Particle Formation and Growth in Dielectric Barrier Discharge - Photocatalysts Hybrid Process for SO2 Removal

• 영문명: SO2 제거를 위한 유전체 장벽 방전 - 광촉매 복합 공정에서의 입자 형성과 성장
• 발행기관: 강원대학교 산업기술연구소
• 저자명: Nasonova, Anna(나소노바 안나) Kim, Dong-Joo(김동주) Kim, Kyo-Seon(김교선)
• 간행물 정보: 『산업기술연구』vol.30, 127~132쪽, 전체 6쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2010.09.30

영문 초록

We analyzed the effects of several process variables on the SO2 removal and particle growth by the dielectric barrier discharge-photocatalysts hybrid process. In this process, SO2 was converted into the ammonium sulfate ((NH4)2SO4) particles. The size and crystallinity of ammonium sulfate particles were examined by using TEM and XRD analysis. The dielectric barrier discharge reactor consisted of two zones: the first is for plasma generation and the second is for ammonium sulfate particles formation and growth. The first zone of reactor was filled with glass beads as adielectric material. To enhance SO2 removal process, the TiO2 photocatalysts were coated on glass beads by dip-coating method. As the voltage applied to the plasma reactor or the pulse frequency of applied voltage increases, the SO2 removalefficiency increases. Also as the initial concentration of SO2 decreases or as the residence time increases, the SO2 removal efficiency increases. (NH4)2SO4 particles continue to grow by particle coagulation and surface reaction, moving inside the reactor. Larger particles in site are produced according to the increase of residence time or SO2 concentrations.

목차

1. Introduction

2. Experimental apparatus

3. Results and discussions

4. Conclusions

키워드

SO2 제거 유전체 장벽 방전 - 광촉매 복합 공정 황산암모늄 입자 SO2 removal dielectric barrier discharge - photocatalysts hybrid process ammonium sulfate particles