Hits:

Date:2019-03-10

Indexed by:Journal Article

Date of Publication:2016-12-01

Journal:9th Asia-Pacific International Symposium on the Basics and Applications of Plasma Technology (APSPT) / 28th Symposium on Plasma Science for Materials (SPSM)

Included Journals:Scopus、CPCI-S、EI、SCIE

Volume:44

Issue:12,SI

Page Number:3052-3059

ISSN:0093-3813

Key Words:Corona-dielectric-barrier discharge (DBD); energy-conversion efficiency; low-temperature plasma; p-nitrophenol (PNP); soil remediation

Abstract:In this paper, energy-conversion efficiency (eta ) of multineedle-to-plate corona-dielectric-barrier discharge (DBD) at atmospheric pressure was investigated for the application of degradation of organics in soil. Discharge current characteristics with applied voltage were measured. The factors contributing to eta included applied voltage, discharge frequency, multineedle electrode, and dielectric eta increased with the applied voltage and resonant frequency generated the highest eta value. The number of needles and the variable distance between every two needles for the high-voltage electrode both had influence on eta. The examination of eta as also performed for the dielectrics characterization investigated. In order to facilitate the evaluation of the contribution of corona-DBD plasma to the remediation of organic-contaminated soil, p-nitrophenol (PNP) was used as target. Up to approximately 80% degradation was observed for PNP in soil exposed 3 mm away from the multineedle electrode. The plasma that remediated the soil sample with higher PNP concentration exhibited more efficient for the conversion of the electric energy.