| 학회 |
한국화학공학회 |
| 학술대회 |
2008년 가을 (10/23 ~ 10/24, 부산 BEXCO) |
| 권호 |
14권 2호, p.3123 |
| 발표분야 |
환경 |
| 제목 |
H2S gas removal : A novel Ce(IV)/Ce(III) redox mediator |
| 초록 |
The objective of this study was to employ the mediated electrochemical oxidation (MEO) process for the first time for the removal of H2S from air-H2S feed mixture, and to rationalize the efficient application of MEO process for the odor gas removal. The H2S gas was absorbed into 3 M HNO3 electrolyte in a laboratory made scrubber column designed for deodorization, and was oxidatively removed by the Ce(IV) mediator oxidant electrochemically generated in an electrochemical cell set-up.The integration of the electrochemical cell with the scrubber set-up ensured continuous regeneration of the mediator and its repeated reuse for H2S removal purpose.The influences of the liquid and gas flow rates (QL from 2 to 4 L/min, QG from 30 to 70 L/min), the H2S concentration in the H2S-air feed mixture (5 to 15 ppm), and the Ce(III) pre-mediator concentration in the electrochemical cell (0.1 to 1 mol/L) on the H2S removal efficiency were investigated. Both liquid and gas flow rates influenced the removal efficiencies, but in opposite directions. Nearly 98% H2S removal was achieved as soon as the concentration of the Ce(IV) mediator ion in the flowing scrubbing liquid reached 0.1 mol/L. |
| 저자 |
찬드라세카라 필라이, 정상준, 김병준, 문일식
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| 소속 |
순천대 |
| 키워드 |
H2S; Cerium; Mediator; Electrochemical; Scrubbing
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| E-Mail |
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| 원문파일 |
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