TITLE:
Disinfecting Water: Plasma Discharge for Removing Coronaviruses
AUTHORS:
Djamel Ghernaout, Noureddine Elboughdiri
KEYWORDS:
Coronaviruses, COVID-19, Corona Discharge, Dielectric-Barrier Discharges (DBDs), UV Radiation, Disinfection
JOURNAL NAME:
Open Access Library Journal,
Vol.7 No.4,
April
29,
2020
ABSTRACT: At COVID-19 time, viruses in water become gravely dangerous to human health and life and very resistant to traditional disinfection methods. As a type of encouraging endeavor for contamination removal, plasma discharge shows good results in dealing with viruses’ removal. Indeed, more efficient, cheaper, and environmentally-friendly than conventional disinfection techniques, electrical discharge technologies are confirmed as. UV emission from plasma dispositions and the impacts of irradiation on microorganisms become broadly studied. Throughout ozonation, implementing pulsed high-voltages can lead to better diffusion of ozone in water and quicker transformation of ozone into free radicals. Via direct electrical discharges, purifying water has trends to be examined on a large-scale. Both in water and above water level, the electrical discharges possess their advantages and disadvantages. Above water level, which is in the gas phase, electrical discharges need less energy for the discharge to occur; however, in water, electrical discharges need an easier setup and form the chemically active species that could immediately bombard the aqueous contaminants. One of the kinds of electrical discharges, pulsed corona discharge remains the most tried and looks to be the most encouraging for treating water. Such methods could be methodically experimented with determining the optimal circumstances for killing COVID-19 and different pathogens from water. Merging plasma discharge, electrocoagulation, and magnetic field implementation can lead to better performances. As a secure physical separation, the final step has to involve activated carbon adsorption pursued by a membrane process to retain organic matter liberated from the cellular cytoplasm throughout oxidation and disinfection methods.