콘텐츠 본문
논문 해외 국제전문학술지(SCI급) SIMULTANEOUS REMOVAL OF COD AND DIRECT RED 80 IN A MIXED ANAEROBIC SULFATE-REDUCING BACTERIA CULTURE
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2013-05
- 저자명 우승한
- 학술지명 CHEMICAL ENGINEERING JOURNAL
- 발행처명 ELSEVIER SCIENCE SA
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 3
논문 초록 (Abstract)
The degradation, kinetics and biotransformation of Direct Red 80 and chemical oxygen demand (COD) were examined under a sulfate reducing environment. Complete color and sulfate removal with more than 87% COD removal were obtained in the batch experiments at different dye (5 0-800 mg/l) and sulfate (100-5000 mg/l) concentrations. Dye degradation, COD and sulfate removal followed first order kinetics. An increase in dye concentration from 0 to 800 mg L-1 decreased the rate constant (k (1)) for dye, COD and sulfate removal from 0.0843 to 0.035 h(-1), 0.01 9 to 0.009 h(-1) and 0.108 to 0.075 h(-1), respectively. In particular , the sulfate concentration had no significant effect on dye degradatio n. Unlike other anaerobic cultures, the sulfate-reducing bacteria cu lture showed excellent dye mineralization and desulfonation ability. Fo urier transform infrared spectroscopy andgas chromatography-mass spectrometry revealed aniline and 1,4-diamino benzene to be the resulting metabolites after the decolorization of Direct Re d 80. (C) 2013 Elsevier B.V. All rights reserved.
