Kinetics of Chromium Sorption on Biomass Fungi from Aqueous Solution | Science Publications

American Journal of Environmental Sciences

Louhab Krim¹  Goma Bilango¹  Sahmoune Nacer¹ 

关键词: Adsorption;    chromium;    kinetics;    fungi biomass;    intraparticle diffusion;    activation energy;   

DOI  :  10.3844/ajessp.2006.27.32

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

The kinetics of chromium ions sorption from aqueous solution on fungi biomass have beeninvestigated in a batch system. The experimental data were analysed based on an intraparticle diffusionequation and a pseudo-second-order mechanism, in order to predict the constant rate of sorption andthe equilibrium capacity with the effect of initial chromium ions concentration, temperature and initialsolution pH. The results indicate that the sorption mechanism is described by a pseudo-second orderequation. Intraparticule diffusion was signifiant in the lower concentration systems. The sorption ofchromium onto the biomass fungi sorbent is favoured at higher concentrations of chromium solution,low temperatures. An activation energy of sorption was evaluted as 11.7 Kj.mol-1 for the sorption ofchromium ions on fungi biomass. The results show that the sorption of the chromium ions on fungibiomass is exothermic nature process.

【 授权许可】

Unknown