Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 175, Issue 1-3, Pages 304-310Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2009.10.004
Keywords
Biosorption; Nickel; Brown algae; Dynamic; Thermodynamic
Categories
Funding
- Ibn Hayan Research Laboratories
- Atomic Energy Organization of Iran
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The biosorption characteristics of nickel(II) ions using the brown algae (Cystoseria indica, Nizmuddinia zanardini, Sargassum glaucescens and Padina australis) were investigated. Experimental parameters affecting the biosorption process such as pH level, contact time, initial metal concentration and temperature were studied. The equilibrium data fitted very well to the Langmuir adsorption model in the concentration range of nickel (II) ions and at all the temperatures studied. Evaluation of the experimental data in terms of biosorption dynamics showed that the biosorption of nickel(II) onto algal biomass followed the pseudo-second-order dynamics well. The calculated thermodynamic parameters (Delta G degrees, Delta H degrees and Delta S degrees) showed that the biosorption of nickel(II) ions were feasible, spontaneous and endothermic at the temperature ranges of 293-313K. (C) 2009 Elsevier B.V. All rights reserved.
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