Fly ash for the treatment of Cd(II) rich effluents
- 1 January 1987
- journal article
- research article
- Published by Taylor & Francis in Environmental Technology Letters
- Vol. 8 (1-12), 225-234
- https://doi.org/10.1080/09593338709384482
Abstract
The removal of Cd(II) by adsorption on fly ash has been found to be contact time, concentration, temperature and pH dependent. The process of removal follows first order adsorption kinetics and the rate controlling step is intrap article transport into the pores of fly ash particles. The equilibrium nature of Cd(II) adsorption at different temperatures has been described by the Langmuir isotherm. The temperature dependence of Cd(II) adsorption on fly ash indicates the exothermic nature of adsorption. Alkaline aqueous medium favours the removal of Cd(II) by fly ash. The increase in adsorption of Cd(II) with pH has been explained on the basis of surface complex formation approach.Keywords
This publication has 14 references indexed in Scilit:
- Use of wollastonite for the treatment of Cu(II) rich effluentsWater, Air, & Soil Pollution, 1986
- Copper(II) removal from aqueous solutions by fly ashWater Research, 1985
- Removal of Cadmium (II) by Low Cost AdsorbentsJournal of Environmental Engineering, 1984
- Surface mass transfer processes during colour removal from effluent using silicaWater Research, 1981
- Insoluble starch xanthate: Use in heavy metal removalJournal of Applied Polymer Science, 1975
- Removal of trace metals from wastewater by treatment with lime and discarded automotive tiresWater Research, 1974
- Momentum, heat and mass transfer, 2nd edition, C. O. Bennett and J. E. Myers, McGraw‐Hill, New York (1974). 810 pages. $17.85AIChE Journal, 1974
- Adsorption of hydrolyzable metal ions at the oxide—water interface. III. A thermodynamic model of adsorptionJournal of Colloid and Interface Science, 1972
- Variation in the concentration of cadmium in human kidney as a function of age and geographic originJournal of Chronic Diseases, 1961
- ADSORPTION AND REACTIONS AT SURFACES OF ZINC OXIDEJournal of the American Chemical Society, 1932