Adsorption of cobalt by activated carbon from the rice hulls
- 1 September 1997
- journal article
- research article
- Published by Taylor & Francis in Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology
- Vol. 32 (8) , 2077-2086
- https://doi.org/10.1080/10934529709376668
Abstract
The removal of cobalt (II) ion from aqueous solutions, by adsorption on activated carbon prepared from the rice hulls (ACRH), has been investigated depending on pH, activated carbon dosage, contact time, initial metal concentration and solution temperature. The optimum values of pH, ACRH dosage and contact time have been determined as 6–7, 1.5 g ACRH/50 mL solution and 40 minutes respectively. Freundlich and Langmuir isotherm constants have been calculated at two different temperatures of 293 K and 313 K. Furthermore the other thermodynamic data for ΔG° and ΔS°, have been also calculated at two temperatures of 293 K and 313 K. The adsorption of Co (II) ion from aqueous solutions has been found to be exothermic (ΔH°= ‐1.543 KJ/mol).Keywords
This publication has 7 references indexed in Scilit:
- Adsorption of heavy metal ions on carbonaceous material developed from the waste slurry generated in local fertilizer plantsPublished by Elsevier ,2003
- Modeling Cd Adsorption in Single and Binary Adsorbent (PAC) SystemsJournal of Environmental Engineering, 1993
- The adsorption of heavy metals onto hydrous activated carbonWater Research, 1987
- Adsorption of mercury(II) by coal fly ashWater Research, 1987
- Study of Cd(II) adsorption from aqueous solution on activated carbonsCarbon, 1986
- Copper(II) removal from aqueous solutions by fly ashWater Research, 1985
- Adsorption characteristics of some Cu(II) complexes on aluminosilicatesWater Research, 1981