DOI: 10.1007/s11069-020-04358-1
论文题名: Adsorption of Congo red and crystal violet dyes onto cellulose extracted from Egyptian water hyacinth
作者: Salahuddin N. ; Abdelwahab M.A. ; Akelah A. ; Elnagar M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 2 起始页码: 1375
结束页码: 1394
语种: 英语
中文关键词: Adsorption
; Bleaching
; Crystallinity
; Mercerization
; Water hyacinth
英文关键词: adsorption
; angiosperm
; aquatic plant
; bleaching
; cellulose
; crystallinity
; dye
; feasibility study
; waste disposal
; Nile River
; Eichhornia crassipes
; Hyacinthus
英文摘要: Abstract: The present investigation has highlighted the utility of floating aquatic Egyptian hyacinth, which is considered as a significant reason for environmental problems in Nile River, to offer an opportunity to effective disposal of waste and the feasibility of cellulose extraction (16%) utilizing hazard free method. Cellulose was extracted from water hyacinth fiber using mercerization, mercerization-bleaching and Soxhlet extraction method. Dearth of lignin and hemicellulose in all extracted cellulose were affirmed from FTIR spectra. The impact of extraction conditions on crystallinity, aspect ratio and thermal properties of the extracted cellulose is displayed. Mercerization method (5% NaOH) is adequate to obtain cellulose (C-5% NaOH) with high crystallinity (46.9%), high decomposition temperature and high aspect ratio. C-5% NaOH was used for expulsion of crystal violet, Congo red from aqueous solutions by adsorption method. Kinetics models were applied to estimate the rate constant and to depict the equilibrium isotherm for the crystal violet and Congo red adsorption process. Graphic Abstract: [Figure not available: see fulltext.] © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169331
Appears in Collections: 气候变化与战略
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作者单位: Polymer Research Group, Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
Recommended Citation:
Salahuddin N.,Abdelwahab M.A.,Akelah A.,et al. Adsorption of Congo red and crystal violet dyes onto cellulose extracted from Egyptian water hyacinth[J]. Natural Hazards,2021-01-01,105(2)