Wastewater Decontamination from Microorganisms by Electrospraying Corona Discharge
Wastewater Decontamination from Microorganisms by Electrospraying Corona Discharge作者机构：1Center of Plasma Technology Al Azhar University Cairo Egypt 2Physics Department Faculty of Science Al-Azhar University Cairo Egypt Botany and Microbiology Department Faculty of Science Al-Azhar University Cairo Egypt Center of Plasma Technology Al Azhar University Cairo Egypt
出 版 物：《Journal of Modern Physics》 (现代物理（英文）)
年 卷 期：2013年第4卷第12期
页 面：1632-1637页
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学]
主 题：Wastewater Decontamination Electrospraying Pulsed Corona Discharge Low Temperature Plasma for Biodecontaination Environmental Applications of Plasmas Wastewater Treatment
摘 要：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.
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