate 8 log maximum decrease in viability following an estimated residence time of 5 s of plasma treatment. Scanning electron microscopy indicated changes in cell morphology due to the plasma treatment. Live/Dead assays revealed that the membranes of the cells had been damaged after plasma treatment. This work demonstrated that non-thermal plasma has the potential to disinfect against microbial contamination in water.
