Volume 8, Issue 2, September 2014, Pages 224–233
Davis Amboga Anzeze1, John Mmari Onyari2, Paul Mwanza Shiundu3, and John W Gichuki4
1 Department of Chemistry, School of Physical Sciences, College of Biological and Physical Sciences, University of Nairobi, Kenya
2 Department of Chemistry, School of Physical Sciences, College of Biological and Physical Sciences, University of Nairobi, Kenya
3 The Department of Chemical Sciences and Technology, The Technical University of Kenya, Haile Selassie Avenue, Kenya
4 Environmental Protection Department (EPD), Big Valley Rancheria Bond of Pono Indiana, 2726 Mission Rancheria road, Lakeport CA 95453, USA
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The biosorption characteristics of Zn (II) ions were investigated. Experimental parameters affecting the biosorption process such as pH, contact time, biomass dosage, initial metal ion concentration, and temperature were studied in batch adsorption experiments. Langmuir and Freundlich isotherm models were applied to the adsorption data .The biosorption capacity for E. crasippes was found to be 16.50 mg g-1. The data was also subjected to pseudo-first-order and the pseudo-second-order kinetic models.
Author Keywords: Biosorption, Water hyacinth (E. crassipes), Heavy metal ions, Isotherms, Kinetics.
Davis Amboga Anzeze1, John Mmari Onyari2, Paul Mwanza Shiundu3, and John W Gichuki4
1 Department of Chemistry, School of Physical Sciences, College of Biological and Physical Sciences, University of Nairobi, Kenya
2 Department of Chemistry, School of Physical Sciences, College of Biological and Physical Sciences, University of Nairobi, Kenya
3 The Department of Chemical Sciences and Technology, The Technical University of Kenya, Haile Selassie Avenue, Kenya
4 Environmental Protection Department (EPD), Big Valley Rancheria Bond of Pono Indiana, 2726 Mission Rancheria road, Lakeport CA 95453, USA
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The biosorption characteristics of Zn (II) ions were investigated. Experimental parameters affecting the biosorption process such as pH, contact time, biomass dosage, initial metal ion concentration, and temperature were studied in batch adsorption experiments. Langmuir and Freundlich isotherm models were applied to the adsorption data .The biosorption capacity for E. crasippes was found to be 16.50 mg g-1. The data was also subjected to pseudo-first-order and the pseudo-second-order kinetic models.
Author Keywords: Biosorption, Water hyacinth (E. crassipes), Heavy metal ions, Isotherms, Kinetics.
How to Cite this Article
Davis Amboga Anzeze, John Mmari Onyari, Paul Mwanza Shiundu, and John W Gichuki, “Biosorption of Zn (II) ions from aqueous solutions by water hyacinth (Eichhornia crasippes): Equilibrium and Kinetic studies,” International Journal of Innovation and Scientific Research, vol. 8, no. 2, pp. 224–233, September 2014.
