콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Adsorption of congo red by chitosan hydrogel beads impregnated with carbon nanotubes
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2010-03
- 저자명 우승한
- 학술지명 BIORESOURCE TECHNOLOGY
- 발행처명 ELSEVIER SCI LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 3
논문 초록 (Abstract)
The adsorption performance of chitosan (CS) hydrogel beads was investigated after multiwalled carbon nanotubes (MWCNTs) impre gnation for the removal of congo red (CR) as an anionic dye. The study of the adsorption capacity of CS/CNT beads as a function of the CNT concentration indicated that 0.01% CNT impregnation was the most useful for enhancing the adsorption capacity. The sulfur (%) in th e CS/CNT beads measured by energy dispersive X-ray (EDX) was 2.5 tim es higher than thatof normal CS beads after CR adsorption. Equilibri um adsorption isotherm data of the CS/CNT beads exhibited bett er fitto the Langmuir isotherm model than to the Freundlich isotherm model, and the heterogeneity factor (n) value of the CS/CNT beads calc ulated from the Sips isotherm model was close to unity (0.98). The maxi mum adsorption capacity of CS/CNT beadsobtained from the Langm uir model was 450.4 mg g(-1). (C) 2009 Elsevier Ltd. All rights reser ved.
