期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：1
页码：129-137
出版社：University of Mohammed Premier Oujda
摘要：The absorbent Alfa fibers powder was used for its lo w cost, available and natural for removal of reactive textile dyes (reactive red 23 (RR-23) and reactive blue 19 (RB-19)) from aqueous solution. The absorbent Alfa fibers powder was obtained from leaf of Stippa Tenacissima L crushed and screened with a particle size less than < 2mm. Batch experiments were carried out for sorption kinetics and isotherms. Operating variables studied were pH, treatment time, temperature, dye and adsorbent concentrations. The adsorption parameters were determined based on Langmuir and Freundlich isotherm models. These parameters were obtained fro m the equilibrium adsorption data for the two reactive dyes. While the kinetics and thermod ynamic parameters were used to establ ish the adsorption mechanism. As an adsorbent, Alfa fibers powder have a preference for Reactive Red 23, retaining up to 34.13 mg/g at 22°C, whereas a retention of only 11.33 mg/g at 22°C has been achieved b y Reactive blue 19. Besides that, the thermodynamic study showed that the dye adsorption onto absorbent Alfa fibers powder was favourable, endothermic and spontaneous.
关键词：adsorption kinetics; adsorption isotherm; alfa fibers po wder; leaf of Stippa Tenacissima L; RR;23 dye; RB;19 ; dye
