콘텐츠 본문
논문 국내 국제전문학술지(SCI급) Removal of Reactive Black 5 by zero-valent iron modified with various surfactants
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2010
- 저자명 우승한
- 학술지명 CHEMICAL ENGINEERING JOURNAL
- 발행처명 ELSEVIER SCIENCE SA
- 발행국가 국내
- 논문언어 한국어
- 전체저자수 3
논문 초록 (Abstract)
Zero-valent iron (ZVI) particles were synthesized by the aqueous phase borohydride reduction method, and the synthesized ZVI particles were used for the reductive degradation of Reactive Black 5 (RB5) dye in aqueous solution. The sizes of the synthesized ZVI particles were i n the microscale range, with an average diameter of 13.57 mu m. To st udy the efficiency of surfactant-treated ZVI particles for the decolorization of RB5 solution, three different surfactant s, triton X-100 (TX100, non-ionic surfactant), cetyl trimethyl ammon ium bromide (CTAB, cationic surfactant), and sodium dodecyl sulfate (S DS, anionic surfactant) were selected for the treatment of ZVI. The no rmalized residual concentration after decolorization of 500 mg/l RB 5 by ZVI for 3 h was 0.236, while ZVI particles treated with TX100 (0.5 g/l), CTAB (1.0 g/l). and SDS (2.5 g/l) exhibited normalized residual concentration of 0.172, 0.154, and 0.393, respectively, af ter 3 h. The color removal efficiency was found to be increased with de crease in initial pH of dye solution, and ZVI exhibited good color r emoval efficiency at acidic pH. Decolorization kinetics by pseudo -first-order rate equation showed that removal rate was increased after treatment with TX100 as well as CTAB, while that was reduced after S DS treatment. (C) 2010 Elsevier B.V. All rights reserved.
