Wastewater Decontamination from Microorganisms by Electrospraying Corona Discharge

Autor:	Mohamed Elsawah, A. A. Garamoon, Mohamed Ali, Safwat Hassaballah, Ahmed Samir, Nasser N. Morgan, F. F. Elakshar
Rok vydání:	2013
Předmět:	Materials science Wastewater Chemical engineering chemistry Scanning electron microscope Microorganism chemistry.chemical_element Sewage treatment Water treatment Human decontamination Oxygen Corona discharge
Zdroj:	Journal of Modern Physics. :1632-1637
ISSN:	2153-120X 2153-1196
Popis:	A novel water treatment technique, based on a combination of electrospraying and pulsed corona discharge, has been used for bio-decontamination of wastewater. The electrospraying process has been found to increase the surface area of the treated wastewater, and hence increases the efficiency of the corona treatment process. The phase diagram of the discharge, which characterizes the discharge regimes, has been identified experimentally. The survival ratio of the microorganisms has been investigated experimentally as a function of the applied voltage and the numbers of treatment runs using air and oxygen as working gases. Microorganism surface has been examined using scanning electron microscope (SEM), which enabled in understanding the decontamination mechanisms of the treated microorganism. A complete decontamination has been achieved after only one run for an applied voltage higher than 16 kV when the discharge system was operated in oxygen gas. Optical emission spectrum of the electrosprayed water confirmed the existence of OH-radicals responsible for decontamination process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f308647de0068d62843443b26fa34d3f https://doi.org/10.4236/jmp.2013.412203 Zobrazit plný text záznamu